Tektronix System 41 Mainframe,RF Modules Instruction Manual Rev. A Instruction Manual
System 41 Mainframe
and RF Modules
Instruction Manual
41MWS-901-01 Rev. A / 3-00
WARRANTY
Keithley Instruments, Inc. warrants this product to be free from defects in material and workmanship for a period of 1 year
from date of shipment.
Keithley Instruments, Inc. warrants the following items for 90 days from the date of shipment: probes, cables, rechargeable
batteries, diskettes, and documentation.
During the warranty period, we will, at our option, either repair or replace any product that proves to be defective.
To exercise this warranty, write or call your local Keithley representative, or contact Keithley headquarters in Cleveland, Ohio.
You will be given prompt assistance and return instructions. Send the product, transportation prepaid, to the indicated service
facility. Repairs will be made and the product returned, transportation prepaid. Repaired or replaced products are warranted for
the balance of the original warranty period, or at least 90 days.
LIMITATION OF WARRANTY
This warranty does not apply to defects resulting from product modification without Keithley’s express written consent, or
misuse of any product or part. This warranty also does not apply to fuses, software, non-rechargeable batteries, damage from
battery leakage, or problems arising from normal wear or failure to follow instructions.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY
IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES.
NEITHER KEITHLEY INSTRUMENTS, INC. NOR ANY OF ITS EMPLOYEES SHALL BE LIABLE FOR ANY DIRECT,
INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF ITS
INSTRUMENTS AND SOFTWARE EVEN IF KEITHLEY INSTRUMENTS, INC., HAS BEEN ADVISED IN ADVANCE
OF THE POSSIBILITY OF SUCH DAMAGES. SUCH EXCLUDED DAMAGES SHALL INCLUDE, BUT ARE NOT LIMITED TO: COSTS OF REMOVAL AND INSTALLATION, LOSSES SUSTAINED AS THE RESULT OF INJURY TO ANY
PERSON, OR DAMAGE TO PROPERTY.
Keithley Instruments, Inc.
BELGIUM: Keithley Instruments B.V.
CHINA: Keithley Instruments China
FRANCE: Keithley Instruments Sarl
GERMANY: Keithley Instruments GmbH
GREAT BRITAIN: Keithley Instruments Ltd
INDIA: Keithley Instruments GmbH
ITALY: Keithley Instruments s.r.l.
NETHERLANDS: Keithley Instruments B.V.
SWITZERLAND: Keithley Instruments SA
TAIWAN: Keithley Instruments Taiwan
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10/99
System 41 Mainframe and RF Modules
Instruction Manual
©2000, Keithley Instruments, Inc.
All rights reserved.
Cleveland, Ohio, U.S.A.
First Printing, March 2000
Document Number: 41MWS-901-01 Rev. A
Manual Print History
The print history shown below lists the printing dates of all Revisions and Addenda created for this manual. The Revision
Level letter increases alphabetically as the manual undergoes subsequent updates. Addenda, which are released between Revisions, contain important change information that the user should incorporate immediately into the manual. Addenda are numbered sequentially. When a new Revision is created, all Addenda associated with the previous Revision of the manual are
incorporated into the new Revision of the manual. Each new Revision includes a revised copy of this print history page.
Revision A (Document Number 41MWS-901-01)................................................................................ March 2000
All Keithley product names are trademarks or registered trademarks of Keithley Instruments, Inc.
Other brand and product names are trademarks or registered trademarks of their respective holders.
Safety Precautions
The following safety precautions should be observed before using
this product and any associated instrumentation. Although some instruments and accessories would normally be used with non-hazardous voltages, there are situations where hazardous conditions
may be present.
This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury. Read the operating information
carefully before using the product.
The types of product users are:
Responsible body
and maintenance of equipment, for ensuring that the equipment is
operated within its specifications and operating limits, and for ensuring that operators are adequately trained.
Operators
trained in electrical safety procedures and proper use of the instrument. They must be protected from electric shock and contact with
hazardous live circuits.
Maintenance personnel
to keep it operating, for example, setting the line voltage or replacing consumable materials. Maintenance procedures are described in
the manual. The procedures explicitly state if the operator may perform them. Otherwise, they should be performed only by service
personnel.
Service personnel
safe installations and repairs of products. Only properly trained service personnel may perform installation and service procedures.
is the individual or group responsible for the use
use the product for its intended function. They must be
perform routine procedures on the product
are trained to work on live circuits, and perform
Users of this product must be protected from electric shock at all
times. The responsible body must ensure that users are prevented
access and/or insulated from every connection point. In some cases,
connections must be exposed to potential human contact. Product
users in these circumstances must be trained to protect themselves
from the risk of electric shock. If the circuit is capable of operating
at or above 1000 volts,
exposed.
