U
SER'S HANDBOOK
Model 9500B
High Performance Oscilloscope Calibrator
Operation and Performance
Final Width = 215mm
Final Width = 215mm
User's Handbook
For
The Model 9500B
High Performance Oscilloscope Calibrator
Operation and Performance
© 2001 Fluke Precision Measurement Ltd. Part No. 1625019 Issue 1.0 (September 2001)
For any assistance contact your nearest Fluke Sales and Service Center.
ISO 9002
Fluke Precision Measurement Ltd.
CERTIFICATE
No. FM 29700
Addresses can be found at the back of this handbook.
Due to our policy of continuously updating our products, this handbook may contain minor
differences in specification, components and circuit design to the instrument actually supplied.
Amendment sheets precisely matched to your instrument serial number are available on request.
LIMITED WARRANTY AND LIMITATION OF LIABILITY
Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The
warranty period is one year and begins on the date of shipment. Parts, product repairs, and services are warranted for 90 days.
This warranty extends only to the original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses,
disposable batteries, or to any product which, in Fluke’s opinion, has been misused, altered, neglected, contaminated, or
damaged by accident or abnormal conditions of operation or handling. Fluke warrants that software will operate substantially
in accordance with its functional specifications for 90 days and that it has been properly recorded on non-defective media. Fluke
does not warrant that software will be error free or operate without interruption.
Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no
authority to extend a greater or different warranty on behalf of Fluke. Warranty support is available only if product is purchased
through a Fluke authorized sales outlet or Buyer has paid the applicable international price. Fluke reserves the right to invoice
Buyer for importation costs of repair/replacement parts when product purchased in one country is submitted for repair in another
country.
Fluke’s warranty obligation is limited, at Fluke’s option, to refund of the purchase price, free of charge repair, or replacement
of a defective product which is returned to a Fluke authorized service center within the warranty period.
To obtain warranty service, contact your nearest Fluke authorized service center to obtain return authorization information, then
send the product to that service center, with a description of the difficulty, postage and insurance prepaid (FOB Destination).
Fluke assumes no risk for damage in transit. Following warranty repair, the product will be returned to Buyer, transportation
prepaid (FOB Destination). If Fluke determines that failure was caused by neglect, misuse, contamination, alteration, accident,
or abnormal condition of operation or handling, including overvoltage failures caused by use outside the product’s specified
rating, or normal wear and tear of mechanical components, Fluke will provide an estimate of repair costs and obtain authorization
before commencing the work. Following repair, the product will be returned to the Buyer transportation prepaid and the Buyer
will be billed for the repair and return transportation charges (FOB Shipping Point).
THIS WARRANTY IS BUYER’S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, ARISING FROM ANY
CAUSE OR THEORY.
Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or limitation of incidental
or consequential damages, the limitations and exclusions of this warranty may not apply to every buyer. If any provision of this
Warranty is held invalid or unenforceable by a court or other decision-maker of competent jurisdiction, such holding will not
affect the validity or enforceability of any other provision.
Final Width = 215mm
Fluke reserves the right to amend specifications without notice.
Sept 1, 2001
Final Width = 215mm
Contents
Page
SAFETY ISSUES: READ THIS ENTIRE SECTION THOROUGHLY BEFORE ATTEMPTING TO
INSTALL, OPERATE OR SERVICE THE MODEL 9500B 0-8
Section 1 The Model 9500B High Performance Oscilloscope Calibrator
1.1 About Section 1 ............................................................................................................. 1-1
1.2 Introduction to the Model 9500B ................................................................................... 1-2
1.3 Model 9500B Associated Products and Options ........................................................... 1-4
Section 2 Installing the Model 9500B
2.1 About Section 2 ............................................................................................................. 2-1
2.2 Lifting and Carrying the Model 9500B ........................................................................... 2-1
2.3 Unpacking and Inspection ............................................................................................. 2-2
2.4 Storage..........................................................................................................................2-2
2.5 Preparation for Shipment .............................................................................................. 2-2
2.6 Calibration Enable Switch ............................................................................................. 2-2
2.7 Preparation for Operation .............................................................................................. 2-3
2.8 Connectors and Pin Designations ................................................................................. 2-7
2.9 Care of Microwave Connectors ..................................................................................... 2-9
Section 3 Model 9500B Controls
3.1 About Section 3 ............................................................................................................. 3-1
3.2 Introduction to the Front Panel ...................................................................................... 3-2
3.3 Preferences ................................................................................................................... 3-6
3.4 Modes of Operation .......................................................................................................3-8
Section 4 Using the Model 9500B — Manual Mode
4.1 About Section 4 ............................................................................................................. 4.1-1
4.2 Interconnections ............................................................................................................ 4.2-1
4.3 Manual Mode — Function Selection ............................................................................. 4.3-1
4.4 Edit Facilities ................................................................................................................. 4.4-1
Functions:
4.5 DC/Square Function......................................................................................................4.5-1
4.6 Levelled Sine Function .................................................................................................. 4.6-1
4.7 Edge Function ............................................................................................................... 4.7-1
4.8 Time Markers Function.................................................................................................. 4.8-1
4.9 Auxiliary Functions ........................................................................................................ 4.9-1
4.10 Current Function............................................................................................................ 4.10-1
4.11 Composite Video Function ............................................................................................ 4.11-1
4.12 Linear Ramp Function ................................................................................................... 4.12-1
4.13 Overload Pulse Function ............................................................................................... 4.13-1
4.14 Zero Skew Function ..................................................................................................... 4.14-1
4.15 Auxiliary Input Function ................................................................................................ 4.15-1
4.16 Load Resistance and Capacitance Measurement Function.......................................... 4.16-1
4.17 Input Leakage Function................................................................................................. 4.17-1
4.18 Pulse Width Function .................................................................................................... 4.18-1
0-4 Model 9500B User's Handbook — Contents List
Section 5 Using the Model 9500B — Procedure Mode
5.1 About Section 5............................................................................................................. 5.1-1
5.2 Procedure Mode — Safety and General Notes............................................................. 5.2-1
Section 6 Remote Interfaces
6.1 About Section 6 and Section 6 Contents....................................................................... 6.1-1
6.2 Index of IEEE-488.2 and SCPI Codes used in the Model 9500B.................................. 6.2-1
6.3 Introduction.................................................................................................................... 6.3-1
6.4 Using the 9500B in a System ........................................................................................ 6.4-1
6.5 Retrieval of Device Status Information .......................................................................... 6.5-1
6.6 9500B SCPI Language - Commands and Syntax ......................................................... 6.6-1
Section 6 Appendix A: IEEE 488.2 Device Documentation Requirements............................ 6-A1
Section 6 Appendix B: SCPI Command Set and Conformance Information ......................... 6-B1
Section 6 Appendix C: IEEE 488.2 Common Commands and Queries
Implemented in the Model 9500B...................................................... 6-C1
Section 6 Appendix D: Model 9500B — Device Settings after *RST..................................... 6-D1
Section 6 Appendix E: Model 9500B — Device Settings at Power On.................................. 6-E1
Section 6 Appendix F: Model 9500B —
Emulation of Tektronix SG5030 and CG5010/5011 .......................... 6-F1
Section 7 Model 9500B Specifications
7.1 General.......................................................................................................................... 7-1
7.2 The Meaning of 'Uncertainty' when used in the Function Uncertainty Tables............... 7-1
7.3 DC/Square Function Specifications............................................................................... 7-2
7.4 Levelled Sine Function Specifications........................................................................... 7-3
7.5 Edge Function Specifications ........................................................................................ 7-4
7.6 Time Markers Function Specifications .......................................................................... 7-5
7.7 Current Function Specifications .................................................................................... 7-6
7.8 Composite Video Function Specifications..................................................................... 7-6
7.9 LF Linear Ramp Function Specifications....................................................................... 7-6
7.10 Overload Pulse Function Specifications ........................................................................ 7-7
7.11 Zero Skew Function Specifications ............................................................................... 7-7
7.12 Input Leakage Function Specifications .......................................................................... 7-7
7-13 Auxiliary Input Function Specifications .......................................................................... 7-7
7.14 Resistance and Capacitance - UUT Input Parameters
Measurement Specifications ......................................................................................... 7-8
7.15 Reference Frequencies Specifications .......................................................................... 7-8
7.16 UUT Trigger Output Specifications ................................................................................ 7-9
Page
Final Width = 215mm
Final Width = 215mm
Section 8 Model 9500B — Routine Maintenance and Test
8.1 About Section 8............................................................................................................. 8-1
8.2 Routine Maintenance .................................................................................................... 8-2
8.3 Model 9500B Test and Selftest ..................................................................................... 8-4
8.4 Printing Selftest Results ................................................................................................ 8-10
Section 8 Appendix A Error Reporting Subsystem ............................................................... 8-A1
Model 9500B User's Handbook — Contents List 0-5
Final Width = 215mm
Section 9 Verifying the Model 9500B Specification
9.1 About Section 9 ............................................................................................................. 9-1
9.2 Need for Verification...................................................................................................... 9-1
9.2.1 Factory Calibration and Traceability ........................................................................ 9-1
9.2.2 Verification on Receipt from the Factory ................................................................. 9-1
9.2.3 Verification after User-Calibration............................................................................ 9-1
9.3 Equipment Requirements .............................................................................................. 9-1
9.4 Interconnections ............................................................................................................ 9-1
9.5 Verification Points.......................................................................................................... 9-1
9.6 Specification Limits........................................................................................................ 9-2
9.7 Verification Procedure ................................................................................................... 9-2
9.8 9500B Mainframe Verification by Functions
9.8.1 Verifying the DC/Square Function: DC Voltage ..................................................... 9-2
9.8.2 Verifying the DC/Square Function: Square Voltage ............................................... 9-6
9.8.3 Verifying the LF Sine Voltage Function ................................................................... 9-10
9.8.4 Verifying the Time Markers Function....................................................................... 9-13
9.8.5 Verifying the Load Resistance Measurement Function ........................................... 9-15
9.9 9520/9510 Head Verification by Functions
9.9.1 Verifying the Levelled Sine Voltage Function: LF Gain .......................................... 9-18
9.9.2 Verifying the Levelled Sine Voltage Function: Flatness ......................................... 9-21
9.9.3 Verifying the Edge Function .................................................................................... 9-27
9.9.4 Verifying the Load Capacitance Measurement Function......................................... 9-30
Section 10 Calibrating the Model 9500B
10.1 About Section 10 and Section 10 Contents ................................................................... 10.1-1
10.2 9500B Mainframe Calibration and Active Head™ Calibration ....................................... 10.2-1
10.2.1 Introduction.............................................................................................................. 10.2-1
10.2.2 Mainframe Unit Calibration ...................................................................................... 10.2-1
10.2.3 Active Head Calibration ........................................................................................... 10.2-1
10.2.4 Other Functions ....................................................................................................... 10.2-1
10.2.5 Mainframe Unit Manual Calibration ......................................................................... 10.2-1
10.3 The Model 9500B Calibration Mode .............................................................................. 10.3-1
10.3.1 Introduction.............................................................................................................. 10.3-1
10.3.2 Mode Selection........................................................................................................ 10.3-2
10.3.3 Selection of Calibration Mode ................................................................................. 10.3-2
10.3.4 Special Calibration .................................................................................................. 10.3-3
10.3.5 Special Cal: 'Adjust FREQ' ...................................................................................... 10.3-4
10.3.6 Mainframe Standard Calibration (STD CAL) ........................................................... 10.3-5
10.3.7 Overview of Calibration Operations ......................................................................... 10.3-6
10.4 Standard Calibration — Basic Sequences .................................................................... 10.4-1
10.4.1 Introduction.............................................................................................................. 10.4-2
10.4.2 Target Selection Screen — Selecting Hardware Configurations............................. 10.4-2
10.4.3 The Adjustment Screen ........................................................................................... 10.4-3
10.4.4 Calibrating the Model 9500B at Target Values ........................................................ 10.4-4
10.4.5 Standard Calibration of AC Functions ..................................................................... 10.4-5
10.4.6 Exit from Calibration - Cal Date and Cal Due Date ................................................. 10.4-6
10.5 Front Panel Calibration by Functions ............................................................................ 10.5-1
10.5.1 Introduction.............................................................................................................. 10.5-1
10.5.2 Summary of Calibration Process ............................................................................. 10.5-2
10.5.3 DC/Square — DC Voltage Calibration .................................................................... 10.5-4
10.5.4 DC/Square — Square Calibration ........................................................................... 10.5-8
10.5.5 LF Sine Voltage Calibration ..................................................................................... 10.5-13
Page
0-6 Model 9500B User's Handbook — Contents List
Section 10 Calibrating the Model 9500B - Cont.
10.5.7 Levelled Sine Function: L F Gain ............................................................................ 10.5-19
10.5.8 Levelled Sine Function: H F Linearity...................................................................... 10.5-20
10.5.9 Edge Function: Low Edge: Linearity........................................................................ 10.5-21
10.5.10 Edge Function: Low Edge: Gain.............................................................................. 10.5-22
10.5.11 Edge Function: Low Edge: Speed........................................................................... 10.5-23
10.5.12 Edge Function: Fast Edge: Gain ............................................................................. 10.5-24
10.5.13 Edge Function: Fast Edge: Speed .......................................................................... 10.5-25
10.5.14 Timing Markers........................................................................................................ 10.5-26
10.6 9510/9520/9530 Head Calibration Procedures .............................................................10.6-1
10.6 Introduction.............................................................................................................. 10.6-1
10.6.1 Levelled Sine Function: LF Gain ............................................................................ 10.6-1
10.6.2 Levelled Sine Function: HF Calibration .................................................................. 10.6-3
10.6.3 Edge Function Calibration ....................................................................................... 10.6-6
10.6.4 Calibrating the Timing Markers................................................................................ 10.6-10
10.6.5 Load Capacitance Calibration ................................................................................. 10.6-11
10.6.6 50Ω/1MΩ Ratio Calibration ..................................................................................... 10.6-12
10.6.7 Exit from Head Calibration ...................................................................................... 10.6-13
Addendum: The Model 9550 Active Head
A.1 Introduction.............................................................................................................. A-1
A.2 Model 9550 Specifications ...................................................................................... A-1
A.3 Model 9550 Operation ............................................................................................. A-2
Fluke's Regional Sales & Service Centers
Inside Rear Cover
Page
Final Width = 215mm
Final Width = 215mm
Model 9500B User's Handbook — Contents List 0-7
SAFETY ISSUES
READ THIS ENTIRE SECTION THOROUGHLY BEFORE ATTEMPTING TO INSTALL, OPERATE OR SERVICE THE MODEL 9500B
Final Width = 215mm
General Safety Summary
This instrument has been designed and tested in accordance with
the British and European standard publication EN61010:1993/
A2:1995, and has been supplied in a safe condition.
This manual contains information and warnings that must be
observed to keep the instrument in a safe condition and ensure
safe operation. Operation or service in conditions or in a manner
other than specified could compromise safety. For the correct
and safe use of this instrument, operating and service personnel
must follow generally accepted safety procedures, in addition to
the safety precautions specified.
To avoid injury or fire hazard, do not switch on the instrument
if it is damaged or suspected to be faulty. Do not use the
instrument in damp, wet, condensing, dusty, or explosive gas
environments.
Whenever it is likely that safety protection has been impaired,
make the instrument inoperative and secure it against any
unintended operation. Inform qualified maintenance or repair
personnel. Safety protection is likely to be impaired if, for
example, the instrument shows visible damage, or fails to
operate normally.
WARNING THIS INSTRUMENT CAN DELIVER A
LETHAL ELECTRIC SHOCK. NEVER
TOUCH ANY LEAD OR TERMINAL
UNLESS YOU ARE ABSOLUTELY
CERTAIN THAT NO DANGEROUS
VOLTAGE IS PRESENT.
Explanation of safety related
symbols and terms
DANGER electric shock risk
The product is marked with this symbol to indicate
that hazardous voltages (>30 VDC or AC peak)
may be present.
CAUTION refer to documentation
The product is marked with this symbol when the
user must refer to the instruction manual.
Earth (Ground) terminal
Functional Earth (Ground) only - must not be
used as a Protective Earth.
WARNING WARNING STATEMENTS IDENTIFY
CONDITIONS OR PRACTICES THAT
COULD RESULT IN INJURY OR DEATH.
CAUTION CAUTION STATEMENTS IDENTIFY
CONDITIONS OR PRACTICES THAT
COULD RESULT IN DAMAGE TO THIS
OR OTHER PROPERTY.
0-8 Model 9500B User's Handbook — Safety Section
Protective Earth (Ground)
Protection Class I:
The instrument must be operated with a Protective Earth/
Ground connected via the power cable's protective earth/ground
conductor. The Protective Earth/Ground connects to the
instrument before the line & neutral connections when the
supply plug is inserted into the power socket on the back of the
instrument.
WARNING ANY INTERRUPTION OF THE
PROTECTIVE GROUND CONDUCTOR
INSIDE OR OUTSIDE THE INSTRUMENT
IS LIKELY TO MAKE THE INSTRUMENT
DANGEROUS.
To avoid electric shock hazard, make signal connections to the
instrument after making the protective ground connection.
Remove signal connections before removing the protective
ground connection, i.e. the power cable must be connected
whenever signal leads are connected.
Do Not Operate Without Covers
To avoid electric shock or fire hazard, do not operate the
instrument with its covers removed. The covers protect users
from live parts, and unless otherwise stated, must only be
removed by qualified service personnel for maintenance and
repair purposes.
WARNING REMOVING THE COVERS MAY EXPOSE
VOLTAGES IN EXCESS OF 1.5KV PEAK
(MORE UNDER FAULT CONDITIONS).
Safe Operating Conditions
Only operate the instrument within the manufacturer's specified
operating conditions. Specification examples that must be
considered include:
ambient temperature
ambient humidity
power supply voltage & frequency
maximum terminal voltages or currents
altitude
ambient pollution level
exposure to shock and vibration
To avoid electric shock or fire hazard, do not apply to or subject
the instrument to any condition that is outside specified range.
See Section 6 of this manual for detailed instrument specifications
and operating conditions.
CAUTION CONSIDER DIRECT SUNLIGHT,
RADIATORS AND OTHER HEAT
SOURCES WHEN ASSESSING AMBIENT
TEMPERATURE.
CAUTION BEFORE CONNECTING THE
INSTRUMENT TO THE SUPPLY, MAKE
SURE THAT THE REAR PANEL AC
SUPPLY VOLTAGE CONNECTOR IS SET
TO THE CORRECT VOLTAGE AND THAT
THE CORRECT FUSES ARE FITTED.
continued overleaf
Final Width = 215mm
Final Width = 215mm
Model 9500B User's Handbook — Safety Section 0-9
The Power Cable and Power Supply
Disconnection
Installation Category I:
Final Width = 215mm
The intended power supply disconnect device is the ON/OFF
switch that is located on the instrument's rear panel. The ON/
OFF switch must be readily accessible while the instrument is
operating. If this operating condition cannot be met, the power
cable plug or other power disconnecting device must be readily
accessible to the operator.
To avoid electric shock and fire hazard, make sure that the power
cable is not damaged, and that it is adequately rated against
power supply network fusing. If the power cable plug is to be the
accessible disconnect device, the power cable must not be
longer than 3 metres.
Power Input & Fuse Requirements
To avoid fire hazard, use only the fuse arrangements that appear
in the fuse specification table below. Additionally, the supply
network must be fused at a maximum of 16A, and in the UK, a
10A fuse must be fitted in the power cable plug See Section 2.7
for details of setting line input voltage and changing the line
input fuse.
Power Input Fuse
Measurement and/or guard terminals are designed for connection
at Installation (Overvoltage) Category I. To avoid electric shock
or fire hazard, the instrument terminals must not be directly
connected to the AC line power supply, or to any other voltage
or current source that may (even temporarily) exceed the
instrument's peak ratings.
WARNING TO AVOID INJURY OR DEATH, DO NOT
CONNECT OR DISCONNECT SIGNAL
LEADS WHILE THEY ARE CONNECTED
TO A HAZARDOUS VOLTAGE OR
CURRENT SOURCE. MAKE SURE THAT
ALL LEADS ARE IN A SAFE CONDITION
BEFORE YOU HANDLE THEM IN ANY
WAY.
Make sure that the instrument is correctly protectively earthed
(safety grounded) via the power cable before and while any
other connection is made.
Supply (Line)
Voltage Selection
115 VAC 920274
230 VAC 5A Littlefuse 215005.
0-10 Model 9500B User's Handbook — Safety Section
Fuse Action
TH
TH
Fuse Rating
(IEC)
10A
Fluke
Part No.
920273
Manufacturer
& Type No.
Littlefuse 215010.
Maintenance and Repair
Moving and Cleaning
Observe all applicable local and/or national safety regulations
and rules while performing any work. First disconnect the
instrument from all signal sources, then from the AC line supply
before removing any cover. Any adjustment, parts replacement,
maintenance or repair should be carried out only by the
manufacturer's authorised technical personnel.
WARNING FOR PROTECTION AGAINST INJURY
AND FIRE HAZARD, USE ONLY
MANUFACTURER SUPPLIED PARTS
THAT ARE RELEVANT TO SAFETY.
PERFORM SAFETY TESTS AFTER
REPLACING ANY PART THAT IS
RELEVANT TO SAFETY.
First disconnect the instrument from all signal sources, then
from the AC line supply before moving or cleaning. See Section
8.2 for Routine Maintenance procedures.
Final Width = 215mm
Final Width = 215mm
Observe any additional safety instructions or warnings given in this manual.
Model 9500B User's Handbook — Safety Section 0-11
BLANK PAGE (LEFT-HAND)
Final Width = 215mm
This page deliberately left blank
This page deliberately left blank
Section 1 The Model 9500B High Performance Oscilloscope Calibrator
Final Width = 215mm
Fig. 1.1 General View of Model 9500B with an Active Head
1.1 About Section 1
Section 1 introduces the Model 9500B High Performance Oscilloscope
Calibrator. It is divided into the following sub-sections:
1.2 Introducing the Model 9500B Page
1.2.1 Variants .............................................................. 1.1
1.2.1 Functions ........................................................... 1.2
1.2.2 Operating Modes ............................................... 1-3
1.2.2.1 Manual Mode .................................... 1-3
1.2.2.2 Procedure Mode................................ 1-3
1.2.2.3 Configuration Mode .......................... 1-3
1.2.2.4 Calibration Mode .............................. 1-3
1.2.2.5 Test Mode ......................................... 1-4
1.2.3 System Operation .............................................. 1-4
1.2.3.1 Remote Interface ............................... 1-4
1.2.3.2 Portocal II.......................................... 1-4
1.3 Model 9500B Associated Products and Options 1-4
Descriptions assume 9500B/1100
1.2 Introduction to the Model 9500B
1.2.1 Functions
The Model 9500B is a state-of-the-art calibrator offering oscilloscope test and
calibration capabilities from a single source, providing wide functionality.
(Variant 9500B/1100 is described — for other variants, refer to their specifications
in Section 7.) The functions listed overleaf are not necessarily available via
every model of Active Head.
Section 1: Introducing the Model 9500B 1-1
1.2.1 Functions (Contd.)
Final Width = 215mm
• DC Function:
Output Voltage: (into 50Ω): ±(888µV to 5.56V)
Output Voltage: (into 1MΩ): ±(888µV to 222.4V)
• Square Function:
Frequencies: 10Hz to 100kHz
Output Voltage: (pk-pk into 50Ω): 35.52µV to 5.56V
Output Voltage: (pk-pk into 1MΩ Load): 35.52µV to 222.4V
• Sine Function (Variant 9500B/1100 quoted below);
Frequencies: 100mHz to 550MHz
Output Voltage: (pk-pk into 50Ω & 1MΩ): 4.44mV to 5.56V
Frequencies: 550MHz to 1.1GHz
Output Voltage: (pk-pk into 50Ω & 1M): 4.44mV to 3.35V
Dual Channel
(see Sect. 7 for specifications of other variants):
• Edge Function: Selectable Rising/Falling Edge
Low Edge
: 500ps: Active Head Model 9510 or 9530
Periods: 500ns to 100ms
Output Voltage: (pk-pk into 50Ω &1MΩ): 4.44mV to 3.1V
High Edge
Periods:10µs to 100ms
Fast Edge
Periods: 500ns to 100ms
: 100ns: Active Head Model 9510 or 9530
Output Voltage: (pk-pk into 50Ω): 888mV to 5.56V
(pk-pk into 1MΩ): 888mV to 222.4V
: 150ps: Active Head Model or 9530
Output Voltage: (pk-pk into 50Ω &1MΩ): 4.44mV to 3.1V
• Time Markers Function (Output Voltage pk-pk into 50Ω & 1M)
Square/Sine Waveforms
Squarewave Periods: 9.0091ns to 55s (111MHz to 18.181mHz)
(Highlighted style): 20ns to 55s (50MHz to 18.181mHz)
Output Voltage: 100mV to 1.0V
Sinewave Periods: 450.5ps to 9.009ns (2.22GHz to 111MHz)
Output Voltage: 100mV to 500mV
Sinewave Periods: 909.1ps to 9.009ns (1.1GHz to 111MHz)
Output Voltage: 1.0V
Pulse and Triangle Waveforms
Periods: 900.91ns to 55s (1.11MHz to 18.181mHz)
(Highlighted style): 20ns to 55s (50MHz to 18.181mHz)
Output Voltage: 100mV to 1.0V
(Variant 9500B/1100 quoted below)
(see Sect. 7 for specifications of other variants):
:
;
• Pulse Width Function:
Amplitude: 1Vpk-pk into 50W
Pulse Width: 1ns to 100ns
Rise/Fall Time: <500ps
Frequency: 1kHz to 1MHz
• Current Function:
DC
:
Output Current: ±(88.8µA to 111.2mA)
Square
:
Frequencies: 10Hz to 100kHz
Output Current: 88.8µA pk-pk to 111.2mA pk-pk
• Composite Video Function:
Polarity: Positive and Negative sync
Patterns: Full Raster Selectable: White, Mid Grey or Black.
Amplitude Levels p-p: White: 1V, mid-grey: 0.7V, black: 0.3V. No deviation.
Frame Standards: 625 lines/50Hz, 525 lines/60Hz
Trigger: Calibrator trigger output selectable to Odd Field Start, or
Composite Sync.
• Linear Ramp Function:
Period: 3s, 300ms, 30ms, 3ms.
Ramps: Equal Rise, Fall and Flat divisions per cycle.
Amplitude: 1V pk-pk
Bias: Symmetrical about ground
Trigger Alignment: Start of rising or falling ramp
• Overload Pulse Function:
Pulse Amplitude: 5.0V to 20.0V (0.1V resolution)
Pulse Energy: 1.6J to 50.0J (0.1J resolution)
Polarity: Positive or negative from ground
Pulse Duration: at 20V: 200ms to 6.25s; at 5V: 3.2s to 100s
Power into 50
Repetition Rate: Single manually-triggered event, max repetition rate 0.3Hz.
UUT Scope Trigger: With energy pulse, or Auto trigger at 100Hz
Ω
(Internally calculated from Amplitude and Energy)
: 0.5W to 8W (Internally calculated from Amplitude)
• Zero Skew Function:
Frequencies: 10Hz to 100MHz.
Default Alignment: 9500B output channel skew = ≤50ps.
Align 9500B Channel Output Timing: Using a single oscilloscope channel.
Measure UUT Scope Channel Skew: Using aligned 9500B channels.
• Auxiliary Input:
Signal Path: Automated, passive, relay-switched routing of user's external
Impedance: Input and Output: 50Ω.
3dB Bandwidth: Approx. 400MHz.
Trigger: No trigger pickoff provided, internal trigger not available.
calibration waveforms to any Active Head's BNC connector
via the output multiplexer.
• Load Resistance and Capacitance Measurement:
Resistance Range
Input: 10kΩ to 20MΩ.
Termination:10Ω to 150Ω.
Capacitance
Range: 1pF to 120pF.
:
:
• Reference Frequency Input:
Frequency Range: 1MHz to 20MHz in 1MHz integer steps.
Amplitude Range: 70mV pk-pk to 1V pk-pk.
• Reference Frequency Output:
Frequency Range: 1MHz or 10MHz.
Level into 50
Level into 1M
Ω
: >1.15V.
Ω
: >2.3V.
• Input Leakage Function:
Short/Open Circuit Outputs: Allows testing of UUT oscilloscope input leakage
UUT Scope Trigger: Auto trigger at 100Hz
current.
1-2 Section 1: Introducing the Model 9500B
Descriptions assume 9500B/1100
1.2.2 Operating Modes
In order to be able to calibrate a wide range of different oscilloscope
parameters, flexibility is built into the design of the 9500B. Of the five
major modes only two: 'Manual' and 'Procedure', determine the everyday
front-panel use of the instrument. The other three are concerned with
system configuration, 9500B calibration and 9500B selftest.
1.2.2.1 Manual Mode
In 'Manual' Mode: the 9500B is operated entirely from the front panel.
The operator is in complete charge of the calibration procedure, usually
interpreted locally from the UUT oscilloscope manufacturer's calibration
data. Refer to Sections 3 and 4.
1.2.2.2 Procedure Mode
'Procedure' Mode involves the use of a memorized calibration procedure.
The manufacturer's data for the UUT oscilloscope will have been
interpreted into a series of calibration operations, which are programmed
on to a memory card. When the card is inserted into the 'PROCEDURE'
slot in the front panel, the 9500B will move from operation to operation,
switching the 9500B controls automatically, and issuing a series of
requests for the operator to change UUT switching and connections.
Refer to Section 5.
Portocal II v 1.7 (see paras 1.3) can be used to generate calibration
sequences on procedure cards to calibrate UUT oscilloscopes using the
Model 9500B.
1.2.2.3 Configuration Mode
This mode, requiring a password, provides access for the user-selectable
configuration options. These include:
• Set the internal reference frequency.
• Adjust the threshold for high voltage warning.
• Change the IEEE-488 bus addresses.
• Select or deselect remote emulation (SG5030 or CG5010/5011).
• Enable or disable use of an external printer (Procedure mode only).
• Set the instrument to power-up in either Manual or Procedure mode.
• Alter the passwords required for entry to Configuration and
Calibration modes.
• Select the frequency for External Reference Input.
• Set the frequency of, or disable, External Reference Output.
• Alter the memorized date and time, and its format of presentation.
• Set User language (for Procedure mode only).
• Determine the percentage of UUT measurement tolerance beyond
which a 'Borderline' result is called (in Procedure mode only).
• Enable or disable the use of a data card for 'RESULTS' (Procedure
mode only).
• Enable or disable fields in certificates to accommodate Engineer's
note (Procedure mode only).
• Select the type of certificate required to be printed, alter some of the
certificate details, and re-format its pages (Procedure mode only).
• Clear the displayed list of Procedure mode users.
1.2.2.4 Calibration Mode
Calibration of the 9500B itself cannot proceed until two security
measures have been satisfied:
1. The rear panel 'CAL' switch must be set to its 'ENABLE' position.
Note: The switch is recessed behind a small hole — at shipment this
hole is covered by a paper seal which should not be broken
except for an authorized recalibration.
A broken seal is regarded as invalidating the previous
calibration.
2. An acceptable password must be entered on the screen.
Once into Calibration mode, there are three types of calibration available.
These should be used only under supervision — if it is suspected that
calibration may be required, contact your Fluke Service Center.
•'Special' calibration, enabling automatic calibration of the main
A-D converter.
•'Factory use only' is an initial calibration which is not available to
users, requiring a second password.
•'Standard Calibration' will initiate manual calibration procedures
for those functions requiring recalibration.
Calibration of the 9500B is detailed in Section 9: 'Specification
Verification' and Section 10: 'Calibration' (Adjustment). Those 9500B
calibration sequences which are user-accessible are detailed in Section
10. If it is suspected that some other calibration may be required,
contact your Fluke Service Center.
Final Width = 215mm
Descriptions assume 9500B/1100
Test Mode overleaf
Section 1: Introducing the Model 9500B 1-3
→
1.3 Model 9500B Associated Products
and Options
Final Width = 215mm
1.2.2.5 Test Mode
Three main variants of self test are available for user initiation:
•'Base' Test: Tests the base unit only. No head data is tested.
•'Heads' Test: Tests the fitted Active Heads only, assuming that
base tests have been passed.
•'All' Test: Tests both the base unit and active heads fitted.
Note: In the above three tests, the 9500B will keep a list of all test
failures, including the number of the test and its result. Any
failures can then be recalled using screen keys.
•'Fast' Test: This is the same as the confidence test carried out
at power-on, checking power supplies, basic
operation, etc.
•'Interface' Test: This can be used to check the operation of the
display and its memory, the keyboard and/or printer
connected to the instrument. A blank memory card
inserted in either slot on the front panel can also be
tested (WARNING!: the stored contents of any
memory card subjected to this test will be overwritten!).
It is possible to print out a set of results of selftests. A printer can be
connected directly to the 25-way Centronics™ printer port on the rear
panel. The printer can be enabled from within Configuration mode.
Test procedures and error-code descriptions are given in Section 8. In
the case of a reported or suspected failure, consult your Fluke Service
Center.
1.2.3 System Operation
1.2.3.1 Remote Interface
The instrument can form part of an automated system by means of the
IEEE-488 standard digital interface. The interface has been included
both for automatic calibration of UUT oscilloscopes, and for automatic
calibration of the 9500B itself. The method of connecting to the system
controller and the IEEE-488.2 SCPI command codes are described in
Section 6.
Emulation of the SG5030 and CG5010/5011 is available only via the
remote IEEE-488 interface, as detailed in Section 6, Appendix F.
1.2.4.2 Met/Cal II
The 9500B is included in the number of calibrators accessible through
Met/Cal II which can be used to calibrate UUT oscilloscopes remotely.
1. Active Head™
At least one unit of the following products is necessary to complete the
output connection from the 9500B output channel to one channel of the
UUT oscilloscope.
Model 9510 1.1GHz Output Module (Active Head™) with 500ps
pulse edge capability.
Model 9530 3.2GHz Output Module (Active Head™) with 150ps
and 500ps pulse edge capabilities.
Model 9550 25ps Fast Edge Output Module (Active Head
25ps pulse edge capability only.
Model 9560 6.4GHz Output Module (Active Head
pulse edge capability. Requires 9500-3200 or 9500B3200 base with issue 3.0 firmware or greater.
Check the last section of this manual for an Addendum that describes
any additional Active Head models.
Any one of the fitted heads can be used to provide triggers for the UUT
oscilloscope instead of signals. However, a Trigger Cable (SMC-toBNC) is shipped with the 9500B to provide triggers to a separate trigger
input on the UUT oscilloscope, with a mix of up to four active heads.
2. The following accessories are shipped with the instrument:
Pt. No. Description
401297 Current Loop Assembly for use in Current Function.
630477 Trigger Cable for trigger purposes only, in place of an
Active Head™.
3. The available options for the 9500B are as follows:
Option 60 Carry Case.
Option 90 Rack Mounting Kit.
Line Voltage: The 9500B is configured for use at the correct voltage
at the shipment point. The 9500B can be reconfigured
for a different line voltage, requiring a different power
fuse (Refer to Section 2, paras 2.7.4 and 2.7.5).
