B&K Precision 4075B, 4076B, 4077B, 4078B, 4079B Instruction Manual
...
Model: 4075B, 4076B, 4077B, 4078B, 4079B, 4080B
Arbitrary/Function Waveform Generator
USER MANUAL
Safety Summary
The following safety precautions apply to both operating and maintenance personnel and must be
followed during all phases of operation, service, and repair of this instrument.
Before applying power to this instrument:
Read and understand the safety and operational information in this manual.
Apply all the listed safety precautions.
Verify that the voltage selector at the line power cord input is set to the correct line voltage.
Operating the instrument at an incorrect line voltage will void the warranty.
Make all connections to the instrument before applying power.
Do not operate the instrument in ways not specified by this manual or by B&K Precision.
Failure to comply with these precautions or with warnings elsewhere in this manual violates the
safety standards of design, manufacture, and intended use of the instrument. B&K Precision assumes
no liability for a customer’s failure to comply with these requirements.
Category rating
The IEC 61010 standard defines safety category ratings that specify the amount of electrical energy
available and the voltage impulses that may occur on electrical conductors associated with these
category ratings. The category rating is a Roman numeral of I, II, III, or IV. This rating is also
accompanied by a maximum voltage of the circuit to be tested, which defines the voltage impulses
expected and required insulation clearances. These categories are:
Category I (CAT I): Measurement instruments whose measurement inputs are not intended to be
connected to the mains supply. The voltages in the environment are typically derived from a limitedenergy transformer or a battery.
Category II (CAT II): Measurement instruments whose measurement inputs are meant to be
connected to the mains supply at a standard wall outlet or similar sources. Example measurement
environments are portable tools and household appliances.
Category III (CAT III): Measurement instruments whose measurement inputs are meant to be
connected to the mains installation of a building. Examples are measurements inside a building's
circuit breaker panel or the wiring of permanently-installed motors.
Category IV (CAT IV): Measurement instruments whose measurement inputs are meant to be
connected to the primary power entering a building or other outdoor wiring.
i
Do not use this instrument in an electrical environment with a higher category rating than what is
specified in this manual for this instrument.
You must ensure that each accessory you use with this instrument has a category rating equal to or
higher than the instrument's category rating to maintain the instrument's category rating. Failure to
do so will lower the category rating of the measuring system.
Electrical Power
This instrument is intended to be powered from a CATEGORY II mains power environment. The mains
power should be 120 V RMS or 240 V RMS. Use only the power cord supplied with the instrument and
ensure it is appropriate for your country of use.
Ground the Instrument
To minimize shock hazard, the instrument chassis and cabinet must be connected to an electrical
safety ground. This instrument is grounded through the ground conductor of the supplied, threeconductor AC line power cable. The power cable must be plugged into an approved three-conductor
electrical outlet. The power jack and mating plug of the power cable meet IEC safety standards.
Do not alter or defeat the ground connection. Without the safety ground connection, all accessible
conductive parts (including control knobs) may provide an electric shock. Failure to use a properlygrounded approved outlet and the recommended three-conductor AC line power cable may result in
injury or death.
Unless otherwise stated, a ground connection on the instrument's front or rear panel is for a
reference of potential only and is not to be used as a safety ground.
Do not operate in an explosive or flammable atmosphere
Do not operate the instrument in the presence of flammable gases or vapors, fumes, or finely-divided
ii
particulates.
The instrument is designed to be used in office-type indoor environments. Do not operate the
instrument
In the presence of noxious, corrosive, or flammable fumes, gases, vapors, chemicals, or finely-
divided particulates.
In relative humidity conditions outside the instrument's specifications.
In environments where there is a danger of any liquid being spilled on the instrument or
where any liquid can condense on the instrument.
In air temperatures exceeding the specified operating temperatures.
In atmospheric pressures outside the specified altitude limits or where the surrounding gas is
not air.
In environments with restricted cooling air flow, even if the air temperatures are within
specifications.
In direct sunlight.
This instrument is intended to be used in an indoor pollution degree 2 environment. The operating
temperature range is 0 °C to 50 °C and the operating humidity is ≤ 95 % relative humidity at < 30 °C,
with no condensation allowed.
Measurements made by this instrument may be outside specifications if the instrument is used in
non-office-type environments. Such environments may include rapid temperature or humidity
changes, sunlight, vibration and/or mechanical shocks, acoustic noise, electrical noise, strong electric
fields, or strong magnetic fields.