As described in the International Electrotechnical Commission
(IEC) Standard IEC 664, digital multimeter measuring circuits
(e.g., Keithley Models 175A, 199, 2000, 2001, 2002, and 2010) are
Installation Category II. All other instruments’ signal terminals are
Installation Category I and must not be connected to mains.
Do not connect switching cards directly to unlimited power circuits.
They are intended to be used with impedance limited sources.
NEVER connect switching cards directly to AC mains. When connecting sources to switching cards, install protective devices to limit fault current and voltage to the card.
Before operating an instrument, make sure the line cord is connected to a properly grounded power receptacle. Inspect the connecting
cables, test leads, and jumpers for possible wear, cracks, or breaks
before each use.
For maximum safety, do not touch the product, test cables, or any
other instruments while power is applied to the circuit under test.
ALWAYS remove power from the entire test system and discharge
any capacitors before: connecting or disconnecting cables or jumpers, installing or removing switching cards, or making internal
changes, such as installing or removing jumpers.
no conductive part of the circuit may be
Exercise extreme caution when a shock hazard is present. Lethal
voltage may be present on cable connector jacks or test fixtures. The
American National Standards Institute (ANSI) states that a shock
hazard exists when voltage levels greater than 30V RMS, 42.4V
peak, or 60VDC are present.
that hazardous voltage is present in any unknown circuit before
measuring.
A good safety practice is to expect
Do not touch any object that could provide a current path to the
common side of the circuit under test or power line (earth) ground.
Always make measurements with dry hands while standing on a
dry, insulated surface capable of withstanding the voltage being
measured.
The instrument and accessories must be used in accordance with its
specifications and operating instructions or the safety of the equipment may be impaired.
Do not exceed the maximum signal levels of the instruments and accessories, as defined in the specifications and operating information, and as shown on the instrument or test fixture panels, or
switching card.
The
WARNING
result in personal injury or death. Always read the associated information very carefully before performing the indicated procedure.
The
CAUTION
damage the instrument. Such damage may invalidate the warranty.
Instrumentation and accessories shall not be connected to humans.
heading in a manual explains dangers that might
heading in a manual explains hazards that could
When fuses are used in a product, replace with same type and rating
for continued protection against fire hazard.
Chassis connections must only be used as shield connections for
measuring circuits, NOT as safety earth ground connections.
If you are using a test fixture, keep the lid closed while power is applied to the device under test. Safe operation requires the use of a
lid interlock.
If a screw is present, connect it to safety earth ground using the
wire recommended in the user documentation.
!
The symbol on an instrument indicates that the user should refer to the operating instructions located in the manual.
The symbol on an instrument shows that it can source or measure 1000 volts or more, including the combined effect of normal
and common mode voltages. Use standard safety precautions to
avoid personal contact with these voltages.
Before performing any maintenance, disconnect the line cord and
all test cables.
To maintain protection from electric shock and fire, replacement
components in mains circuits, including the power transformer, test
leads, and input jacks, must be purchased from Keithley Instruments. Standard fuses, with applicable national safety approvals,
may be used if the rating and type are the same. Other components
that are not safety related may be purchased from other suppliers as
long as they are equivalent to the original component. (Note that selected parts should be purchased only through Keithley Instruments
to maintain accuracy and functionality of the product.) If you are
unsure about the applicability of a replacement component, call a
Keithley Instruments office for information.
To clean an instrument, use a damp cloth or mild, water based
cleaner. Clean the exterior of the instrument only. Do not apply
cleaner directly to the instrument or allow liquids to enter or spill
on the instrument. Products that consist of a circuit board with no
case or chassis (e.g., data acquisition board for installation into a
computer) should never require cleaning if handled according to instructions. If the board becomes contaminated and operation is affected, the board should be returned to the factory for proper
cleaning/servicing.
Rev. 10/99
S41/RF6X6 Matrix
RF PARAMETERS:
Frequency: DC–8GHz 8–18GHz
Insertion Loss: 2.5 dB max 4.0 dB max
VSWR: 1.5:1 2.0:1
Isolation: 70 dB min 60 dB min
SWITCH CONFIGURATION:Non-blocking coaxial matrix with six inputs
and six outputs.
IMPEDANCE: 50½.
ACTUA TION TIME:15ms.
RF CONTACTS:Break-before-make, normally open
OPERATING LIFE:1,000,000 operations, cold switched.
SUPPLIED ACCESSORIES
LIGHT PEN Provides interactive programming of channels, cross
points, scan lists, and memory.