TM
TM
) with 70ps
) with
1-4 Section 1: Introducing the Model 9500B
Descriptions assume 9500B/1100
Section 2 Installing the Model 9500B
2.1 About Section 2
Section 2 contains information and instructions for unpacking and
installing the Model 9500B Universal Calibration System. It is divided
into the following sub-sections:
page
2.2 Lifting and Carrying the Model 9500B
2.2.1 Lifting and Carrying from Bench Height .................................2-1
2.2.2 Lifting and Putting Down at Low Level ................................... 2-1
2.3 Unpacking and Inspection ................................................................... 2-2
2.4 Storage ...............................................................................2-2
2.5 Preparation for Shipment .................................................................... 2-2
2.6 Calibration Enable Switch ................................................................... 2-2
2.7 Preparation for Operation....................................................................2-3
2.7.1 Mounting ................................................................................ 2-4
2.7.1.1 Bench Mounting ..................................................... 2-4
2.7.1.2 Rack Mounting ....................................................... 2-4
2.7.2 Power Input ............................................................................ 2-6
2.7.3 Power Cable...........................................................................2-6
2.7.4 Power Fuse ............................................................................ 2-6
2.7.5 Line Voltage ...........................................................................2-7
2.8 Connectors and Pin Designations
2.8.1 IEEE-488 Input/Output Socket ............................................... 2-7
2.8.2 Parallel Port............................................................................2-8
2.8.3 Serial Port .............................................................................. 2-8
2.8.4 Auxiliary Input.........................................................................2-9
2.8.5 Ref Frequency Input...............................................................2-9
2.8.6 Ref Frequency Output............................................................2-9
2.9 Care of Microwave Connectors ........................................................... 2-9
2.2 Lifting and Carrying the 9500B
Caution! The 9500B weighs in excess of 12kg, so take special
care when lifting and carrying the instrument.
2.2.1 Lifting and Carrying from Bench Height
1. Disconnect and remove any cables from the rear panel.
2. The 9500B center of gravity is concentrated at the rear. Tilt the unit
so that it is standing vertically on its rear panel, with the feet towards
you, at the edge of the bench.
3. Grasp the instrument at the bottom (rear panel) corner furthest away
from you, and tilt it slightly to rest against you. Take the weight and
carry it vertically at the same height, making sure that it remains
resting against you.
4. Place the 9500B down at the same level by setting it vertically on
to the surface, then swivel it so that it can be tilted back on to its feet.
2.2.2 Lifting and Putting Down at Low Level
1. Always bend your knees, not your back, when going down. Keep
your back as straight and as vertical as possible.
2. Use the same technique (2.2.1 - 3 above) to hold the instrument's
center of gravity close to you.
Section 2: Installing the Model 9500B 2-1
2.3 Unpacking and
Inspection
Every care is taken in the choice of packing
materials to ensure that your equipment will
reach you in perfect condition.
If the equipment has been subject to excessive
mishandling in transit, the fact will probably
be visible as external damage to the shipping
container and inner carton. In the event of
damage, the shipping container, inner carton
and cushioning material should be kept for the
carrier’s inspection.
Carefully unpack the equipment and check for
external damage to the case, sockets, controls,
etc. If the shipping container and cushioning
material are undamaged, they should be
retained for use in subsequent shipments. If
damage is found notify the carrier and your
sales representative immediately.
Standard accessories (associated products and
options) supplied with the instrument should
be as described in Section 1 and on your
delivery note.
2.4 Storage
The instrument should be stored under cover.
The shipping container provides the most
suitable receptacle for storage, as it provides
the necessary shock isolation for normal
handling operations.
Place the instrument with an active desiccant
sachet inside a sealed bag. Fit the bag into the
cushioning material inside the inner carton,
place this within the corner cushioning blocks
inside the outer shipping container, and locate
the whole package within the specified storage
environment.
2.5 Preparation for
Shipment
If the 9500B is to be transported, please consider
using the carry case, Option 60.
The instrument should be transported under
cover. The original (double) shipping container
should be used to provide shock isolation for
normal handling operations. Any other
container should be double-cushioned,
providing similar shock isolation to the
following approximate internal packing
dimensions:
Length Width Depth
Outer Box 785mm 675mm 440mm
Inner Box 675mm 565mm 315mm
Cushioned to 460mm 430mm 145mm
Place the instrument with an active desiccant
sachet inside a sealed bag. Fit the bag into the
cushioning material inside the inner carton,
place this within the corner cushioning blocks
inside the outer shipping container, and secure
the whole package.
2.6 Calibration Enable
Switch
IMPORTANT
This two-position, 'CAL' switch on the rear
panel protects the instrument calibration
memory. The instrument was initially
calibrated at the factory, so under no
circumstances should the switch be operated,
until immediate recalibration is intended.
For Recalibration:
If Calibration Mode is entered while the switch
is in the 'DISABLE' position, the following
warning message is placed on the screen:
Calibration switch not enabled!
2-2 Section 2: Installing the Model 9500B
2.7 Preparation for Operation
IMPORTANT:
Refer to the Safety Issues section at the front of this manual, together with additional information in the Model 9500B General Specifications,
including Environmental Conditions: Section 7, sub-section 7.1.
Before preparing the Model 9500B calibrator for operation, note the danger warning:
DANGER
THIS INSTRUMENT IS CAPABLE OF DELIVERING AN ELECTRIC SHOCK. UNDER NO CIRCUMSTANCES TOUCH ANY
INSTRUMENT TERMINAL UNLESS YOU ARE FIRST SATISFIED THAT NO DANGEROUS VOLTAGE IS PRESENT.
Other than the main output active head connectors, the connections to the 9500B are via the rear panel:
SAFETY WARNING
1)
DISCONNECT POWER AND SIGNAL LEADS
BEFORE REMOVING COVERS.
2) FOR CONTINUED PROTECTION AGAINST ELECTRIC SHOCK
THE POWER CORD PROTECTIVE CONDUCTOR MUST BE
CONNECTED TO EARTH (GROUND).
3)
FOR CONTINUED PROTECTION AGAINST FIRE
FIT 250V FUSE OF CORRECT RATING
NOTE.
NO USER SERVICEABLE PARTS CONTAINED. DO NOT
REMOVE COVERS, HAZARDOUS VOLTAGES PRESENT.
REFER SERVICE TO QUALIFIED PERSONNEL.
MADE IN THE EC
CALIBRATION SEAL
AUXILIARY
INPUT
≤ 40Vpk
REF FREQUENCY
INPUT
≤ 5Vpk
50Ω
REF FREQUENCY
OUTPUT
1V pk-pk nom
into 50Ω
9500B Rear Panel
FACTORY SET
CAL
ENABLE
DISABLE
7
8
6
LINE VOLTAGE
SELECTION
100V/ 120V
220V/ 240V
POWER INPUT 400VA max FREQUENCY 47- 63 Hz
IEEE-488
SH1 AH1 T6 L4 SR1
RL1 PP0 DC1 DT0 C0 E2
PARALLEL PORTSERIAL PORT
FUSE 5 x 20mm
IEC 127
T10.0 AH
T5.0 AH
2.7.1 Mounting: overleaf
Section 2: Installing the Model 9500B 2-3
→
2.7 Preparation for Operation (Contd.)
2.7.1 Mounting
2.7.1.1 Bench Mounting
The instrument is fitted with four plastic feet
and a tilt stand. It can stand flat on a bench,
positioned so that the cooling-air inlet on the
right side and exhaust apertures on the left side
are not obstructed.
2.7.1.2 Option 90 — Rack Mounting
Option 90 permits the instrument to be mounted
in a standard 19 inch rack. The method of
fitting this option is described below, the
locations being shown in Fig. 2.1.
A. Provision of Option 90
1. Option 90 is provided with all necessary
attachments and fixings.
2. The 9500B is fitted with side extrusions
with holes to accommodate rack mounting
fixing screws.
B. Fitting the Mountings to the 9500B
1. Fit left and right front rack mounting ears
(these are interchangeable) to the 9500B:
a. Assemble the handles to the front ears
as shown in the diagram, and secure
using the four M4 x 12 POZICSK
screws provided.
b. Secure the front ears through the side
extrusions to the chassis, with the
brackets at the front as shown. Use
two M5 x 20 POZIPAN screws, plain
and shakeproof washers provided,
through the lower holes of each ear.
2. Fit left and right rear rack sliders (these are
interchangeable) to the 9500B:
Secure both sliders through the side
extrusions to the chassis, at the rear as
shown. Use the four M5 x 20 POZICSK
screws provided..
(Fig. 2.1)
C. Removing the 9500B Feet and Tilt Stand
(if required)
Remove the feet and tilt stand:
a. Prize off the rubber pads from the four
feet.
b. Undo the two securing screws from
each foot. This releases the feet,
washers and tilt stand so that they can
be detached and stored safely for
possible future use.
D. Fitting the Rear Ears to the Rack
Fit the left and right rear ears (not
interchangeable) to the rack:
a. Fit the eight M6 cage nuts into the
correct cutouts at front and rear of the
rack (see Fig. 2.1). Squeeze the cage
on each nut and insert from the inside
of the rack.
b. Offer up each appropriate ear to the
outside of the back of the rack, with the
tongue facing forward as shown in the
diagram. Secure the ears using four of
the eight M6 x 16 chromium-plated
POZIPAN screws and four M6
washers.
E. Fitting the 9500B into the Rack
With assistance, slide the instrument into
the rack, locating the rear ears in the sliders
on the side extrusions. Push the instrument
home, and secure the front ears to the rack
using the other four M6 x 16 chromiumplated POZIPAN screws and four M6
washers.
2-4 Section 2: Installing the Model 9500B
Rear Ear
Rear Slider
Fig. 2.1 Option 90 — Rack Mounting Kit — Fitting
Front Ear
Section 2: Installing the Model 9500B 2-5
2.7 Preparation for Operation (Contd.)
2.7.2 Power Input
The recessed POWER INPUT plug, POWER
FUSE, POWER SWITCH and LINE
VOLTAGE SELECTOR are contained in an
integral filtered module on the right of the rear
panel (looking from behind the unit).
LINE VOLTAGE
SELECTION
100V/ 120V
220V/ 240V
POWER INPUT 400VA max FREQUENCY 47- 63 Hz
FUSE 5 x 20mm
IEC 127
T10.0 AH
T5.0 AH
A window in the fuse drawer allows the line
voltage selection to be inspected. To inspect
the fuse rating the fuse drawer must be taken
out (Refer to sub-section 2.7.4. First switch
off and remove the power cable).
2.7.3 Power Cable
The detachable supply cable, comprising two
meters of 3-core PVC sheath cable permanently
moulded to a fully-shrouded 3-pin socket, fits
in the POWER INPUT plug recess.
2.7.4 Power Fuse
The fuse rating is:
T 5.0A HBC, 250V, IEC127 for 220/240V line supply.
T 10.0A HBC, 250V, IEC127 for 100/120V line supply.
It is fitted into the reverse side of the Fuse Drawer, in the Power Input module on the rear panel,
and must be of High Breaking Capacity.
WARNING
MAKE SURE THAT ONLY FUSES WITH THE REQUIRED RATED
CURRENT AND OF THE SPECIFIED TYPE ARE USED FOR
REPLACEMENT. SEE THE SAFETY ISSUES SECTION AT THE
FRONT OF THIS MANUAL.
Fuse Drawer
Fuse
Drawer
Release
Catch
Recess for
Screwdriver
Voltage
Indicator
Window
Voltage
Selector
Block
Removed
Fuse position
Fuse Drawer
Reversed
2.7.4.1 Power Fuse Replacement
When the power fuse is to be replaced, proceed as follows:
The supply lead must be connected to a
grounded outlet ensuring that the ground lead
1. Ensure that the POWER CABLE is removed. Insert a small screwdriver blade in the
is connected.
SEE THE SAFETY ISSUES SECTION AT
THE FRONT OF THIS MANUAL.
2. Check the fuse and replace if required.
3. Check that the desired voltage is visible at the front of the voltage selector block inside the
4. Insert the fuse drawer into the module and press until the catch is heard to click into place.
2-6 Section 2: Installing the Model 9500B
narrow recess beneath the catch under the fuse drawer; lever gently downwards until the
catch releases. Pull the drawer out, and reverse it to see the fuse.
power module cavity.
2.7.5 Line Voltage
The 9500B is operative for line voltages in the
ranges: 100/120/220/240V, 48-63Hz.
To accommodate these ranges, a small voltage
selector block is housed behind the POWER
FUSE drawer.
2.7.5.1 Selection of Operating Line
Voltage
Ensure that the POWER CABLE is
removed.
1. Insert a small screwdriver blade in the
narrow recess beneath the catch under the
fuse drawer; lever gently downwards until
the catch releases. Pull the drawer out to
reveal the grey voltage selector block.
2. Hook a small finger into the block in the
square recess in its base; pull to disengage
its contacts, and remove from the module
cavity.
3. Rotate the voltage selector board until the
desired voltage faces outward.
4. Ensure that the block is upright. Re-insert
the block firmly into its cavity in the
module.
5. Check the fuse if required (see paras 2.7.4),
then insert the fuse drawer into the module
and press until the catch is heard to click
into place.
6. Check that the desired voltage is visible in
the cutout in the fuse drawer.
2.8
Connectors and Pin Designations
2.8.1 IEEE-488 Input/Output (Rear Panel)
This 24-way input/output connector on the rear panel, which is labelled IEEE-488, is
directly compatible with the IEEE-488 and IEC-625 Interface Bus standards.
Pin Layout
Pin Designations
Pin No. Name Description
1 DIO 1 Data Input Output Line 1
2 DIO 2 Data Input Output Line 2
3 DIO 3 Data Input Output Line 3
4 DIO 4 Data Input Output Line 4
5 EOI End or Identify
6 DAV Data Valid
7 NRFD Not ready for Data
8 NDAC Not Data Accepted
9 IFC Interface Clear
10 SRQ Service Request
11 ATN Attention
12 SHIELD Screening on cable (connected to Safety Ground)
13 DIO 5 Data Input Output Line 5
14 DIO 6 Data Input Output Line 6
15 DIO 7 Data Input Output Line 7
16 DIO 8 Data Input Output Line 8
17 REN Remote Enable
18 GND 6 Ground wire of twisted pair with DAV
19 GND 7 Ground wire of twisted pair with NRFD
20 GND 8 Ground wire of twisted pair with NDAC
21 GND 9 Ground wire of twisted pair with IFC
22 GND 10 Ground wire of twisted pair with SRQ
23 GND 11 Ground wire of twisted pair with ATN
24 0V_F Logic Ground (Internally associated with Safety Ground)
112
1324
Continued overleaf
→
Section 2: Installing the Model 9500B 2-7
2.8
Connectors and Pin Designations
(Contd.)
2.8.2 Parallel Port (Rear Panel)
This 25 way D-Type socket is located beneath the IEEE-488
connector on the rear panel. Its connections are similar to the 25way printer port on PCs, carrying control and data for an external
printer as designated in the table.
Pin Layout
Pin Designations
9500B 9500B 9500B Description or
Pin No. Signal Name I/O Common Meaning
1 STROBE_L Output 1µs pulse to cause printer to read one byte
2 DO1 Output Data bit 1
3 DO2 Output Data bit 2
4 DO3 Output Data bit 3
5 DO4 Output Data bit 4
6 DO5 Output Data bit 5
7 DO6 Output Data bit 6
8 DO7 Output Data bit 7
9 DO8 Output Data bit 8
10 ACKNLG_L Input Pulse to indicate that the printer has
11 BUSY_H Input Printer is temporarily busy and cannot
12 P_END_H Input Printer is out of paper.
13 SLCT_H Input Printer is in on-line state, or connected.
14 AUTO_FEED_L Output Paper is automatically fed 1 line after printing.
15 ERROR_L Input Printer is in 'Paper End', 'Off-line' or 'Error'
16 INIT_L Output Commands printer to reset to power-up
17 SLCT_IN_L Output Commands some printers to accept data.
18-25 0V_F Output Digital Common
PARALLEL PORT
of data from data bus DO1 — DO8.
accepted a data byte, and is ready for more
data.
receive data.
This line is fixed _H (high) by the 9500B to
disable auto feed.
state.
state, and in most printers to clear its print
buffer.
This line is fixed _L (low) by the 9500B.
113
1425
2.8.3 Serial Port (Rear Panel)
This 9-way D-Type socket is located to the left of the Parallel
port connector on the rear panel. Its connections are RS232compatible; carrying control and power supplies for, and receiving
data from, an external tracker ball.
Pin Layout
Pin Designations
Pin No. Name Description
1 - - - Not used
2 RXD0_L
3 TXD0_L
4 DTR0_H Data Terminal Ready
5 0V_F Digital Common
6 DSR0_H Data Set Ready
7 RTS0_H Request to Send
8 CTS0_H Clear to Send
9 - - - Not used
_H ≡ Logic-1 active; _L ≡ Logic-Ø active.
SERIAL PORT
Serial Data: Tracker Ball → 9500B
Serial Data: 9500B → Tracker Ball
_H ≡ Logic-1 active; _L ≡ Logic-Ø active.
2-8 Section 2: Installing the Model 9500B
2.8.4 Auxiliary Input (Rear Panel)
AUXILIARY
INPUT
≤ 40Vpk
This SMC connector is located at the upper center of the rear panel,
providing an internal, passive, relay switched route for a user's external
calibration signal, via any one of five output channels to an Active
Head's BNC or PC3.5 connector .
Internal controls are provided (via front-panel keys or via the IEEE-488
/ SCPI interface) to switch the signal between channels. For further
details see Section 4, para 4.15.5 and Section 6, para 6.6.5.17.
2.8.5 Ref Frequency Input (Rear Panel)
REF FREQUENCY
INPUT
≤ 5Vpk
50Ω
This BNC connector is located at the middle center of the rear panel,
providing an input for a signal of good frequency accuracy, for use as
a frequency reference in the 9500B.
Internal controls are provided (via front-panel keys in Configuration
mode) to select the signal as reference. For further details see Section
3, para 3.4.3.10.
2.9 Care of Microwave Connectors
It is necessary to observe certain basic precautions when using microwave
connectors, in order to achieve accurate and repeatable calibration and
measurement results. This will also help to extend connector life.
Good practice includes:
• When not in use, ensure that connectors are kept clean. This is best
done by using a plastic endcap. Avoid touching components whose
function is to make electrical contact.
• Visually inspect all connectors, looking for dents, scratches and
metal particles. Never use damaged connectors.
• Clean connectors properly, particularly connector threads and
dielectric faces. Try compressed air first, and if this is insufficient,
use isopropyl alcohol. Avoid spillage, and never use abrasives.
• When making connections, be careful to align connectors carefully,
avoiding bending forces. Always make the initial connection
lightly to avoid cross-threading, and use a correctly-set torque
wrench for final tightening.
2.8.6 Ref Frequency Output (Rear Panel)
REF FREQUENCY
OUTPUT
1V pk-pk nom
into 50Ω
This BNC connector is located at the lower center of the rear panel,
providing an output reference signal of the same frequency accuracy as
the 9500B.
Internal controls are provided (via front-panel keys in Configuration
mode) to select the signal as reference. For further details see Section
3, para 3.4.3.11.
Section 2: Installing the Model 9500B 2-9
BLANK PAGE (LEFT-HAND)
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Section 3 Model 9500B Controls
3.1 About Section 3
3.1.1 Introduction
Section 3 is a detailed description of the 9500B operating controls;
starting with a general description of the front panel. The user
preferences 'Pref' key and screen is described, followed by a brief
description of Mode selection.
3.1.2 Section Contents
Section 3 is divided into the following sub-sections:
page
3.1 About Section 3
3.2 Introduction to the Front Panel
3.2.1 Local and Remote Operation .................................................3-2
3.2.1.1 Remote, Semi-Automatic and Manual Calibration
of UUT Oscilloscopes ............................................3-2
3.2.1.2 Use of Procedure Memory Cards .......................... 3-2
3.2.1.3 Manual and Remote Calibration of the 9500B Itself3-2
3.2.1.4 General Arrangement of Front Panel Controls ......3-2
3.2.2 Front Panel Features ............................................................. 3-3
3.2.2.1 Liquid Crystal Display and Screen Keys ................3-3
3.2.2.2 'OSCILLOSCOPE CALIBRATOR' Panel ............... 3-3
3.2.2.3 Output Connections ............................................... 3-3
3.2.2.4 'Procedure' and 'Results' Memory Card Slots ........ 3-3
3.2.2.5 'Standby' Push-Button............................................3-3
3.2.2.6 Power On/Off Switch ..............................................3-3
3.2.3 Output Controls ...................................................................... 3-4
3.2.3.1 Front Panel Control Sets........................................3-4
3.2.3.2 Entry to Manual Mode............................................ 3-4
3.2.3.3 Manual Mode — Typical Menu Screen.................. 3-4
3.2.3.4 Editing on the Screen.............................................3-4
3.3 Preferences
3.3.1 Pref Selection .........................................................................3-6
3.3.1.1 Pref Overview ........................................................3-6
3.3.1.2 Changing the Parameters ......................................3-6
3.3.1.3 Screen Contrast ..................................................... 3-6
3.3.1.4 Scope Mode Amplitude Steps................................3-6
3.3.1.5 Scope Mode Time Steps........................................3-6
3.3.1.6 Deviation Display ................................................... 3-7
3.4 Modes of Operation
3.4.1 Mode Selection ......................................................................3-8
3.4.1.1 Mode Overview ...................................................... 3-8
3.4.2 Passwords and Access .......................................................... 3-9
3.4.3 Configuration Mode ................................................................3-9
3.4.3.1 'MORE' Configuration............................................. 3-9
3.4.3.2 'Ref Frequency' .................................................... 3-10
3.4.3.3 'Safety voltage' ..................................................... 3-10
3.4.3.4 'Bus address' ........................................................ 3-10
3.4.3.5 'Printer' ................................................................. 3-11
3.4.3.6 'Power-up mode' ..................................................3-11
3.4.3.7 'NEW PASSWORD' .............................................3-12
3.4.3.8 'CALIB Password' ................................................. 3-12
3.4.3.9 'CONFIG Password' ............................................. 3-12
3.4.3.10 'Ext ref in'.............................................................. 3-13
3.4.3.11 'Ext ref out' ...........................................................3-13
3.4.3.12 'DATE TIME' ......................................................... 3-13
3.4.3.13 'HEAD CONFIG' ................................................... 3-14
3.4.3.14 'MORE' Configuration........................................... 3-14
3.4.3.15 'Language' ............................................................ 3-14
3.4.3.16 'Border line' ..........................................................3-14
3.4.3.17 'Results card' ........................................................ 3-15
3.4.3.18 'Engineers Notes' .................................................3-15
3.4.3.19 'Certificate'............................................................ 3-16
3.4.3.20 'CERT STYLE'...................................................... 3-16
3.4.3.21 'PAGE SETUP' ..................................................... 3-16
3.4.3.22 'Start page number' .............................................. 3-16
3.4.3.23 'Page length, header and footer sizes' .................3-17
3.4.3.24 'Pass indicator' ..................................................... 3-17
3.4.3.25 'Appended message' ............................................ 3-17
3.4.3.26 'LAB DETAILS' ..................................................... 3-17
3.4.3.27 'LAB NAME' .......................................................... 3-17
3.4.3.28 Laboratory Temperature and Humidity ................3-17
3.4.3.29 'CLEAR USER LIST' ............................................ 3-18
3.4.3.30 '*IDN CONFIG' ..................................................... 3-18
page
Final Width = 215mm
Descriptions assume 9500B/1100
Section 3: Model 9500B Controls: Modes of Operation 3-1
3.2 Introduction to the Front Panel
3.2.1 Local and Remote Operation
3.2.1.1 Remote, Semi-Automatic and Manual Calibration of UUT Oscilloscopes
The 9500B has been designed to present three main user interfaces for control of UUT calibration:
• Fully-automatic operation for UUT oscilloscopes which are remotely controllable on the IEEE-488 Instrumentation Control Interface,
employing IEEE-488.2/SCPI protocols. The 9500B also includes emulation modes which minimize the software effort required for
integration into existing calibration systems designed around Tektronix CG5011 and SG5030 calibrators. Refer to Section 6.
• Semi-automatic operation using procedure memory cards to drive the 9500B, with control of the subject UUT being implemented by a form
of the UUT manufacturer's procedure through a series of user prompts. Refer to Section 5.
• Manual operation from the front panel, again with control of the subject UUT being implemented by the UUT manufacturer's procedure. Refer
to Section 4.
3.2.1.2 Use of Procedure Memory Cards
This is a form of assisted (semi-automatic) calibration, in which a memory card for a specific UUT oscilloscope is inserted into PCMCIA SLOT 1.
Running Procedure Mode will generate instructions to the operator, while setting output values on the 9500B. The sequence of these instructions
and outputs, the output specifications and the pass/fail limits conform the UUT manufacturer's calibration procedure.
3.2.1.3 Manual and Remote Calibration of the 9500B Itself
The 9500B itself must periodically be verified or calibrated against suitable traceable standards. The calibration processes for the mainframe and
Active Heads are available manually, but to gain the advantages of simplicity and throughput provided by automated procedures, these process
commands are also available via the remote interface (IEEE-488.2/SCPI protocols - Section 6.). The 9500B communicates with programmable
standards under the direction of external Control Software.
3.2.1.4 General Arrangement of Front Panel Controls
The front panel is divided into three main areas:
Standby/Normal
Center: A 'Menu' and 'Output Display' LCD screen, with grouped soft keys.
Right: A control panel, used to select and adjust operational Functions and Modes, with two slots to accept memory cards.
Left: Output Connectors, used for connection of the active heads.
These features are described in the following paragraphs.
3-2 Section 3: Model 9500B Controls: Modes of Operation Descriptions assume 9500B/1100
3.2.2 Front Panel Features
3.2.2.1 Liquid Crystal Display and Screen Keys
The 9500B communicates with the operator by presenting essential information on the LCD screen. For example: the output value generally
appears in large characters below the center of the screen, accompanied by its units. An operator can move through a series of menu screens,
choosing options from those presented on the screen.
Eleven soft keys ('screen' keys) are grouped below and to the right of the screen. These are labelled by characters or symbols representing menu
choices, which appear in reserved display areas on the screen next to the keys. Main functions are selected by buttons on the 'Oscilloscope
Calibrator' panel.
3.2.2.2 'OSCILLOSCOPE CALIBRATOR' Panel
This panel carries the main controls used to select the operational functions and modes of the calibrator:
a. Major Function keys are used mainly in Manual mode (Section 4) and Calibration mode (Section 10). They are arranged down the right
edge:
: Waveform (select Square with direction, or ±DCV using screen keys).
: Sinewave (select amplitudes and frequency using screen keys and cursor controls).
: Edge (select polarity using screen keys).
: Timing Markers (select Waveform and Frequency/Period using screen keys — including Line Frequency).
Aux : Auxiliary Functions (select Current, Composite Video, Linear Ramp, Overload Pulse, UUT Input Leakage Test, Auxiliary
Input, Channel Skew, and Load Resistance or Load Capacitance measurement using screen keys).
b. Mode Key, under the Function keys. The modes are: 'Procedure', 'Manual', 'Configuration', 'Calibration' and 'Test' (refer
to sub-section 3.4).
c. Preferences Key, the bottom key. The user-preferences provided are display adjustments of: 'Screen Contrast', 'Amplitude
step' factor sequence, 'Time step' factor sequence and Deviation/UUT Error toggle (refer to sub-section 3.3).
d. OUTPUT OFF and ON keys, with an 'ON' state indicator LED, in a separate column due to their importance.
e. Alpha-numeric keypad, used for various purposes, to be described later.
f. The (Tab) key, Cursor keys and Spinwheel: These select and increment or decrement displayed quantities.
3.2.2.3 Output Connections
The ten output connectors are located on the left of the panel. Use of these connectors is described in Section 4.
3.2.2.4 PCMCIA SLOT 1 and PCMCIA SLOT 2
These slots are included mainly for Procedure mode (Section 5), although there are secondary uses.
3.2.2.5 'Standby' Push-Button
Pressing this button, in the bottom right corner of the front panel, will toggle between normal operation (LED green) and 'standby' (LED red).
The instrument will transfer automatically from normal operation to standby some 15 minutes after the most recent operation, then pressing the
button will immediately restore normal operation.
3.2.2.6 Power On/Off Switch
Line power to the 9500B is switched On and Off using a switch at the left of the instrument, on the rear panel. Up is On; Down is Off.
Section 3: Model 9500B Controls: Modes of Operation 3-3Descriptions assume 9500B/1100
Final Width = 215mm
3.2.3 Output Controls
The aim of this discussion is to become familiar with the 9500B
interactive display, and the manipulation of front-panel controls.
We have chosen DC/Square as a typical function for manipulation (it is
also likely to be the most familiar to most new operators).
Full details of the DC/Square function are not given here, they appear
in Section 4 Subsection 4.5.
3.2.3.1 Front Panel Control Sets
We have already seen that there are two sets of front-panel controls
which manipulate the output configuration, but briefly, to establish a
base-line, here they are again:
1. Controls positioned in the right half of the front panel. They are:
a. Major Function keys, arranged in a column down the right
edge.
b. Moving left, the OUTPUT OFF and ON keys, arranged in a
separate column because of their importance.
c. Alpha-numeric Keypad.
d. Cursor Controls:
See paras 3.2.3.4.
2. Screen Soft Keys, around the display itself, are used to select subfunctions and individual parameters (identified in the areas used as
screen key labels).
Before we proceed, we need to identify the components present on a
typical menu screen. A representation of a DC/Square display in
Manual mode is given as Fig 3.2.1.
3.2.3.2 Entry to Manual Mode
This discussion is conducted in Manual mode, which you may not
recognize at present. Refer to paras 3.4.1. To enter MANUAL mode:
1. Press the front panel Mode key;
2. Press the MANUAL screen key beneath the display.
3.2.3.3 Manual Mode — Typical Menu Screen
Ensure that the 9500B is installed and switched on as in Section 2. If,
after selecting Manual mode, the display does not correspond to Fig.
3.2.1, press the
key in the top right corner of the front panel.
Familiarize yourself with Fig. 3.2.1. This is the default version of
the menu screen which will appear when you enter DC/Square
function for the first time (unless the default has been changed in
Config Mode).
N.B. Contrast inversions of symbols and fields indicate those elements
which have been selected, 'Scope Mode' (1-2-5) only in this
case.
3.2.3.4 Editing on the Screen
We have already mentioned 'Scope Mode'. This is not a major mode of
the same importance as Manual mode, but identifies a specific means
of making selections or entering changes on the screen.
In all editing, the Tab key
adjustment.
There are two modes, selected by the right-most soft key on the bottom
row beneath the screen, which toggles between 'Direct' mode
and 'Scope' mode
1
2
5
values presented on the screen:
1
1. Direct Mode
2
5
Once the key has selected the required variable, two triangular
markers presented above and below a digit in the selected numeric
value form a cursor, and two methods of value adjustment are
available:
a. Digit Edit.
Cursor keys:
Spinwheel: Increments or decrements the selected digit, in
place of the
is used to select the required variable for
1.Ø
encompassing three main ways of adjusting
1.Ø
and
select a digit for adjustment, then
and
decrements the digit selected by the
control the screen cursor to
increments
cursor.
and
keys.
1
2
1.Ø
5
3-4 Section 3: Model 9500B Controls: Modes of Operation
Descriptions assume 9500B/1100
b. Numeric-Entry Edit.
Key Pad: Typing any character on the numeric keypad
will set up a 'box' beneath a smaller version of
the selected numeric value, and place the typed
character in the box. The right side key labels
change to give a choice of units.
Units: After the new value has been typed on the
keypad, the required units can be chosen from
the right side soft keys. Pressing one of these
keys will cause the display to revert to the 'Digit
Edit' format, with the same numeric value
remaining selected by the two triangles.
'Enter': The keypad 'Enter' (ø) key can be used instead
of one of the units keys to revert to 'Digit Edit'
format. In this case the 9500B firmware will
always impose the basic units (not multiples or
sub-multiples).
Further Use: Either Digit Edit or Numeric-Entry Edit can be
used for all selectable variables on the screen.
1
2
3. Scope Mode
1.Ø
5
This mode differs from Direct Mode only in that adjustment of
many screen variables is constrained to a series of 'Stepped Values',
which run in a sequence of 1 : 2 : 5 factor steps (The 'Pref' facility,
described overleaf, can be used to change the factor sequence to
match certain oscilloscopes with 1 : 2 : 2.5 : 4 : 5 steps). Selecting
one of these variables places a 'barred' cursor above and below the
whole numeric value (shown in Fig 3.2.1), and only one method of
value adjustment is available:
Cursor keys:
and
are not used. Adjustment is
carried out using the
and
keys (or
spinwheel) to increment or decrement the whole
value through the pre-defined factor steps.
These forms of editing are also described in greater detail, with
illustrations, in Section 4, sub-section 4.4.
Function
Icon
'Barred'
Selection
Cursor
5.ØØ mV/div x4 = 2Ø.ØØØ mV
Numeric
Output
Values
Output
Value
Units
Descriptions assume 9500B/1100
O/P Amplitude = 2Ø.ØØØ mV
TODAY'S DATE TIME
Soft key label
not used with
DC/Square
Selected SIGNAL
Channel
Output
State
SIGNAL CH1 5ØΩ
OFF
TRIGGER CH5 5ØΩ
Selected TRIGGER
Channel or
'No Trigger' State
Expected Load
Impedances
x 1Ø
1Ø
pk-pk
∆ = Ø
Deviation = ØØ.ØØ %
pk-pk
Frequency = 1.ØØØØ kHz
1
2
1.Ø
5
Toggles
to Select
'Scope' or
'Direct Entry'
Mode
Screen
Key
Effects
All bottom soft key labels
may be employed for
alternative or additional
Default
Screen
WAVE
FORM
Accesses
Waveform
Menu
(Toggle)
Applies
Ground
Condition
(O/P On)
CHANNEL
SELECT
Accesses
Channel
Selection
Menu
Fig. 3.2.1 Manual Mode — Startup Default Settings
Section 3: Model 9500B Controls: Modes of Operation 3-5
Multiplies Selected
Value by 10
Divides Selected
Value by 10
Toggles Deviation between
zero and previously set value
These three soft key
labels not used with
the DC/Square
Default Screen
Uses of all the right side
soft key labels are
dependent on the field
selected on the main part
of the screen
selections
Final Width = 215mm
Final Width = 215mm
Mod
3.3 Preferences
3.3.1 Pref Selection
The Pref key is highlighted in Fig. 3.3.1, below:
Fig. 3.3.1 'Pref' Key
3.3.1.1 Pref Overview
The Pref key sets up a special display which offers adjustment of four
parameters, shown in Fig. 3.3.2. This menu can be exited only by
pressing EXIT, or re-pressing the Pref key.
Preferences
e
Pref
The Preference screen can be displayed in all modes and functions
without disturbing the function setup (except that under certain conditions
with OUTPUT ON, the output will be turned off).
Preference selections are non-volatile. Once a parameter has been set
up as required, it will be remembered by the 9500B through changes of
mode and function, also being restored after Power down / Power up.
Contrast = 10
Amplitude step = 1-2-5
Time step = 1-2-5
Deviation Display= Deviation
TODAY'S DATE TIME
EXIT
Fig. 3.3.2 'Pref' Parameters
3.3.1.2 Changing the Parameters
The mechanism for adjusting parameters is known as 'Digit Edit'. A
Cursor of horizontal lines enclosing screen characters indicate the
parameter selected for adjustment. This can be moved from one
parameter to another using the
Once the cursor has been moved to the required parameter, the adjustment
is carried out using either the spinwheel or the
cursor keys. The Left and Right cursor keys have no effect.
(Tab) key.
(Up) /
(Down)
3.3.1.3 Screen Contrast
The front panel screen is viewable from a wide range of vertical and
horizontal angles. For best contrast at a fixed angular sight line in the
vertical plane, the 'Contrast' parameter on the screen can set the sight
line to one of twenty-seven different angles, represented by the numbers
1-27. The range from numbers 10-12 will provide good contrast from
head-on viewing positions.
To change the contrast:
1. Use the tab key to position the cursor on the contrast number.
2. Use the spinwheel or up/down cursor keys to adjust for your best
display contrast, by increasing or decreasing the contrast number.
3.3.1.4 Scope Mode Amplitude Steps
For most UUT oscilloscopes, amplitude sensitivity can be increased or
decreased at values which run in a sequence of 1 : 2 : 5 factor steps. The
Scope Mode 'Amplitude step' parameter can change the sequence to
match certain oscilloscopes with 1 : 2 : 2.5 : 4 : 5 factor steps.
To change the Amplitude steps parameter:
1. Use the tab key to position the cursor on the Amplitude steps
sequence.
2. Use the spinwheel or up/down cursor keys to toggle between
1—2—5 and 1—2—2.5—4—5 factor steps.