Do not operate instrument if damaged
If the instrument is damaged, appears to be damaged, or if any liquid, chemical, or other material gets
on or inside the instrument, remove the instrument's power cord, remove the instrument from
service, label it as not to be operated, and return the instrument to B&K Precision for repair. Notify
B&K Precision of the nature of any contamination of the instrument.
Clean the instrument only as instructed
iii
Do not clean the instrument, its switches, or its terminals with contact cleaners, abrasives, lubricants,
solvents, acids/bases, or other such chemicals. Clean the instrument only with a clean dry lint-free
cloth or as instructed in this manual.
Not for critical applications
This instrument is not authorized for use in contact with the human body or for use as a component
in a life-support device or system.
Do not touch live circuits
Instrument covers must not be removed by operating personnel. Component replacement and
internal adjustments must be made by qualified service-trained maintenance personnel who are
aware of the hazards involved when the instrument's covers and shields are removed. Under certain
conditions, even with the power cord removed, dangerous voltages may exist when the covers are
removed. To avoid injuries, always disconnect the power cord from the instrument, disconnect all
other connections (for example, test leads, computer interface cables, etc.), discharge all circuits, and
verify there are no hazardous voltages present on any conductors by measurements with a properlyoperating voltage-sensing device before touching any internal parts. Verify the voltage-sensing device
is working properly before and after making the measurements by testing with known-operating
voltage sources and test for both DC and AC voltages. Do not attempt any service or adjustment unless
another person capable of rendering first aid and resuscitation is present.
Do not insert any object into an instrument's ventilation openings or other openings.
Hazardous voltages may be present in unexpected locations in circuitry being tested when a fault
condition in the circuit exists.
Fuse replacement
Fuse replacement must be done by qualified service-trained maintenance personnel who are aware
of the instrument's fuse requirements and safe replacement procedures. Disconnect the instrument
from the power line before replacing fuses. Replace fuses only with new fuses of the fuse types,
voltage ratings, and current ratings specified in this manual or on the back of the instrument. Failure
to do so may damage the instrument, lead to a safety hazard, or cause a fire. Failure to use the
iv
specified fuses will void the warranty.
Servicing
Do not substitute parts that are not approved by B&K Precision or modify this instrument. Return the
instrument to B&K Precision for service and repair to ensure that safety and performance features are
maintained.
Cooling fans
This instrument contains one or more cooling fans. For continued safe operation of the instrument,
the air inlet and exhaust openings for these fans must not be blocked nor must accumulated dust or
other debris be allowed to reduce air flow. Maintain at least 25 mm clearance around the sides of the
instrument that contain air inlet and exhaust ports. If mounted in a rack, position power devices in
the rack above the instrument to minimize instrument heating while rack mounted. Do not continue
to operate the instrument if you cannot verify the fan is operating (note some fans may have
intermittent duty cycles). Do not insert any object into the fan's inlet or outlet.
For continued safe use of the instrument
Do not place heavy objects on the instrument.
Do not obstruct cooling air flow to the instrument.
Do not place a hot soldering iron on the instrument.
Do not pull the instrument with the power cord, connected probe, or connected test lead.
Do not move the instrument when a probe is connected to a circuit being tested.
v
Compliance Statements
This product is subject to Directive 2002/96/EC of the European
Parliament and the Council of the European Union on waste electrical
and electronic equipment (WEEE), and in jurisdictions adopting that
Directive, is marked as being put on the market after August 13, 2005,
and should not be disposed of as unsorted municipal waste. Please
utilize your local WEEE collection facilities in the disposition of this
product and otherwise observe all applicable requirements.
Disposal of Old Electrical & Electronic Equipment (Applicable in the European
Union and other European countries with separate collection systems)
vi
CE Declaration of Conformity
This instrument meets the requirements of 2006/95/EC Low Voltage Directive and 2004/108/EC
Electromagnetic Compatibility Directive with the following standards.
Low Voltage Directive
- EN61010-1: 2001
EMC Directive
- EN 61000-3-2: 2006
- EN 61000-3-3: 1995+A1: 2001+A2: 2005
- EN 61000-4-2 / -3 / -4 / -5 / -6 / -11
- EN 61326-1: 2006
vii
Safety Symbols
Refer to the user manual for warning information
to avoid hazard or personal injury and prevent
damage to instrument.
Electric Shock hazard
Alternating current (AC)
Chassis (earth ground) symbol.
Ground terminal
On (Power). This is the In position of the power
switch when instrument is ON.
Off (Power). This is the Out position of the power
switch when instrument is OFF.