OPTIONAL ACCESSORIES
8503 DIN to BNC Trigger Cable: Provides BNC connector
interface to hardware trigger lines.
S41-RMK-1 Fixed Rack Mount Kit: Enables rack mounting without
chassis support for one System 41 Mainframe.
ORDERING INFORMATION
S41/RF6X6 Non-blocking 6´6 RF coaxial matrix switch system
S41/RF6X6-T Test data on the RF module – must be purchased at the
same time the switch system is purchased
GENERAL
DISPLAY:Dual line vacuum fluorescent.
1st Line:20-character alphanumeric.
2nd Line: 32-character alphanumeric.
Channel status LED grid.
IEEE-488 BUS IMPLEMENTATION:Conforms to SCPI-1990,
IEEE-488.2 and IEEE-488.1.
REAR PANEL CONNECTORS:
SMA
IEEE-488
8-pin micro DIN for Trigger Link
8-pin micro DIN for Trigger Link expansion
POWER:100–240V AC universal input, 50-60Hz, 270VA maximum
STANDARDS:
Safety: Conforms with European Union Directive 73/23/EEC
EMC: Conforms with European Union Directive 89/336/EEC.
ENVIRONMENT:
Operating: 0°C to 50°C, <80% relative humidity (0°C to 35°C).
Storage: –25°C to +65°C.
DIMENSIONS,WEIGHT:178mm high ´ 482mm wide ´ 515mm deep
(7 in ´ 19 in ´ 20 in). Net weight 11kg (24 lbs).
RACK MOUNTING: Standard 19˝ rack shelf or chassis support angles.
Specifications subject to change without notice.
S41/RF1X72 M ultiplex er
RF PARAMETERS:
Frequency DC–8GHz 8–18GHz
Insertion Loss 1.0 dB max 2.5 dB max
VSWR 1.5:1 2.0:1
Isolation 70 dB min 60 dB min
SWITCH CONFIGURATION:One 1´72 or two 1´36 or fourteen 1´6 coax-
ial multiplexers when RF cables are removed.
IMPEDANCE: 50½.
ACTUA TION TIME:15ms
RF CONTACTS:Break-before-make, normally open
OPERATING LIFE:1,000,000 operations, cold switched.
SUPPLIED ACCESSORIES
LIGHT PEN Provides interactive programming of channels, cross
points, scan lists, and memory.
OPTIONAL ACCESSORIES
8503 DIN to BNC Trigger Cable: Provides BNC connector
interface to hardware trigger lines.
S41-RMK-1 Fixed Rack Mount Kit: Enables rack mounting without
chassis support for one System 41 Mainframe.
ORDERING INFORMATION
S41/RF1X72 1´72 RF coaxial multiplexer switch system
S41/RF1X72-T Test data on the RF module – must be purchased at the
same time the switch system is purchased
GENERAL
DISPLAY:Dual line vacuum fluorescent.
1st Line: 20-character alphanumeric.
2nd Line:32-character alphanumeric.
Channel status LED grid.
IEEE-488 BUS IMPLEMENTATION: Conforms to SCPI-1990,
IEEE-488.2 and IEEE-488.1.
REAR PANEL CONNECTORS:
SMA
IEEE-488
8-pin micro DIN for Trigger Link
8-pin micro DIN for Trigger Link expansion
POWER:100–240V AC universal input, 50–60Hz, 270VA maximum.
STANDARDS:
Safety: Conforms with European Union Directive 73/23/EEC.
EMC:Conforms with European Union Directive 89/336/EEC.
ENVIRONMENT:
Operating: 0°C to 50°C, <80% relative humidity (0°C to 35°C)
Storage: –25°C to +65°C
DIMENSIONS,WEIGHT:178mm high ´ 482mm wide ´ 515mm deep
(7 in ´ 19 in ´ 20 in). Net weight 10kg (21 lbs).
RACK MOUNTING: Standard 19˝ rack shelf or chassis support angles.
Specifications subject to change without notice.
S41/RF10X10 Matrix
RF PARAMETERS:
Frequency: DC–8GHz 8–18GHz
Insertion Loss: 3.5 dB max 5.5 dB max
VSWR: 1.5:1 2.0:1
Isolation: 70 dB min 60 dB min
SWITCH CONFIGURATION:Non-blocking coaxial matrix with ten inputs
and ten outputs.
IMPEDANCE: 50½.
ACTUA TION TIME:15ms.
RF CONTACTS:Break-before-make, normally open.
OPERATING LIFE:1,000,000 operations, cold switched.