3.3.1.5 Scope Mode Time Steps
This operates on the same basis as Amplitude steps, but the result is a
change in output period (and frequency) in the chosen factor steps.
To change the Time steps parameter:
1. Use the tab key to position the cursor on the Time steps sequence.
2. Use the spinwheel or up/down cursor keys to toggle between
1—2—5 and 1—2—2.5—4—5 factor steps.
3-6 Section 3: Model 9500B Controls: Modes of Operation
Descriptions assume 9500B/1100
3.3.1.6 Deviation Display
The deviation of an output signal amplitude from the factored output
step value is controllable, within ±11.2%, from the function screen. So
a signal of 1V DC can be adjusted from 0.8880V to 1.1120V using the
deviation control.
To extend the usefulness of this facility, the deviation display value can
be expressed as 'UUT Error'. This permits use of the deviation control
to adjust the 9500B output until the UUT oscilloscope presentation
itself shows the required value. The 9500B output value can be read off,
but in addition, the UUT's error is presented on the 9500B screen.
Note that both the UUT error and the deviation are expressed as a
percentage (ratios). This means that if the deviation has to be adjusted
to +10.00%, the UUT error is -9.091%. An example will show why:
Example of 'UUT Error'
1. Assume a 1V UUT nominal cal point.
2. 9500B set to 1V: UUT reading is low.
3. 9500B 'Deviation' increased until UUT reading is 1V nominal —
Deviation value is +10% and 9500B output is 1.1V.
4. A UUT reading of '1V' represents 1.1 x 1V, so UUT original reading
for 1V input was 1V ÷ 1.1 = 0.909091V.
5. The UUT Error is therefore 0.909091V - 1V = -0.09091V.
6. The UUT percentage Error is (0.09091V ÷ 1V) x 100%,
= -9.09091%
To change the Deviation parameter:
1. Use the tab key to position the cursor on the Deviation display
parameter.
2. Use the spinwheel or up/down cursor keys to toggle between
'Deviation' and 'UUT Error'.
Final Width = 215mm
Descriptions assume 9500B/1100
Section 3: Model 9500B Controls: Modes of Operation 3-7
Final Width = 215mm
3.4 Modes of Operation
3.4.1 Mode Selection
The Mode key is highlighted in Fig. 3.4.1, below:
Fig. 3.4.1 'Mode' Key
3.4.1.1 Mode Overview
The Mode key sets up a special menu display, offering selection from
five primary modes. This menu can be exited only by pressing one of
the five screen keys.
Mode Selection
Aux
Mode
Pref
Fig. 3.4.2 Mode Selection Menu
Four of the modes are described in later sections, but because of its
wide-ranging effects, Configuration Mode is dealt with in this section.
The five modes are:
PROC
For calibration of a specific type of UUT, the sequence of 9500B output
selections is determined by a 'Procedure' memory card, placed in the
left-hand PCMCIA SLOT 1 beneath the panel outline. Results can be
printed, or recorded in a second 'Data' card, placed in the right-hand
PCMCIA SLOT 2. Refer to Section 5.
MANUAL
The output is selected and adjusted entirely from the front panel. Refer
to Section 4.
CONFIG
On entry to Configuration mode, parameters are protected by password.
These include: Power-On default mode (Manual or Procedure modes);
Present Time and Date; Enable Printing; Reformat Printed Certificates;
etc. Refer to Sub-section 3.4.2.
CALIB
This mode is protected by switch and password. On entry to Calibration
mode, the operator can process the calibration of the 9500B itself.
Calibration can be controlled from the front panel, or via the IEEE-488
Interface. Refer to Section 10.
TEST
This mode permits an operator to initiate and interact with any of a series
of tests as follows: 'Base'; 'Heads'; 'All'; 'Fast' or 'Interface'. Refer to
Section 8.
= Procedure Mode:
= Manual Mode:
= Configuration Mode:
= Calibration Mode:
= Test Mode:
Select required mode using softkeys
TODAY'S DATE TIME
PROC MANUAL CONFIG CALIB TEST
3-8 Section 3: Model 9500B Controls: Modes of Operation
Descriptions assume 9500B/1100
3.4.2 Passwords and
Access
1. All Configuration mode selections require
a password. When the 9500B is shipped
from new, the password requirement is
enabled to avoid unauthorized access.
2. It is recommended that both passwords be
changed, for security purposes, at the
earliest opportunity.
3. The shipment 'Configuration' password is
12321 (as typed on the front panel keypad
when the Password Entry screen for
Configuration mode is showing). It is
stated here to allow entry to Configuration
mode by personnel authorized by local
management, and permit subsequent
access to the means of altering the password
itself. The necessary process is detailed
later in this sub-section.
4. A second (different) password will be
required to allow entry to Calibration mode
as authorized by local management. The
shipment version of the Calibration mode
password is 2→3→5→7 (as typed on the
front panel keypad when the Password
Entry screen for Calibration mode is
showing) The necessary process for
changing this password is also detailed
later in this sub-section.
3.4.3 Configuration Mode
Configuration Mode is used to change the
settings of those parameters which have been
placed under user control.
N.B. A password is required for access to
change settings.
When changing configuration, start as follows:
1. Press the Mode key to obtain the 'Mode
Selection' menu screen.
2. Press the CONFIG screen key at the center
of the bottom row to progress into
'Configuration' mode. The 9500B will
transfer to the 'Configuration' menu screen:
Configuration
Ser. No. XXXXXX Rev. XXX
Options : 1.1 GHz Normal xtal
Present Settings:
Ref frequency 5Ø.ØØØ kHz
Safety Voltage 1ØØ.ØØ V
Bus Address 1
Printer NONE
Power-up mode Manual
Ext ref in 1Ø MHz
Ext ref in Disabled
TODAY'S DATE TIME
MORE
3. The screen shows the present settings of
some of the parameters which can be
changed in Configuration mode.
4. The screen also indicates which hardware
Option 9500B/600, 9500B/1100 or 9500B/
3200 is fitted. These cannot be changed in
Configuration mode.
3.4.3.1 'MORE' Configuration
1. To gain access to alter Configuration mode
options, a password will be required. (Refer
to the arrangements made for 'shipment'
passwords described in Para 3.4.2)
2. The password requirement will be invoked
by pressing the MORE screen key on the
right of the bottom row. The 9500B will
transfer to the 'Password Entry' screen:
3. When you enter your password using the
Password Entry
For Configuration
Enter password :
TODAY'S DATE TIME
EXIT
alpha-numeric keypad, security icons will
appear on the screen as you type. Finally
press the ↵ key.
If the password is incorrect: an error
message will be given and the security
icons will be removed, enabling a new
attempt to enter the password.
The 'EXIT' screen key acts to escape, back
to the previous screen.
4. The correct password, followed by ↵, will
provide entry to the main 'Configuration'
menu screen, showing the present settings
of the parameters which now can be
changed using screen keys whose labels
appear on the display:
5. Pressing the 'MORE' key again will
Configuration
Ser. No. XXXXXX Rev. XXX
Options : 1.1 GHz Normal xtal
Present Settings:
Ref frequency 5Ø.ØØØ kHz
Safety Voltage 1ØØ.ØØ V
Bus Address 1
Printer NONE
Power-up mode Manual
Ext ref in 1Ø MHz
Ext ref in Disabled
TODAY'S DATE TIME
REF
VOLTAGE
FREQ
LIMIT
provide entry to a second 'Configuration'
menu screen, showing the present settings
of other parameters. Refer to para 3.4.3.14.
DATE
TIME
HEAD
CONFIG
BUS
ADDRESS
PRINTER
POWER
UP MODE
NEW
PASSWRD
EXT REF
IN
EXT REF
OUT
MORE
Section 3: Model 9500B Controls: Modes of Operation 3-9Descriptions assume 9500B/1100
3.4.3.2 'Ref Frequency'
Use of Reference Frequency
The reference frequency is used mainly in
assessments of UUT oscilloscope bandwidth,
a commonly used frequency for this purpose
being 50kHz. In the 9500B, for ease of
operation in certain functions, the output can
be changed from the selected frequency to the
reference frequency and back by a simple
toggle switching action.
In the 9500B, the default reference frequency
is set at 50kHz, but users can change this in
Configuration mode to match the frequency
used in procedures for individual oscilloscopes.
1. For access to alter the reference frequency,
press the REF FREQ screen key at the
bottom left of the 'Present Settings' screen.
2. This transfers to a configuration screen
designed for changing the 'Ref Frequency'.
The default value is shown:
5ØkHz
Configuration
The
REFERENCE FREQUENCY
can be changed by using
direct editing only
Ref =
TODAY'S DATE TIME
5Ø.ØØ kHz
EXIT
3. Use Direct edit to set the required reference
frequency. After typing the value press the
↵ key on the keypad (the Direct edit 'V'
screen key in the right-hand column will
perform the same action).
4. The '50kHz DEFAULT' screen key on the
right can be used if 50kHz is required.
5. Press the EXIT screen key to return to the
'Present settings' menu screen. The new
reference frequency appears on the 'Present
Settings' list.
.
DEFAULT
3.4.3.3 'Safety voltage'
High Voltage Warnings — Warning and
Interlock
In the interests of safety, to avoid electric
shock, the 9500B incorporates a high-voltage
warning and interlock system for both DC and
Square Voltage functions. The limit can be set
to any voltage from 10V to 110V. The default
warning threshold value (100V) can be changed
in Configuration mode. The active threshold
value is stored in non-volatile memory.
When the output is on in DC/Square or High
Edge function, the warning will sound when
the output voltage setting is raised to or above
the threshold value. The output will stay at its
previous value until the user confirms the new
voltage by re-pressing the OUTPUT ON button.
1. For access to allow the high voltage
warning threshold to be altered, press the
VOLTAGE LIMIT screen key on the
'Present Settings' screen.
2. This transfers to a configuration screen
designed for changing the 'Voltage Limit'.
The default value is shown:
DEFAULT
Configuration
The high voltage warning limit
can be changed by using direct
editing only.
The maximum value is 11ØV
Limit =
TODAY'S DATE TIME
EXIT
3. Use Direct edit to set the required high
voltage warning limit. After typing the
value press the ↵ key on the keypad (the
Direct edit 'V' screen key in the right-hand
column will perform the same action).
4. The 'DEFAULT 100V' screen key on the
right can be used if 100V is the required
level.
1ØØ.ØØ V
100 V
5. Press the EXIT screen key to return to the
'Present settings' menu screen. The new
high voltage threshold value appears on
the 'Present Settings' list.
Note: Out-of-Range Indication
The valid range of limit values is from 10V to
110V. When values outside this range are
entered, an error message will appear on the
screen, and the 'EXIT' screen key label will be
replaced by 'OK'. By pressing 'OK' the original
value is reinstated and the message disappears,
for a second attempt.
3.4.3.4 'Bus address'
Remote Operation via the IEEE-488
interface — Addressing the 9500B
When the 9500B is set for remote operation,
control is removed from the front panel and
given to an external controller.
Communication is set up between the 9500B
and its controller via the IEEE-488 bus,
connected into an interface within the 9500B.
Commands from the controller are addressed
to the 9500B using an address code, which can
be a number in the range 0-30. For the 9500B
to respond, this number must be matched by
the same number programmed into the 9500B
using the procedure given below.
Remote operation of the 9500B via the IEEE488 interface is described in Section 6.
N.B. The correct bus address is necessary to
use remote commands, but remote
operation is available only when the
instrument is in MANUAL or
CALIBRATION mode.
1. The 9500B IEEE-488 bus address can be
set to any number within the range 0 to 30.
For access from the 'Present Settings'
screen, press the BUS ADDRESS screen
key at the top right.
2. The 9500B transfers to the 'IEEE 488
ADDRESSES' screen:
3-10 Section 3: Model 9500B Controls: Modes of Operation Descriptions assume 9500B/1100
Configuration
IEEE 488 ADDRESSES
9500B address=
2nd address inactive
Change by direct edit only.
TODAY'S DATE TIME
22
9500B
5ØØØ
SERIES
EXIT
3. Use numeric entry to set the required bus
address number. Type the number on the
keypad, then press the ↵ key.
4. Press EXIT to return to the 'Present Settings'
screen.
For second address (5000-series emulation),
refer to Section 6, Appendix F.
3.4.3.5 'Printer'
Printer Operation (Procedure Mode and
Test Mode only)
Using the Procedure mode print facility, the
9500B can deliver a printed certificate, whose
style is also determined in Configuration mode.
In Test mode, test results can also be printed —
in a pre-determined format. The results are
stored until the print command is given after
the test is over. The printer does not need to be
selected in Configuration mode, unless the
results print is required to conform to the
layout of a particular type of printer.
The printer is set up only when an attempt is
made to print, following two types of occasion:
a. printer type is changed in Config mode;
b. 9500B is powered on.
Printer Type Selection
1. For access to select and enable a particular
printer type (or one using the same
formatting), press the PRINTER screen
key on the 'Present Settings' screen.
2. This transfers to a 'Configuration' screen
to change 'The current printer type':
Configuration
The current printer type is
indicated by the highlight.
Use the softkeys to select
another.
TODAY'S DATE TIME
DISABLE
EPSON
BUBBLE
JET
DESK JET
USER
DEFINED
EXIT
3. Power-on default is DISABLE.
Use the screen keys to select the type of
printer on the interface, or to disable direct
printing.
4. EXIT returns to the 'Present Settings' menu
screen.
User Defined Printer Type
5. If the type of printer you are using does not
conform to one of those listed, press the
USER DEFINED screen key. This
transfers to a 'Configuration' screen
designed to enter the initialisation control
codes for your printer:
Configuration
Enter the initialisation
control codes in decimal
and confirm with enter.
The current control code string is
(string appears here
eg 27 116 1 18 15)
Enter a new control string
TODAY'S DATE TIME
EXIT
6. Obtain the initialisation control codes from
your printer's operating manual. If
necessary, convert the codes to decimal.
Use the 9500B keypad to type the decimal
codes, separated by spaces (→): the new
string replaces the old. Press the ↵ key.
6. EXIT returns to the 'current printer type'
screen.
:
:
3.4.3.6 'Power-up mode'
Mode Selection at Power-on
Users can determine which mode will be
selected automatically at power-on, choosing
between Procedure mode and Manual mode.
The 9500B cannot be made to power-up in any
other mode.
To set the power-up default mode use the
procedure in the column on the right.
1. For access to change the default mode,
press the POWER UP MODE screen key
on the 'Present Settings' screen.
2. This transfers to a 'Configuration' screen
to change 'The default power-on mode':
Configuration
The default power-on mode is
indicated by the highlight.
Use the softkeys to select
another.
TODAY'S DATE TIME
EXIT
3. To change the default, press the required
screen key on the right.
4. Press EXIT to return to the 'Present Settings'
screen
The new default will be incorporated into the
list. Next time the line power is turned from
OFF to ON, the 9500B will power-up in the
selected mode.
(continued overleaf)
PROC
MANUAL
Section 3: Model 9500B Controls: Modes of Operation 3-11Descriptions assume 9500B/1100
3.4.3.7 'NEW PASSWORD'
TODAY'S DATE TIME
Changing the Passwords
Two passwords are required (they can be the
same or different):
• for entry to Configuration mode;
• to enter Calibration mode (for calibration
of the 9500B itself).
Refer to para 3.4.2. When the 9500B is shipped
from new, the password requirement is enabled
to avoid unauthorized access (refer to para
3.4.2). The shipment Configuration and
Calibration passwords allow initial access to
the two modes, but should be changed as soon
as entry has been gained into Configuration
mode.
The passwords are changed using the following:
To change either the CALIB or CONFIG
password
1. On the 'Present Settings' menu screen,
press the NEW PASSWORD screen key
on the right. This transfers to the 'Select
the Password' screen:
2. Select the password to be changed, via one
Configuration
Select the password to be
changed using the softkeys.
TODAY'S DATE TIME
EXIT
CALIB
CONFIG
3.4.3.8 'CALIB' Password
To Change the Calibration Mode
Password
1. On the 'Select the password' screen, press
the CALIB screen key on the right. This
transfers to the 'Enter new calib password'
screen:
Configuration
Enter new calib password.
TODAY'S DATE TIME
EXIT
(To cancel an attempt, press the EXIT key.
This will revert to the 'Select the password'
screen.)
2. Type the new password using the alpha-
numeric keyboard, and finish with ↵. The
9500B will ask for the password to be
entered again, to confirm it.
3. Retype the same password; finish with ↵.
If the second password is different from
the first, the 9500B will reject both, and the
process must be repeated. If both passwords
are the same, the 9500B will accept the
new password, and revert to the 'Select the
password' screen.
Note: The shipment version of the
'Calibration' password is 2→3→5→7.
3.4.3.9 'CONFIG' Password
To Change the Configuration Mode
Password
1. On the 'Select the password' screen, press
the CONFIG screen key on the right. This
transfers to the 'Enter new config password'
screen:
Configuration
Enter new config password.
EXIT
(To cancel an attempt, press the EXIT key.
This will revert to the 'Select the password'
screen.)
2. Type the new password using the alpha-
numeric keyboard, and finish with ↵. The
9500B will ask for the password to be
entered again, to confirm it.
3. Retype the same password; finish with ↵.
If the second password is different from
the first, the 9500B will reject both, and the
process must be repeated. If both passwords
are the same, the 9500B will accept the
new password, and revert to the 'Select the
password' screen.
Note: The shipment version of the
'Configuration' password is 12321.
of the two screen keys on the right.
3. The EXIT screen key reverts to the Present
Settings' screen.
3-12 Section 3: Model 9500B Controls: Modes of Operation Descriptions assume 9500B/1100
3.4.3.10 'Ext ref in'
Reference Frequency Input
A BNC connector on the 9500B rear panel
accepts reference frequency inputs from 1MHz
to 20MHz in 1MHz steps, from a TTL source.
1. On the 'Present Settings' screen, press the
EXT REF IN screen key to transfer to the
'Change the reference source' screen
(default shown).
2. To change the reference source, press the
required screen key on the right:
Configuration
Change the reference source
by using the softkeys.
Int.
1Ø MHz
Ref =
TODAY'S DATE TIME
Reference
LOCKED
EXIT
3. When switched to 'EXT.', use the up/down
cursor control or spinwheel to inform the
9500B of the source frequency. Ensure
that the required source is connected and
operating.
Configuration
Change the reference source
by using the softkeys.
Change the external reference
setting by using the cursor
keys or whirly wheel.
Ext.
1Ø MHz
Ref =
TODAY'S DATE TIME
EXIT
4. Press EXIT to return to the 'Present
Settings' screen.
The new external reference frequency is
available to enhance the 9500B internal clock.
Reference
UNLOCKED
INT.
EXT.
INT.
EXT.
3.4.3.11 'Ext ref out'
Reference Frequency Output
A BNC connector on the 9500B rear panel
provides a reference frequency output at either
1MHz or 10MHz, from a 50Ω source (VSWR
< 1.2 to 100MHz). This can use the 9500B
internal clock to enhance the frequency
accuracy of other devices.
1. On the 'Present Settings' screen, press the
EXT REF OUT screen key to transfer to
the current external reference output' screen
(default shown):
Configuration
The current external
reference output is
indicated by the highlight.
Use the softkeys to select
another.
TODAY'S DATE TIME
DISABLE
1 MHZ
10 MHZ
EXIT
2. To change the external reference output,
press the required screen key on the right:
3. Press EXIT to return to the 'Present Settings'
screen.
The selected external reference frequency is
either disabled, or applied to the 'REF
FREQUENCY OUTPUT' BNC connector on
the rear panel.
3.4.3.12 'DATE TIME'
Date and Time Settings
A real-time clock, supported by an internal
battery, presents the date and time at the bottom
of many screens. It is also used to generate the
date to appear on direct-printing certificates in
Procedure mode. Users have access via
Configuration mode to correct the date and
time (for instance: to accommodate daylight
saving changes, and crossing time-zones).
Section 3: Model 9500B Controls: Modes of Operation 3-13Descriptions assume 9500B/1100
1. Press the DATE TIME screen key on the
'Present Settings' screen, for access to allow
the date and time to be altered.
2. This transfers to a configuration screen
designed for changing the date and time.
Our representation shows the current date
from a previous setting:
Configuration
The selected date format is
indicated by the highlight.
Change the date by using
direct editing only.
D-M-Y
M-D-Y
Y-M-D
TOGGLE
DELIM
Ø8/Ø7/2001
TODAY'S DATE TIME
EXIT
3. Press the appropriate right screen key to
set the required date format, and use the
keypad to correct the date, (using non-
alphanumeric characters as delimiters),
followed by ↵. The new date will appear
with delimiters as set by the 'TOGGLE
DELIM' key, which merely switches
between 'slash' (/) and 'period' (.) only.
5. To correct the time, press the CHANGE
TIME screen key to transfer to the 'Change
the time' screen, then use the alpha-numeric
keypad to enter the present time:
CHANGE
DATE
CHANGE
TIME
Configuration
Change the time by using
direct editing only.
13-21
TODAY'S DATE TIME
EXIT
6. Press the EXIT screen key to return to the
'Present settings' menu screen. The updated
corrected date and time, will appear
wherever they are used.
CHANGE
DATE
CHANGE
TIME
3.4.3.13 'HEAD CONFIG'
Information only
Pressing the 'HEAD CONFIG' key provides a
screen which indicates the type, serial no., cal
date and cal due date for each head fitted:
Configuration
Type S/N Cal Date Due Date
1 9510 XXXX XX/XX/XXXX XX/XX/XXXX
2 9510 XXXX XX/XX/XXXX XX/XX/XXXX
3 No Head ØØ/ØØ/ØØØØ ØØ/ØØ/ØØØØ
4 9510 UNDEFINED ØØ/ØØ/ØØØØ ØØ/ØØ/ØØØØ
5 No Head ØØ/ØØ/ØØØØ ØØ/ØØ/ØØØØ
TODAY'S DATE TIME
EXIT
Head calibration stores head details and
calibration corrections, specific to that head,
regardless of the base unit to which it is fitted.
The above screen presents the stored details
derived from the fitted heads.
3.4.3.14 'MORE' Configuration
After exiting to the 'Present Settings' screen,
pressing the 'MORE' key will provide entry to
a second 'Configuration' menu screen, showing
the present settings of other parameters
(generally associated with Procedure mode)
which can be changed using screen keys whose
new labels appear on the display:
SELECT
Configuration
Ser. No. XXXXXX Rev. XXX
Options : 1.1 GHz Normal xtal
Present Settings:
Language English
Border line 7Ø.ØØ
Results card Disabled
Engineers Notes Disabled
Certificate Style 1
TODAY'S DATE TIME
EXIT
The 'EXIT' screen key acts to escape, back to
the first Configuration menu screen.
If it desired to revert to the Mode Selection
display, press the front panel 'Mode' key.
LANG
BORDER
LINE
RESULTS
CARD
ENG
NOTES
CERT
DETAILS
CLEAR
USER
LIST
3.4.3.15 'Language'
Language Considerations
The 9500B default language is English. It is
possible to change the language used in
Procedure mode, but not in any of the other
modes.
For Procedure mode the language of the
introductory screens can be changed (these are
stored within the 9500B itself).
The language used in a procedure card is
determined and registered on the card, within
the procedure header, at the time that the
procedure is created (Portocal II can perform
this function). When the procedure card is
being used in the Model 9500B, the language
cannot be changed.
This facility allows users to alter the language
used in the introductory screens of Procedure
mode:
Configuration
The current language is
indicated by the highlight.
Use the softkeys to select
another.
TODAY'S DATE TIME
EXIT
1. On the 'Present Settings' screen, to transfer
to the 'Current language' screen, press the
SELECT LANG screen key:
2. To change the Procedure mode language,
press the required language screen key on
the right.
3. Press EXIT to return to the second 'Present
Settings' menu screen.
The new language will be used the next time
that Procedure mode is entered.
ENGLISH
FRENCH
GERMAN
SPANISH
ITALIAN
3.4.3.16 'Border line'
Test Point Specifications — 'Borderline'
Reporting
For users who wish to know when a UUT is
drifting towards the limits of (while still within)
the manufacturer's specification, it is useful to
provide some 'borderline' indication. This can
be expressed as a percentage of the
manufacturer's specification for each test point,
beyond which the indication will be given.
In the figure, the pass, borderline and fail
regions of the specification tolerance are
indicated at the test point.
Upper 100%
Spec Limit
Borderline
Percentage
Nominal Test
Point Value
Borderline
Percentage
Lower 100%
Spec Limit
UUT
Indicated
Value
When in Procedure mode, the direct-printing
certificate (Style 1), and the data on the 'Results'
card, will report 'Borderline' test results. Users
have access via Configuration mode to set the
percentage for borderline reporting.
1. For access to allow the borderline reporting
threshold to be altered, press the BORDER
LINE screen key on the 'Present Settings'
screen. This transfers to a configuration
screen designed for changing the threshold
(default value shown):
Actual UUT
Input Value
9500 Indicates 'Fail'
9500 Indicates 'Borderline'
9500 Indicates 'Pass'
Actual Test
Point Value
3-14 Section 3: Model 9500B Controls: Modes of Operation Descriptions assume 9500B/1100
Configuration
The percentage of UUT
specification tolerance
beyond which a
is reported can be adjusted
by using direct editing only.
Border line =
TODAY'S DATE TIME
EXIT
2. Use Direct edit to set the required
percentage of specification tolerance.
Results which lie between this percentage
and 100% of tolerance will be reported as
'Border line'.
3. Press the EXIT screen key to return to the
second 'Present settings' menu screen.
Subsequently, during each verification in
Procedure mode, the 9500B will detect its own
slewed output and place the UUT measurement
error into the 'Pass', 'Border line' or 'Fail'
category. When a (Style 1) certificate is printed,
and on any active results card, each test point
will indicate a 'Pass', 'Borderline' or 'Fail' result.
3.4.3.17 'Results card'
Formatting Results Memory Cards
(Procedure Mode only)
In Procedure mode, the 9500B can deliver the
results of a 'Calibrate' or 'Verify' procedure to
a memory card inserted into PCMCIA SLOT 2
in the front panel (refer to Section 5 of this
Handbook). Note that only SRAM cards can
be used in the PCMCIA SLOT 2 drive.
New SRAM cards must first be formatted for
the purpose. This can be carried out in Test
mode, as part of the 'Card Slot Test' procedure
(refer to Section 8), or within Portocal II
software.
"border line"
7Ø.ØØ
Caution!
During the formatting process, the Card Slot
Test over-writes all data stored on the card in
the slot, and sets up a new 'Results card header'.
Note:
It is not necessary to re-format a used card,
with results already stored, for it to accept new
data. New results data from Procedure mode
runs will be concatenated with existing data
until the card memory is full. Erasure of card
contents should be done using Portocal II.
1. For access to enable Procedure mode results
to be downloaded to a SRAM memory
card in the front panel PCMCIA SLOT 2,
press the RESULTS CARD screen key on
the 'Present Settings' screen.
2. The 'RESULTS CARD' screen key
transfers to 'The result card requirement'
menu screen.
The power-on default is DISABLE.
Configuration
DISABLE
ENABLE
The result card requirement is
indicated by the highlight.
Use the softkeys to select
another.
TODAY'S DATE TIME
EXIT
3. To enable or disable the facility, press the
required screen key on the right of the
screen. If enabled without a results card
inserted in PCMCIA SLOT 2, the selected
procedure will not run.
4. EXIT returns to the second 'Present
Settings' menu screen.
3.4.3.18 'Engineers Notes'
Engineer's Notes
When a certificate is being prepared in
Procedure mode, sometimes it will be desirable
to insert additional information about special
conditions, pertinent to the procedure which
was carried out.
For instance: if the procedure was performed
on a plug-in module of an oscilloscope, it may
be desired to add the serial number of the
oscilloscope mainframe, as well as the module's
serial number.
If, in CONFIG mode, the 'Engineers Notes' are
enabled, then an extra field will be added to the
certificate entitled 'Additional Notes' in which
any engineer's information can be entered. It
will appear between the 'Calibration Standard'
and 'Measurement Type' blocks.
The additional notes can be added on a screen
which will be shown in Procedure mode when
'Engineers Notes' are enabled.
To Enable Engineers Notes
1. On the second 'Present Settings' menu
screen, press the ENG NOTES screen key
on the right. This transfers to the 'Eng
notes requirement' screen:
Configuration
The eng notes requirement is
indicated by the highlight.
Use the softkeys to select
another.
TODAY'S DATE TIME
EXIT
2. Press the ENABLE screen key on the
right. The DISABLE key reverses the
process.
3. The EXIT screen key reverts to the second
'Present Settings' screen.
DISABLE
ENABLE
Section 3: Model 9500B Controls: Modes of Operation 3-15Descriptions assume 9500B/1100
3.4.3.19 'Certificate'
Results Certificates
In Procedure mode, three styles of printed
certificate are available:
Style 1
This provides full information about each point
tested, including applied and target values,
spec limits and UUT error, % error pass/fail
and test uncertainty ratio between 9500B and
UUT.
Style 2
This is a shorter form of certificate, showing
only the applied and target values, and the
9500B absolute uncertainty.
Style 3
This certificate is similar to Style 1, and has
been added to accommodate the wider spec
limits encountered during oscilloscope
calibration, expressed in percentages rather
than ppm.
Users are given the facility, in Configuration
mode, to change the style of certificate to be
printed.
1. For access to allow the certificate
formatting to be altered, press the CERT
DETAILS screen key on the second
'Present Settings' screen.
2. This transfers to what we shall refer to as
a 'CERT DETAILS' screen:
CERT
Configuration
Present Settings:
Certificate Style 1
Start page number 1
Page length 66
Pass indicator ON
Appended message
TODAY'S DATE TIME
EXIT
CERT DETAILS Screen Layout
STYLE
PAGE
SETUP
PASS
INDIC
APPEND
MESSAGE
LAB
DETAILS
3. The 'CERT DETAILS' screen allows users
to design a certificate by adjusting or
selecting characteristics via screen keys
on the right (refer to paras 3.4.3.20 to
3.4.3.28).
4. The EXIT screen key reverts to the second
'Present Settings' screen.
3.4.3.20 'CERT STYLE'
1. For access to select the certificate style,
press the CERT STYLE screen key on the
'CERT DETAILS' screen. This transfers
to 'The certificate type' screen, which allows
the style of certificate to be selected:
Configuration
STYLE 1
STYLE 2
The certificate type is
indicated by the highlight.
Use the softkeys to select
another.
TODAY'S DATE TIME
STYLE 3
EXIT
2. Press the key on the right which represents
the required style of certificate.
3. Press the EXIT screen key to revert to the
CERT DETAILS screen.
3.4.3.21 'PAGE SETUP'
1. To set up the certificate page, press the
PAGE SETUP screen key on the 'CERT
DETAILS' screen. This transfers to what
we shall refer to as a 'PAGE SETUP'
screen, which allows users to design the
certificate page, using the keys on the
right:
START
Configuration
Present Settings:
Start page number 1
Page length 66
Header size Ø
Footer size 1
TODAY'S DATE TIME
PAGE
PAGE
LENGTH
HEADER
SIZE
FOOTER
SIZE
EXIT
PAGE SETUP Screen Layout
2. Press the key on the right which describes
the attribute to be changed.
3. The EXIT screen key to revert to the
CERT DETAILS screen.
3.4.3.22 'Start page number'
1. To change the certificate start page number,
press the START PAGE screen key on the
'PAGE SETUP' screen. This transfers to
the 'Current start page' screen:
Configuration
The current start page is 1
Enter a new page
TODAY'S DATE TIME
EXIT
2. Use Direct edit to enter the new start page
number.
3. Press the ↵ screen key to confirm the new
page number and return to the 'PAGE
SETUP' menu screen. The new page
number will appear on the 'Present settings'
list.
4. The EXIT screen key reverts to the PAGE
SETUP screen without changing the start
page number.
:
3-16 Section 3: Model 9500B Controls: Modes of Operation Descriptions assume 9500B/1100
3.4.3.23 Page length, header and
footer sizes
'Page length', 'Header size' and 'Footer size' are
changed by similar operations as for the 'Start
page number' change. No further explanation
is necessary.
After all the page setup characteristics are
satisfactory, press EXIT on the 'PAGE SETUP'
screen to return to the 'CERT DETAILS' screen.
3.4.3.24 'Pass indicator'
On the 'CERT DETAILS' screen, the 'PASS
INDIC' soft key acts as a toggle to turn the pass
indicator facility off and on. There is no
transfer to another screen, The state of the pass
indicator on the 'CERT DETAILS' screen
merely toggles between off and on as the
facility is altered.
3.4.3.25 'Appended message'
Message required for the Certificate
For the printed results certificates, users may
wish to add a descriptive message.
1. To access the message screen, press the
APPEND MESSAGE screen key on the
'CERT DETAILS' screen. This transfers
to the 'Current appended message' screen:
2. Use Direct edit to enter the new message.
Configuration
The current appended message is:
(The current message
appears in this space)
Enter a new message
TODAY'S DATE TIME
EXIT
:
3. Press the ↵ screen key to return to the
'CERT DETAILS' screen. The message
appears on the 'Present settings' list.
4. The EXIT screen key reverts to the CERT
DETAILS screen without changing the
appended message.
3.4.3.26 'LAB DETAILS'
Laboratory Details required for the
Certificate
For the printed results certificates, it is required
to enter details of the laboratory at which the
results were obtained.
Users should enter the name, temperature and
relative humidity of their laboratory for the
printed certificates.
1. To set up the Laboratory details, press the
LAB DETAILS screen key on the 'CERT
DETAILS' screen.
This transfers to what we shall refer to as
a 'LAB DETAILS' screen:
2. The lab name, temperature and humidity
LAB
Configuration
Present Settings:
Lab name Fluke L...
Lab temp. 23°C ±5°C
Lab humid. 40% ±10%
TODAY'S DATE TIME
EXIT
LAB DETAILS Screen Layout
can be entered via the three screen keys on
the right.
3. The EXIT key reverts to the CERT
DETAILS screen.
NAME
LAB
TEMP
LAB
HUMID
3.4.3.27 'LAB NAME'
1. To enter the Laboratory name, press the
LAB NAME screen key on the 'LAB
DETAILS' screen. This transfers to the
'Current lab name' screen:
Configuration
The current lab name is:
Enter a new name
TODAY'S DATE TIME
EXIT
2. Use Direct edit to enter the new laboratory
3. Press the ↵ screen key to return to the 'LAB
4. The EXIT screen key reverts to the LAB
3.4.3.28 Laboratory Temperature
'Lab temp' and 'Lab humid' are changed by
similar operations as for the 'Lab name' change.
No further explanation is necessary.
After all the laboratory details are satisfactory,
press EXIT on the 'LAB DETAILS' screen to
return to the 'CERT DETAILS' screen.
(The current name
appears in this space)
:
name.
DETAILS' screen: The new lab name will
appear on the 'Present settings' list.
DETAILS screen without changing the
lab name.
and Humidity
Section 3: Model 9500B Controls: Modes of Operation 3-17Descriptions assume 9500B/1100
3.4.3.29 'CLEAR USER LIST'
Procedure Mode User List
A list of users is presented on the opening
menu screen of Procedure mode, where the
user's name can be selected to appear on the
certificate. New names can be added to the
screen at the same time.
Names cannot be removed from the list without
knowing the Config mode password, which
must be used to access the 'Clear user list'
facility.
1. For access to allow the Procedure mode
user list to be cleared, press the CLEAR
USER LIST screen key on the second
'Present Settings' screen. This transfers to
the confirmation screen:
Configuration
C F BARNES
F J BLOGGS
J K FLIPFLOP
Sec 3.4.3.30 *IDN? CONFIG
To retain compatibility with software
applications that depend upon instrument
response to the IEEE 488.2 common command
*IDN? it may be necessary to configure your
“Fluke 9500B” to respond as a previous model
“9500” from a previous manufacturer E.g.
“Wavetek”.