Power Switch (On/Off). This is the power switch
located in front of the instrument.
CAUTION indicates a hazardous situation which, if
not avoided, will result in minor or moderate injury
WARNING indicates a hazardous situation which, if
not avoided, could result in death or serious injury
DANGER indicates a hazardous situation which, if
not avoided, will result in death or serious injury.
viii
Contents
Safety Summary .............................................................................................. i
Compliance Statements ........................................................................................................ vi
Safety Symbols .................................................................................................................... viii
1 General Information ........................................................................... 1
1.1 Product Overview ......................................................................................................... 1
1.2 Package Contents ......................................................................................................... 1
1.3 Front Panel Overview ................................................................................................... 2
Front Panel Description ................................................................................................ 2
1.4 Rear Panel Overview .................................................................................................... 3
Rear Panel Description ................................................................................................. 3
1.5 Display Overview .......................................................................................................... 4
Display Description ....................................................................................................... 4
2 Getting Started ................................................................................... 4
2.1 Input Power Requirements .......................................................................................... 5
Input Power .................................................................................................................. 5
2.2 Output Connections ..................................................................................................... 5
Impedance Matching.................................................................................................... 6
2.3 Preliminary Check ......................................................................................................... 6
Output Check ................................................................................................................ 6
3 Operating Instructions ........................................................................ 7
3.1 Menu Keys .................................................................................................................... 7
Menu Tree..................................................................................................................... 7
PARAMETER Key ......................................................................................................... 10
WAVEFORM Key .......................................................................................................... 12
PULSE Menu ............................................................................................................... 18
MODE Key ................................................................................................................... 18
SWEEP Key .................................................................................................................. 20
MODULATION Key ...................................................................................................... 21
SETUPS Key ................................................................................................................. 23
UTILITY Key ................................................................................................................. 25
3.2 ON Key ........................................................................................................................ 26
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3.3 Cursor Movement Keys .............................................................................................. 26
3.4 Rotary Input Knob ...................................................................................................... 26
3.5 Power-On Settings ...................................................................................................... 26
3.6 Memory ...................................................................................................................... 27
3.7 Displaying Errors ......................................................................................................... 28
3.8 Creating an Arbitrary Waveform ................................................................................ 29
Entering Individual Data Points .................................................................................. 29
Creating a Complex Arbitrary Waveform ................................................................... 30
Setting the Frequency ................................................................................................. 32
Setting the Amplitude ................................................................................................. 33
Loading an Arbitrary Waveform ................................................................................. 33
3.9 Remote Interface ........................................................................................................ 33
USB Interface .............................................................................................................. 33
GPIB Interface ............................................................................................................. 34
4 Programming .................................................................................... 35
4.1 Overview .................................................................................................................... 35
GPIB ............................................................................................................................ 35
4.2 Device State ................................................................................................................ 35
Local State (LOCS) ....................................................................................................... 35
Local With Lockout State (LWLS) ................................................................................ 35
Remote State (REMS) ................................................................................................. 35
Remote With Lockout State (RWLS) ........................................................................... 35
4.3 Interface Function Subsets ......................................................................................... 35
4.4 Device Address ........................................................................................................... 35
4.5 Message Exchange Protocol ....................................................................................... 36
The Input Buffer .......................................................................................................... 36
The Output Queue ...................................................................................................... 36
Response Messages .................................................................................................... 36
Coupled Commands .................................................................................................... 36
4.6 Block Data ................................................................................................................... 37
4.7 Instrument Identification ........................................................................................... 38
4.8 Instrument Reset ........................................................................................................ 38
4.9 Self-test ...................................................................................................................... 38