1. On the second “Present Settings” menu
screen, press the IDN screen key on the
bottom row of Softkeys. This transfers to
the “*IDN? Config” screen:
SELECT
Configuration
Ser. No. XXXXXX Rev. XXX
Options : 3.2 GHz Hi acc xtal
Present Settings:
Language English
Border line 7Ø.ØØ
Results card Disabled
Engineers Notes Disabled
Certificate Style 1
TODAY'S DATE TIME
EXIT
*IDN?
CONFIG
LANG
BORDER
LINE
RESULTS
CARD
ENG
NOTES
CERT
DETAILS
CLEAR
USER
LIST
Press OK to clear list
TODAY'S DATE TIME
EXIT
OK
3. OK removes all names from the list and
returns to the second 'Present Settings'
menu screen.
4. EXIT returns to the second 'Present
Settings' menu screen without removing
the names.
Configuration
The current *IDN? response is
indicated by the highlight.
Use the softkeys to select
another.
TODAY'S DATE TIME
EXIT
FLUKE
USE ALT
MANUF
9500B
9500
2. The EXIT screen key reverts to the second
“Present
3-18 Section 3: Model 9500B Controls: Modes of Operation Descriptions assume 9500B/1100
Section 4 Using the Model 9500B — Manual Mode
4.1 About Section 4
Section 4 is divided into the following sub-sections:
4.1 About Section 4
4.2 Interconnections
4.2.1 Introduction ................................................4.2-1
4.2.2 Active Head Technology ™ .........................4.2-1
4.2.3 AUX IN ........................................................4.2-2
4.2.4 REF FREQUENCY INPUT ...............................4.2-2
4.2.5 REF FREQUENCY OUTPUT ............................4.2-2
4.3 Manual Mode - Function Selection
4.3.1 Introduction ................................................4.3-1
4.3.2 Selection of Manual Mode ...........................4.3-1
4.3.3 Front Panel Function Keys ...........................4.3-1
4.4 Edit Facilities
4.4.1 Introduction ................................................4.4-1
4.4.2 Direct Mode ................................................4.4-1
4.4.3 Scope Mode ...............................................4.4-4
4.5 DC/Square Function
4.5.1 Introduction ................................................4.5-1
4.5.2 Default Settings ..........................................4.5-1
4.5.3 Menu Selections .........................................4.5-1
4.5.4 DC/Square Operation ..................................4.5-4
4.5.5 Square Operation ........................................ 4.5-4
4.5.6 Using the 9500B Square Function to Calibrate the
Amplitude Response of a UUT Oscilloscope...4.5-6
4.5.7 DC Operation .............................................. 4.5-8
4.5.8 Using the 9500B DC Function to Calibrate the
Amplitude Response of a UUT Oscilloscope...4.5-9
4.6 Sine Function
4.6.1 Introduction ................................................4.6-1
4.6.2 Default Settings ..........................................4.6-1
4.6.3 Menu Selections .........................................4.6-1
4.6.4 Sinewave Operation ....................................4.6-2
4.6.5 Dual Channel Operation ...............................4.6-4
4.6.6 Using the 9500B Levelled Sine Function
to Calibrate the Flatness/Bandwidth Response
of a UUT Oscilloscope ..................................4.6-5
4.7 Edge Function
4.7.1 Introduction ................................................4.7-1
4.7.2 Default Settings ..........................................4.7-1
4.7.3 Menu Selections .........................................4.7-1
4.7.4 Edge Function Operation .............................. 4.7-2
4.7.5 Using Active Head Models 9510/9520/9530 4.7-3
4.7.6 Using the 9500B Edge Function to Calibrate the
Pulse Response of a UUT Oscilloscope .........4.7-4
page page page
4.8 Time Markers Function
4.8.1 Introduction ................................................ 4.8-1
4.8.2 Default Settings .......................................... 4.8-1
4.8.3 Menu Selections .........................................4.8-1
4.8.4 Time Markers Operation .............................. 4.8-2
4.8.5 Using the 9500B Time Markers Function to
Calibrate the Time Base of a UUT
Oscilloscope ............................................... 4.8-4
4.9 Auxiliary Functions
4.9.1 Introduction ................................................ 4.9-1
4.9.2 Selection of Auxiliary Functions .................... 4.9-1
4.10 Current Function
4.10.1 Introduction .............................................. 4.10-1
4.10.2 Current Probe Accessory ...........................4.10-1
4.10.3 Default Settings ........................................ 4.10-1
4.10.4 Menu Selections ....................................... 4.10-2
4.10.5 Current Operation ..................................... 4.10-2
4.10.6 Square Operation ......................................4.10-3
4.10.7 Using the 9500B Current (Square) Function to
Calibrate the Pulse Response of a
UUT Oscilloscope Current Probe .................4.10-4
4.10.8 DCI Operation ........................................... 4.10-5
4.10.9 Using the 9500B DCI Function to Calibrate the
Amplitude Response of a
UUT Oscilloscope Current Probe .................4.10-6
4.11 Composite Video Function
4.11.1 Introduction .............................................. 4.11-1
4.11.2 Signals and Triggers..................................4.11-1
4.11.3 Default Settings ........................................ 4.11-1
4.11.4 Menu Selections ....................................... 4.11-1
4.11.5 Composite Video Function Operation ..........4.11-2
4.11.6 Using the Composite Video Function
to Calibrate Video Trigger Sensitivity
of a UUT Oscilloscope................................4.11-2
4.12 Linear Ramp Function
4.12.1 Introduction .............................................. 4.12-1
4.12.2 Default Settings ........................................ 4.12-1
4.12.3 Menu Selections ....................................... 4.12-1
4.12.4 Linear Ramp Operation ..............................4.12-1
4.12.5 Using the 9500B Linear Ramp Function for
Error Code Detection and
Trigger Level Marker Checks ..................... 4.12-2
4.13 Overload Pulse Function
4.13.1 Introduction .............................................. 4.13-1
4.13.2 Overload Protection Test............................4.13-1
4.13.3 Default Settings ........................................ 4.13-1
4.13.4 Menu Selections ....................................... 4.13-1
4.13.5 Overload Pulse Operation .......................... 4.13-1
4.13.6 Using the 9500B to Test the Overload Response
of a UUT Oscilloscope................................4.13-2
4.14 Zero Skew Function
4.14.1 Introduction .............................................. 4.14-1
4.14.2 Default Settings ........................................ 4.14-1
4.14.3 Menu Selections ....................................... 4.14-1
4.14.4 Zero Skew Operation ................................. 4.14-2
4.14.5 Measurement of UUT Oscilloscope
Channel Skew...........................................4.14-3
4.15 Auxiliary Input
4.15.1 Introduction .............................................. 4.15-1
4.15.2 Automated Routing....................................4.15-1
4.15.3 Default Settings ........................................ 4.15-1
4.15.4 Menu Selections ....................................... 4.15-1
4.15.5 Auxiliary Input Operation............................ 4.15-1
4.15.6 Using the 9500B for Automated Routing of
User-Specific Calibration Signals to
UUT Oscilloscope Input Channels ...............4.15-2
4.16 Load Resistance and Capacitance Measurement
4.16.1 Introduction .............................................. 4.16-1
4.16.2 Measurement Method ............................... 4.16-1
4.16.3 Default Settings ........................................ 4.16-1
4.16.4 Menu Selections ....................................... 4.16-1
4.16.5 Measurement Operation ............................ 4.16-1
4.16.6 Use the 9500B to Measure Load Resistance
or Load Capacitance .................................4.16-2
4.17 Input Leakage Function
4.17.1 Introduction .............................................. 4.17-1
4.17.2 Input Leakage Test ....................................4.17-1
4.17.3 Default Settings ........................................ 4.17-1
4.17.4 Menu Selections ....................................... 4.17-1
4.17.5 Input Leakage Operation............................4.17-1
4.17.6 Using the 9500B to Test the Input Leakage Current
of a UUT Oscilloscope................................4.17-2
4.18 Pulse Width Function
4.18.1 Introduction .............................................. 4.18-1
4.18.2 Trigger Qualification Timer Tests ................ 4.18-1
4.18.3 Default Settings ........................................ 4.18-1
4.18.4 Menu Selections ....................................... 4.18-1
4.18.5 Pulse Width Operations ............................. 4.18-1
Final Width = 215mm
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Contents 4.1-1
BLANK PAGE (LEFT-HAND)
This page deliberately left blank
This page deliberately left blank
4.2 Interconnections
4.2.1 Introduction
This sub-section deals with the Active Head
Technology™ used to connect the 9500B to a
UUT oscilloscope, and rear-panel signal inputs
and outputs. Section 4.2 is divided into the
following sub-sections:
4.2.1 Introduction 4.2-1
4.2.2 Active Head Technology ™ 4.2-1
4.2.2.1 Connections to the 9500B
and UUT Oscilloscope .................................... 4.2-1
4.2.2.2 Head Module Signal Processing .................... 4.2-1
4.2.3 AUX IN (Rear Panel) 4.2-2
4.2.4 REF FREQUENCY INPUT 4.2-2
4.2.5 REF FREQUENCY OUTPUT 4.2-2
4.2.6 Single and Multiple Channel Outputs 4.2-2
4.2.6.1 Single-Channel Variants ................................. 4.2-2
4.2.6.2 Option 5 ......................................................... 4.2-2
4.2.2 Active Head Technology
The main function of a head is to route the
9500B's output to the UUT oscilloscope input
channel without intervening cables that could
degrade the signal.
Each head contains output circuitry that
generates and supports the transmission of
pulses of very short rise and fall times with low
distortion, and amplitude variable from ±5mV
to ±3V, and good 50Ω matching. This is
achieved by the use of low-loss substrate
dielectrics, with wide-band components,
attenuators and relays. The heads also perform
the function of sinewave levelling.
Available head modules include:
• Model 9510 — 1.1GHz Output Module
with 500ps pulse edge capability.
• Model 9530 — 3.2GHz Output Module
with 150ps and 500ps pulse edge capability.
• Model 9550 — Output Module with 25ps
pulse edge capability only.
• Model 9560 — 6.4GHz Output Module
with 70ps pulse edge capability.
Electrical specifications apart, modules are
interchangeable. The 9500B accepts any mix
of types, up to five modules.
page
4.2.2.1 Connections to the 9500B
and UUT Oscilloscope
Two connections are used for each head. An
18-way connector and cable provides power
supplies, control and sense signals, whereas a
separate coaxial connector and cable carries
the signal or clock. The output signal is
delivered directly to the UUT oscilloscope's
input channel through the single BNC or
PC3.5 connection.
Caution:
The
symbol, shown on the 9500B front
!
panel and heads, draws attention to information
contained in this handbook regarding maximum
output voltages and currents.
For details, refer to Section 7: Specifications.
4.2.2.2 Head Signal Processing
Signal processing in the head modules can be
summarized by considering the 9500B
functions:
a.
DC/Square . The signal is routed
directly via switched attenuators to the
output BNC or PC3.5 socket. Sensing
from the output is passed back to the
mainframe, effectively providing a 4-wire
delivery.
b.
Sine. The sinewave at its final
frequency is passed through the input SMA
coaxial cable. Sinewave amplitude is set
in the mainframe, but sensing for sinewave
levelling takes place in the head itself,
returning the levelling control signal to the
mainframe. The levelled signal is routed
via attenuators to the output BNC or PC3.5
socket.
c.
Edge. Pulse levels and timing
originate in the mainframe and pass to the
head for control of the edge generating
circuitry. Pulses with 500ps edge are routed
via the LF/DC attenuators to the output
BNC or PC3.5 socket (Models 9510/9530).
Special attenuators in Model 9530/9560
are used for the 150ps or 70ps edge pulses.
d.
Markers. Marker types:
(
Square/Sine, Pulses or
Narrow Triangle waveform), timing
and levels originate in the mainframe and
pass directly via switched attenuators to
the output BNC or PC3.5 socket. Line
frequency markers are also included.
e. Aux.
i.
DC/Square Current Source.
Current outputs between 100µA and
100mA are derived from the DC/Square
voltage source via an external BNC current
loop accessory (50Ω load to 9500B
output).
The output calibrates current probes.
NB. Not compatible with 9550 or 9560.
ii.
Composite Video. Video voltage
outputs are passed directly via the output
BNC or PC3.5 to test TV sync separator
functions.
iii.
Linear Ramp. Symmetrical
triangular 1Vp-p waveforms of period
3ms to 3s are passed via the DC/Square
voltage route to the output BNC or PC3.5.
These calibrate trigger level markers and
check DSOs for missing ADC codes.
iv.
Overload Pulse. High energy
pulses between 5V and 20V of limited
duration are passed via the DC/Square
voltage route to the output BNC or PC3.5,
to test 50Ω terminator protection.
v.
Zero Skew. Permits 9500B
channels/heads transit times to be
harmonized, in order to test UUT input
channel trigger synchronization.
AUX IN
vi.
AUX IN. Routes external
calibration waveforms to an active head's
BNC or PC3.5 output.
vii.
Load Resistance. Measures load
resistance in the active head's output circuit.
viii. Load Capacitance. Measures load
capacitance in the active head's output circuit.
ix. UUT Input Leakage Tests. Short/
Open-circuit outputs directly to the output
BNC or PC3.5 allow testing of
oscilloscope input leakage current.
continued overleaf
Final Width = 215mm
→
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Interconnections 4.2-1
Final Width = 215mm
4.2.3 AUX IN (Rear Panel)
Despite the huge flexibility if the 9500B, it is
sometimes desirable to apply signals from
user's equipment to the inputs of a UUT
oscilloscope, for specific calibration or test
purposes.
With the 9500B Auxiliary Input selected,
wideband passive routing is available from a
rear-panel 50Ω SMA input through to the
selected 9500B channel output, using 9500B
front panel controls.
No trigger pickoff is provided, and internal
triggers are not available.
4.2.4 REF FREQUENCY INPUT
A BNC connector on the 9500B rear panel
accepts reference frequency inputs from 1MHz
to 20MHz in 1MHz steps, from a TTL source,
to enhance the 9500B internal clock.
4.2.5 REF FREQUENCY
OUTPUT
A BNC connector on the 9500B rear panel
provides a reference frequency output at either
1MHz or 10MHz, from a 50Ω source (VSWR
< 1.2 to 100MHz). This can use the 9500B
internal clock to enhance the frequency
accuracy of other devices.
4.2-2 Section 4: Using the Model 9500B — Interconnections
Descriptions assume 9500B/1100
4.3 Manual Mode — Function Selection
4.3.1 Introduction
This sub-section is a guide to selecting the
functions in Manual mode. The following
topics are covered:
4.3.1 Introduction .................................................... 4.3-1
4.3.2 Selection of Manual Mode.............................. 4.3-1
4.3.3 Front Panel Function Keys.............................. 4.3-1
4.3.3.1 'Function' Keys .............................. 4.3-1
4.3.3.2 Default Settings.............................. 4.3-1
4.3.3.3 'OSCILLOSCOPE CALIBRATOR' Panel Right Side Keys select Functions ... 4.3-1
4.3.2 Selection of Manual
Mode
Whenever the 9500B is in another mode,
Manual mode can be selected by pressing the
front panel Mode key, followed by the Manual
screen key at the left of the bottom row.
(N.B. The 9500B can be made to default to
either Manual or Procedure mode at powerup (refer to para 3.4.3.6: 'Power-up mode').
4.3.3 Front Panel Function
Keys
N.B. This description assumes that the
9500B is powered-up and that Manual mode
is active.
4.3.3.1 'Function' Keys
A function is accessed by pressing one of five
keys at the right of the 'OSCILLOSCOPE
CALIBRATOR' panel, as highlighted in Fig.
4.3.3.1.
4.3.3.2 Default Settings
When entering Manual mode, the system selects
DC/Square function. The system defaults to
show the DC/Square menu screen:
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
5.ØØ mV/div x4 = 2Ø.ØØØ mV
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
WAVE
FORM
Fig. 4.3.3.2 Manual Mode Power-Up
Screen — Multi-Channel
= ØØ.ØØ %
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
CHANNEL
SELECT
pk-pk
pk-pk
x 1Ø
÷ 1Ø
∆ = Ø
1
2
5
4.3.3.3 'OSCILLOSCOPE
CALIBRATOR' Panel —
Right Side Function Keys
This panel carries the main controls used to
select the operational functions and modes of
the calibrator:
Manual and Calibration Mode Function
keys are arranged down the right edge:
: DC/Square function. Select Square
with direction, or ±DCV using
screen keys. Select output channel,
amplitudes and frequency using
screen keys and cursor controls.
: Levelled Sinewave function.
Select output channel, amplitude
and frequency using screen keys
and cursor controls.
: Edge. Select polarity, amplitude
1.Ø
and frequency using screen keys.
: Timing Markers. Select
Waveform, Amplitude and
Frequency/Period, using screen
keys.
Aux : Auxiliary Functions. Select from
• Current,
• Composite Video,
• Linear Ramp,
• Overload Pulse,
• Zero Skew,
• Auxiliary Input,
• Load Resistance or Load
Capacitance measurement,
• UUT Input Leakage Test
using screen keys,
• Pulse Width.
Final Width = 215mm
Fig. 4.3.3.1 9500B Function Keys
Descriptions assume 9500B/1100
As soon as a right-side screen key is pressed
(other than
), the default menu screen will
disappear, to be replaced by the default screen
of the selected oscilloscope function.
For further details refer to subjects later in this
section.
Section 4: Using the Model 9500B — Function Selection 4.3-1
Final Width = 215mm
PAGE LEFT BLANK
4.3-2 Section 4: Using the Model 9500B — Function Selection
Descriptions assume 9500B/1100
4.4 Edit Facilities
4.4.1 Introduction
4.4.1.1 Subject Contents
Sub-section 4.4 is divided into the following
paragraphs:
4.4.1 Introduction .................................................... 4.4-1
4.4.1.1 Subject Contents ............................ 4.4-1
4.4.1.2 Methods of Adjustment .................. 4.4-1
4.4.1.3 Adjustment Modes ......................... 4.4-1
4.4.1.4 Use of the Tab Key ......................... 4.4-1
4.4.1.5 Scope Mode is the Default ............. 4.4-1
4.4.2 Direct Mode.................................................... 4.4-1
4.4.2.1 Introduction.................................... 4.4-1
4.4.2.2 Cursor Control ............................... 4.4-1
4.4.2.3 Direct Mode - Digit Edit ................. 4.4-2
4.4.2.4 Direct Mode - Numeric Entry ......... 4.4-2
4.4.2.5 Return to Scope Mode.................... 4.4-3
4.4.3 Scope Mode ................................................... 4.4-4
4.4.3.1 Introduction.................................... 4.4-4
4.4.3.2 Cursor Controls ............................. 4.4-4
4.4.3.3 Use of Sequence Scroll .................. 4.4-4
4.4.1.2 Methods of Adjustment
Before looking at displays for the functions,
we need to know how to alter the values
displayed on the screen. There are three main
methods used to change values:
• 'Digit Edit'; in which values can be scrolled
digit by digit, using a 'triangular' cursor
and associated controls.
• 'Sequence Scroll'; in which values can
only be changed by scrolling through a
sequence of values, using a 'barred' cursor
and associated controls. One of two
common sequences can be selected using
the 'Pref' facility.
• 'Numeric Entry Edit'; where a complete
new value is written in place of the existing
selected value, using the 'triangular' cursor
and the numeric keypad.
Page
4.4.1.3 Adjustment Modes
In addition to the three methods, there are two
modes, selected by the right-most soft key on
the bottom row beneath the screen, which
toggles between 'Scope' mode
'Direct' mode
1
2
1.Ø
. These are not major
5
1
2
1.Ø
and
5
modes of the same magnitude as Manual mode,
but identify specific means of making selections
or entering changes on the screen.
1. 'Scope Mode'; which relates to the way
that oscilloscopes are ranged in sequences.
Scope mode mainly uses Sequence Scroll,
but also includes limited use of Digit Edit
and Numeric Entry Edit. This is indicated
by the bottom right corner key label:
SIGNAL CH1 50Ω
OFF
TRIGGER NONE
5.ØØ mV/div x4 = 2Ø.ØØØ mV
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
Fig. 4.4.1 Typical Screen in Scope Mode
WAVE
FORM
= ØØ.ØØ %
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
CHANNEL
SELECT
pk-pk
pk-pk
1
5
x 1Ø
÷ 1Ø
∆ = Ø
1
2
5
2
1.Ø
1.Ø
2. 'Direct Mode'; which permits access to all
contributing parameters using only Digit
Edit and Numeric Entry Edit, indicated by
the bottom right corner key label:
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
Amplitude = 2Ø.ØØØ mV
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
Fig. 4.4.2 Typical Screen in Direct Mode
WAVE
FORM
= ØØ.ØØ %
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
CHANNEL
SELECT
pk-pk
pk-pk
1
2
5
∆ = Ø
∆% ∆V
1
2
1.Ø
5
1.Ø
4.4.1.4 Use of the Tab Key
In all editing, the Tab key
is used to select
the required variable for adjustment.
4.4.1.5 Scope Mode is the Default
Scope Mode is the default mode, which will
always be forced at power-on and when
changing modes. However, we shall discuss
Direct mode first because Sequence Scroll is
excluded.
In order to enter Direct mode, the bottom rightmost soft key must be toggled so that its label
changes to:
1
2
1.Ø
5
4.4.2 Direct Mode
4.4.2.1 Introduction
In Direct mode, once the
the required variable, the cursor can take only
one form: 'triangular'. A pair of triangles,
pointing at a single digit, indicate that the
digit's value can be scrolled continuously in
integer increments.
Note that the Units/division and multiplier
fields are not used, and the 'barred' cursor seen
on the default screen is missing.
4.4.2.2 Cursor Control
The cursor controls used in Direct mode are
shown highlighted in Fig. 4.4.3.
key has selected
continued overleaf
Final Width = 215mm
→
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Edit Facilities 4.4-1
Final Width = 215mm
4.4.2 Direct Mode (Contd.)
4.4.2.3 Direct Mode — Digit Edit
With the triangular cursor attached to a digit,
the
/
keys and the spinwheel are used to
increase or decrease the digit's value. The
and
the number to select the digit to be scrolled.
Except for Deviation, where the resolution
cannot be changed, movement of the cursor off
the end of the number will cause the resolution
to change to accommodate an extra digit, until
no further resolution change is possible.
The two shift keys
short cut to change the number's resolution.
Pressing either of the shift keys before a
or
key will effect the change, even if the
digit may not be at the end of the number. The
cursor will remain with its selected digit.
Note that after pressing a shift key, its image
appears and remains on the bottom right of the
screen until the
(for Deviation, the resolution cannot be
changed, so use of a shift key is ineffective.)
4.4.2.4
Introduction
Numeric Entry is not a default state. Digit Edit
will always be forced at power-on, and when
changing modes and functions.
Each method has its own advantages, which
will become apparent with experience of using
the front panel controls.
Numeric Entry facility employs the numeric
keypad to enter whole values, where this is
more convenient than operating on individual
digits in 'Digit Edit' facility.
Cursor Control
The tab
one parameter to another, but the
,
in setting the value.
keys move the cursor along
or can be used as a
or
key is pressed.
Direct Mode — Numeric Entry
key is used to pass the cursor from
,
keys and spinwheel play no part
Form of Cursor
Numeric Entry can be used to alter only those
parameter values which are accessed by the
triangular form of cursor. The cursor can sit
on any digit in the number, and Numeric Entry
will have the same effect.
Value Editing
The controls for Numeric Entry to alter the
value are the numeric keys of the alpha numeric
keypad, highlighted in Fig. 4.4.4.
Value Entry Box
Once a numeric key is pressed, an enclosed
area (box) will be provided on the screen,
below a reduced-size version of the value to be
changed. The box can be seen in Fig. 4.4.6.
Numeric Entry Action
Assume that the tab key has placed the cursor
on the Deviation value, in this case ØØ.ØØ%.
The cursor can be seen in Fig. 4.4.5.
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
CHANNEL
SELECT
pk-pk
pk-pk
Amplitude = 2Ø.ØØØ mV
Deviation
O/P
Amplitude
,
Frequency
TODAY'S DATE TIME
Fig. 4.4.5 Numeric Entry Starting Point
WAVE
FORM
= ØØ.ØØ %
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
∆ = Ø
∆% ∆V
1
2
1.Ø
5
By typing the number '10' (for +10%) on the
numeric keypad, the value entry box appears
on the display as shown in Fig. 4.4.6.
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
Amplitude = 2Ø.ØØØ mV
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
Fig. 4.4.6 Numeric Entry — Effect on
Deviation Value and Screen Key Labels
WAVE
FORM
ØØ.ØØ %
=
1Ø
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
CHANNEL
SELECT
pk-pk
pk-pk
%
1
2
1.Ø
5
The new value is implemented by pressing the
↵ (Enter) key on the keypad, or '%' at the top of
the right screen keys. The display then changes
to that shown in Fig. 4.4.7.
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
CHANNEL
SELECT
pk-pk
pk-pk
∆ = Ø
∆% ∆V
1
2
1.Ø
5
Amplitude = 2Ø.ØØØ mV
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
Fig. 4.4.7 Result of Pressing ↵ (Enter)
WAVE
FORM
= +1Ø.ØØ %
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
Note that the 9500B has assumed that the typed
characters '10' represent a deviation of +10.00%
in this context. For a deviation of -10.00%,
type the characters '-10' using the keypad
hyphen as a negative symbol.
Parameter Context
If the Deviation units had been changed to ∆V
(absolute voltage) instead of the relative ∆%,
then instead of Fig. 4.4.5, this would be
indicated as shown in Fig. 4.4.8
4.4-2 Section 4: Using the Model 9500B — Edit Facilities
Descriptions assume 9500B/1100
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
CHANNEL
SELECT
pk-pk
pk-pk
pk-pk
∆ = Ø
∆%
1
5
∆V
2
1.Ø
Amplitude = 2Ø.ØØØ mV
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
WAVE
FORM
= ØØ.ØØØ mV
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
Fig. 4.4.8 Deviation Selected as ∆V
In this case by typing the number '.002', the
9500B respects this change of units. The result
is shown in Fig. 4.4.9, also changing the
available unit labels on the right screen keys to
reflect the change.
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
Amplitude = 2Ø.ØØØ mV
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
WAVE
FORM
ØØ.ØØØ mV
=
.ØØ2
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
pk-pk
CHANNEL
SELECT
Fig. 4.4.9 Option to Choose Units for
Deviation Value
pk-pk
pk-pk
V
mV
µV
1
2
1.Ø
5
Note that if the new value is implemented by
pressing the ↵ (Enter) key on the keypad, then
(in this case) the units will be Volts. If the
number '2' had been typed followed by ↵, an
error message would have appeared, as 2V is
obviously outside the deviation range of ±10%
for the set value of 20mV. This could have
been avoided by typing '2', then pressing the
'mV' screen key to obtain the correct result
(Fig.4.4.10):
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
CHANNEL
SELECT
pk-pk
pk-pk
pk-pk
∆ = Ø
∆%
1
5
∆V
2
1.Ø
Amplitude = 2Ø.ØØØ mV
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
WAVE
FORM
=+Ø2.ØØØ mV
= 22.ØØØ mV
= 1.ØØØØ kHz
Fig. 4.4.10 Voltage Deviation Applied
The new deviation of +2mV is equivalent to
+10% of the set value, which can be seen by
pressing the right side key ∆%/∆V.
Numeric Entry Result
The 9500B will comply with the instructions
given in Numeric Entry, using the displayed
value to set the output deviation, in the same
way as for Digit Edit. This applies wherever it
is possible to use Numeric Entry.
4.4.2.5 Return to Scope Mode
The 9500B will always permit return from
Direct mode to Scope mode, even if the values
on the screen cannot be attained in Scope
mode. The values will default to extremes if
necessary. For example:
SIGNAL CH1 1MΩ
OFF
TRIGGER NONE
Amplitude = 222.4Ø V
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
Fig. 4.4.11 Direct Mode Starting Point
WAVE
FORM
= ØØ.ØØ %
= 222.4Ø V
= 1.ØØØØ kHz
CHANNEL
SELECT
pk-pk
pk-pk
x 1Ø
÷ 1Ø
∆ = Ø
1
2
5
1.Ø
In Fig. 4.4.11, the (maximum) O/P Amplitude
has been set using Direct mode (as shown). An
error message will result for any attempt to
increase the Amplitude value or any positive
Deviation percentage.
If the bottom right screen key (Editing Mode
key) is pressed to return to Scope mode, the
two contributors (Units/Div and Deviation)
will be adjusted to the achieve the same O/P
Amplitude, as shown in Fig 4.4.12:
SIGNAL CH1 1MΩ
OFF
TRIGGER NONE
5Ø.Ø V/div x4 = 2ØØ.ØØ V
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
Fig. 4.4.12 Transfer to Scope Mode
WAVE
FORM
= +11.2Ø %
= 222.4Ø V
= 1.ØØØØ kHz
CHANNEL
SELECT
pk-pk
pk-pk
x 1Ø
÷ 1Ø
∆ = Ø
1
2
5
1.Ø
For simplicity, the remainder of Manual mode
is described in this handbook in terms of Scope
mode, Digit Edit.
continued overleaf
Final Width = 215mm
→
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Edit Facilities 4.4-3
Final Width = 215mm
4.4.3 Scope Mode
4.4.3.1 Introduction
In Scope mode, once the
the required variable, the cursor can take one
of two forms: 'triangular' and 'barred'. The
triangular form operates in the same way as in
Direct mode, and permits editing using Numeric
Entry as well as Digit Edit.
Note that the Units/Division and Multiplier
fields are used in Scope mode, corresponding
to similar arrangements in UUT oscilloscopes.
4.4.3.2 Cursor Controls
Triangular Cursor
For the triangular cursor, the main controls
used to manipulate the cursor are the same as
for Direct mode, except that the two keypad
shift keys have no effect, as the only variable
which uses the triangular cursor is 'Deviation',
whose resolution is constant.
'Barred' Cursor
Two pairs of horizontal lines, enclosing a
value, indicate that for that value, neither Digit
Edit nor Numeric Entry is available. The value
can be adjusted only within a preferred step
sequence. Numeric Entry editing is not
available for numbers with a 'Barred' cursor:
5.ØØ mV/div x4 = 2Ø.ØØØ mV
With this form of cursor, the
keys are inactive. The
spinwheel increase or decrease the whole value,
using the preferred sequence for that parameter
(refer to Section 3, subsection 3.3). The controls
used for the barred cursor are highlighted in
Fig. 4.4.13:
key has selected
pk-pk
and
/
keys and the
Fig. 4.4.13 Barred Cursor Control Keys
4.4.3.3 Use of Sequence Scroll
Having already dealt with Digit Edit, Sequence
Scroll is easy to understand. The default DC/
Square screen of Fig. 4.4.1 is repeated in Fig
4.4.14 as an example:
SIGNAL CH1 50Ω
OFF
TRIGGER NONE
5.ØØ mV/div x4 = 2Ø.ØØØ mV
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
Fig. 4.4.14 DC/Square Default Screen
Using the Tab
= ØØ.ØØ %
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
WAVE
FORM
key to transfer through the
CHANNEL
SELECT
pk-pk
pk-pk
x 1Ø
÷ 1Ø
∆ = Ø
1
2
5
1.Ø
four available fields in turn, it can be seen that
the 'mV/div', the Multiplier and the Frequency
fields use barred cursors, with the Deviation
field using a triangular cursor.
Returning to the mV/div field, pressing the
key will increase the whole value to 10.0mV,
or pressing the
key will reduce the whole
value to 2.00mV (always assuming that the
sequence 1→2→5 has been selected in 'Pref'
facility). All other values with barred cursors
will also be incremented in the preferred
sequence.
4.4-4 Section 4: Using the Model 9500B — Edit Facilities
Descriptions assume 9500B/1100
4.5 DC/Square Function
4.5.1 Introduction
This sub-section is a guide to the use of the
9500B for generating square waves and DC
voltages for use for amplitude calibration of
oscilloscopes.
For those users who require more detailed
instructions for interconnections, and
manipulating the front panel controls, refer to
sub-sections 4.2, 4.3 and 4.4. Section 4.5 is
divided into the following sub-sections:
4.5.1 Introduction .................................................... 4.5-1
4.5.2 Default Settings .............................................. 4.5-1
4.5.3 Menu Selections............................................. 4.5-1
4.5.3.1 Signal Channels............................. 4.5-1
4.5.3.2 UUT Triggers.................................. 4.5-2
4.5.3.3 Trigger Channel Selection .............. 4.5-2
4.5.3.4 Cable Selection .............................. 4.5-2
4.5.3.5 Trigger Ratio .................................. 4.5-3
4.5.3.6 Retained Channel Memory ............. 4.5-3
4.5.3.7 Choosing a Waveshape .................. 4.5-3
4.5.3.8 DC Selection .................................. 4.5-3
4.5.3.9 DC/Square Selection Summary ...... 4.5-3
4.5.4 DC/Square Operation ..................................... 4.5-4
4.5.4.1 Right Side Screen Keys - Digit Edit/
Sequence Scroll............................. 4.5-4
4.5.4.2 Right Side Screen Keys -
Numeric Entry ................................ 4.5-4
4.5.4.3 Bottom Screen Keys - Digit Edit,
4.5.5 Square Operation............................................ 4.5-4
4.5.6 Using the 9500B Square Function to Calibrate the
4.5.7 DC Operation.................................................. 4.5-8
4.5.8 Using the 9500B DC Function to Calibrate the
Descriptions assume 9500B/1100
Sequence Scroll and Numeric Entry 4.5-4
4.5.5.1 Value Editing .................................. 4.5-4
4.5.5.2 Output Voltage Editing ................... 4.5-5
4.5.5.3 Low Voltage (LV) and
High Voltage (HV) States ............... 4.5-5
Amplitude Response of a UUT Oscilloscope... 4.5-6
4.5.6.1 Introduction.................................... 4.5-6
4.5.6.2 Interconnections............................. 4.5-6
4.5.6.3 UUT Scope - Amplitude Calibration
using the 9500B as a Fixed Source 4.5-6
4.5.6.4 UUT Scope - Amplitude Calibration
using the 9500B as an Adjustable
Source............................................ 4.5-7
4.5.7.1 Polarity........................................... 4.5-8
4.5.7.2 Value Editing .................................. 4.5-8
4.5.7.3 Output Voltage Editing ................... 4.5-8
4.5.7.4 Low Voltage (LV) and
High Voltage (HV) States ............... 4.5-8
4.5.7.5 Multi Channel DC Operation .......... 4.5-8
Amplitude Response of a UUT Oscilloscope... 4.5-9
4.5.8.1 Introduction.................................... 4.5-9
4.5.8.2 Interconnections............................. 4.5-9
4.5.8.3 UUT Scope — Amplitude Calibration
using the 9500B as a Fixed Source of
DC Voltage..................................... 4.5-9
4.5.8.4 UUT Scope — Amplitude Calibration
using the 9500B as an Adjustable
Source of DC Voltage................... 4.5-10
4.5.2 Default Settings
When Manual mode is selected the system
defaults into DC/Square function and shows
the DC/Square function initial menu screen.
Otherwise, the function is accessed by pressing
the
function key at the top right of the
'OSCILLOSCOPE CALIBRATOR' panel.
Whenever the DC/Square menu screen is
opened, except on recovery from a standby
period, it may appear with the following default
settings, although some settings may have
been made non-volatile (refer to para 4.5.3.6):
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
5.ØØ mV/div x4 = 2Ø.ØØØ mV
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
WAVE
FORM
= ØØ.ØØ %
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
CHANNEL
SELECT
pk-pk
pk-pk
x 1Ø
÷ 1Ø
∆ = Ø
1
2
5
1.Ø
The above default screen has auto-selected the
positive square waveform, as indicated by the
icon in the top left corner. Frequency is variable
between 10.000Hz and 100.00kHz. Frequency
has defaulted to 1kHz, deviation '∆' to zero,
and output voltage to 20.000mVp-p. The Duty
Cycle is fixed at a nominal 50%.
4.5.3 Menu Selections
4.5.3.1 Signal Channels
Each channel leads to specified pair of active
head connectors, and a head (if fitted). The
required channel can be selected on a second
menu screen. This is activated by pressing the
'CHANNEL SELECT' screen key on the bottom
row. The screen changes to show the available
channels (the presence of a head is detected
when fitted):
Section 4: Using the Model 9500B — DC/Square Function 4.5-1
pk-pk
SIGNAL
CH 1
SIGNAL
CH 2
SIGNAL
CH 3
SIGNAL
CH 4
SIGNAL
CH 5
LOAD
5ØΩ 1MΩ
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
CHANNEL 1>9530 1.1Ghz 150ps
CHANNEL 2>9530 1.1GHz 150ps
CHANNEL 3>9510 1.1GHz 500ps
CHANNEL 4>No Head
CHANNEL 5>No Head
O/P
Amplitude
Frequency
TODAY'S DATE TIME
EXIT
CHANNEL
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
TRIGGER
As can be seen from the screen, Model 9530
heads are fitted to channels 1 and 2, a Model
9510 head is fitted to channel 3, and no heads
are fitted to channels 4 and 5.
The highlight on channel 1 indicates that this
channel is selected for signal output, (confirmed
by the legend in the top central box). Pressing
any one of the right side soft keys selects that
channel for the signal output.
Expected load is confirmed as 50Ω (once
selected, the selection applies to all signal
channels). The right-most key on the bottom
row toggles between expected loads of 50Ω
and 1MΩ. The presence of '
TRIGGER NONE'
in the top central box indicates that no trigger
channel has been nominated.
Pressing the '
EXIT' key will revert back to the
standard DC/Square screen of para 4.5.2.
Note:
When a channel's head is finally connected to
the UUT oscilloscope, and the 9500B output is
turned on, the 9500B will measure the UUT
load. If the measured load is outside the
specification for the expected load, then an
error message will appear on the screen:
'Load Mismatch Detected UUT >150Ω'
for 50Ω selected;
'Load Mismatch Detected UUT <50kΩ'
for 1MΩ selected.
continued overleaf
Final Width = 215mm
→
Final Width = 215mm
4.5.3.2 UUT Triggers
The trigger can be routed via any head (except
9550), but a standard SMA to BNC coaxial
cable can be used instead, to save the cost of an
extra head. The reason for establishing five
channels is to permit use of four signal heads to
carry a full range of signals, plus an extra
channel to accommodate the trigger input, if
necessary. When a cable is fitted instead of a
head, it cannot carry the full range of signals.
Pressing the '
TRIGGER CHANNEL' soft key
provides a screen which permits a user to
assign a channel to trigger outputs:
As the screen shows, as yet no channel has
CABLE
SELECT
pk-pk
TRIGGER
CH 1
TRIGGER
CH 2
TRIGGER
CH 3
TRIGGER
CH 4
TRIGGER
CH 5
TRIGGER
NONE
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
CHANNEL 1>9530 1.1Ghz 150ps
CHANNEL 2>9530 1.1GHz 150ps
CHANNEL 3>9510 1.1GHz 500ps
CHANNEL 4>No Head
CHANNEL 5>No Head
O/P
Amplitude
Frequency
TODAY'S DATE TIME
EXIT
SIGNAL
CHANNEL
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
TRIGGER
RATIO
been allocated to triggers. This is confirmed
by the legend in the top central box and the
right side screen keys.
On the screen, the '
has changed to '
TRIGGER CHANNEL' label
SIGNAL CHANNEL', and
pressing this will revert to the previous screen
of para 4.5.3.1. so this key toggles between
the signal and trigger selection screens.
Pressing the 'EXIT' key will revert back to the
standard DC/Square screen of para 4.5.2.
Note that in the bottom right corner of the
screen, the expected load selection label has
disappeared, because as yet no trigger channel
has been selected. The label will be reinstated
if an active head is chosen to carry the trigger,
but if a cable is used a trigger load of 50Ω will
always be expected.
4.5.3.3 Trigger Channel Selection
Any of the channels can be selected for trigger,
so long as it is not already allocated as a signal
channel. In the screen of para 4.5.3.2, the top
central box shows Channel 1 as the signal
channel, and unavailable for trigger.
Attempting to use an occupied channel will
result in a 'bleep' and an error message.
If it is necessary to use an occupied channel for
triggers, its allocation as a signal channel must
be de-selected. Similarly, a channel already
occupied as a trigger channel cannot also be
used as a signal channel. The first use to be
allocated to a channel is dominant, and must be
first de-selected to change its use.
Pressing an unoccupied channel key will
highlight the key's label and change the legend
in the top central box. For instance, pressing
the '
TRIGGER CH 3' key has the following
effect:
CABLE
pk-pk
TRIGGER
CH 1
TRIGGER
CH 2
TRIGGER
CH 3
TRIGGER
CH 4
TRIGGER
CH 5
TRIGGER
NONE
LOAD
5ØΩ 1MΩ
SIGNAL CH1 5ØΩ
OFF
TRIGGER CH3 5ØΩ
CHANNEL 1>9530 1.1Ghz 150ps
CHANNEL 2>9530 1.1GHz 150ps
CHANNEL 3>9510 1.1GHz 500ps
CHANNEL 4>No Head
CHANNEL 5>No Head
O/P
Amplitude
Frequency
TODAY'S DATE TIME
EXIT
CHANNEL
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
SIGNAL
TRIGGER
RATIO
SELECT
The expected load value can be changed from
50Ω to 1MΩ using the bottom left corner
toggle key.
4.5.3.4 Cable Selection
If it is intended to use a cable instead of a full
head to convey the trigger, then a channel with
no head fitted must be selected. In this case, for
example, pressing the '
TRIGGER CH 5' key has
the following effect:
CABLE
pk-pk
TRIGGER
CH 1
TRIGGER
CH 2
TRIGGER
CH 3
TRIGGER
CH 4
TRIGGER
CH 5
TRIGGER
NONE
LOAD
5ØΩ 1MΩ
SIGNAL CH1 5ØΩ
OFF
TRIGGER CH5 5ØΩ
CHANNEL 1>9530 1.1Ghz 150ps
CHANNEL 2>9530 1.1GHz 150ps
CHANNEL 3>9510 1.1GHz 500ps
CHANNEL 4>No Head
CHANNEL 5>No Head
O/P
Amplitude
Frequency
TODAY'S DATE TIME
EXIT
CHANNEL
SIGNAL
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
TRIGGER
RATIO
SELECT
This channel must be allocated as a 'cable'
channel; accessed by pressing the '
SELECT' key. A new screen is presented:
SIGNAL CH1 5ØΩ
OFF
TRIGGER CH5 5ØΩ
CHANNEL 1>9530 1.1Ghz 150ps
CHANNEL 2>9530 1.1GHz 150ps
CHANNEL 3>9510 1.1GHz 500ps
CHANNEL 4>No Head
CHANNEL 5>No Head
O/P
Amplitude
Frequency
TODAY'S DATE TIME
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
pk-pk
CABLE
CABLE
CH 1
CABLE
CH 2
CABLE
CH 3
CABLE
CH 4
CABLE
CH 5
EXIT
Pressing the '
CABLE CH 5' key has the
following effect:
pk-pk
CABLE
CH 1
CABLE
CH 2
CABLE
CH 3
CABLE
CH 4
CABLE
CH 5
SIGNAL CH1 5ØΩ
OFF
TRIGGER CH5 5ØΩ
CHANNEL 1>9530 1.1Ghz 150ps
CHANNEL 2>9530 1.1GHz 150ps
CHANNEL 3>9510 1.1GHz 500ps
CHANNEL 4>No Head
CHANNEL 5>Trigger Cable
O/P
Amplitude
Frequency
TODAY'S DATE TIME
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
EXIT
Having made the selection, pressing '
EXIT'
returns to the trigger selection screen:
4.5-2 Section 4: Using the Model 9500B — DC/Square Function
Descriptions assume 9500B/1100
CABLE
pk-pk
TRIGGER
CH 1
TRIGGER
CH 2
TRIGGER
CH 3
TRIGGER
CH 4
TRIGGER
CH 5
TRIGGER
NONE
SIGNAL CH1 5ØΩ
OFF
TRIGGER CH5 5ØΩ
CHANNEL 1>9530 1.1Ghz 150ps
CHANNEL 2>9530 1.1GHz 150ps
CHANNEL 3>9510 1.1GHz 500ps
CHANNEL 4>No Head
CHANNEL 5>Trigger Cable
O/P
Amplitude
Frequency
TODAY'S DATE TIME
EXIT
CHANNEL
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
SIGNAL
TRIGGER
RATIO
SELECT
Note that the expected load key in the bottom
right corner is now de-activated, and the trigger
state legend in the top central box is fixed on
50Ω. A further selection is available, to choose
the trigger ratio.
4.5.3.5 Trigger Ratio
The 'Trigger Ratio' is the ratio of the trigger
frequency to the that of the waveform itself.
Three ratios are available: '÷1', '÷10' and '÷100'.
Pressing the 'TRIGGER RATIO' key presents
the following screen:
SIGNAL CH1 5ØΩ
OFF
TRIGGER CH5 5ØΩ
CHANNEL 1>9530 1.1Ghz 150ps
CHANNEL 2>9530 1.1GHz 150ps
CHANNEL 3>9510 1.1GHz 500ps
CHANNEL 4>No Head
CHANNEL 5>Trigger Cable
O/P
Amplitude
Frequency
TODAY'S DATE TIME
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
÷ 1
÷ 1Ø
÷ 1ØØ
pk-pk
EXIT
Pressing first the required ratio, then 'EXIT'
returns to the trigger selection screen. On this
screen, no indication of the trigger ratio is
given.
Note: Beware that a low frequency sub-
divided in this way could lead to a very
long delay before a trigger occurs.
4.5.3.6 Retained Channel Memory
All selections made for Signal Channel, Trigger
Channel, Cable Select and Trigger Ratio are
retained in non-volatile memory within the
9500B. Changing modes and functions; and
powering the instrument on and off will not
alter these selections.
For this reason, there are no true defaults for
these parameters, although on receipt from
manufacture you should find the following
selections are already made:
Signal Channel:
1
Trigger Channel: NONE
Cable Select: Not selected
Trigger Ratio: ÷1
4.5.3.7 Choosing a Waveshape
All waveshapes in this function can be selected
on a second menu screen. This is activated by
pressing the '
WAVEFORM' screen key on the
bottom row. The screen changes to show the
available waveforms:
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
CHANNEL
SELECT
pk-pk
pk-pk
1
2
1.Ø
5
5.ØØ mV/div x4 = 2Ø.ØØØ mV
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
WAVE
FORM
= ØØ.ØØ %
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
The WAVEFORM key label is highlighted to
indicate that waveform selection is available,
as is the presently-selected waveform icon.
Pressing one of the waveform keys (for
example: the
key) to select a different
waveform will return to the previous screen,
with the icon of the selected waveform showing
in the top left corner:
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
5.ØØ mV/div x4 = 2Ø.ØØØ mV
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
WAVE
FORM
= ØØ.ØØ %
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
CHANNEL
SELECT
pk-pk
pk-pk
x 1Ø
÷ 1Ø
∆ = Ø
1
2
5
1.Ø
4.5.3.8 DC Selection
Pressing one of the two DC keys, for example:
the
(DC Negative) key, will return to the
previous screen, with the DC Negative icon
showing in the top left corner. The parameters
listed on the screen will be changed to reflect
DC instead of Square:
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
5.ØØ mV/div x4 = 2Ø.ØØØ mV
Deviation
O/P
Amplitude
TODAY'S DATE TIME
WAVE
FORM
= ØØ.ØØ %
= -2Ø.ØØØ mV
CHANNEL
SELECT
x 1Ø
÷ 1Ø
∆ = Ø
1
2
5
1.Ø
4.5.3.9 DC/Square Selection
Summary
'DC' and 'Square' can be regarded as a combined
dual function, as each has a similar purpose,
and switching between the two is accomplished
by selection in a common 'Waveform' menu.
The parametric differences are evident once
the appropriate waveform soft key has been
pressed.
Detailed operation follows below:
paras 4.5.4 (DC/Square Operation)
paras 4.5.5/6 (Square Operation)
paras 4.5.7/8 (DC Operation).
Final Width = 215mm
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — DC/Square Function 4.5-3
Final Width = 215mm
4.5.4 DC/Square Operation
4.5.4.1 Right Side Screen Keys —
Digit Edit / Sequence Scroll
Keys operate on the value marked by the
cursor. The key labels will change depending
on the cursor position, as indicated.:
i. Cursor on Units/div:
X10 Multiplies the Units/div by ten.
÷10 Divides the Units/div by ten.
∆ = Ø Toggles the Deviation value
between the marked value and zero.
Toggles the value between positive
and negative (DC only).
ii. Cursor on Multiplier:
∆ = Ø Toggles the Deviation value
between the marked value and zero.
Toggles the value between positive
and negative (DC only).
iii. Cursor on Deviation:
∆ = Ø Toggles the Deviation value
between the marked value and zero.
∆% ∆V
∆% ∆V
iv. Cursor on Frequency/Period:
X10 Multiplies the marked value by ten.
÷ 10 Divides the marked value by ten.
∆ = Ø Toggles the Deviation value
Press to set Deviation value in
absolute units.
Press to set Deviation value in
percent of set value.
between the marked value and zero.
Press to change display from
1
Frequency to Period (not DC).
Press to change display from Period
1
to Frequency (not DC).
4.5.4.2 Right Side Screen
Keys — Numeric Entry
Right side screen keys operate on the
value in the edit box, and acting in place
of the ↵ key, exit from Numeric Entry
back to Digit Edit/Sequence Scroll; then
set the value as evaluated in the box:
Cursor on Deviation:
% Evaluates the number in the
box in Deviation
Percentage.
V Evaluates the number in the
box in Volts.
mV Evaluates the number in the
box in Millivolts.
µV Evaluates the number in the
box in Microvolts.
4.5.4.3 Bottom Screen Keys —
Digit Edit, Sequence Scroll
and Numeric Entry
WAVE Provides a second menu screen
FORM for selection between three Square
waveshapes or ±DC.
(paras 4.5.3.7-9).
With output on, the output to the
UUT is grounded, for any waveform
or DC selection.
CHANNEL Permits the screen signal setup to
SELECT be routed to any of the five heads,
allowing selection of trigger
channel, trigger ratio and cable
channel (paras 4.5.3).
1
5
1
2
5
Press to select Direct Mode (paras
2
1.Ø
4.4.3/4).
Press to select Scope Mode (setting
1.Ø
the step sequence to '1, 2, 5' or
'1, 2, 2.5, 4, 5' as chosen using the
Preferences key) (paras 4.4.1/2).
4.5.5 Square Operation
4.5.5.1 Value Editing
Amplitude
At maximum and minimum output voltages, the screen settings of the contributors' values
(units/division, scaling multiplier and deviation) are limited by the output voltage itself. For
example:
Contributor Ω
Minimum Maximum Minimum Maximum
Output Voltage 35.52µV p-p 222.4V p-p 35.52µV p-p 5.56V p-p
Limit
Units/Division 10µV/div 50V/div 10µV/div 2V/div
Scaling Multiplier 1 10 1 10
Deviation -11.20% +11.20% -11.20% +11.20%
Provided they do not exceed the output voltage limits shown, the contributors have the following
adjustments (Scope mode):
= 1MΩ Ω
LOAD
LOAD
= 50Ω
4.5-4 Section 4: Using the Model 9500B — DC/Square Function
Descriptions assume 9500B/1100
a. Units/Division in Volts/division
(adjustable sequence: 1-2-5 or 1-2-2.5-45; default 5mV).
b. Scaling Multiplier (adjustable through
integers 1 to 10; default 4).
c. Percentage Deviation (a maximum range
of ±11.20% about the value of (
a) x (b), at
a resolution of four significant digits, with
two decimal places; default zero). Digit
Edit or Numeric Entry can be used.
d. Output Voltage (adjustable only by
manipulation of (
a), (b) and (c); default
20.000mV).
4.5.5.2 Output Voltage Editing
The editing processes follow the same general
rules as for editing voltages described in paras
4.4.
Tab
Key and Cursors (Scope Mode)
Repeatedly pressing this key moves the cursor
from the default units/division to the Multiplier,
then to the Deviation and back to the units/
division. The type of cursor at each position
indicates the type of adjustment possible.
Units/Division (Scope Mode)
The type of cursor (barred) used for the units/
division signifies that the value can be adjusted
only as a step-sequence value using the
keys. The
and
and
keys are
inactive.
From the default '5mV/div', the value can be
raised using the
key by increments through
10mV/div, 20mV/div, 50mV/div and so on up
to 50V/div, providing that the other contributors
will not take the output voltage value above
5.56V p-p (50Ω load) or 222.40V p-p (1MΩ
load). Similarly, the
key will reduce the
Units/Division down to 10µV/div, unless the
output voltage would fall below 35.52µV p-p
(both 50Ω and 1MΩ loads).
Multiplier (Scope Mode)
Again the
and
keys are inactive.
From the default 'x 4', the value can be changed
using the
and
keys, by single integer
increments to values between 1 and 10,
providing that the other contributors do not
take the output voltage value out of its limits.
The product of the units/division and multiplier
are shown on the right side of the '=' sign.
Deviation (Scope and Direct Mode)
The triangular type of cursor indicates that all
the cursor keys can be used.
From the default 00.00%, the deviation
percentage can be changed to any value within
its resolution between -11.20% and +11.20%,
providing that the other contributors do not
take the output voltage value out of its limits.
The result of combining the units/division,
multiplier and deviation are shown as the value
of 'O/P Volts p-p'.
Output Voltage (Scope and Direct Mode)
The O/P Amplitude is only adjustable by means
of its contributors.
From the default 20.000mV p-p, the output
voltage can be changed to any value within its
resolution between 35.52µV p-p (both 50Ω
and 1MΩ loads) and 5.56V p-p (50Ω load) or
222.40V p-p (1MΩ load).
Frequency (Scope and Direct Mode)
From the default 1kHz, the output frequency
can be changed to any value within its resolution
between 10Hz and 100kHz.
4.5.5.3 Low Voltage (LV) and
High Voltage (HV) States
In the interests of safety, to avoid electric
shock, the 9500B incorporates a high-voltage
interlock system for DC/Square and High Edge
functions. The interlock threshold voltage can
be chosen by the user between 10V and 110V,
otherwise a default threshold value of 100V is
set. The active threshold value is stored in nonvolatile memory.
Any voltage below the threshold can be output
without hindrance, but voltages on or above
the threshold cannot be output without
deliberate action being taken to enter the high
voltage (HV) state. Once entered, a continuous
audible signal acts as a reminder that HV state
is active.
The system exits from HV state when the
output voltage is brought down below HV
state's lower limit. This is always 10% less
than the active threshold value, allowing some
adjustment of output without the irritation of
having to change states.
Each threshold value is related to the output
value set on the screen, including Deviation.
The default state boundaries are shown in Fig.
4.5.1. The values given in the figure translate
to DC volts in DCV function, and pk-pk volts
in Square and High Edge functions.
100V90V
Low Voltage State →
←
High Voltage State
Fig. 4.5.1 Default Settings of
Low and High Voltage States
continued overleaf
Final Width = 215mm
→
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — DC/Square Function 4.5-5
Final Width = 215mm
4.5.5 Square Operation
4.5.5.3 Low Voltage (LV) and High
Voltage (HV) States
Increasing Output Voltage into High
Voltage State
When increasing output value using any
method; if the new value will be at or greater
than the upper threshold and OUTPUT is OFF,
HV state will be activated but no effect will be
observed. If OUTPUT is ON, it will remain
ON at its latest value. The operator will be
prompted, by audible warning, and error
message: 'Confirm with ON', that HV State is
required. This is done by pressing the OUTPUT
ON key again; then, after a short delay, the
output voltage will be raised to the new voltage
in HV state.
While OUTPUT is ON in HV state, a
distinctive, pulsing tone is emitted. Once in
HV state, OUTPUT can be turned ON and
OFF with no need to confirm.
Decreasing Output Voltage out of High
Voltage State
When decreasing output value using any
method; if the new value will be less than the
lower limit of HV State, then the LV state will
be activated. No warning will be given, except
that the pulsing tone will cease. This rule
applies whether OUTPUT is OFF or ON.
Applicability to Square Function
In Square Function, the output voltage can
only rise above the minimum threshold setting
of 10V, when the expected load setting is
1MΩ. High Voltage State cannot be entered
when the expected load setting is 50Ω.
(Contd.)
(Contd.)
4.5.6 Using the 9500B Square Function to Calibrate the Amplitude
Response of a UUT Oscilloscope
4.5.6.1 Introduction
Two types of procedures for amplitude
calibration are given:
a. Using the 9500B as a fixed source, where
the oscilloscope can be adjusted;
b. Using the 9500B as an adjustable source,
reading oscilloscope deviations via the
9500B screen.
4.5.6.2 Interconnections
a. Use the appropriate active head to connect
from the required 9500B channel output to
the input of the UUT Signal Channel to be
calibrated.
b. If a trigger is required, use an active head
(or trigger cable) to connect from the
required 9500B channel output to the input
of the UUT Trigger for the Channel to be
calibrated.
4.5.6.3 UUT Scope — Amplitude
Calibration using the 9500B
as a Fixed Source
The following procedure assumes that the
9500B instrument is in Manual Mode. It is also
assumed that the user will be familiar with the
methods of editing screen values. In the case
of difficulty, re-read the paragraphs earlier in
this Section 4.
9500B and UUT Oscilloscope Setup
1. Preparation
Ensure that both instruments are powered ON
and warmed up.
2. UUT 'Scope
Select the required function for amplitude
calibration.
3. 9500B
Ensure that the 9500B is in Square Function
with Output OFF. If in any other function,
press the
screen.
soft key at the top right of the
Sequence of Operations
Refer to the table or list of UUT Oscilloscope
amplitude calibration points in the UUT
Oscilloscope Manufacturer's Calibration
Guide.
Follow the sequence of calibration stages as
directed by the guide, and carry out the
following operations (1) to (6) at each stage.
1. 9500B
Use the front panel controls to set the 9500B
Output to the required square wave p-p voltage,
polarity, frequency and load impedance for the
UUT 'Scope amplitude cal point:
2. UUT 'Scope
a. Select the correct channel for the cal point.
b. Select the correct range for the cal point.
3. 9500B Set Output ON.
4. UUT 'Scope
a. Adjust the sweep speed and trigger level
for a stable display.
b. Observe and note the amplitude response.
5. Calibration
a. If a calibration adjustment is provided,
adjust the UUT's response to be appropriate
to the settings on the 9500B screen, as
detailed in the UUT Oscilloscope
Manufacturer's Calibration Guide.
b. If no adjustment is provided on the UUT
'Scope, record its response at the calibration
point as detailed in the UUT Oscilloscope
Manufacturer's Calibration Guide.
6. 9500B Set Output OFF.
4.5-6 Section 4: Using the Model 9500B — DC/Square Function
Descriptions assume 9500B/1100
4.5.6.4 UUT Oscilloscope —
Amplitude Calibration using
the 9500B as an Adjustable
Source
The following procedure assumes that the
9500B instrument is in Manual Mode. It is also
assumed that the user will be familiar with the
methods of editing screen values. In the case
of difficulty, re-read the paragraphs earlier in
this Section 4.
9500B and UUT Oscilloscope Setup
1. Preparation
Ensure that both instruments are powered ON
and warmed up.
2. UUT 'Scope
Select the required function for amplitude
calibration.
3. 9500B
Ensure that the 9500B is in Square Function
with Output OFF. If in any other function,
press the
screen.
soft key at the top right of the
Sequence of Operations
Refer to the table or list of UUT Oscilloscope
amplitude calibration points in the UUT
Oscilloscope Manufacturer's Calibration
Guide.
Follow the sequence of calibration stages as
directed by the guide, and carry out the
following operations (1) to (6) at each stage.
1. 9500B
Use the front panel controls to set the 9500B
Output to the required square wave p-p voltage,
polarity, frequency and load impedance for the
UUT 'Scope amplitude cal point:
2. UUT 'Scope
a. Select the correct channel for the cal point.
b. Select the correct range for the cal point.
3. 9500B Set Output ON.
4. UUT 'Scope
a. Adjust the sweep speed and trigger level
for a stable display.
b. Observe and note the amplitude response.
5. Calibration
a. Use the 9500B Deviation control to slew
the 9500B Output voltage until the UUT's
response is appropriate to the 9500B
settings, as detailed in the UUT
Oscilloscope Manufacturer's Calibration
Guide.
b. Record the 9500B screen output voltage as
detailed in the UUT Oscilloscope
Manufacturer's Calibration Guide.
6. 9500B Set Output OFF.
Final Width = 215mm
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — DC/Square Function 4.5-7
Final Width = 215mm
4.5.7 DC Operation
4.5.7.1 Polarity
Waveform Selection Screen
From the power-on default, pressing the
WAVEFORM screen key transfers to the
waveform menu screen:
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
CHANNEL
SELECT
pk-pk
pk-pk
1
2
1.Ø
5
5.ØØ mV/div x4 = 2Ø.ØØØ mV
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
Both polarities of DC Voltage output are listed
merely as different waveforms. As an example,
pressing the
above will present the DC function screen,
showing negative values selected (of course,
the frequency parameter has disappeared from
the screen):
= ØØ.ØØ %
= 2Ø.ØØØ mV
= 1.ØØØØ kHz
WAVE
FORM
key from the setup shown
4.5.7.2 Value Editing
Amplitude
At maximum and minimum output voltages, the screen settings of the contributors' values
(units/division, scaling multiplier and deviation) are limited by the output voltage itself. For
example:
Contributor Ω
Minimum Maximum Minimum Maximum
Output Voltage ±888.00µVDC ±222.4V p-p ±888.00µVDC ±5.56V
Limit
Units/Division 0.20mV/div 50V/div 0.20mV/div 2V/div
Scaling Multiplier 1 10 1 10
Deviation -11.20% +11.20% -11.20% +11.20%
= 1MΩ Ω
LOAD
LOAD
= 50Ω
Provided they do not exceed the output voltage limits shown, the contributors have the following
adjustments (Scope mode):
a. Units/Division in Volts/division (adjustable sequence: 1-2-5 or 1-2-2.5-4-5; default 5mV).
b. Scaling Multiplier (adjustable through integers 1 to 10; default 4).
c. Percentage Deviation (a maximum range of ±11.20% about the value of (a) x (b), at a
resolution of four significant digits, with two decimal places; default zero). Digit or Numeric
Entry can be used.
d. Output Voltage (adjustable in Digit Edit/Sequence Scroll only, by manipulation of (a), (b)
and (
c); default 20.000mV).
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
5.ØØ mV/div x4 = 2Ø.ØØØ mV
O/P
Deviation
Amplitude
= ØØ.ØØ %
= -2Ø.ØØØ mV
x 1Ø
÷ 1Ø
∆ = Ø
4.5.7.3 Output Voltage Editing
The editing processes follow the same rules as
for editing square waves (refer to para 4.5.5.2).
Obviously no frequency adjustment is present,
and polarity is changed as described in para
4.5.7.4 Low Voltage (LV) and
TODAY'S DATE TIME
WAVE
FORM
CHANNEL
SELECT
1
2
1.Ø
5
Entering and leaving High Voltage state in DC
High Voltage (HV) States
Function is governed by the same rules as for
Once into DC function, it is not necessary to
change the waveform to change polarity.
Pressing the
+/- screen key toggles between
positive and negative DC Voltage. The polarity
selection is shown by the function icon in the
top left corner, confirmed by the
+ or - sign on
the O/P Amplitude value.
Square function (refer to para 4.5.5.3). In this
case the threshold-setting limits are ±10VDC
and ±110VDC, not pk-pk.
4.5.7.5 Multi Channel DC Operation
The 9500B is capable of simultaneous DC
Output from all channels that have a 9510,
9520, 9530 or 9560 Active Head fitted.
4.5-8 Section 4: Using the Model 9500B — DC/Square Function
Primarily to accelerate the Calibration of
voltage linearity under automated remote
control, the feature is also available to manual
operators via the 9500B front panel controls
and display.
CH1 , 2, 4 1mΩ
OFF
TRIGGER NONE
CHANNEL 1>9560 6.4Ghz 70ps
CHANNEL 2>9560 6.4Ghz 70ps
CHANNEL 3>9560 6.4Ghz 70ps
CHANNEL 4>9560 6.4Ghz 70ps
CHANNEL 5>Trigger Cable
O/P
Amplitude
TODAY'S DATE TIME
EXIT
CHANNEL
= 2Ø.ØØØ mV
TRIGGER
SIGNAL
CH 1
SIGNAL
CH 2
SIGNAL
CH 3
SIGNAL
CH 4
SIGNAL
CH 5
MULTI
CHANNEL
LOAD
5ØΩ 1MΩ
Descriptions assume 9500B/1100
Whenever the DC waveform is selected within
the DC/Square function an extra Soft Key is
available in the CHANNEL SELECT sub
menu.
Please note that Multi Channel DC Output
may only be configured to drive a UUT input
impedance of 1MΩ
This key toggles Multi Channel capability ON
and OFF. Whilst OFF, the operation of Channel
Selection is unchanged and is as previously
described. Refer para 4.5.3.1.. Whilst ON
(highlighted) each of the above Softkeys may
be toggled ON or OFF, to select Output from
any or all channels.
4.5.8 Using the 9500B DC Function to Calibrate the Amplitude
Response of a UUT Oscilloscope
4.5.8.1 Introduction
Two types of procedures for amplitude
calibration are given:
a. Using the 9500B as a fixed source, where
the oscilloscope can be adjusted;
b. Using the 9500B as an adjustable source,
reading oscilloscope deviations via the
9500B screen.
4.5.8.2 Interconnections
a. Use the appropriate active head to connect
from the required 9500B channel output to
the input of the UUT Signal Channel to be
calibrated.
b. If a trigger is required, use the appropriate
active head (or trigger cable) to connect
from the required 9500B channel output to
the input of the UUT Trigger for the
Channel to be calibrated.
4.5.8.3 UUT Scope: Amplitude
Calibration using the 9500B
as a Fixed Source of DC
Voltage
The following procedure assumes that the
9500B instrument is in Manual Mode. It is also
assumed that the user will be familiar with the
methods of editing screen values. In the case
of difficulty, re-read earlier paragraphs.
9500B and UUT Oscilloscope Setup
1. Preparation
Ensure that both instruments are powered ON
and warmed up.
2. UUT 'Scope
Select the required function for amplitude
calibration.
3. 9500B
Ensure that the 9500B is in DC Function with
Output OFF. If in any other function, press the
soft key at the top right of the screen,
then press the
Sequence of Operations
Refer to the table or list of UUT Oscilloscope
amplitude calibration points in the UUT
Oscilloscope Manufacturer's Calibration
Guide.
Follow the sequence of calibration stages as
directed by the guide, and carry out the
following operations (1) to (8) at each stage.
WAVEFORM screen key. Select
or as required.
Final Width = 215mm
Descriptions assume 9500B/1100
continued overleaf
Section 4: Using the Model 9500B — DC/Square Function 4.5-9
→
Final Width = 215mm
4.5.8 Using the 9500B DC Function to Calibrate the Amplitude Response of a UUT Oscilloscope
1. 9500B 4.5.8.4 UUT Scope — Amplitude
Use the front panel controls to set the 9500B
Output to the required DC voltage, polarity
and load impedance for the UUT 'Scope
amplitude cal point:
2. UUT 'Scope
a. Select the correct channel for the cal point.
b. Select 'DC-Coupled', if required.
c. Select the correct range for the cal point.
3. 9500B
a. Press the
row to provide a zero reference.
b. Set Output ON.
4. UUT 'Scope
a. Set the Y controls to place the trace on
graticule zero.
5. 9500B
Repress the
row to remove a zero reference.
6. UUT 'Scope
a. Auto-trigger the oscilloscope or use the
100Hz Trigger from the 9500B. Adjust
the UUT for a stable display.
b. Observe and note the DC level change
from graticule zero.
7. Calibration
a. If a calibration adjustment is provided,
adjust the UUT's response to be appropriate
to the settings on the 9500B screen, as
detailed in the UUT Oscilloscope
Manufacturer's Calibration Guide.
b. If no adjustment is provided on the UUT
'Scope, record its response at the calibration
point as detailed in the UUT Oscilloscope
Manufacturer's Calibration Guide.
8. 9500B Set Output OFF.
screen key on the bottom
screen key on the bottom
The following procedure assumes that the
9500B instrument is in Manual Mode. It is also
assumed that the user will be familiar with the
methods of editing screen values. In the case
of difficulty, re-read the paragraphs earlier in
this Section 4.
9500B and UUT Oscilloscope Setup
1. Preparation
Ensure that both instruments are powered ON
and warmed up.
2. UUT 'Scope
Select the required function for amplitude
calibration.
3. 9500B
Ensure that the 9500B is in DC Function with
Output OFF. If in any other function, press the
then press the
Sequence of Operations
Refer to the table or list of UUT Oscilloscope
amplitude calibration points in the UUT
Oscilloscope Manufacturer's Calibration
Guide.
Follow the sequence of calibration stages as
directed by the guide, and carry out the
following operations (1) to (8) at each stage.
Calibration using the 9500B
as an Adjustable Source of
DC Voltage
soft key at the top right of the screen,
WAVEFORM screen key. Select
or as required.
1. 9500B
Use the front panel controls to set the 9500B
Output to the required DC voltage, polarity
and load impedance for the UUT 'Scope
amplitude cal point:
2. UUT 'Scope
a. Select the correct channel for the cal point.
b. Select 'DC-Coupled', if required.
c. Select the correct range for the cal point.
3. 9500B
a. Press the
row to provide a zero reference.
b. Set Output ON.
4. UUT 'Scope
a. Set the Y controls to place the trace on
graticule zero.
5. 9500B
Repress the
row to remove a zero reference.
6. UUT 'Scope
a. Auto-trigger the oscilloscope or use the
100Hz Trigger from the 9500B. Adjust
the UUT for a stable display.
b. Observe and note the DC level change
from graticule zero.
7. Calibration
a. Use the 9500B Deviation control to slew
the 9500B Output voltage until the UUT's
response is appropriate to the 9500B
settings, as detailed in the UUT
Oscilloscope Manufacturer's Calibration
Guide.
b. Record the 9500B screen output voltage as
detailed in the UUT Oscilloscope
Manufacturer's Calibration Guide.
8. 9500B Set Output OFF.
screen key on the bottom
screen key on the bottom
(Contd.)
4.5-10 Section 4: Using the Model 9500B — DC/Square Function
Descriptions assume 9500B/1100
4.6 Sine Function
F
F
F
F
F
4.6.1 Introduction
This sub-section is a guide to the use of the
9500B to generate sine waves for flatness and
bandwidth calibration of oscilloscopes.
For those users who require more detailed
instructions for interconnections, and
manipulating the front panel controls, refer to
sub-sections 4.2, 4.3 and 4.4. Section 4.6 is
divided into the following sub-sections:
4.6.1 Introduction .................................................... 4.6-1
4.6.2 Default Settings .............................................. 4.6-1
4.6.3 Menu Selections............................................. 4.6-1
4.6.3.1 Retained Channel Memory ............. 4.6-1
4.6.3.2 Right Side Screen Keys - Digit Edit/
Sequence Scroll............................. 4.6-1
4.6.3.3 Right Side Screen Keys - Numeric
Entry............................................... 4.6-2
4.6.3.4 Bottom Screen Keys Digit Edit/Sequence Scroll and
4.6.4 Sinewave Operation........................................ 4.6-2
4.6.5 Dual Channel Operation ................................. 4.6-3
4.6.6 Using the 9500B Levelled Sine Function to
4.6.2 Default Settings
When Manual mode is selected the system
defaults into DC/Square function and shows
the DC/Square function initial menu screen.
Sine function can be accessed by pressing the
function key on the right of the
'OSCILLOSCOPE CALIBRATOR' panel.