4.10 Command Syntax ........................................................................................................ 38
x
General Command Structure ...................................................................................... 38
SCPI Command Structure ........................................................................................... 41
4.11 Status Reporting ......................................................................................................... 43
The Status Byte ........................................................................................................... 43
Service Request Enabling ............................................................................................ 43
Standard Event Status Register .................................................................................. 43
The Error Queue ......................................................................................................... 44
Error Codes ................................................................................................................. 44
4.12 Common Commands .................................................................................................. 48
System Data Commands............................................................................................. 48
Internal Operation Commands ................................................................................... 48
Synchronization Commands ....................................................................................... 49
Status and Event Commands ...................................................................................... 49
Device Trigger Commands .......................................................................................... 51
Stored Settings Commands ........................................................................................ 51
4.13 Instrument Control Commands .................................................................................. 52
SOURce Subsystem ..................................................................................................... 52
OUTPut Subsystem ..................................................................................................... 68
Trigger Subsystem ...................................................................................................... 69
Arbitrary Subsystem ................................................................................................... 71
Status Subsystem ........................................................................................................ 80
System Subsystem ...................................................................................................... 84
4.14 IEEE 488.1 Interface Messages ................................................................................... 87
GET - Group Execute Trigger ....................................................................................... 87
DCL - Device Clear ....................................................................................................... 87
SDC - Selected Device Clear ........................................................................................ 87
LLO - Local Lockout ..................................................................................................... 87
4.15 SCPI Command Tree ................................................................................................... 88
Root Node ................................................................................................................... 88
:SOURce Subsystem .................................................................................................... 88
:OUTPut Subsystem .................................................................................................... 88
:TRIGger Subsystem .................................................................................................... 89
:ARBitrary Subsystem ................................................................................................. 89
:STATus Subsystem ...................................................................................................... 90
xi
:SYSTem Subsystem ..................................................................................................... 90
4.16 Block Transfer (GPIB only) .......................................................................................... 92
4.17 GPIB Communication Protocol ................................................................................... 94
General ....................................................................................................................... 94
Responses to IEEE-488.1 Interface Messages ............................................................ 94
IEEE 488.2 Interface Function Subsets ........................................................................ 97
5 Troubleshooting Guide ...................................................................... 98
6 Specifications .................................................................................... 99
SERVICE INFORMATION ............................................................................. 103
LIMITED THREE-YEAR WARRANTY .............................................................. 104
xii
1 General Information
1.1 Product Overview
The B&K Precision 4075B series are versatile high performance arbitrary/function waveform
generators capable of generating arbitrary waveforms with 14-bit resolution and length up to
16,000,000 points. In addition to the large waveform memory, these generators offer AM, FM, and FSK
modulation along with sweep, burst, and flexible triggering capabilities. The instrument can be
remotely operated via the USBTMC or GPIB (IEEE-488.2) interface supporting SCPI commands. Users
can create arbitrary waveforms directly from the front panel using the generator’s built-in waveform
editing functions or load arbitrary waveforms via the instrument’s remote interfaces.
Features:
14-bit, 200 MSa/s, and up to 16M points arbitrary waveform generator
Generate Sine waveforms up to 80 MHz, Square waveforms up to 60 MHz
Color LCD display
AM, FM, and FSK modulation functions
Fully programmable markers
Store/recall up to 49 different instrument setups
Standard USBTMC and GPIB (50 MHz/80 MHz models only) interfaces
SCPI-compliant command set
1.2 Package Contents
Please inspect the instrument mechanically and electrically upon receiving it. Unpack all items from the
shipping carton, and check for any obvious signs of physical damage that may have occurred during
transportation. Report any damage to the shipping agent immediately. Save the original packing carton
for possible future reshipment. Every instrument is shipped with the following contents:
1 x 4075B, 4076B, 4077B, 4078B, 4079B, or 4080B waveform generator
1 x Full instruction manual on CD
1 x AC power cord
1 x USB type A to type B cable
1 x Certificate of calibration
1 x Test report
Verify that all items above are included in the shipping container. If anything is missing, please contact
B&K Precision.
1
Power On/Off Switch
Function Keys (F1-F5)
UTILITY Key
CHANNEL Key (4078B, 4079B, and 4080B only)
ENTER Key
Channel Output BNC (50 Ω) and Enable
Rotary Knob and Cursor Keys
Unit Setting Keys
Numeric Keypad
Menu Option Keys
Color LCD Display Window
1
2 3 4 5 6
7 8 9
10
11
(For Models
and 4077B)
1
2
3 4 5
7
8
9
11
10
6
1.3 Front Panel Overview
4075B, 4076B,
Front Panel Description
Figure 1.1 – Front Panel Overview
2
Modulation Input BNC
External Trigger Input BNC
Sync Output BNC
Marker Output BNC
10 MHz Reference Output BNC
10 MHz Reference Input BNC
USBTMC interface
Earth Ground
AC Power Connector and Fuse Box
Rear Cooling Fan
GPIB Port (4076B, 4077B, 4079B, and 4080B only)
Channel 2 I/O (4078B, 4079B, and 4080B only)
Channel 1 I/O
1 2 3
4
5 6 7 8 9
10
11
12
13
1 2 3
4
9
11
5 6 7
8
10
13
12
1.4 Rear Panel Overview
Rear Panel Description
Figure 1.2 – Rear Panel Overview
3
Wave Type
Trigger Mode
Frequency
Menu Parameters Values
Menu Options
Menu Title
General Waveform Display
Channel Selection Indicator
1
2 3 4 5 6
7
8
5
4
8 2 1 3 7
6
1.5 Display Overview
Display Description
2 Getting Started
Figure 1.3 – Display Overview
Before connecting and powering up the instrument, please review and go through the instructions in
this chapter.