Whenever the
except on recovery from a standby period, it
will appear with the following default settings:
Numeric Entry ................................ 4.6-2
4.6.4.1 Value Editing .................................. 4.6-2
4.6.4.2 Output Voltage Editing ................... 4.6-2
4.6.5.1 Dual Channel Selection .................. 4.6-3
Calibrate the Flatness/Bandwidth Response
of a UUT Oscilloscope .................................... 4.6-4
4.6.6.1 Introduction.................................... 4.6-4
4.6.6.2 Interconnections............................. 4.6-4
4.6.6.3 Common Setup .............................. 4.6-4
4.6.6.4 UUT Scope - Flatness Calibration
using the 9500B as a Fixed Source 4.6-4
4.6.6.5 UUT Scope - Flatness Calibration
using the 9500B as an Adjustable
Source............................................ 4.6-4
menu screen is opened,
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
5.ØØ mV/div x6 = 3Ø.ØØØ mV
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
= ØØ.ØØ %
= 3Ø.ØØØ mV
= 5Ø.ØØØ kHz
CHANNEL
SELECT
pk-pk
pk-pk
x 1Ø
÷ 1Ø
∆ = Ø
RE
1
2
5
1.Ø
The above default screen has auto-selected the
frequency of 50kHz. Deviation has defaulted
to zero, and output voltage to 30.000mVp-p.
Frequency is variable between 0.1Hz and
1.1GHz (variant 9500B/1100 — for other
variants refer to specifications in Section 7).
4.6.3 Menu Selections
Except for Dual Channel operation (paras
4.6.5), all Signal Channel selection, Trigger
Channel selection, Cable selection and Trigger
Ratio operate in the same way as in DC/Square
function. Refer to paras 4.5.3.
4.6.3.1 Retained Channel Memory
Refer to para 4.5.3.6.
4.6.3.2 Right Side Screen Keys —
Digit Edit/Sequence Scroll
Keys operate on the value marked by the
cursor. The key labels will change depending
on the cursor position, as indicated in the next
column:
i. Cursor on Units/div:
X10 Multiplies the Units/div by ten.
÷10 Divides the Units/div by ten.
∆ = Ø Toggles the Deviation value
between the marked value and zero.
RE
Toggles between the marked
frequency and the reference
frequency.
ii. Cursor on Multiplier:
∆ = Ø Toggles the Deviation value
between the marked value and zero.
RE
Toggles between the marked
frequency and the reference
frequency.
iii. Cursor on Deviation:
∆ = Ø Toggles the Deviation value
between the marked value and zero.
∆% ∆V
∆% ∆V
RE
Press to set Deviation value in
absolute units.
Press to set Deviation value in
percent of set value.
Toggles between the marked
frequency and the reference
frequency.
iv. Cursor on Frequency/Period:
X10 Multiplies the marked value by ten.
÷ 10 Divides the marked value by ten.
∆ = Ø Toggles the Deviation value
between the marked value and zero.
RE
Toggles between the marked
frequency and the reference
frequency.
Press to change display from
1
Frequency to Period.
Press to change display from Period
1
to Frequency.
Final Width = 215mm
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Sine Function 4.6-1
Final Width = 215mm
4.6.3 Menu Selections (Contd.)
4.6.3.3 Right Side Screen Keys —
Numeric Entry
Right side screen keys operate on the value in
the edit box, and acting in place of the ↵ key,
exit from Numeric Entry back to Digit Edit/
Sequence Scroll; then set the value as evaluated
in the box:
Cursor on Deviation:
% Evaluates the number in the box in
Deviation Percentage.
V Evaluates the number in the box in
Volts.
mV Evaluates the number in the box in
Millivolts.
Cursor on Frequency:
Hz Evaluates the number in the box in
Hertz.
kHz Evaluates the number in the box in
Kilohertz.
MHz Evaluates the number in the box in
Megahertz.
GHz Evaluates the number in the box in
Gigahertz.
4.6.3.4 Bottom Screen Keys —
Digit Edit/Sequence Scroll
and Numeric Entry
CHANNEL Permits the screen signal setup to
SELECT be routed to any of the five heads,
allowing selection of trigger
channel, trigger ratio and cable
1
5
1
2
5
channel (paras 4.5.3).
2
Currently in Scope mode. Press to
1.Ø
select Direct Mode (paras 4.4.3/4).
1.Ø
Currently in Direct mode. Press to
select Scope Mode (setting the step
sequence to '1, 2, 5' or
'1, 2, 2.5, 4, 5' as chosen using the
Preferences key) (paras 4.4.1/2).
4.6.4 Sine Function Operation
4.6.4.1 Value Editing
Amplitude
At maximum and minimum output voltages, the screen settings of the contributors' values
(units/division, scaling multiplier and deviation) are limited by the output voltage itself (refer
to Table 4.6.4.1).
Frequency: 100mHz - 550.00MHz Frequency: 550.01MHz - 1.1GHz
Minimum Maximum Minimum Maximum
Output Voltage 4.44mV p-p 5.56V p-p 4.44mV p-p 3.336V p-p
Limit
Units/Division 1mV/div 2V/div 1mV/div 2V/div
Scaling Multiplier 110110
Deviation -11.20% +11.20% -11.20% +11.20%
Table 4.6.4.1 Sine Function — Output Voltage Limits and Contributors Limits
Provided they do not exceed the output voltage
limits shown, the contributors have the
following adjustments (Scope mode):
a. Units/Division in Volts/division in the
adjustable sequence: 1 - 2 - 5 or (using
'Pref') 1 - 2 - 2.5 - 4 - 5; default 5mV/div.
b. Scaling Multiplier (adjustable through
integers 1 to 10; default 6).
c. Percentage Deviation (a maximum range
of ±11.20% about the value of (
a) x (b), at
a resolution of four significant digits, with
two decimal places; default zero). Digit
Edit, Sequence Scroll or Numeric Entry
can be used.
d. Output Voltage (adjustable in Digit Edit/
Sequence Scroll only, by manipulation of
(
a), (b) and (c); default 30.000mV).
4.6.4.2 Output Voltage Editing
Editing follows the same general rules as for
editing voltages described in paras 4.4.
Tab
Key and Cursors (Scope Mode)
Repeatedly pressing this key moves the cursor
from the default Units/Division to the
Multiplier, then Deviation, finally to the
Frequency and back to the Units/Division.
The type of cursor at each position indicates
the type of adjustment possible to that value.
Units/Division (Scope Mode)
The type of cursor (barred) used for the units/
division signifies that the value can be adjusted
only as a step-sequence value using the
keys. The
and
and
keys are
inactive.
From the default '5mV/div', the value can be
raised using the
key by increments through
10mV/div, 20mV/div, 50mV/div and so on up
to 2V/div, providing that the other contributors
will not take the output voltage value above
5.56Vp-p (≤550MHz) or 3.336Vp-p
(>550MHz). Similarly, the
key will reduce
the Units/Division down to 1mV/div, unless
the output voltage would fall below 4.44mVpp (all frequencies).
Multiplier (Scope Mode)
Again the
and
keys are inactive.
From the default 'x 6', the value can be changed
using the
and
keys, by single integer
increments to values between 1 and 10,
providing that the other contributors do not
take the output voltage value out of its limits.
The product of the units/division and multiplier
are shown on the right side of the '=' sign.
4.6-2 Section 4: Using the Model 9500B — Sine Function
Descriptions assume 9500B/1100
Deviation (Scope and Direct Mode)
The triangular type of cursor indicates that all
the cursor keys can be used as in other functions.
From the default 00.00%, the deviation
percentage can be changed to any value within
its resolution between -11.20% and +11.20%.
The result of combining the units/division,
multiplier and deviation are shown as the p-p
value of 'O/P Amplitude'.
Output Voltage (Scope and Direct Mode)
The O/P Amplitude is only adjustable by means
of its contributors.
Frequency (Scope and Direct Mode)
The triangular type of cursor indicates that all
the cursor keys can be used.
From the default 50kHz, the output frequency
can be changed to any value within its resolution
between 100mHz and 1.1GHz (O/P
Amplitude ≤3.336Vp-p) or between 100mHz
and 550MHz (any valid O/P Amplitude).
4.6.4.3 Limitations for UUT Scope
input impedance of 1M
The selection of UUT Oscilloscope input
impedance of 50Ω is strongly recommended
when using the Sine Function at high frequency
(e.g. >100MHz). This ensures that the 9500B
output signal is correctly terminated within the
UUT.
There are however many Oscilloscopes that do
not feature an input 50Ω terminator. To address
these instruments the 9500B, when configured
to drive 1MW, applies its own 50Ω terminator
within the Active Head (9510, 9520, 9530
only). However the effectiveness of this
approach is limited by short but finite signal
path length to the UUT input amplifiers and
their input capacitance. Substantial Sine
amplitude errors may result from this unterminated transmission line.
Error magnitude and the frequency at which it
becomes significant may vary as UUT input
attenuators are selected (V/div adjustment)
and are highly dependent upon UUT design
and construction.
Errors due to signal path length may be reduced
slightly by using a BNC 50W thru termination
between the 9500 output and the UUT input.
Again effectiveness will be limited by
remaining path length and capacitance within
the UUT.
In all cases frequencies above 500MHz are not
recommended for use into UUT input
Ω
Final Width = 215mm
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Sine Function 4.6-3
F
4.6.5 Dual Channel Operation
Final Width = 215mm
4.6.5.1 Dual Channel Selection
(Two channels/heads
activated)
For certain oscilloscope test and calibration
procedures, such as 'channel trigger sensitivity'
and 'X/Y test', it is necessary to provide the
oscilloscope with two identical sinewave
signals. Dual Channel Sine function allows
the 9500B and UUT oscilloscope to remain
connected, without the need to insert physical
cable couplers. This is particularly useful
during automated calibration and test.
N.B. For this function two heads must be
connected and activated.
When two channels are used, it is necessary to
choose one of the channels as 'Master', and one
as 'Slave'. The Master channel controls the
feedback, whereas the Slave repeats the signal.
To select two channels, press the CHANNEL
SELECT soft key to select the Master channel,
in this case Signal Channel 3:
pk-pk
SIGNAL
CH 1
SIGNAL
CH 2
SIGNAL
CH 3
SIGNAL
CH 4
SIGNAL
CH 5
DUAL
CHANNEL
LOAD
5ØΩ 1MΩ
SIGNAL CH3 5ØΩ
OFF
TRIGGER NONE
CHANNEL 1>150ps Head
CHANNEL 2>150ps Head
CHANNEL 3>Standard Head
CHANNEL 4>No Head
CHANNEL 5>No Head
O/P
Amplitude
Frequency
TODAY'S DATE TIME
EXIT
TRIGGER
CHANNEL
= 3Ø.ØØØ mV
= 5Ø.ØØØ kHz
pk-pk
SIGNAL
CH 1
SIGNAL
CH 2
SIGNAL
CH 3
SIGNAL
CH 4
SIGNAL
CH 5
DUAL
CHANNEL
LOAD
5ØΩ 1MΩ
DUAL CH3,- 5ØΩ
OFF
TRIGGER NONE
CHANNEL 1>150ps Head
CHANNEL 2>150ps Head
CHANNEL 3>Standard Head
CHANNEL 4>No Head
CHANNEL 5>No Head
O/P
Amplitude
Frequency
TODAY'S DATE TIME
EXIT
TRIGGER
CHANNEL
= 3Ø.ØØØ mV
= 5Ø.ØØØ kHz
Next select the Slave channel, in this case
Signal Channel 2:
pk-pk
SIGNAL
CH 1
SIGNAL
CH 2
SIGNAL
CH 3
SIGNAL
CH 4
SIGNAL
CH 5
DUAL
CHANNEL
LOAD
5ØΩ 1MΩ
DUAL CH3, 2 5ØΩ
OFF
TRIGGER NONE
CHANNEL 1>150ps Head
CHANNEL 2>150ps Head
CHANNEL 3>Standard Head
CHANNEL 4>No Head
CHANNEL 5>No Head
O/P
Amplitude
Frequency
TODAY'S DATE TIME
EXIT
TRIGGER
CHANNEL
= 3Ø.ØØØ mV
= 5Ø.ØØØ kHz
Both channel key labels and the Dual channel
label are highlighted, and the legend in the box
at the top of the screen shows the two channels
selected, the Master written first.
Pressing EXIT will return to the main Dual
Channel Sine screen, so that other parameters
can be set:
DUAL CH3, 2 5ØΩ
OFF
TRIGGER NONE
5.ØØ mV/div x6 = 3Ø.ØØØ mV
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
= ØØ.ØØ %
= 3Ø.ØØØ mV
= 5Ø.ØØØ kHz
CHANNEL
SELECT
pk-pk
pk-pk
x 1Ø
÷ 1Ø
∆ = Ø
RE
1
2
5
1.Ø
Note that the upper sinewave amplitude range
limits are halved by invoking Dual Channel
Sine function.
Now press the DUAL CHANNEL soft key,
and the Dual Channel screen icon will appear.
4.6-4 Section 4: Using the Model 9500B — Sine Function
Descriptions assume 9500B/1100
4.6.6 Using the 9500B Levelled Sine Function to Calibrate the
Flatness/Bandwidth Response of a UUT Oscilloscope
4.6.6.1 Introduction
Two types of procedures for flatness and
bandwidth calibration are given:
a. Using the 9500B as a fixed source, where
the oscilloscope can be adjusted;
b. Using the 9500B as an adjustable source,
reading oscilloscope deviations via the
9500B screen.
4.6.6.2 Interconnections
a. Use an active head to connect from the
required 9500B channel output to the input
of the UUT Signal Channel to be calibrated.
b. If a trigger is required, use an active head
(or trigger cable) to connect from the
required 9500B channel output to the input
of the UUT Trigger.
4.6.6.3 Common Setup
The following procedures assume that the
9500B instrument is in Manual Mode. It is also
assumed that the user will be familiar with the
methods of editing screen values. In the case
of difficulty, re-read the paragraphs earlier in
this Section 4.
9500B and UUT Oscilloscope Setup
1. Preparation
Ensure that both instruments are powered ON
and warmed up.
2. UUT 'Scope
Select the required function for flatness
calibration.
3. 9500B
Ensure that the 9500B is in Sine Function with
Output OFF. If in any other function, press the
key at the right of the front panel.
4.6.6.4
UUT Scope — Flatness Calibration
using the 9500B as a Fixed Source
Sequence of Operations
Refer to the table or list of UUT Oscilloscope
flatness calibration points in the UUT
Oscilloscope Manufacturer's Calibration
Guide.
Follow the sequence of calibration stages as
directed by the guide, and carry out the
following operations (1) to (6) at each stage.
1. 9500B
Use the front panel controls to set the 9500B
Output to the required sine wave p-p voltage,
frequency and load impedance for the UUT
'Scope flatness cal point:
2. UUT 'Scope
a. Select the correct channel for the cal point.
b. Select the correct range for the cal point.
3. 9500B Set Output ON.
4. UUT 'Scope
a. Adjust the sweep speed and trigger level
for a stable display.
b. Observe and note the amplitude response.
5. Calibration
a. If a calibration adjustment is provided,
adjust the UUT's response to be appropriate
to the settings on the 9500B screen, as
detailed in the UUT Oscilloscope
Manufacturer's Calibration Guide.
b. If no adjustment is provided on the UUT
'Scope, record its response at the calibration
point as detailed in the UUT Oscilloscope
Manufacturer's Calibration Guide.
6. 9500B Set Output OFF.
4.6.6.5
UUT Oscilloscope — Flatness
Calibration using the 9500B as an
Adjustable Source
Sequence of Operations
Refer to the table or list of UUT Oscilloscope
amplitude calibration points in the UUT
Oscilloscope Manufacturer's Calibration
Guide.
Follow the sequence of calibration stages as
directed by the guide, and carry out the
following operations (1) to (6) at each stage.
1. 9500B
Use the front panel controls to set the 9500B
Output to the required sine wave p-p voltage,
frequency and load impedance for the UUT
'Scope flatness cal point:
2. UUT 'Scope
a. Select the correct channel for the cal point.
b. Select the correct range for the cal point.
3. 9500B Set Output ON.
4. UUT 'Scope
a. Adjust the sweep speed and trigger level
for a stable display.
b. Observe and note the amplitude response.
5. Calibration
a. Use the 9500B Deviation control to slew
the 9500B Output voltage until the UUT's
response is appropriate to the 9500B
settings, as detailed in the UUT
Oscilloscope Manufacturer's Calibration
Guide.
b. Record the 9500B screen output voltage as
detailed in the UUT Oscilloscope
Manufacturer's Calibration Guide.
6. 9500B Set Output OFF.
Final Width = 215mm
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Sine Function 4.6-5
Final Width = 215mm
4.6-6 Section 4: Using the Model 9500B — Sine Function
Descriptions assume 9500B/1100
4.7 Edge Function
4.7.1 Introduction
This sub-section is a guide to the use of the
9500B for generating defined pulse edges to
examine oscilloscope pulse response.
For those users who require more detailed
instructions for interconnections, and
manipulating the front panel controls, refer to
sub-sections 4.2, 4.3 and 4.4.
4.7.1 Introduction .................................................... 4.7-1
4.7.2 Default Settings .............................................. 4.7-1
4.7.3 Menu Selections............................................. 4.7-1
4.7.3.1 Retained Channel Memory ............. 4.7-1
4.7.3.2 Right Side Screen Keys - Digit Edit 4.7-1
4.7.3.3 Right Side Screen Keys - Direct Edit4.7-2
4.7.3.4 Bottom Screen Keys -
Digit and Direct Edit ....................... 4.7-2
4.7.4 Edge Function Operation ................................ 4.7-2
4.7.4.1 Value Editing .................................. 4.7-2
4.7.4.2 Output Voltage Editing ................... 4.7-2
4.7.4.3 Low Voltage (LV) and
High Voltage (HV) States ............... 4.7-3
4.7.5 Using Active Head Models 9510, 9520, 9530 4.7-3
4.7.5.1 Introduction.................................... 4.7-3
4.7.6 Using the 9500B Edge Function to Calibrate the
Pulse Response of a UUT Oscilloscope .......... 4.7-4
4.7.6.1 Introduction.................................... 4.7-4
4.7.6.2 Interconnections............................. 4.7-4
4.7.6.3 Common Setup .............................. 4.7-4
4.7.6.4 UUT Scope - Pulse Response
Calibration using the 9500B
as a Fixed Source........................... 4.7-4
4.7.2 Default Settings
When Manual mode is selected the system
defaults into DC/Square function and shows
the DC/Square function initial menu screen.
Edge function can be accessed by pressing the
function key on the right of the
'OSCILLOSCOPE CALIBRATOR' panel.
Whenever the Edge menu screen is opened,
except on recovery from a standby period, it
will appear with the following default settings:
500ps
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
Ø.2Ø V /div x5 = 1.ØØØØ V
Deviation
O/P
Amplitude
Frequency
Rise Time
TODAY'S DATE TIME
HV
= ØØ.ØØ %
= 1.ØØØØ V
= 1.ØØØØ MHz
= ------
500ps
FAST
CHANNEL
SELECT
pk-pk
pk-pk
x 1Ø
÷ 1Ø
∆ = Ø
1
2
5
1.Ø
The above default screen has auto-selected a
frequency of 1MHz, a rise time of 500ps, zero
deviation and an output level of 1Vpk-pk.
4.7.3 Menu Selections
Signal Channel selection, Trigger Channel
selection, Cable selection and Trigger Ratio all
operate in the same way as in DC/Square
function. Refer to paras 4.5.3.
4.7.3.1 Retained Channel Memory
Refer to para 4.5.3.6.
4.7.3.2 Right Side Screen Keys —
Digit Edit
Keys operate on the value marked by the
cursor. The key labels will change depending
on the cursor position, as indicated.:
i. Cursor on Units/div:
X10 Multiplies the Units/div by ten.
÷10 Divides the Units/div by ten.
∆ = Ø Toggles the Deviation value
between the marked value and zero.
Press to select falling edge
(Function icon follows).
Press to select rising edge
(Function icon follows).
ii. Cursor on Multiplier:
∆ = Ø Toggles the Deviation value
between the marked value and zero.
Press to select falling edge
(Function icon follows).
Press to select rising edge
(Function icon follows).
iii. Cursor on Deviation:
∆ = Ø Toggles the Deviation value
between the marked value and zero.
Press to select falling edge
(Function icon follows).
Press to select rising edge
(Function icon follows).
∆% ∆V
∆% ∆V
Press to set Deviation value in
absolute units.
Press to set Deviation value in
percent of set value.
iv. Cursor on Frequency/Period:
X10 Multiplies the marked value by ten.
÷ 10 Divides the marked value by ten.
∆ = Ø Toggles the Deviation value
between the marked value and zero.
Press to select falling edge
(Function icon follows).
Press to select rising edge
(Function icon follows).
Press to change display from
1
Frequency to Period.
Press to change display from Period
1
to Frequency.
v. Cursor on Fast:
Press to select 150ps pulse function.
150ps
(Function icon follows).
Press to select 70ps pulse function.
70ps
(Function icon follows).
Press to select 25ps pulse function.
25ps
(Function icon follows).
Final Width = 215mm
Descriptions assume 9500B/1100
continued overleaf
Section 4: Using the Model 9500B — Edge Function 4.7-1
→
Final Width = 215mm
4.7.3 Menu Selections (Contd.) 4.7.4 Edge Function Operation
4.7.3.3 Right Side Screen Keys —
Direct Edit
Right side screen keys operate on the value in
the edit box, and acting in place of the ↵ key,
exit from Direct Edit back to Digit Edit; then
set the value as evaluated in the box:
Cursor on Deviation:
% Evaluates the number in the box in
Deviation Percentage.
V Evaluates the number in the box in
Volts.
mV Evaluates the number in the box in
Millivolts.
4.7.3.4 Bottom Screen Keys —
Digit and Direct Edit
Selects High-Edge pulse
HV
(highlighted when selected).
Selects 500ps-Edge pulse
500ps
(highlighted when selected).
Selects Fast Edge pulse
Fast
(highlighted when selected).
CHANNEL Permits the screen signal setup to
SELECT be routed to any of the five heads,
allowing selection of trigger
channel, trigger ratio and cable
channel (paras 4.5.3).
1
5
1
5
Press to select Direct Mode (paras
2
1.Ø
4.4.3/4).
Press to select Scope Mode (setting
2
1.Ø
the step sequence to '1, 2, 5' or
'1, 2, 2.5, 4, 5' as chosen using the
Preferences key) (paras 4.4.1/2).
4.7.4.1 Value Editing
The section below assumes the use of a 9510 or 9530 Active Head. Operating output level and
frequency boundaries vary for other Head types, Refer para 7.4.1 .
Amplitude
At maximum and minimum output voltages, the screen settings of the contributors' values
(units/division, scaling multiplier and deviation) are limited by the output voltage itself (refer
to Table 4.7.4.1).
9510 or 9530 Heads (High Edge) 500ps Edge & Fast Edge
Frequency: 10Hz - 100kHz Frequency: 10Hz - 2MHz
Minimum Maximum Minimum Maximum
Output Voltage 888mV p-p 5.56V p-p 4.44mV p-p 3.10V p-p
Limit
Units/Division 0.2V/div 2V/div 1mV/div 1V/div
Scaling Multiplier 15110
Deviation -11.20% +11.20% -11.20% +11.20%
Table 4.7.4.1 Edge Function — Output Voltage Limits and Contributors Limits
Provided they do not exceed the output voltage
limits shown, the contributors have the
following adjustments (Scope mode):
a. Units/Division in Volts/division
(adjustable sequence: 1-2-5 or 1-2-2.5-45; defaults: High Edge: 1V, others: 0.2V).
b. Scaling Multiplier (adjustable through
integers - High Edge: 1 to 5; default 5,
others 1 to 10; default 5 ).
c. Percentage Deviation (a maximum range
of ±11.20% about the value of (
a) x (b), at
a resolution of four significant digits, with
two decimal places; default zero). Digit or
direct edit can be used.
d. Output Voltage (adjustable in digit edit
only, by manipulation of (
a), (b) and (c);
defaults: High Edge: 5V, others: 1V).
4.7.4.2 Output Voltage Editing
The 'Digit' and 'Direct' editing processes follow
the same general rules as for editing voltages
described in paras 4.4.
Tab
Key and Cursors (Scope Mode)
Repeatedly pressing this key moves the cursor
from the default Units/Division to the
Multiplier, then Deviation, finally to the
Frequency and back to the Units/Division.
The type of cursor at each position indicates
the type of adjustment possible to that value.
Units/Division (Scope Mode)
The type of cursor (barred) used for the units/
division signifies that the value can be adjusted
only as a step-sequence value using the
keys. The
and
and
keys are
inactive.
4.7-2 Section 4: Using the Model 9500B — Edge Function
Descriptions assume 9500B/1100
4.7.5 Using Active Heads
500ps Edge and Fast Edge
From the default '0.2V/div', the value can be
raised using the
and so on to 1V/div, providing that the other
contributors will not take the output voltage
value above 3.00Vp-p.
will reduce the Units/Division down through
0.1V/div and so on to 1mV/div, unless the
output voltage would fall below 4.44mVp-p
(all frequencies).
High Edge
For High Edge the default is '1V/div', the upper
limit is 2V/div (O/P Ampl. limit for 1MΩ load
5.56Vp-p).
1mV/div,
Multiplier (Scope Mode)
500ps Edge, Fast Edge and High Edge
Again the
From the default 'x 5', the value can be changed
using the
increments to values between 1 and 10, within
output voltage value limits. The product of the
units/division and multiplier are shown on the
right side of the '=' sign.
Deviation (Scope and Direct Mode)
The triangular type of cursor indicates that all
the cursor keys can be used as in other functions.
From the default 00.00%, the deviation
percentage can be changed to any value within
its resolution between -11.20% and +11.20%,
within output voltage value limits. The result
of combining the units/division, multiplier and
deviation are shown as the p-p value of 'O/P
Amplitude'.
Output Voltage (Scope and Direct Mode)
The O/P Amplitude is only adjustable by means
of its contributors.
(O/P Ampl. limit 888mVp-p)
key up through 0.5V/div
Similarly, the
The lower limit is 0.2V/div to
and
and
keys are inactive.
keys, by single integer
key
.
500ps Edge and Fast Edge
From the default 1.0000V p-p, the output
voltage can be changed to any value within its
resolution between
The software ensures that the contributors'
values remain within their limits.
High Edge
From the default 5.0000V p-p, the output
voltage can be changed to any value within its
resolution between 888mVp-p and 5.56Vp-p
(1MΩ expected load only). The software
ensures that the contributors' values remain
within their limits.
Frequency (Scope and Direct Mode)
500ps Edge and Fast Edge
From the default 1MHz, the output frequency
can be changed to any value within its resolution
between 10Hz and 2MHz.
High Edge
From the default 1kHz, the output frequency
can be changed to any value within its resolution
between 10Hz and 100kHz.
Rise (Fall) Time (Scope and Direct Mode)
When each head is calibrated, its measured
(10% to 90%) transition times for each type of
edge are stored in non-volatile memory. During
normal use, this figure is recalled and presented
on the 'Rise Time' field for the selected head
(channel) and selected type of edge.
4.7.4.3 Low Voltage (LV) and
Entering and leaving High Voltage state in
High Edge Function is governed by the same
rules as for Square function (refer to para
4.5.5.3). The threshold-setting limits are
±10Vpk-pk and ±110Vpk-pk.
4.44mVp-p and 3.0000Vp-p
High Voltage (HV) States
4.7.5.1 Introduction
Active heads are introduced briefly in paras
4.2.2 (Interconnections).
.
The front panel operations of Signal Channel
selection, Trigger Channel selection, Cable
selection and Trigger Ratio are described earlier
in paras 4.5.3 (DC/Square function).
Final Width = 215mm
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Edge Function 4.7-3
4.7.6 Using the 9500B Edge Function to Calibrate the Pulse Response of a UUT Oscilloscope
Final Width = 215mm
4.7.6.1 Introduction
Two types of procedures for pulse response
calibration use the 9500B as a fixed source,
where the oscilloscope can or cannot be
adjusted.
4.7.6.2 Interconnections
a. Use the appropriate active head to connect
from the required 9500B channel output to
the input of the UUT Signal Channel to be
calibrated.
b. If a trigger is required, use the appropriate
active head (or trigger cable) to connect
from the required 9500B channel output to
the input of the UUT Trigger for the
Channel to be calibrated.
4.7.6.3 Common Setup
The following procedures assume that the
9500B instrument is in Manual Mode. It is also
assumed that the user will be familiar with the
methods of editing screen values. In the case
of difficulty, re-read the paragraphs earlier in
this Section 4.
9500B and UUT Oscilloscope Setup
1. Preparation
Ensure that both instruments are powered ON
and warmed up.
2. UUT 'Scope
Select the required function for pulse response
calibration.
3. 9500B
Ensure that the 9500B is in Edge Function with
Output OFF. If in any other function, press the
key at the right of the front panel.
4.7.6.4 UUT Scope — Pulse
Response Calibration using
the 9500B as a Fixed
Source
Sequence of Operations
Refer to the table or list of UUT Oscilloscope
flatness calibration points in the UUT
Oscilloscope Manufacturer's Calibration
Guide.
Follow the sequence of calibration stages as
directed by the guide, and carry out the
following operations (1) to (6) at each stage.
1. 9500B
Use the front panel controls to set the 9500B
Output to the required edge p-p voltage,
frequency and load impedance for the UUT
'Scope pulse response cal point:
2. UUT 'Scope
a. Select the correct channel for the cal point.
b. Select the correct range for the cal point.
3. 9500B Set Output ON.
4. UUT 'Scope
a. Adjust the sweep speed and trigger level
for a stable display.
b. Observe and note the pulse shape response.
5. Calibration
a. If a calibration adjustment is provided,
adjust the UUT's pulse shape. Note rise
time and aberration, as detailed in the UUT
Oscilloscope Manufacturer's Calibration
Guide.
b. If no adjustment is provided on the UUT
'Scope, note rise time and aberration, as
detailed in the UUT Oscilloscope
Manufacturer's Calibration Guide.
6. 9500B Set Output OFF.
4.7-4 Section 4: Using the Model 9500B — Edge Function
Descriptions assume 9500B/1100
4.8 Time Markers Function
4.8.1 Introduction
This sub-section is a guide to the use of the
9500B for generating square waves and DC
voltages for use for amplitude calibration of
oscilloscopes.
For those users who require more detailed
instructions for interconnections, and
manipulating the front panel controls, refer to
sub-sections 4.2, 4.3 and 4.4. Section 4.8 is
divided into the following sub-sections:
4.8.1 Introduction .................................................... 4.8-1
4.8.2 Default Settings .............................................. 4.8-1
4.8.3 Menu Selections............................................. 4.8-1
4.8.3.1 Retained Channel Memory ............. 4.8-1
4.8.3.2 Choosing a Waveshape .................. 4.8-1
4.8.3.3 Right Side Screen Keys - Digit Edit 4.8-2
4.8.3.4 Right Side Screen Keys - Direct Edit4.8-2
4.8.3.5 Bottom Screen Keys -
Digit and Direct Edit ....................... 4.8-2
4.8.4 Time Markers Operation ................................. 4.8-2
4.8.4.1 Value Editing .................................. 4.8-2
4.8.4.2 Output Period Editing..................... 4.8-3
4.8.4.3 Highlighted Marker Styles .............. 4.8-3
4.8.5 Using the 9500B Time Markers Function to
Calibrate the Time Base of a UUT
Oscilloscope ................................................... 4.8-4
4.8.5.1 Introduction.................................... 4.8-4
4.8.5.2 Interconnections............................. 4.8-4
4.8.5.3 Common Setup .............................. 4.8-4
4.8.5.4 UUT Scope - Time Base Calibration
using the 9500B as a Fixed Source 4.8-4
4.8.5.5 UUT Scope - Time Base Calibration
using the 9500B as an Adjustable
Source............................................ 4.8-4
4.8.2 Default Settings
When Manual mode is selected the system
defaults into DC/Square function and shows
the DC/Square function initial menu screen.
Time Markers function can be accessed by
pressing the
function key on the right of
the 'OSCILLOSCOPE CALIBRATOR' panel.
Whenever the
menu screen is opened,
except on recovery from a standby period, it
will appear with the following default settings,
although some settings may have been made
non-volatile (refer to para 4.5.3.6):
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
Time Marker = 1.ØØØØ µs
Deviation
Period = 1.ØØØØ µs
O/P
Amplitude
TODAY'S DATE TIME
WAVE
FORM
= ØØ.ØØ %
= 1.ØØØØ V
CHANNEL
SELECT
pk-pk
x 1Ø
÷ 1Ø
∆ = Ø
LINE
FREQ
1
2
5
1
1.Ø
The above default screen has auto-selected the
square waveform, as indicated by the icon in
the top left corner. Square waveform Period is
variable between 10ns and 50s (sine waveform
is used above approx. 100MHz). Sine
waveform Period is variable between 500ps
and 10ns (variant 9500B/1100 — for other
variants refer to specifications in Section 7).
Period has defaulted to 1µs (square), deviation
'∆' to zero, and output voltage to 1.0000Vp-p.
The Duty Cycle is fixed at a nominal 50%.
4.8.3 Menu Selections
Signal Channel selection, Trigger Channel
selection, Cable selection and Trigger Ratio all
operate in the same way as in DC/Square
function. Refer to paras 4.5.3.
4.8.3.1 Retained Channel Memory
Refer to para 4.5.3.6.
4.8.3.2 Choosing a Waveshape
All waveshapes (Marker Styles) in this function
can be selected on a second menu screen. This
is activated by pressing the '
WAVEFORM'
screen key on the bottom row. The screen
changes to show the available waveforms:
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
Time Marker = 1.ØØØØ µs
Deviation
= ØØ.ØØ %
Period = 1.ØØØØ µs
O/P
Amplitude
TODAY'S DATE TIME
WAVE
FORM
= 1.ØØØØ V
The WAVEFORM key label is highlighted to
indicate that waveform selection is available,
as is the presently-selected waveform icon.
Pressing one of the waveform keys (for
example: the
key) to select a different
waveform will return to the previous screen
(providing that the frequency is appropriate),
with the icon of the selected waveform showing
in the top left corner:
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
Time Marker = 1.ØØØØ µs
Deviation
= ØØ.ØØ %
Period = 1.ØØØØ µs
O/P
Amplitude
TODAY'S DATE TIME
WAVE
FORM
= 1.ØØØØ V
pk-pk
CHANNEL
SELECT
pk-pk
CHANNEL
SELECT
1
2
5
x 1Ø
÷ 1Ø
∆ = Ø
LINE
FREQ
1
2
5
1.Ø
1
1.Ø
Final Width = 215mm
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Time Markers Function 4.8-1
Final Width = 215mm
4.8.3.3 Right Side Screen Keys —
Digit Edit
Keys operate on the value marked by the
cursor. The key labels will change depending
on the cursor position, as indicated.:
i. Cursor on any parameter:
∆ = Ø Toggles the Deviation value
between the marked value and zero.
LINE
FREQ
Line frequency output is available
only for 'Square' waveform
selection. The key toggles between
internal Period/Frequency and the
Line input Frequency.
ii. Cursor on Time Marker:
X10 Multiplies the displayed value by
ten.
÷10 Divides the displayed value by ten.
Press to change display from Period
1
to Frequency.
Press to change display from
1
Frequency to Period.
iii. Cursor on Deviation:
∆%
∆% ∆s
value in absolute units.
Press to set Time Marker Period
Deviation value in percent of Time
Press to set Time Marker Deviation
∆s
Marker Period value.
iv. Cursor on O/P Amplitude:
See (i) above.
4.8.3.4 Right Side Screen Keys —
Direct Edit
Right side screen keys operate on the value in
the edit box, and acting in place of the ↵ key,
exit from Direct Edit back to Digit Edit; then
set the value as evaluated in the box:
Cursor on Deviation:
% Evaluates the number in the box in
Period Deviation Percentage.
s Evaluates the number in the box in
Seconds.
ms Evaluates the number in the box in
Milliseconds.
µ s Evaluates the number in the box in
Microseconds.
ns Evaluates the number in the box in
Nanoseconds.
4.8.3.5 Bottom Screen Keys —
Digit and Direct Edit
WAVE Provides a second menu screen
FORM for selection between three Time
Marker waveshapes or their highlighted versions. (paras 4.8.4.3).
With output on, the output to the
UUT is grounded, for any waveform
or DC selection.
CHANNEL Permits the screen signal setup to
SELECT be routed to any of the five heads,
allowing selection of trigger
channel, trigger ratio and cable
channel (paras 4.5.3).
1
5
1
5
Press to select Direct Mode (paras
2
1.Ø
4.4.3/4).
Press to select Scope Mode (setting
2
1.Ø
the step sequence to '1, 2, 5' or
'1, 2, 2.5, 4, 5' as chosen using the
Preferences key) (paras 4.4.1/2).
4.8.4 Time Markers Operation
4.8.4.1 Value Editing
Output Period/Frequency
At maximum and minimum output period, the screen settings of the contributors' values
(Time Marker and Deviation) are limited by both the output period/frequency and the output
voltage. For example:
Marker O/P Time Marker Period Deviation O/P Period
Style Amplitude Min Max Min Max Min Max
100mV - 500mV 450.46ps 50s -45% +45% 450.46ps 55s
1V 626.96ps 50s -45% +45% 909.10ps 55s
100mV - 1V 621.32ns 50s -45% +45% 900.91ns 55s
100mV - 1V 621.32ns 50s -45% +45% 900.91ns 55s
100mV - 1V 13.794ns 50s -45% +45% 20.000ns 55s
100mV - 1V 621.32ns 50s -45% +45% 20.000ns 55s
100mV - 1V 621.32ns 50s -45% +45% 20.000ns 55s
4.8-2 Section 4: Using the Model 9500B — Time Markers Function
Descriptions assume 9500B/1100
Provided they do not exceed the O/P Period
limits shown, the contributors have the
following adjustments (Scope mode):
a. Time Marker Period (adjustable sequence:
1-2-5 or 1-2-2.5-4-5; default 1.0000µs).
b. Percentage Deviation (a maximum range
of ±45.00% about the value of (
a), at a
resolution of four significant digits, with
two decimal places; default zero). Digit or
direct edit can be used.
c. Output Voltage (directly adjustable only
by preferred sequence between 100mV
and 1V; default 1.0000V).
4.8.4.2 Output Period Editing
The 'Digit' and 'Direct' editing processes follow
the same general rules as for editing voltages
described in paras 4.4.
Tab
Key and Cursors (Scope Mode)
Repeatedly pressing this key moves the cursor
from the default 'Time Marker' (period) to the
Deviation, then to the O/P Amplitude and back
to the 'Time Marker' position. The type of
cursor at each position indicates the type of
adjustment possible.
Time Marker (Scope Mode)
The type of cursor (barred) used for the 'Time
Marker' signifies that the value can be adjusted
only as a step-sequence value using the
keys. The
and
and
keys are
inactive.
From the default '1µs', the 'Time Marker' period
can be raised using the
key by increments
through 2µs, 5µs, 10µs and so on up to 50s,
providing that the other contributors will not
make the output period longer than 55s.
Similarly, the
key will reduce the 'Time
Marker' period down to 500ps, unless the output
voltage is greater than 500mV.
Square/Sine Waveform Changeover
The changeover from square to sine occurs at
a frequency of 111.101MHz (Period =
9.000819ns), chosen to avoid normal
calibration points.
Frequency Parameter Resolution Conflict
Due to resolution and the step sequence, some
periods cannot be converted exactly into
frequencies. In order to direct attention towards
period at any point at which its reciprocal
cannot be defined exactly, the 'Frequency'
parameter display is given an 'approximately
equal to' symbol (
).
Deviation (Scope and Direct Mode)
Note: In Time Markers function, the
Deviation operates on the Time Marker
interval, to modify the output 'Period' or
'Frequency', and
Amplitude, as in the other functions.
not
modify the O/P
The triangular type of cursor indicates that all
the cursor keys can be used.
The result of combining the Time Marker
interval and Deviation are shown as the value
of the output 'Period' or 'Frequency'. From the
default 00.00%, the deviation percentage can
be changed to any value within its resolution
between -45% and +45%, providing that the
Time Marker interval does not take the output
'Period' or 'Frequency' value out of its limits.
Output Voltage Amplitude (Scope and
Direct Mode)
The O/P Amplitude is directly adjustable, but
only in the step sequence defined by the
preferences (
Pref) facility. For this reason the
O/P Amplitude has a 'barred' cursor in both
Scope and Direct modes.
The default 1.0000Vp-p is the maximum output
available. The output voltage can be changed
to any step value between 100mV p-p and 1V
p-p. With Marker Style
, for sinewave
periods less than 909.09ps, the maximum output
voltage available is 500mVp-p.
Output Period/Frequency
From the default 1µs/1MHz, the output period/
frequency can be changed to any value within
its limits as shown in the table for the Marker
Styles.
4.8.4.3 Highlighted Marker Styles
Each marker style is available in a version
where each tenth marker is raised to higher
amplitude (highlighted) for Output Periods of
1µs and longer:
a.
Square/Sine: symbol for
highlighted style is
(does not
extend into Sine frequency band).
b.
c.
Pulse: symbol for highlighted
style is
.
Narrow Triangle: symbol for
highlighted style is
.
Limits for these highlighted versions are shown
in the table.
Final Width = 215mm
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Time Markers Function 4.8-3
Final Width = 215mm
4.8.5 Using the 9500B Time Markers Function to Calibrate the Time Base of a UUT Oscilloscope
4.8.5.1 Introduction
Two types of procedures for time base
calibration are given:
a. Using the 9500B as a fixed source, where
the oscilloscope can be adjusted or a
measurement can be taken;
b. Using the 9500B as an adjustable source,
reading oscilloscope deviations via the
9500B screen.
4.8.5.2 Interconnections
a. Use an active head to connect from the
required 9500B channel output to the input
of the UUT Signal Channel to be calibrated.
b. If a trigger is required, use an active head
(or trigger cable) to connect from the
required 9500B channel output to the input
of the UUT Trigger for the Channel to be
calibrated.
4.8.5.3 Common Setup
The following procedures assume that the
9500B instrument is in Manual Mode. It is also
assumed that the user will be familiar with the
methods of editing screen values. In the case
of difficulty, re-read the paragraphs earlier in
this Section 4.
9500B and UUT Oscilloscope Setup
1. Preparation
Ensure that both instruments are powered ON
and warmed up.
2. UUT 'Scope
Select the required function for time base
calibration.
3. 9500B
Ensure that the 9500B is in Time Markers
Function with Output OFF. If in any other
function, press the
the front panel.
key at the right of
4.8.5.4
UUT Scope — Time Base Calibration
using the 9500B as a Fixed Source
Sequence of Operations
Refer to the table or list of UUT Scope time
base calibration points in the UUT Oscilloscope
Manufacturer's Calibration Guide.
Follow the sequence of calibration stages as
directed by the guide, and carry out the
following operations (1) to (6) at each stage.
1. 9500B
Use the front panel controls to set the 9500B
output to the required channel, expected load
impedance, trigger channel, waveshape, period
and p-p voltage for the UUT 'Scope time base
cal point:
2. UUT 'Scope
a. Select the correct channel for the cal point.
b. Select the correct time base speed for the
cal point.
c. Select the correct amplitude range for the
cal point.
3. 9500B Set Output ON.
4. UUT 'Scope
a. Adjust the sweep speed and trigger level
for a stated display.
b. Observe and note the accuracy of marker
alignment, indicating any misadjustment
in the UUT's time base speed or linearity.
5. Calibration
a. If calibration adjustments for time base
speed and linearity are provided, adjust the
UUT's time base to be appropriate to the
settings on the 9500B screen, as detailed in
the UUT Oscilloscope Manufacturer's
Calibration Guide.
b. If no adjustment is provided on the UUT
'Scope, record the timebase condition at
the calibration point as detailed in the UUT
Oscilloscope Manufacturer's Calibration
Guide.
6. 9500B Set Output OFF.
4.8.5.5
UUT Scope — Time Base Calibration,
the 9500B as an Adjustable Source
Sequence of Operations
Refer to the table or list of UUT Scope time
base calibration points in the UUT Oscilloscope
Manufacturer's Calibration Guide.
Follow the sequence of calibration stages as
directed by the guide, and carry out the
following operations (1) to (6) at each stage.
1. 9500B
Use the front panel controls to set the 9500B
output to the required channel, expected load
impedance, trigger channel, waveshape, period
and p-p voltage for the UUT 'Scope time base
cal point:
2. UUT 'Scope
a. Select the correct channel for the cal point.
b. Select the correct time base speed for the
cal point.
c. Select the correct amplitude range for the
cal point.
3. 9500B Set Output ON.
4. UUT 'Scope
a. Adjust the sweep speed and trigger level
for a stated display.
b. Observe and note the accuracy of marker
alignment, indicating any misadjustment
in the UUT's time base speed or linearity.
5. Calibration
a. Use the 9500B Deviation control to slew
the 9500B Output period/frequency until
the UUT's alignment is appropriate to the
9500B settings, as detailed in the UUT
Scope Manufacturer's Calibration Guide.
b. Record the 9500B screen output voltage
and period/frequency as detailed in the
UUT Oscilloscope Manufacturer's
Calibration Guide.
6. 9500B Set Output OFF.
4.8-4 Section 4: Using the Model 9500B — Time Markers Function
Descriptions assume 9500B/1100
4.9 Auxiliary Functions
AUX IN
4.9.1 Introduction
This sub-section is a guide to selecting the
Auxiliary Functions. Eight functions are
available.
4.9.2 Selection of Auxiliary
Functions
4.9.2.1 'Aux' Key
Auxiliary functions are accessed by pressing
the 'Aux' key at the right of the
'OSCILLOSCOPE CALIBRATOR' panel.
4.9.2.2 Default Settings
At power-on, the system defaults into DC/
Square function and shows the DC/Square
function initial menu screen.. Each time the
'Aux' key is pressed, the system defaults to
show the Auxiliary menu screen:
Auxiliary
4.9.2.3 Function Icons
The following icons are used to access the
functions listed:
Sub Sect:
AUX IN
➞
Current;
Composite Video;
LF Linear Ramp;
Overload Pulse;
Zero Skew;
(Without Option 5, only one signal channel and
one trigger channel is available, so Zero Skew
operation is not possible.)
Auxiliary Input;
Input Resistance Measurement;
Input Capacitance Measurement;
Short/Open Output.
➞
Pulse Width
4.10
4.11
4.12
4.13
4.14
4.15
4.16
4.16
4.17
4.18
Final Width = 215mm
Functions
TODAY'S DATE TIME
➞
Descriptions assume 9500B/1100
➞
Section 4: Using the Model 9500B — Auxiliary Functions 4.9-1
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1
2
5
4.10 Current Function
4.10.1 Introduction
This sub-section is a guide to the use of the
9500B for generating square waves and DC
currents for use in calibrating oscilloscope
current probes.
For those users who require more detailed
instructions for interconnections, and
manipulating the front panel controls, refer to
sub-sections 4.2, 4.3 and 4.4. Section 4.10 is
divided into the following sub-sections:
4.10.1 Introduction .................................................. 4.10-1
4.10.2 Current Probe Accessory .............................. 4.10-1
4.10.3 Default Settings ............................................ 4.10-1
4.10.4 Menu Selections ........................................... 4.10-2
4.10.4.1 Retained Channel Memory ........... 4.10-2
4.10.4.2 Choosing a Waveshape ................ 4.10-2
4.10.4.3 DCI Selection ............................... 4.10-2
4.10.4.4 Current Selection Summary ......... 4.10-2
4.10.5 Current Operation ......................................... 4.10-2
4.10.5.1 Right Side Screen Keys -
Digit Edit...................................... 4.10-2
4.10.5.2 Right Side Screen Keys -
Direct Edit .................................... 4.10-3
4.10.5.3 Bottom Screen Keys -
Digit and Direct Edit ..................... 4.10-3
4.10.6 Square Operation .......................................... 4.10-3
4.10.6.1 Value Editing ................................ 4.10-3
4.10.6.2 Output Current Editing ................. 4.10-3
4.10.7 Using the 9500B Current (Square) Function to
Calibrate the Amplitude Response of a UUT
Oscilloscope ................................................. 4.10-4
4.10.7.1 Introduction.................................. 4.10-4
4.10.7.2 Interconnections........................... 4.10-4
4.10.7.3 Common Setup ............................ 4.10-4
4.10.7.4 UUT Scope - Amplitude Calibration
using the 9500B as a Fixed Source4.10-4
4.10.7.5 UUT Scope - Amplitude Calibration
using the 9500B as an Adjustable
Source.......................................... 4.10-5
4.10.8 DCI Operation ............................................... 4.10-5
4.10.8.1 Polarity......................................... 4.10-5
4.10.8.2 Value Editing ................................ 4.10-5
4.10.8.3 Output Current Editing ................. 4.10-5
4.10.9 Using the 9500B DCI Function to Calibrate the
DC-Coupled Amplitude Response
of a UUT Oscilloscope .................................. 4.10-6
4.10.9.1 Introduction.................................. 4.10-6
4.10.9.2 Interconnections........................... 4.10-6
4.10.9.3 Common Setup ............................ 4.10-6
4.10.9.4 UUT Scope - DC-Coupled Amplitude
Calibration using the 9500B as a Fixed
Source.......................................... 4.10-6
4.10.9.5 UUT Scope - DC-Coupled Amplitude
Calibration using the 9500B as an
Adjustable Source ........................ 4.10-7
4.10.2 Current Probe
Accessory
This sub-section describes the accessory which
is used to terminate the 9500B output, and
activate UUT Oscilloscope current probe.
The accessory consists of a BNC male
connector which is plugged into the BNC
output female socket on any model head. A
loop is connected between the BNC center and
shell, which is available for insertion into the
recess of an oscilloscope current probe. The
loop presents 50Ω loading to the head:
Fig. 4.10.1 Current Probe Accessory
With the 9500B 'Auxiliary' Current function
selected and output on, the output current in
the loop can be set to the UUT oscilloscope's
current probe calibration points, using 9500B
front panel controls.
4.10.3 Default Settings
When Manual mode is selected the system
defaults into DC/Square function and shows
the DC/Square function initial menu screen.
The Current function is accessed by first
pressing the 'Aux' key on the right of the
'OSCILLOSCOPE CALIBRATOR' panel,
then pressing the
right of the screen.
Whenever the Current menu screen is opened,
except on recovery from a standby period, it
will appear with the following default settings:
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
1.ØØ mA/div x4 = 4.ØØØØ mA
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
The above default screen has auto-selected the
symmetrical square waveform, as indicated by
the icon in the top left corner. Frequency is
variable between 10.000Hz and 100.00kHz.
Frequency has defaulted to 1kHz, deviation '∆'
to zero, and output current to 4.0000mAp-p.
The Duty Cycle is fixed at a nominal 50%.
WAVE
FORM
soft key on the top
= ØØ.ØØ %
= 4.ØØØØ mA
= 1.ØØØØ kHz
CHANNEL
SELECT
pk-pk
pk-pk
x 1Ø
÷ 1Ø
∆ = Ø
1.Ø
Final Width = 215mm
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Current Function 4.10-1
Final Width = 215mm
4.10.4 Menu Selections
Signal Channel selection, Trigger Channel
selection, Cable selection and Trigger Ratio all
operate in the same way as in DC/Square
function. Refer to paras 4.5.3.
Note: Without Option 5, only one signal
channel and one trigger channel is
available.
4.10.4.1 Retained Channel Memory
Refer to para 4.5.3.6.
4.10.4.2 Choosing a Waveshape
All waveshapes in this function can be selected
on a second menu screen. This is activated by
pressing the '
bottom row. The screen changes to show the
available waveforms:
1.ØØ mA/div x4 = 4.ØØØØ mA
O/P
TODAY'S DATE TIME
The WAVEFORM key label is highlighted to
indicate that waveform selection is available,
as is the presently-selected waveform icon.
The only square current waveform available is
the symmetrical version, so the others shown
on this screen are for DC current. Selecting
any of these three will return to the previous
screen, with the icon of the selected waveform
showing in the top left corner:
WAVEFORM' screen key on the
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
pk-pk
Deviation
Amplitude
Frequency
WAVE
FORM
= ØØ.ØØ %
= 4.ØØØØ mA
= 1.ØØØØ kHz
CHANNEL
SELECT
pk-pk
1
2
1.Ø
5
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
1.ØØ mA/div x4 = 4.ØØØØ mA
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
WAVE
FORM
= ØØ.ØØ %
= 4.ØØØØ mA
= 1.ØØØØ kHz
CHANNEL
SELECT
pk-pk
pk-pk
x 1Ø
÷ 1Ø
∆ = Ø
1
2
5
1.Ø
4.10.4.3 DCI Selection
Pressing one of the two DC keys, for example:
the
(DC Negative) key, will return to the
previous screen, with the DC Negative icon
showing in the top left corner. The parameters
listed on the screen will be changed to reflect
DC instead of Square:
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
1.ØØ mA/div x4 = 4.ØØØØ mA
Deviation
O/P
Amplitude
TODAY'S DATE TIME
WAVE
FORM
= ØØ.ØØ %
= +4.ØØØØ mA
CHANNEL
SELECT
x 1Ø
÷ 1Ø
∆ = Ø
1
2
5
1.Ø
4.10.4.4 Current Selection Summary
'DC' and 'Square' can be regarded as a combined
dual function, as each has a similar purpose,
and switching between the two is accomplished
by selection in a common 'Waveform' menu.
The parametric differences are evident once
the appropriate waveform soft key has been
pressed.
Detailed operation follows below:
paras 4.10.5 (Current Operation)
paras 4.10.6/7 (Square Operation)
paras 4.10.8/9 (DCI Operation).
4.10.5 Current Operation
4.10.5.1 Right Side Screen Keys —
Digit Edit
Keys operate on the value marked by the
cursor. The key labels will change depending
on the cursor position, as indicated.:
i. Cursor on Units/div:
X10 Multiplies the Units/div by ten.
÷10 Divides the Units/div by ten.
∆ = Ø Toggles the Deviation value
between the marked value and zero.
Toggles the value between positive
and negative (DC only).
ii. Cursor on Multiplier:
∆ = Ø Toggles the Deviation value
between the marked value and zero.
Toggles the value between positive
and negative (DC only).
iii. Cursor on Deviation:
∆ = Ø Toggles the Deviation value
between the marked value and zero.
∆% ∆A
∆%
iv. Cursor on Frequency/Period:
X10 Multiplies the marked value by ten.
÷ 10 Divides the marked value by ten.
∆ = Ø Toggles the Deviation value
Press to set Deviation value in
absolute units.
Press to set Deviation value in
∆A
percent of set value.
between the marked value and zero.
Press to change display from
1
Frequency to Period (not DC).
Press to change display from Period
1
to Frequency (not DC).
4.10-2 Section 4: Using the Model 9500B — Current Function
Descriptions assume 9500B/1100
4.10.5.2 Right Side Screen Keys —
Direct Edit
Right side screen keys operate on the value in
the edit box, and acting in place of the ↵ key,
exit from Direct Edit back to Digit Edit; then
set the value as evaluated in the box:
Cursor on Deviation:
% Evaluates the number in the box in
Deviation Percentage.
A Evaluates the number in the box in
Amps.
mA Evaluates the number in the box in
Milliamps.
µ A Evaluates the number in the box in
Microamps.
4.10.5.3 Bottom Screen Keys —
Digit and Direct Edit
WAVE Provides a second menu screen
FORM for selection between three Square
waveshapes or ±DC.
(paras 4.10.4.2-3).
CHANNEL Permits the screen signal setup to
SELECT be routed to any of the five heads,
allowing selection of trigger
channel, trigger ratio and cable
channel (paras 4.5.3).
1
5
1
5
Press to select Direct Mode (paras
2
1.Ø
4.4.4/5).
Press to select Scope Mode (setting
2
1.Ø
the step sequence to '1, 2, 5' or
'1, 2, 2.5, 4, 5' as chosen using the
Preferences key) (paras 4.4.1/2).
4.10.6 Square Operation
4.10.6.1 Value Editing
Amplitude
At maximum and minimum output currents,
the screen settings of the contributors' values
(units/division, scaling multiplier and
deviation) are limited by the output current
itself. For example:
Contributor Limits
Minimum Maximum
Output Current 88.8µA p-p 111.2mA p-p
Limit
Units/Division 20µA/div 50mA/div
Scaling Multiplier 1 10
Deviation -11.20% +11.20%
Provided they do not exceed the output current
limits shown, the contributors have the
following adjustments (Scope mode):
a. Units/Division in Amps/division
(adjustable sequence: 1-2-5 or 1-2-2.5-45; default 1mA).
b. Scaling Multiplier (adjustable through
integers 1 to 10; default 4).
c. Percentage Deviation (a maximum range
of ±11.20% about the value of (
a resolution of four significant digits, with
two decimal places; default zero). Digit or
direct edit can be used.
d. Output Current (adjustable only by
manipulation of (
a), (b) and (c); default
4.0000mA).
a) x (b), at
4.10.6.2 Output Current Editing
The 'Digit' and 'Direct' editing processes follow
the same general rules as for editing currents
described in paras 4.4.
Tab
Key and Cursors (Scope Mode)
Repeatedly pressing this key moves the cursor
from the default units/division to the Multiplier,
then to the Deviation and back to the units/
division. The type of cursor at each position
indicates the type of adjustment possible.
Units/Division (Scope Mode)
The type of cursor (barred) used for the units/
division signifies that the value can be adjusted
only as a step-sequence value using the
keys. The
and
and
keys are
inactive.
From the default '1mA/div', the value can be
raised using the
key by increments through
2mA/div, 5mA/div, 10mA/div and so on up to
50mA/div, providing that the other contributors
will not take the output current value above
111.2mA p-p. Similarly, the
key will
reduce the Units/Division down to 20µA/div,
unless the output current would fall below
88.8µA p-p.
Multiplier (Scope Mode)
Again the
and
keys are inactive.
From the default 'x 4', the value can be changed
using the
and
keys, by single integer
increments to values between 1 and 10,
providing that the other contributors do not
take the output current value out of its limits.
The product of the units/division and multiplier
are shown on the right side of the '=' sign.
continued overleaf
Final Width = 215mm
→
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Current Function 4.10-3
Final Width = 215mm
4.10.6 Square Operation (Contd.) 4.10.7 Using the 9500B Current (Square) Function to Calibrate the
Pulse Response of a UUT Oscilloscope Current Probe
4.10.6.2
Deviation (Scope and Direct Mode)
The triangular type of cursor indicates that all
the cursor keys can be used.
From the default 00.00%, the deviation
percentage can be changed to any value within
its resolution between -11.20% and +11.20%,
providing that the other contributors do not
take the output current value out of its limits.
The result of combining the units/division,
multiplier and deviation are shown as the value
of 'O/P Amplitude p-p'.
Output Current (Scope and Direct Mode)
The O/P Amplitude is only adjustable by means
of its contributors.
From the default 4.0000mA p-p, the output
current can be changed to any value within its
resolution from 88,8µA p-p to 111.2mA p-p.
Frequency (Scope and Direct Mode)
From the default 1kHz, the output frequency
can be changed to any value within its resolution
between 10Hz and 100kHz.
Output Current Editing
(Contd.)
4.10.7.1 Introduction
Two types of procedures for amplitude
calibration are given:
a. Using the 9500B as a fixed source, where
the oscilloscope can be adjusted;
b. Using the 9500B as an adjustable source,
reading oscilloscope deviations via the
9500B screen.
4.10.7.2 Interconnections
a. Use the appropriate active head and current
probe accessory to connect from the
required 9500B signal output channel to
the UUT current probe.
b. If a trigger is required, use the appropriate
active head (or trigger cable) to connect
from the required 9500B channel output to
the scope input.
4.10.7.3 Common Setup
The following procedures assume that the
9500B instrument is in Manual Mode. It is also
assumed that the user will be familiar with the
methods of editing screen values. In the case
of difficulty, re-read the paragraphs earlier in
this Section 4.
9500B and UUT Oscilloscope Setup
1. Preparation
Ensure that both instruments are powered ON
and warmed up.
2. UUT Probe
Select the required function for probe pulse
response calibration.
3. 9500B
Ensure that the 9500B is in Current Function
with Output OFF. If in any other function,
press the 'Aux' key on the right of the
'OSCILLOSCOPE CALIBRATOR' panel,
then the
the screen.
soft key on the top right of
4.10.7.4
UUT Current Probe — Pulse Response
Calibration using the 9500B as a Fixed
Source
Sequence of Operations
Refer to the table or list of UUT Oscilloscope
amplitude calibration points in the UUT
Oscilloscope Manufacturer's Calibration
Guide.
Follow the sequence of calibration stages as
directed by the guide, and carry out the
following operations (1) to (6) at each stage.
1. 9500B
Use the front panel controls to set the 9500B
Output to the required square wave p-p current
and frequency for the UUT 'Scope amplitude
cal point:
2. UUT 'Scope
a. Select the correct channel for the cal point.
b. Select the correct range for the cal point.
3. 9500B Set Output ON.
4. UUT 'Scope
a. Adjust the sweep speed and trigger level
for a stable display.
b. Observe and note the amplitude response.
5. Calibration
a. If a calibration adjustment is provided,
adjust the probe's response to be appropriate
to the settings on the 9500B screen, as
detailed in the UUT Oscilloscope
Manufacturer's Calibration Guide.
b. If no adjustment is provided , record the
probe's response at the calibration point as
detailed in the UUT Oscilloscope
Manufacturer's Calibration Guide.
6. 9500B Set Output OFF.
4.10-4 Section 4: Using the Model 9500B — Current Function
Descriptions assume 9500B/1100
4.10.7.5
UUT Current Probe — Pulse Response
Calibration using the 9500B as an
Adjustable Source
Sequence of Operations
Refer to the table or list of UUT Oscilloscope
amplitude calibration points in the UUT
Oscilloscope Manufacturer's Calibration
Guide.
Follow the sequence of calibration stages as
directed by the guide, and carry out the
following operations (1) to (6) at each stage.
1. 9500B
Use the front panel controls to set the 9500B
Output to the required square wave p-p current
and frequency for the UUT 'Scope amplitude
cal point:
2. UUT 'Scope
a. Select the correct channel for the cal point.
b. Select the correct range for the cal point.
3. 9500B Set Output ON.
4. UUT 'Scope
a. Adjust the sweep speed and trigger level
for a stable display.
b. Observe and note the amplitude response.
5. Calibration
a. Use the 9500B Deviation control to slew
the 9500B Output current until the UUT's
response is appropriate to the 9500B
settings, as detailed in the UUT
Oscilloscope Manufacturer's Calibration
Guide.
b. Record the 9500B screen output current as
detailed in the UUT Oscilloscope
Manufacturer's Calibration Guide.
6. 9500B Set Output OFF.
4.10.8 DCI Operation
4.10.8.1 Polarity
Waveform Selection Screen
From the power-on default, pressing the
WAVEFORM screen key transfers to the
waveform menu screen:
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
1.ØØ mA/div x4 = 4.ØØØØ mA
Deviation
O/P
Amplitude
Frequency
TODAY'S DATE TIME
Both polarities of DC Current output are listed
merely as different waveforms. As an example,
pressing the
above will present the DC function screen,
showing negative values selected (of course,
the frequency parameter has disappeared from
the screen):
OFF
= ØØ.ØØ %
= 4.ØØØØ mA
= 1.ØØØØ kHz
WAVE
FORM
key from the setup shown
SIGNAL CH1 5ØΩ
TRIGGER NONE
1.ØØ mA/div x4 = 4.ØØØØ mA
Deviation
O/P
Amplitude
TODAY'S DATE TIME
Once into DC function, it is not necessary to
change the waveform to change polarity.
Pressing the
positive and negative DC Current. The polarity
selection is shown by the function icon in the
top left corner, confirmed by the
the O/P Amplitude value.
= ØØ.ØØ %
= -4.ØØØØ mA
WAVE
FORM
+/- screen key toggles between
pk-pk
pk-pk
CHANNEL
SELECT
CHANNEL
SELECT
+ or - sign on
1
2
5
x 1Ø
÷ 1Ø
∆ = Ø
1
2
5
1.Ø
1.Ø
4.10.8.2 Value Editing
Amplitude
At maximum and minimum output currents,
the screen settings of the contributors' values
(units/division, scaling multiplier and
deviation) are limited by the output current
itself. For example:
Contributor Limits
Output Current ±88.8µA p-p ±111.2mA p-p
Limit
Units/Division 20µA/div 50mA/div
Scaling Multiplier 1 10
Deviation -11.20% +11.20%
Minimum Maximum
Provided they do not exceed the output current
limits shown, the contributors have the
following adjustments (Scope mode):
a. Units/Division in Volts/division
(adjustable sequence: 1-2-5 or 1-2-2.5-45; default 1mA).
b. Scaling Multiplier (adjustable through
integers 1 to 10; default 4).
c. Percentage Deviation (a maximum range
of ±11.20% about the value of (
a) x (b), at
a resolution of four significant digits, with
two decimal places; default zero). Digit or
direct edit can be used.
d. Output Current (adjustable in digit edit
only, by manipulation of (
a), (b) and (c);
default 4.0000mA).
4.10.8.3 Output Current Editing
The 'Digit' and 'Direct' editing processes follow
the same rules as for editing square waves
(refer to para 4.10.6.2). Obviously no
frequency adjustment is present, and polarity
is changed as described in para 4.10.8.1.
Final Width = 215mm
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Current Function 4.10-5
Final Width = 215mm
4.10.9
Using the 9500B DCI Function to Calibrate the Amplitude Response of
a UUT Oscilloscope Current Probe
4.10.9.1 Introduction
Two types of procedures for amplitude
calibration are given:
a. Using the 9500B as a fixed source, where
the oscilloscope can be adjusted;
b. Using the 9500B as an adjustable source,
reading oscilloscope deviations via the
9500B screen.
4.10.9.2 Interconnections
a. Use the appropriate active head and current
probe accessory to connect from the
required 9500B signal output channel to
the current probe at the UUT input.
b. If a trigger is required, use the appropriate
active head (or trigger cable) to connect
from the required 9500B channel output to
the UUT Trigger input.
4.10.9.3 Common Setup
The following procedures assume that the
9500B instrument is in Manual Mode. It is also
assumed that the user will be familiar with the
methods of editing screen values. In the case
of difficulty, re-read the paragraphs earlier in
this Section 4.
9500B and UUT Oscilloscope Setup
1. Preparation
Ensure that both instruments are powered ON
and warmed up.
2. UUT Probe
Select the required function for pulse response
calibration.
3. 9500B
Ensure that the 9500B is in Current Function
with Output OFF. If in any other function,
press the 'Aux' key on the right of the
'
OSCILLOSCOPE CALIBRATOR
the
screen. Select
soft key on the top right of the
or as required.
' panel, then
4.10.9.4
UUT Current Probe — Amplitude
Calibration using the 9500B as a Fixed
Source
Sequence of Operations
Refer to the table or list of UUT Oscilloscope
amplitude calibration points in the UUT Scope
Manufacturer's Calibration Guide.
Follow the sequence of calibration stages as
directed by the guide, and carry out the
following operations (1) to (8) at each stage.
1. 9500B
Use the front panel controls to set the 9500B
Output to the required DC current and polarity
for the UUT Probe amplitude cal point:
2. UUT 'Scope
a. Select the correct channel for the cal point.
b. Select 'DC-Coupled', if required.
c. Select the correct range for the cal point.
3. 9500B
Ensure that Output is OFF.
4. UUT 'Scope
a. Set the Y controls to place the trace on
graticule zero.
5. 9500B
Set Output ON.
6. UUT 'Scope
a. Auto-trigger the oscilloscope or use the
100Hz Trigger from the 9500B. Adjust
the UUT for a stable display.
b. Observe and note the DC level change
from graticule zero.
7. Calibration
a. If a calibration adjustment is provided,
adjust the UUT probe's amplitude response
to be appropriate to the settings on the
9500B screen, as detailed in the UUT Scope
Manufacturer's Calibration Guide.
b. If no adjustment is provided, record the
probe's amplitude response at the
calibration point as detailed in the UUT
Scope Manufacturer's Calibration Guide.
8. 9500B Set Output OFF.
4.10-6 Section 4: Using the Model 9500B — Current Function
Descriptions assume 9500B/1100
4.10.9.5
UUT Current Probe — Amplitude
Calibration using the 9500B as an
Adjustable Source
Sequence of Operations
Refer to the table or list of UUT Oscilloscope
amplitude calibration points in the UUT Scope
Manufacturer's Calibration Guide.
Follow the sequence of calibration stages as
directed by the guide, and carry out the
following operations (1) to (8) at each stage.
1. 9500B
Use the front panel controls to set the 9500B
Output to the required DC current and polarity
for the UUT Probe amplitude cal point:
2. UUT 'Scope
a. Select the correct channel for the cal point.
b. Select 'DC-Coupled', if required.
c. Select the correct range for the cal point.
3. 9500B
Ensure that Output is OFF.
4. UUT 'Scope
a. Set the Y controls to place the trace on
graticule zero.
5. 9500B
Set Output ON.
6. UUT 'Scope
a. Auto-trigger the oscilloscope or use the
100Hz Trigger from the 9500B. Adjust
the UUT for a stable display.
b. Observe and note the DC level change
from graticule zero.
7. Calibration
a. Use the 9500B Deviation control to slew
the 9500B Output current until the UUT
probe's response is appropriate to the 9500B
settings, as detailed in the UUT Scope
Manufacturer's Calibration Guide.
b. Record the 9500B screen output current as
detailed in the UUT Scope Manufacturer's
Calibration Guide.
8. 9500B Set Output OFF.
Final Width = 215mm
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Current Function 4.10-7
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4.11 Composite Video Function
4.11.1 Introduction
This sub-section is a guide to the use of the
9500B to generate composite video for video
trigger sensitivity calibration of oscilloscopes.
For those users who require more detailed
instructions for interconnections, and
manipulating the front panel controls, refer to
sub-sections 4.2, 4.3 and 4.4. Section 4.11 is
divided into the following sub-sections:
4.11.1 Introduction .................................................. 4.11-1
4.11.2 Signals and Triggers .................................... 4.11-1
4.11.3 Default Settings ............................................ 4.11-1
4.11.4 Menu Selections ........................................... 4.11-1
4.11.4.1 Retained Channel Memory ........... 4.11-1
4.11.4.2 Right Side Screen Keys ................ 4.11-1
4.11.4.3 Bottom Screen Keys ..................... 4.11-1
4.11.5 Composite Video Function Operation ........... 4.11-2
4.11.5.1 Value Editing................................ 4.11-2
4.11.6 Using the 9500B Composite Video Function to
Calibrate Video Trigger Sensitivity of a UUT
Oscilloscope................................................. 4.11-2
4.11.6.1 Introduction.................................. 4.11-2
4.11.6.2 Interconnections........................... 4.11-2
4.11.6.3 Calibration Procedure .................. 4.11-2
4.11.2 Signals and Triggers
The composite video signal generated by the
9500B is standard 625 line or 525 line video
with both frame and composite synch pulses,
and an inverted version of the composite
waveform is available. As shown by the screen
icon, three luminance levels are available.
The 9500B trigger channel can output either
composite or frame synchronizing pulses,
without the video. All variants can be selected
from the front panel.
4.11.3 Default Settings
When Manual mode is selected the system
defaults into DC/Square function and shows
the DC/Square function initial menu screen.
The Composite Video function is accessed by
first pressing the 'Aux' key on the right of the
'OSCILLOSCOPE CALIBRATOR' panel,
then pressing the
soft key on the right
of the screen.
Whenever the
menu screen is opened,
except on recovery from a standby period, it
will appear with the following default settings:
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
O/P
Amplitude
= 1.ØØ V
Luminance Level = White
TODAY'S DATE TIME
pk-pk
CHANNEL
SELECT
625
50Hz
TRIG
COMP
525
60Hz
TRIG
FRAME
The above default screen has auto-selected
625 lines / 50Hz and triggers will be from
composite video. Amplitude has defaulted to
a luminance level of 'White' at 1.0V p-p.