4
The included AC power cord is safety certified for this
instrument operating in rated range. To change a
cable or add an extension cable, be sure that it can
meet the required power ratings for this instrument.
Any misuse with wrong or unsafe cables will void the
warranty.
2.1 Input Power Requirements
Input Power
The instrument has a universal AC input that accepts line voltage and frequency input within:
100 – 240 V (+/- 10%), 50 – 60 Hz (+/- 5%)
Before connecting to an AC outlet or external power source, be sure that the power switch is in the OFF
position and verify that the AC power cord, including the extension line, is compatible with the rated
voltage/current and that there is sufficient circuit capacity for the power supply. Once verified, connect
the cable firmly.
2.2 Output Connections
The waveform generator output circuits are protected against short circuit or nominal accidental
voltages applied to the main output connector. The output circuits operate as a 50 Ω voltage source
working into a 50 Ω load. At higher frequencies, a non-terminated or improperly terminated output
may cause aberrations on the output waveform. In addition, loads with an impedance less than 50 Ω
will reduce the waveform amplitude, while loads with an impedance greater than 50 Ω will increase
waveform amplitude.
Excessive distortion or aberrations caused by improper termination are less noticeable at lower
frequencies, especially with sine and triangle waveforms. To ensure waveform integrity, follow these
precautions:
1. Use good quality 50 Ω coaxial cable and connectors.
2. Make all connections tight and as short as possible.
3. Use good quality attenuators, if it is necessary to reduce waveform amplitudes applied to sensitive
circuits.
4. Use termination or impedance-matching devices to avoid reflections.
5. Ensure that attenuators and terminations have adequate power handling capabilities.
If there is a DC voltage across the output load, use a coupling capacitor in series with the load. The
time constant of the coupling capacitor and load must be long enough to maintain pulse flatness.
5
Impedance Matching
If the waveform generator is driving a high impedance, such as a 1 MΩ input impedance (paralleled by
a stated capacitance) of an oscilloscope vertical input, connect the transmission line to a 50 Ω
attenuator, a 50 Ω termination and to the oscilloscope input. The attenuator isolates the input
capacitance of the device and terminates the waveform generator properly.
2.3 Preliminary Check
Complete the following steps to verify that the generator is ready for use.
1. Verify AC Input Voltage
Verify and check to make sure proper AC voltages are available to power the instrument. The AC
voltage range must meet the acceptable specification as explained in section 2.1.
2. Connect Power
Connect AC power cord to the AC receptacle in the rear panel and press the power switch to the
ON position to turn ON the instrument. The instrument will have a boot screen while loading, after
which the main screen will be displayed.
3. Self Adjust
At power-on, the waveform generator performs a diagnostic self-test procedure to check itself for
errors. If it finds an error, an error code and text will appear in the display window. Other error
codes appear when you enter an invalid front-panel setting. For more information on error codes,
see the Displaying Errors section 3.7. When the waveform generator finishes the diagnostic selftest routine, it enters the local state (LOCS) and assumes power-on default settings.
Output Check
Follow the steps below to do a quick check of the settings and waveform output.
1. Turn on the instrument and set the instrument to default settings. To set to default, press Setups,
press Recall, and select 0 Default Setup. The instrument will set both channels with the following
parameters:
Waveform Shape: Sine
Frequency: 1.000000000 kHz
Amplitude: 5 .000 Vpp
Offset: 0.000 Vdc
Phase: 0.0 °
Output Impedance: 50 OHM
2. Connect the BNC output of CH1 into an oscilloscope.
3. Press the On button on top of CH1 output BNC to turn on the output and observe a sine wave with
the parameters above.
4. Press the Freq option in the menu and use the rotary knob or the numeric keypad to change
frequency. Observe the changes on the oscilloscope display.
6
5. Press the Ampl option in the menu and use the rotary knob or the numeric keypad to change the
amplitude. Observe the changes on the oscilloscope display.
6. Press the Offset option in the menu and use the rotary knob or the numeric keypad to change the
DC offset. With the oscilloscope set for DC coupling, observe the changes on the display.
7. Now, connect the BNC output of CH2 into an oscilloscope and follow steps 3 to 6 to check its
output.
3 Operating Instructions
3.1 Menu Keys
These keys select the main menus for displaying or changing a parameter, function or mode. Below is
the hierarchy and selections of the menu tree.
Menu Tree
- PARAM
o FREQ | RATE (Arb Mode Only)
o AMPL| OFST
o UNITS (Only when AMPL is selected, press to toggle display in Vp-p, Vrms, dBm)
o 50 OHM | HI-Z
o INTCLK | EXTCLK
- WAVE
o SINE
o SQR (Duty Cycle)
o TRI (Symmetry)
o PULSE
FREQ | PERIOD
WIDTH
EQUAL EDGE
LEAD | TRAIL
PREV
o ARB
START
LENGTH
MARK
ADDR
LENGTH
ON | OFF
PREV
EDIT
POINT
7
o ADRS
o DATA
o PREV
LINE
o FROM
o TO
o EXEC
NO
YES
PREV
o PREV
PREDEF
o TYPE (Predefined Waveform Type)
o FROM | DATA
o LENG
o SCALE (In %)
o EXEC
NO
YES
PREV
o EXEC (When NOISE is selected as TYPE)
ADD
NEW
EXEC
NO
YES
PREV
PREV
MORE
o COPY
FROM
LENG
TO
EXEC
NO
YES
PREV
PREV
o CLEAR
FROM
TO
ALL
EXEC
NO
YES
8
PREV
o PROT
FROM
TO
ALL
ON | OFF
PREV
o SHOW WAVE
o PREV
PREV
PREV
- MODE
o CONT
o TRIG
MAN (Manual Trigger)
INT (Internal Trigger Rate)
EXT (External Trigger)
PREV
o GATE
MAN (Manual Gate Trigger)
INT (Internal Gate Trigger Rate)
EXT (External Gate Trigger)
PREV
o BURST
MAN (Manual Burst)
INT (Internal Burst Rate)
EXT (Burst External)
NBRST (Number of Bursts)
PREV
o PHASE (Not available in ARB mode)
PHASE (Set Phase Degree)
SET-ZERO (Set Phase to 0)
SYNC Both Ch
PREV
o SYNC Both Ch (ARB mode only)
- SWEEP ( Not Available in PULSE and ARB mode)
o ON | OFF
o START (Sweep Start Frequency)
o STOP (Sweep Stop Frequency)
o RATE (Sweep Rate)
o LIN | LOG | UP-DOWN (Linear or Logarithmic)
- MODUL
o AM
ON | OFF
% (% of Modulation)
PREV
9
- SETUPS
- UTIL
SHAPE (AM Modulation Shape)
MOD FREQ (AM Modulation Frequency)
EXT | INT (External or Internal Modulation)
o FM (Not available in PULSE and ARB mode)
ON | OFF
DEV (FM Deviation Frequency)
SHAPE (FM Modulation Shape)
MOD FREQ (FM Modulation Frequency)
EXT | INT (External or Internal Modulation)
o FSK (Not available in PULSE and ARB mode)
ON | OFF
F-LO (FSK Low Frequency)
F-HI (FSK High Frequency)
RATE (FSK Rate)
EXT | INT (External or Internal modulation)
o RECALL (Recall Setup from Memory)
o LOAD ARB (Loads arbitrary waveform. Available only in ARB mode)
o STORE (Store Setup from Memory)
o SAVE ARB (Saves current arbitrary waveform into memory. Available only in ARB mode)
o GPIB (ACTIVE) (GPIB Address)
o USB (ACTIVE)
o POWER (Power On Setup)
o SN (Serial number information)
PARAMETER Key
This key selects and displays the waveform frequency, amplitude, offset and external reference, and
allows you to adjust the parameters. When Arbitrary Waveform is selected, the display also shows the
point rate.
Figure 3.1 - Frequency Menu
F1: Freq/Rate - (Frequency) Selects and displays the frequency. Change the frequency setting using
the cursor keys and rotary knob or numerical keypad. If a certain wavelength can't
produce the waveform at the desired frequency, the waveform generator displays an
“Out of Range” error message.
10
Front Panel
Amplitude Setting
Data Point
Value
Relative Output
Amplitude Voltage
5 Vp-p
8191
+2.5 V
5 Vp-p
4095
+1.25 V
5 Vp-p
0
0V (offset voltage)
- (Rate) Selects and displays the Point Rate (for Arbitrary Waveform only). The Rate
parameter governs the rate at which waveform points are executed, and thus the
frequency of the waveform output. When you set this parameter, the waveform
generator will keep that execution rate for all waveform lengths until it is changed.