4.11.4 Menu Selections
Signal Channel selection, Trigger Channel
selection and Cable selection all operate in the
same way as in DC/Square function. Trigger
Ratio is not available in Composite Video
function. Refer to paras 4.5.3.
Note: Without Option 5, only one signal
channel and one trigger channel is
available.
4.11.4.1 Retained Channel Memory
Refer to para 4.5.3.6.
4.11.4.2 Right Side Screen Keys
The cursor is available only on the Luminance
Level parameter (Scope mode). Three
luminance levels are defined (para 4.11.5.1).
The key labels will change depending on other
key selections:
Default Screen:
Toggles between upright and
inverted composite video.
625
525
50Hz
Currently 50Hz line supply with
60Hz
625 raster lines. Press to select for
60Hz line supply with 525 raster
lines.
625
525
50Hz
Currently 60Hz line supply with
60Hz
525 raster lines. Press to select for
50Hz line supply with 625 raster
lines.
TRIG
TRIG
COMP
Currently Composite synch pulses
FRAME
on the Trigger channel. Press to
output Frame synch pulses on the
Trigger channel.
TRIG
TRIG
COMP
Currently Frame synch pulses on
FRAME
the Trigger channel. Press to output
Composite synch pulses on the
Trigger channel.
4.11.4.3 Bottom Screen Keys
CHANNEL Permits the screen signal setup to
SELECT be routed to any of the five heads,
allowing selection of trigger
channel and cable channel (paras
4.5.3).
Final Width = 215mm
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Composite Video Function 4.11-1
Final Width = 215mm
4.11.5 Composite Video
Function Operation
4.11.5.1 Value Editing
Amplitude
The three luminance levels give amplitudes as
follows:
White (1.0Vp-p),
Mid-grey (0.7Vp-p)
Black (0.3Vp-p).
Video Inversion
Composite Video can be toggled between
upright and inverse, using the +/- screen key.
No further adjustment is available.
Video Standards
Composite Video can be switched between
625 lines/50Hz and 525 lines/60Hz, using the
625
525
screen key.
50Hz
60Hz
Trigger Interval Selection
Either composite or frame synch can be selected
as trigger on the assigned trigger channel,
using the screen key. The +/- key
toggles the synch polarity as part of the
composite video.
TRIG
COMP
TRIG
FRAME
4.11.6 Using the 9500B Levelled Composite Video Function to
Calibrate Video Trigger Sensitivity of a UUT Oscilloscope
4.11.6.1 Introduction
As the 9500B composite video amplitude
variation is limited, and trigger outputs are not
variable, except as described in paras 4.11.5.1,
procedures for operating the 9500B are
essentially simple:
4.11.6.2 Interconnections
a. Use an active head to connect from the
required 9500B channel output to the video
input of the UUT Signal Channel to be
calibrated.
b. If a trigger is required, use an active head
(or trigger cable) to connect from the
required 9500B channel output to the input
of the UUT Trigger for the Channel to be
calibrated.
4.11.6.3 Calibration Procedure
The following procedure assumes that the
9500B instrument is in Manual Mode. It is also
assumed that the user will be familiar with the
methods of using front panel controls. In the
case of difficulty, re-read the paragraphs
earlier in this Section 4.
9500B and UUT Oscilloscope Setup
1. Preparation
Ensure that both instruments are powered ON
and warmed up.
2. UUT 'Scope
Select the required function for video and
trigger calibration.
3. 9500B
Ensure that the 9500B is in Composite Video
Function with Output OFF. If in any other
function, press the 'Aux' key on the right of the
'OSCILLOSCOPE CALIBRATOR' panel,
then the
soft key on the right of the
screen.
Sequence of Operations
Refer to the table or list of UUT Oscilloscope
calibration points in the UUT Oscilloscope
Manufacturer's Calibration Guide.
Follow the sequence of calibration stages as
directed by the guide, and carry out the
following operations (1) to (6) at each stage.
1. 9500B
Use the front panel controls to set the 9500B to
output the required Luminance level,
Composite Video and line standard for the
UUT 'Scope cal point:
2. UUT 'Scope
a. Select the correct channel for the cal point.
b. Select the correct range for the cal point.
c. Select the correct presentation setup for
the cal point.
3. 9500B Set Output ON.
4. UUT 'Scope
Verify stable display from TV trigger in
accordance with the UUT Oscilloscope
Manufacturer's Calibration Guide.
6. 9500B Set Output OFF.
4.11-2 Section 4: Using the Model 9500B — Composite Video Function
Descriptions assume 9500B/1100
4.12 Linear Ramp Function
4.12.1 Introduction
This sub-section is a guide to the use of the
9500B for generating Linear Ramps for error
code detection and trigger level marker
calibrations.
For those users who require more detailed
instructions for interconnections, and
manipulating the front panel controls, refer to
sub-sections 4.2, 4.3 and 4.4. Section 4.12 is
divided into the following sub-sections:
4.12.1 Introduction .................................................. 4.12-1
4.12.2 Default Settings ............................................ 4.12-1
4.12.3 Menu Selections ........................................... 4.12-1
4.12.3.1 Retained Channel Memory ........... 4.12-1
4.12.3.2 Scope Mode Only ........................ 4.12-1
4.12.3.3 Right Side Screen Keys ................ 4.12-1
4.12.3.4 Bottom Screen Keys ..................... 4.12-1
4.12.4 Linear Ramp Operation ................................. 4.12-1
4.12.4.1 Value Editing................................ 4.12-1
4.12.5 Using the 9500B Linear Ramp Function for
Error Code Detection and
Trigger Level Marker Checks ........................ 4.12-2
4.12.5.1 Introduction.................................. 4.12-2
4.12.5.2 Interconnections........................... 4.12-2
4.12.5.3 9500B and UUT Oscilloscope
Setup............................................ 4.12-2
4.12.5.4 Error Code Detection —
Sequence of Operations ............... 4.12-2
4.12.5.5 Trigger Level —
Sequence of Operations ............... 4.12-2
4.12.2 Default Settings
When Manual mode is selected the system
defaults into DC/Square function and shows
the DC/Square function initial menu screen.
The Linear Ramp function is accessed by first
pressing the 'Aux' key on the right of the
'OSCILLOSCOPE CALIBRATOR' panel,
then pressing the soft key on the right
of the screen.
Whenever the Linear Ramp menu screen is
opened, except on recovery from a standby
period, it will appear with the following default
settings:
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
x 1Ø
÷ 1Ø
CHANNEL
SELECT
pk-pk
TRIG
START
TRIG
MID
O/P
Amplitude
Ramp Time
TODAY'S DATE TIME
= 1.ØØØØ V
= 1.ØØØØ s
The 9500B has auto-selected a Ramp Time of
1.0000s. Trigger is auto-selected: 'TRIG
START', not 'TRIG MID'. O/P Amplitude is
fixed at 1.0000V.
4.12.3 Menu Selections
Signal Channel selection, Trigger Channel
selection, Cable selection and Trigger Ratio all
operate in the same way as in DC/Square
function. Refer to paras 4.5.3.
Note: Without Option 5, only one signal
channel and one trigger channel is
available.
4.12.3.1 Retained Channel Memory
Refer to para 4.5.3.6.
4.12.3.2 Scope Mode Only
The function operates only in Scope mode.
Ramp Time is the only signal variable,
operating on a step sequence as selected in
'
Pref'. Refer to Section 3, sub-section 3.3.
4.12.3.3 Right Side Screen Keys
x 1Ø
Increases Ramp Time by a factor of
10 within max. and min. limits.
÷ 1Ø
Decreases Ramp Time by a factor
of 10 within max. and min. limits.
TRIG
TRIG
START
UUT Scope trigger currently at start
MID
code. Press to provide trigger at
center code.
TRIG
TRIG
START
UUT Scope trigger currently at
MID
center code. Press to provide trigger
at start code.
4.12.3.4 Bottom Screen Keys
CHANNEL Permits the screen signal setup to
SELECT be routed to any of the five heads,
allowing selection of trigger
channel, trigger ratio, cable channel
and expected load (paras 4.5.3).
4.12.4 Linear Ramp Operation
4.12.4.1 Value Editing
Amplitude
Amplitude is fixed at 1.0000V pk-pk and cannot
be edited.
Bias
The waveform is symmetrical about ground.
Ramp Time
From the default 1s, the ramp time can be
changed in decades from 1ms to 1s.
Waveform Period
The ramp times are part of waveforms with the
following periods:
Ramp Time Waveform Period
1s 3s
100ms 300ms
10ms 30ms
1ms 3ms
Final Width = 215mm
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Linear Ramp Function 4.12-1
Final Width = 215mm
4.12.5 Using the 9500B Linear Ramp Function for Error Code
Detection and Trigger Level Marker Checks
4.12.5.1 Introduction
The type of procedure, for generating Linear
Ramps for error code detection and trigger
level marker calibrations, uses the 9500B as a
fixed source.
4.12.7.2 Interconnections
a. Use an active head to connect from the
required 9500B signal output channel to
the UUT signal input channel.
b. If a trigger is required, use an active head
(or trigger cable) to connect from the
required 9500B channel output to the UUT
Trigger input.
4.12.5.3 9500B and UUT
Oscilloscope Setup
The following procedures assume that the
9500B instrument is in Manual Mode. It is also
assumed that the user will be familiar with the
methods of editing screen values. In the case
of difficulty, re-read the paragraphs earlier in
this Section 4.
1. Preparation
Ensure that both instruments are powered ON
and warmed up.
2. UUT 'Scope
Select the required function for pulse response
calibration.
3. 9500B
Ensure that the 9500B is in Linear Ramp
function with Output OFF. If in any other
function, press the 'Aux' key on the right of the
'OSCILLOSCOPE CALIBRATOR' panel,
then the
screen.
soft key on the right of the
4.12.5.4 Error Code Detection —
Sequence of Operations
Refer to the table or list of UUT Oscilloscope
test points in the UUT Oscilloscope
Manufacturer's Test Guide.
Follow the sequence of test stages as directed
by the guide, and carry out the following
operations (1) to (6) at each stage.
1. 9500B
Select the required channel and use the front
panel controls to set the 9500B Output to the
required trigger point, ramp time and expected
load for the UUT 'Scope test point:
2. UUT 'Scope
a. Select the correct channel for the test point.
b. Select the correct range for the test point.
3. 9500B Set Output ON.
4. UUT 'Scope
a. Adjust the sweep speed and trigger level
for a stable display.
5. Error Code Check
b. Observe and record the UUT response to
the codes at the test point, as detailed in the
UUT Oscilloscope Manufacturer's Test/
Calibration Guide.
6. 9500B Set Output OFF.
4.12.5.5 Trigger Level —
Sequence of Operations
Refer to the table or list of UUT Oscilloscope
test/calibration points in the UUT Oscilloscope
Manufacturer's Test Guide.
Follow the sequence of test stages as directed
by the guide, and carry out the following
operations (1) to (6) at each stage.
1. 9500B
Select the required channel and use the front
panel controls to set the 9500B Output to the
required trigger point, ramp time and expected
load for the UUT 'Scope test point:
2. UUT 'Scope
a. Select the correct channel for the test point.
b. Select the correct range for the test point.
3. 9500B Set Output ON.
4. UUT 'Scope
a. Adjust the sweep speed and trigger level
for a stable display.
5. Trigger Level Marker Check
a. If a trigger level calibration is provided,
adjust the UUT's trigger response to the
ramp to be appropriate to the settings on
the 9500B screen, as detailed in the UUT
Oscilloscope Manufacturer's Test Guide.
b. If no adjustment is provided on the UUT
'Scope, record its trigger response at the
test point as detailed in the UUT
Oscilloscope Manufacturer's Test Guide.
6. 9500B Set Output OFF.
4.12-2 Section 4: Using the Model 9500B — Linear Ramp Function
Descriptions assume 9500B/1100
4.13 Overload Pulse Function
4.13.1 Introduction
This sub-section is a guide to the use of the
9500B for generating Overload Pulses for use
in testing oscilloscope 50Ω terminator
Protection.
For those users who require more detailed
instructions for interconnections, and
manipulating the front panel controls, refer to
sub-sections 4.2, 4.3 and 4.4. Section 4.13 is
divided into the following sub-sections:
4.13.1 Introduction .................................................. 4.13-1
4.13.2 Overload Protection Test .............................. 4.13-1
4.13.3 Default Settings ............................................ 4.13-1
4.13.4 Menu Selections ........................................... 4.13-1
4.13.4.1 Retained Channel Memory ........... 4.13-1
4.13.5 Overload Pulse Operation ............................. 4.13-1
4.13.5.1 Right Side Screen Keys -
Digit Edit ...................................... 4.13-1
4.13.5.2 Right Side Screen Keys -
Direct Edit .................................... 4.13-1
4.13.5.3 Bottom Screen Keys -
Digit and Direct Edit ..................... 4.13-1
4.13.5.4 Value Editing................................ 4.13-2
4.13.5.5 Overload Pulse Editing................. 4.13-2
4.13.6 Using the 9500B to Test the Overload Response
of a UUT Oscilloscope .................................. 4.13-2
4.13.6.1 Introduction.................................. 4.13-2
4.13.6.2 Interconnections........................... 4.13-2
4.13.6.3 9500B and UUT Scope Setup....... 4.13-2
4.13.6.4 Sequence of Operations ............... 4.13-2
4.13.2 Overload Protection Test
Some oscilloscope manufacturers protect the
internal 50Ω terminator with a voltage or
thermal detector.
Verification of the protection function requires
limited-duration application of overload, during
which the protection should react and opencircuit the 50Ω terminator.
With the 9500B 'Auxiliary' Overload Pulse
function selected, the Overload Pulse can be
set to the UUT oscilloscope's overload test
requirements, using 9500B front panel controls.
The pulse is triggered as a single event, and
cannot be repeated at intervals less than 3
seconds. Sync or 100Hz triggers are provided
if required.
4.13.3 Default Settings
When Manual mode is selected the system
defaults into DC/Square function and shows
the DC/Square function initial menu screen.
The Overload Pulse function is accessed by
first pressing the 'Aux' key on the right of the
'OSCILLOSCOPE CALIBRATOR' panel,
then pressing the soft key on the right
of the screen.
Caution: The ! symbol indicates that care
must be taken when applying the overload
pulse to UUT oscilloscope inputs.
Whenever the Overload Pulse menu screen is
opened, except on recovery from a standby
period, it will appear with the following default
settings:
SIGNAL CH1 5ØΩ
OFF
TRIGGER NONE
Amplitude
Pulse Energy
= 2Ø.Ø V
= Ø1.6 J
Power In 50Ω = 8.ØØØØ W
Duration
TODAY'S DATE TIME
= 2ØØ.ØØ ms
CHANNEL
SELECT
The above default screen has auto-selected the
positive pulse waveform, as indicated by the
icon in the top left corner. Amplitude is
variable between 5 Volts and 20 Volts (default).
Pulse Energy is variable between 1.6 Joules
(default) and 50 Joules. Power into 50Ω and
Pulse Duration are calculated from the voltage
and energy settings.
TRIG
PULSE
AUTO
TRIG
4.13.4 Menu Selections
Signal Channel selection, Trigger Channel
selection, Cable selection and Trigger Ratio all
operate in the same way as in DC/Square
function. Refer to paras 4.5.3.
Note: Without Option 5, only one signal
channel and one trigger channel is
available.
4.13.4.1 Retained Channel Memory
Refer to para 4.5.3.6.
4.13.5
Overload Pulse Operation
4.13.5.1 Right Side Screen Keys —
Digit Edit
Keys operate on the value marked by the
cursor. The key labels do not change, regardless
of the cursor position.:
Toggles the value between positive
and negative pulses.
TRIG Press to trigger a single shot of
PULSE the specified pulse output.
No further pulse can be triggered
within three seconds, otherwise a
screen message will appear.
4.13.5.2 Right Side Screen Keys —
Direct Edit
Right side screen keys operate on the value in
the edit box, and acting in place of the ↵ key,
exit from Direct Edit back to Digit Edit; then
set the value as evaluated in the box:
a. Cursor on Amplitude:
V Evaluates the number in the box in
Volts.
b. Cursor on Pulse Energy:
J Evaluates the number in the box in
Joules.
4.13.5.3 Bottom Screen Keys —
Digit and Direct Edit
CHANNEL Permits the screen signal setup to
SELECT be routed to any of the five heads,
allowing selection of trigger
channel, trigger ratio and cable
channel (paras 4.5.3).
AUTO Produces a train of triggers at 100Hz
TRIG to trigger the UUT oscilloscope
continuously.
continued overleaf
Final Width = 215mm
→
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Overload Pulse Function 4.13-1
Final Width = 215mm
4.13.5 Overload Pulse
Operation (Contd.)
4.13.5.4 Value Editing
Overload Protection
Different oscilloscope manufacturers have
different ways of defining the overload which
will activate their protection system.
For example, into 50Ω, the two specifications
±
20V for 200ms and 1.6J at a power of 8W are
equivalent.
Normally, where voltage and time are specified,
the voltage will be set and the energy adjusted
to achieve the specified time.
The 9500B can output single pulses whose two
adjustable constituents are Amplitude and Pulse
Energy. The limits on these parameters are:
Amplitude ±5V to ±20V
Pulse Energy 1.6J to 50J
For a fixed Pulse Amplitude the power into
50Ω will remain constant, regardless of pulse
duration. Adjusting the Pulse Energy operates
on the pulse duration at fixed amplitude.
Controlling these two parameters can adapt to
all specifications between the above limits.
Maximum and minimum power values into
50Ω are:
Power 0.5W to 8W
Amplitude ±5V to ±20V
Maximum and minimum pulse durations, with
corresponding parameters, are:
Duration 200ms to 100s
Amplitude ±20V to 5V
Pulse Energy 1.6J to 50J
Power 8W to 0.5W
4.13.5.5 Overload Pulse Editing
The 'Digit' and 'Direct' editing processes follow
the same general rules as for editing DC/
Square described in paras 4.4.
4.13.6 Using the 9500B to Test the Overload Response of a UUT
Oscilloscope
4.13.6.1 Introduction
The test procedure consists of inputting a single
pulse as specified in the oscilloscope
manufacturer's overload protection test, and
checking that the protection reacts to opencircuit the 50Ω input termination.
The form of input overload indication will
vary between oscilloscopes.
4.13.6.2 Interconnections
a. Use an active head to connect from the
required 9500B signal output channel to
the UUT input channel.
b. If a UUT trigger is required, use an active
head (or trigger cable) to connect from the
required 9500B channel output to the UUT
Trigger input.
4.13.6.3 9500B and UUT Scope
Setup
The following procedures assume that the
9500B instrument is in Manual Mode. It is also
assumed that the user will be familiar with the
methods of editing screen values. In the case
of difficulty, re-read the paragraphs earlier in
this Section 4.
1. Preparation
Ensure that both instruments are powered ON
and warmed up.
2. UUT 'Scope
Select the required function for overload pulse
protection test.
3. 9500B
Ensure that the 9500B is in Overload Pulse
Function with Output OFF. If in any other
function, press the 'Aux' key on the right of the
'OSCILLOSCOPE CALIBRATOR' panel,
then the
soft key on the right of the
screen.
4.13.6.4 Sequence of Operations
Refer to the table or list of UUT Oscilloscope
Overload Test points in the UUT Oscilloscope
Manufacturer's Test Guide.
Follow the sequence of test stages as directed
by the guide, and carry out the following
operations (1) to (5) at each stage.
1. 9500B
a. Use the front panel controls to set the
9500B Output to the required Overload
Pulse and polarity for the UUT 'Scope test
point.
b. If the scope requires a repetitive trigger,
press the 'AUTO TRIG' soft key at the
bottom right corner of the screen.
2. UUT 'Scope
a. Select the correct channel for the test point.
b. Select the correct range for the test point.
c. If required, adjust the sweep speed and
trigger level for a stable display.
3. 9500B
a. Set Output ON.
b. Press the 'TRIG PULSE' screen key once;
observe and note the UUT scope response.
c. If required, repeat pressing the 'TRIG
PULSE' screen key as detailed in the UUT
Oscilloscope Manufacturer's Test Guide;
observe and note the UUT scope responses.
4. UUT Response
Record the UUT 'Scope response at the test
point as detailed in the UUT Oscilloscope
Manufacturer's Test Guide. If required, reset
the scope protection circuit.
5. 9500B Set Output OFF.
4.13-2 Section 4: Using the Model 9500B — Overload Pulse Function
Descriptions assume 9500B/1100
4.14 Zero Skew Function
4.14.1 Introduction
'Skew' is defined as the relative delay between
two or more selected channels. If the channel
delays are equallized, then the condition is
known as 'Zero Skew'. This sub-section is a
guide to using the 9500B Zero Skew function
to:
a. Adjust selected 9500B channels to
equallize their delays.
b. Use the same channels as sources for
measuring the skew between input channels
of a UUT oscilloscope.
c. Also, two cable channels can be precision-
aligned.
For those users who require more detailed
instructions for interconnections, and
manipulating the front panel controls, refer to
sub-sections 4.2, 4.3 and 4.4.
Section 4.14 is divided into the following subsections:
4.14.1 Introduction .................................................. 4.14-1
4.14.2 Default Settings ............................................ 4.14-1
4.14.3 Menu Selections ........................................... 4.14-1
4.14.3.1 Signal Channel Selection ............. 4.14-1
4.14.3.2 Right Side Screen Keys —
Digit Edit/Sequence Scroll ........... 4.14-2
4.14.3.3 Right Side Screen Keys —
Numeric Entry .............................. 4.14-2
4.14.3.4 Bottom Screen Keys ..................... 4.14-2
4.14.4 Zero Skew Operation .................................... 4.14-2
4.14.4.1 Precision Alignment of
9500B Channel Outputs ............... 4.14-2
4.14.4.2 Preservation of Alignment ............ 4.14-2
4.14.5 Measurement of UUT Oscilloscope
Channel Skew............................................... 4.14-3
4.14.5.1 Introduction.................................. 4.14-3
4.14.5.2 Interconnections........................... 4.14-3
4.14.5.3 9500B and UUT Scope Setup....... 4.14-3
4.14.5.4 Sequence of Operations ............... 4.14-3
4.14.2 Default Settings
When Manual mode is selected the system
defaults into DC/Square function and shows
the DC/Square function initial menu screen.
The Zero Skew function is accessed by first
pressing the 'Aux' key on the right of the
'OSCILLOSCOPE CALIBRATOR' panel,
then pressing the soft key on the right
of the screen.
Whenever the Zero Skew menu screen is
opened, except on recovery from a standby
period, it will appear with the following default
settings:
ACTIVE CHANNELS
OFF
CHS 1,
Default Alignment
Skew
O/P
Amplitude
Frequency
TODAY'S DATE TIME
ADJUST
DEFAULT
ALIGN
ALIGN
2,
3, 50Ω
≤±50 ps
= 1.ØØØØ V
= 1.ØØØØ kHz
CHANNEL
SELECT
pk-pk
1
5
x 1Ø
÷ 1Ø
2
1
1.Ø
The above default screen has auto-selected
'Default Alignment', as indicated by the top
line of text and the highlighted screen key on
the bottom row. The unequallized (default)
alignment has a maximum skew of ±50ps
between channels. The amplitude and default
frequency are also shown on the screen.
The selected output channels are listed in the
central box at the top of the screen.
4.14.3 Menu Selections
4.14.3.1 Signal Channel Selection
Signal Channel selection differs from other
functions in that all channels fitted with an
active head will be selected on entering the
function. In the unit used for this description,
channels 1, 2 and 3 had heads attached, nothing
was fitted to channel 4, and a trigger cable was
fitted to channel 5.
The required channels can be selected on a
second menu screen. This is activated by
pressing the 'CHANNEL SELECT' screen key
on the bottom row. The screen changes to
show the available channels, which are already
selected:
pk-pk
SIGNAL
CH 1
SIGNAL
CH 2
SIGNAL
CH 3
SIGNAL
CH 4
SIGNAL
CH 5
ACTIVE CHANNELS
OFF
CHS 1,
CHANNEL 1>Standard Head
CHANNEL 2>Standard Head
CHANNEL 3>Standard Head
CHANNEL 4>No Head
CHANNEL 5>Trigger Cable
O/P
Amplitude
Frequency
TODAY'S DATE TIME
EXIT
2,
3, 50Ω
= 1.ØØØØ V
= 1.ØØØØ kHz
CABLE
SELECT
Neither channel 4 nor 5 has an active head
fitted. The highlights on channels 1, 2 and 3
indicate that only these channels have heads
active (confirmed by the legend in the top
central box), and for these zero skew can be
used. Toggling any one of these soft keys
deselects and reselects that channel. Note that
the function cannot operate with only one
channel selected, which will cause an error
message to appear on the screen.
In Zero Skew function, expected load is fixed
at 50Ω on all signal channels, so the 50Ω/1MΩ
switching soft key is absent.
In this function, the 'trigger channel' soft key is
absent.
When the Channel Select screen is presented,
adjustment of Frequency/Period is inhibited.
Pressing the '
EXIT' key will revert back to the
standard Zero Skew screen of para 4.14.2, the
top central box showing the channels which
have been selected.
continued overleaf
Final Width = 215mm
→
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Zero Skew Function 4.14-1
Final Width = 215mm
4.14.3 Menu Selections (Contd.)
4.14.3.2 Right Side Screen Keys —
Digit Edit/Sequence Scroll
Keys operate only on the value of Frequency/
Period:
X10 Multiplies the marked value by ten.
÷ 10 Divides the marked value by ten.
Press to change display from
1
Frequency to Period.
Press to change display from Period
1
to Frequency.
4.14.3.3 Right Side Screen Keys —
Numeric Entry
Right side screen keys operate on the value in
the edit box, and acting in place of the ↵ key,
exit from Numeric Entry back to Digit Edit/
Sequence Scroll; then set the value as evaluated
in the box:
Keys operate only on the value of Frequency/
Period:
X10 Multiplies the marked value by ten.
÷ 10 Divides the marked value by ten.
Hz Evaluates the number in the box in
Hertz.
kHz Evaluates the number in the box in
Kilohertz.
MHz Evaluates the number in the box in
Megahertz.
GHz Evaluates the number in the box in
Gigahertz.
4.14.3.4 Bottom Screen Keys
ADJUST Press to select Precision Alignment
ALIGN to adjust the alignment on each
active channel, and store the result.
DEFAULT After Precision Alignment has been
ALIGN stored, toggles between Default and
Precision Alignment.
CHANNEL Permits Zero Skew to be selected
SELECT for any two or more of the five
channels, providing that active
heads are fitted to those channels
(para 4.14.3.1).
1
2
5
1
2
5
Press to select Direct Mode (paras
1.Ø
4.4.3/4).
Press to select Scope Mode (sets
1.Ø
the step sequence to '1, 2, 5' or
'1, 2, 2.5, 4, 5' as chosen using the
Preferences key) (paras 4.4.1/2).
4.14.4 Zero Skew Operation
4.14.4.1 Precision Alignment of
9500B Channel Outputs
The 9500B is set into Zero Skew function.
Two or more channel heads are aligned, in
turn, on the same input channel of an
oscilloscope (can be the UUT oscilloscope),
while triggering from another channel or
external trigger.
Precision Alignment
Using Zero Skew function, 'CHANNEL
SELECT' is used to select the channels for
adjustment.
With output off, a channel active head is
connected into the scope input channel to be
used. At the required frequency, with output
on, the channel delay at half-amplitude is
marked using a cursor (also, by pressing the
'ADJUST ALIGN' soft key, the channel delay
can be adjusted, for a particular screen
alignment).
With output off, the first active head is removed
and a second channel's head is connected into
the same scope input channel. With output on,
'ADJUST ALIGN' allows the second channel
delay to be adjusted to the same cursor mark.
Repeating the adjustment for all other channels
achieves accurate common alignment.
Having aligned the selected output channels,
they can be used to apply signals simultaneously
to measure the relative delays between the
input channels of a UUT oscilloscope.
4.14.4.2 Preservation of Alignment
The 9500B Zero Skew function will allow
only the aligned channels to be used together
with their aligned heads. Unless channels
have been reconfigured, merely selecting
another function will not destroy the alignment
when Zero Skew function is again entered.
Deselecting a channel allows the other aligned
channels to be used. Reselecting the deselected
channel restores the alignment if the same
head is fitted.
If one of the heads is removed from its output
channel, and another substituted, the 9500B
will recognize the new head as being unaligned,
and will not allow it to be used until another
precision aligment has been carried out.
4.14-2 Section 4: Using the Model 9500B — Zero Skew Function
Descriptions assume 9500B/1100
4.14.5 Measurement of UUT Oscilloscope Channel Skew
4.14.5.1 Introduction
The procedure depends on pre-alignment of
the requisite number of active heads (if better
than ±50ps calibrator alignment is required —
when UUT specification is <200ps or better),
as broadly described in para 4.14.4.1.
4.14.5.2 Interconnections
Connect the required active heads to the UUT
oscilloscope input channels.
4.14.5.3 9500B and UUT 'Scope
Setup
The following procedure assumes that the
9500B instrument is in Manual Mode. It is also
assumed that the user will be familiar with
front panel operation. In case of difficulty, reread the paragraphs earlier in this Section 4.
1. Preparation
Ensure that both instruments are powered ON
and warmed up.
2. UUT 'Scope
Select the required function for input channel
skew test.
3. 9500B
Ensure that the 9500B is in Zero Skew function
with Output OFF. If in any other function,
press the 'Aux' key on the right of the
'OSCILLOSCOPE CALIBRATOR' panel,
then the
screen.
Ensure that the required channels are selected
and, if necessary, have been 'Precision Aligned'.
soft key on the right of the
4.14.5.4 Sequence of Operations
Refer to the table or list of UUT Oscilloscope
Input delay measurement points in the UUT
Oscilloscope Manufacturer's Test Guide.
Follow the sequence of test stages as directed
by the guide, and carry out the following
operations (1) to (5) at each stage.
1. UUT 'Scope
a. Select the correct signal test channels.
b. Select trigger for the test from the correct
channel.
c. Select the correct Y sensitivity range.
d. Select the correct timebase speed for the
test.
e. If required, adjust the sweep speed and
trigger level for a stable display.
2. 9500B
Set Output ON.
3. UUT 'Scope
a. Adjust each channel Y position control to
superimpose the waveforms, equally
disposed across the X axis.
b. Use the UUT oscilloscope controls to
measure the relative delays on each channel
(at half amplitude).
4. UUT Response
Record the UUT input channels' relative delays
as detailed in the UUT Oscilloscope
Manufacturer's Test Guide.
5. 9500B Set Output OFF.
Final Width = 215mm
Descriptions assume 9500B/1100
Section 4: Using the Model 9500B — Zero Skew Function 4.14-3
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4.15 Auxiliary Input
4.15.1 Introduction 4.15.5 Auxiliary Input Operation
This sub section is a guide to the use of the
9500B to generate variable width pulses for
the testing trigger timing circuitry within an
Oscilloscope
For those users who require more detailed
instructions for interconnections, and
manipulating the front panel controls, refer to
sub-sections 4.2, 4.3 and 4.4.
Section 4.15 is divided into the following subsections:
4.15.1 Introduction .................................................. 4.15-1
4.15.2 Automated Routing ....................................... 4.15-1
4.15.3 Default Settings ............................................ 4.15-1
4.15.4 Menu Selections ........................................... 4.15-1
4.15.4.1 Retained Channel Memory ........... 4.15-1
4.15.5 Auxiliary Input Operation .............................. 4.15-1
4.15.5.1 Bottom Screen Keys ..................... 4.15-1
4.15.6 Using the 9500B for Automated Routing of
User-Specific Calibration Signals to
UUT Oscilloscope Input Channels ................ 4.15-2
4.15.6.1 Introduction.................................. 4.15-2
4.15.6.2 Interconnections........................... 4.15-2
4.15.6.3 User's Signal Source, 9500B and
UUT Scope Setup......................... 4.15-2
4.15.6.4 Sequence of Operations ............... 4.15-2
4.15.2 Automated Routing
Despite the huge flexibility if the 9500B, it is
sometimes required to apply signals from user's
equipment to the inputs of a UUT oscilloscope,
for specific calibration or test purposes.
With the 9500B Auxiliary Input selected,
wideband passive routing is available from a
rear-panel 50Ω SMA input through to the
4.15.3 Default Settings
When Manual mode is selected the system
defaults into DC/Square function and shows
the DC/Square function initial menu screen.
The Auxiliary Input function is accessed by
first pressing the 'Aux' key on the right of the
'OSCILLOSCOPE CALIBRATOR' panel,
then pressing the
AUX IN
soft key on the
right of the screen.
Whenever the Auxiliary Input screen is opened,
except on recovery from a standby period, it
will appear as follows (for details of non-
volatility, refer also to para 4.5.3.6):
AUX
IN
SIGNAL CH1 1MΩ
OFF
Auxiliary Input
±4Ø V pk MAX
TODAY'S DATE TIME
CHANNEL
SELECT
4.15.4 Menu Selections
Signal Channel selection, Trigger Channel
selection, Cable selection and Trigger Ratio all
operate in the same way as in DC/Square
function. Refer to paras 4.5.3.
Note: Without Option 5, only one signal
channel and one trigger channel is
available.
4.15.5.1 Bottom Screen Keys
CHANNEL Permits the AUX INPUT signal to
SELECT be routed to any of the five heads,
allowing selection of signal channel
and expected load only (paras
4.5.3).
selected 9500B channel output, using 9500B
front panel controls.
No trigger pickoff is provided, and internal
4.15.4.1 Retained Channel Memory
Refer to para 4.5.3.6.
triggers are not available.
Final Width = 215mm
Descriptions assume 9500B/1100
continued overleaf
Section 4: Using the Model 9500B — Auxiliary Input 4.15-1
→
Final Width = 215mm
4.15.6 Using the 9500B for Automated Routing of User-Specific
Calibration Signals to UUT Oscilloscope Input Channels
4.15.6.1 Introduction
The calibration procedure consists of routing a
signal from a user's source to a specified channel
input, as required by the oscilloscope
manufacturer's calibration procedure.
4.15.6.2 Interconnections
a. Use the appropriate active head to connect
from the required 9500B signal output
channel to the UUT input channel.
b. Connect the user's source to the
'AUXILIARY INPUT' SMA connector on
the 9500B rear panel.
4.15.6.3 User's Signal Source,
9500B and UUT Scope
Setup
The following procedures assume that the
9500B instrument is in Manual Mode. It is also
assumed that the user will be familiar with
front panel operation. In case of difficulty, reread the paragraphs earlier in this Section 4.
1. Preparation
Ensure that all instruments are powered ON
and warmed up.
2. UUT 'Scope
Select the required function requiring the user's
specific signal .
3. 9500B
Ensure that the 9500B is in Auxiliary Input
with Output OFF. If in any other function,
press the 'Aux' key on the right of the
'OSCILLOSCOPE CALIBRATOR' panel,
then the
screen.
4. User's Signal Source
Set up the signal source to provide the required
signal to the 9500B rear panel 'Auxiliary Input'
(refer to the Auxiliary Input Routing
soft key on the right of the
AUX IN
Specification in para 4.15.5.2).
4.15.6.4 Sequence of Operations
Refer to the table or list of UUT Oscilloscope
calibration points in the UUT Oscilloscope
Manufacturer's Calibration Guide.
Follow the sequence of calibration stages as
directed by the guide, and carry out the
following operations (1) to (5) at each stage.
1. User's Signal Source
Ensure that the correct signal is being
output.
2. UUT 'Scope
a. Select the correct channel for the cal point.
b. Select the correct range for the cal point.
3. 9500B Set Output ON.
4. UUT 'Scope
a. Adjust the sweep speed and trigger level
for a stable display.
b. Observe and record the UUT's response to
the user-specific signal as detailed in the
UUT Oscilloscope Manufacturer's
Calibration Guide.
5. 9500B Set Output OFF.
4.15-2 Section 4: Using the Model 9500B — Auxiliary Input
Descriptions assume 9500B/1100
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