F3: Ampl/Ofst - Selects the Amplitude or the Offset parameters.
- (Offset) Change the offset by using the cursor keys, rotary dial or numerical keypad. If
a certain setting cannot be produced, the waveform generator will display a “Setting
Conflict” message.
In Arbitrary mode, this setting defines the maximum peak-to-peak amplitude of a fullscale waveform. If the waveform does not use the full scale of data (-8191 to +8191),
then its actual amplitude will be smaller.
Figure 3.2 - Amplitude Menu
Setting the Amplitude
The following equation represents the relative output amplitude voltage relationship
between the front-panel amplitude peak-to-peak setting and the data point values in
waveform memory:
𝐴𝑚𝑝𝑙𝑖𝑡𝑢𝑑𝑒 (𝑃𝑒𝑎𝑘 𝑡𝑜 𝑃𝑒𝑎𝑘 𝑠𝑒𝑡𝑡𝑖𝑛𝑔)× 𝑑𝑎𝑡𝑎 𝑝𝑜𝑖𝑛𝑡𝑠 𝑣𝑎𝑙𝑢𝑒
𝑂𝑢𝑡𝑝𝑢𝑡 𝑉𝑜𝑙𝑡𝑎𝑔𝑒 =
+ 𝑜𝑓𝑓𝑠𝑒𝑡
16382
Where 16382 is the total data point value range in waveform memory.
Examples
Table 3.1 - Output Voltage Examples
11
9 Vp-p
-4095
-4.5 V
4 Vp-p
-8191
-2 V
F4: Units - Selects the amplitude units: peak-to-peak, RMS or dBm (sine waves only).
Note: This option is shown when Ampl is selected.
F5: 50 OHM/HI-Z - Selects the amplitude voltage value based on the two different impedance
termination (i.e. if connected to oscilloscope with 1MΩ input impedance,
generator will display the correct amplitude value for 1MΩ termination when HIZ is selected).
Note: This option is shown when Ampl/Ofst is selected.
F5: Int Ref/Ext Ref - Selects internal or external reference source (the external reference must be
connected to the rear panel Ref In connector).
Note: This option is shown when Freq is selected.
WAVEFORM Key
Displays the waveforms available:
Figure 3.3 - Waveform Menu
F1: Sine - Selects the sine waveform.
F2: Sqr - Selects the square waveform and displays the waveform duty cycle that can be
changed from 20% to 80% up to 10 MHz, 40% to 60% up to 30 MHz.
F3: Tri - Selects the triangle waveform and displays the waveform duty cycle that can be
changed from 0% to 100% up to 500 kHz, 10% to 90% up to 2 MHz, and 50% up to the
max frequency. The triangle maximum frequency is 5 MHz.
F4: Pulse - Selects the Pulse waveform and then displays the pulse menu. Refer to the PULSE
Menu section for details.
F5: ARB - Selects the arbitrary waveform and then displays the Arbitrary menu:
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Figure 3.4 - Arbitrary Menu
F1: Start - Selects the starting address of the arbitrary waveform.
F2: Length - Selects the length of the arbitrary waveform. Use the START and LENGTH
menu selection to mark a selection of the waveform memory that will be
executed.
Note: The maximum Length allowed depends on model.
F3: Mark - (Marker Output) Selects the marker output address of the signal to be
available at the Marker Out connector. The F2: ADDR, F3: LENGTH or F4:
ON/OFF can be selected and the Marker output signal can be available at
every 4th location address between the start and stop addresses of the
executed waveform, starting from address 1 (i.e. 1, 5, 9, 13, etc.). This
marker output feature will allow you to generate a positive TTL level
output signal at the points specified by address and length.
Note: The maximum Length allowed to be set for marker is 4000. Marker
Length can be set at every 4th location address starting from 4 (i.e. 4, 8,
12, etc.)
Figure 3.5 - Marker Menu
Below is an illustration of how the marker function works:
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Start Address
Length
Markers
0
5 V
Arbitrary waveform
channel output
5 V TTL signal output
from front panel
from rear Marker Out
connector
F4: Edit - Refer to the Arbitrary EDIT Menu section below for details.
F5: Prev - Back to previous menu.
Note: Changing one of the arbitrary parameters as start and length causes an update of the output
waveform to the new parameters. When exiting the Arbitrary Menu by selecting a different waveform,
a message to save the Arbitrary wave will be displayed. Select YES or NO to save the new waveform.
This save functions the same as the SAVE ARB function.
Figure 3.6 - Arb Saving Menu
Arbitrary EDIT Menu
Enters data for creating arbitrary waveforms. You can enter data one point at a time, as a value at an
address, draw a line from one point (a value at an address) to another point, create a predefined
waveform, or combine these to create complex waveforms. The valid data values range is -8191 to
8191. The valid waveform memory addresses range from 1 to maximum memory length of instrument.
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The data value governs the output amplitude of that point of the waveform, scaled to the instrument
output amplitude. Therefore, a value of 8191 corresponds to positive peak amplitude, 0 corresponds to
the waveform offset, and -8191 corresponds to the negative peak amplitude. The following menu
displayed:
Figure 3.7 - Edit Menu
F1: Point - This menu allows point by point waveform editing. When selected, the following
menu is displayed:
Figure 3.8 - Point Editing Menu
F1: Adrs - Select the current address in the arbitrary waveform memory.
F2: Data - Selects the data point value at the current address. You can change the
point value from -8191 to 8191.
F5: Prev - Returns to the previous menu (Edit menu).
F2: Line - This menu allows a line drawing between two selected points. When selected, the
following menu is displayed:
F1: From - Selects the starting point address.
F2: To - Selects the ending point address.
F4: Prev - Displays the Confirmation menu, F1: NO and F3: YES.
F5: Prev - Returns to the previous menu (Edit menu).
F3: Predef - (Predefined Waveforms) Selects one of the predefined waveforms.
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Wave
Minimum
Length
Divisible by
Sine
16
4
Triangle
16
4
Square
2
2
Noise
16
1
Figure 3.9 - Predefine Waveform Menu
F1: Type - Selects the waveform Sine, Triangle, Square, Noise, Ramp up, Ramp
down, exponential up, exponential down, Sin(x)/x, and Gaussian distribution. If Noise
function is selected, a submenu is displayed when F5: EXEC is pressed to allow adding
the noise to an available waveform or to generate it as a new noise waveform.
F2: From/Data - Selects the starting point of the generated waveform and its data
value.
F3: Leng - Selects the length of the predefined waveform (number of points for a
full wave). The length value must be a number that is divisible by 4 or by
2 in some instances. If not, a pop up message will say “Must divide by 4”
or “Must divide by 2” and entered values will change back to its original.
Different waveforms have different limitations on the length. Refer to
Table 3-2 below.
Table 3.2 - Waveform Length Limits for Predefined Waveforms
F4: Scale - Selects the scale of the waveform. If scale is too high, a message will
display “Scale too high.” 100% means that the waveform spans the full
scale of -8191 to 8191. Scale factors are limited by the point data value of
the starting point and automatically calculated by the unit.
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Figure 3.10 - Scale Menu
F5: Exec - Prompts you to confirm whether to execute the selected predefined
waveform. Press NO to abort executing the predefined waveform; press
YES to execute the predefined waveform. On the NOISE function a menu
of ADD and NEW is prompted to select a new noise waveform or to add
noise to the existing waveform.
F4: More - Displays the following Menu:
F1: Copy - Displays the Copy menu (see the Copy Function later in this section).
F2: Clear - Displays the Clear menu (see the Clear Function later in this section).
F3: Prot - Displays the Protect menu (see the Protect Function later in this
section).
F4: Show Wave - Display the Arbitrary waveform in full screen mode on LCD display.
This is only an approximated display for quick viewing. It does not represent the exact
waveform being generated. To return back to the MENU selection, press any button.
F5: Prev - Returns to the previous menu.
Copy Function - Copies an area of waveform memory to another area of waveform memory.
F1: From - Selects the address of the first point to copy.
F2: Leng - Selects the length (number of points) of the waveform to copy.
F3: To - Selects the destination address where the first point is copied.
F4: Exec - Prompts to confirm to copy data. Press NO to abort copying, YES to copy.
F5: Prev - Returns to previous menu.
Clear Function - Clears (sets the data values to zero) either a section of or all of waveform memory.
F1: From - Selects the address of the first point to clear.
F2: To - Selects the address of the last point to clear.
F3: All - Clears the whole waveform memory.
F4: Exec - Prompts to confirm to clear data. Press NO to abort clearing, YES to
clear.
F5: Prev - Returns to previous menu.
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