SUPPLIED ACCESSORIES
LIGHT PEN Provides interactive programming of channels, cross
points, scan lists, and memory.
OPTIONAL ACCESSORIES
8503 DIN to BNC Trigger Cable: Provides BNC connector
interface to hardware trigger lines.
S41-RMK-1 Fixed Rack Mount Kit: Enables rack mounting without
chassis support for one System 41 Mainframe.
ORDERING INFORMATION
S41/RF10X10 Non-blocking 10´10 RF coaxial matrix switch system
S41/RF10X10-T T est data on the RF module – must be purchased at the
same time the switch system is purchased
GENERAL
DISPLAY:Dual line vacuum fluorescent.
1st Line: 20-character alphanumeric.
2nd Line: 32-character alphanumeric.
Channel status LED grid.
IEEE-488 BUS IMPLEMENTATION: Conforms to SCPI-1990,
IEEE-488.2 and IEEE-488.1.
REAR PANEL CONNECTORS:
SMA
IEEE-488
8-pin micro DIN for Trigger Link
8-pin micro DIN for Trigger Link expansion
POWER:100–240V AC universal input, 50–60Hz, 270VA maximum
STANDARDS:
Safety: Conforms with European Union Directive 73/23/EEC
EMC:Conforms with European Union Directive 89/336/EEC.
ENVIRONMENT:
Operating: 0°C to 50°C, <80% relative humidity (0°C to 35°C)
Storage: –25°C to +65°C
DIMENSIONS,WEIGHT:178mm high ´ 482mm wide ´ 515mm deep
(7 in ´ 19 in ´ 20 in). Net weight 15kg (33 lbs).
RACK MOUNTING: Standard 19˝ rack shelf or chassis support angles.
Specifications subject to change without notice.
1 General Information
Introduction ........................................................................................................................................................ 1-2
Features .............................................................................................................................................................. 1-2
Warranty information ......................................................................................................................................... 1-2
Manual addenda ................................................................................................................................................. 1-2
Safety symbols and terms ................................................................................................................................... 1-3
Specifications ..................................................................................................................................................... 1-3
Inspection ........................................................................................................................................................... 1-3
Optional accessories ........................................................................................................................................... 1-3
Table of Contents
2 Installation and Connections
Introduction ........................................................................................................................................................ 2-2
Installation .......................................................................................................................................................... 2-2
Rack mount ................................................................................................................................................ 2-3
Line power, GPIB, and trigger link connections ................................................................................................ 2-4
Line power ................................................................................................................................................. 2-4
GPIB ........................................................................................................................................................... 2-4
Trigger link ................................................................................................................................................ 2-4
SMA coaxial connections .................................................................................................................................. 2-5
SMA connector cleaning ............................................................................................................................ 2-5
SMA connector mating .............................................................................................................................. 2-5
3 Getting Started
Introduction ........................................................................................................................................................ 3-2
Power-up procedure ........................................................................................................................................... 3-3
Line power connections ............................................................................................................................. 3-3
Power switch .............................................................................................................................................. 3-3
Power-up sequence ..................................................................................................................................... 3-3
Cooling fan ................................................................................................................................................. 3-4
Front and rear panel configurations ................................................................................................................... 3-4
Front panel ................................................................................................................................................. 3-4
Rear panel .................................................................................................................................................. 3-6
Quick start .......................................................................................................................................................... 3-7
Restore defaults .......................................................................................................................................... 3-7
Open and close channel patterns ................................................................................................................ 3-7
Display modes .................................................................................................................................................... 3-8
Changing the display mode (keypad method) ............................................................................................ 3-9
i
Channel LEDs, patterns, and assignments ....................................................................................................... 3-10
Channel LEDs .......................................................................................................................................... 3-10
Channel patterns ....................................................................................................................................... 3-10
Channel assignments ................................................................................................................................ 3-10
Operation demos ............................................................................................................................................... 3-11
Restoring default settings ......................................................................................................................... 3-11
Demo — Close and open channels ........................................................................................................... 3-12
Front panel operation summary ........................................................................................................................ 3-13
Create channel list and/or scan list ........................................................................................................... 3-14
Close and open channel patterns .............................................................................................................. 3-15
Introduction to IEEE-488.2 and SCPI .............................................................................................................. 3-15
Bus connections ........................................................................................................................................ 3-16
Primary address ........................................................................................................................................ 3-16
Abbreviated common command summary ............................................................................................... 3-16
Abbreviated SCPI command summary .................................................................................................... 3-16
Abbreviated syntax rules .......................................................................................................................... 3-17
Programming example .............................................................................................................................. 3-19
4 RF Modules
Introduction ........................................................................................................................................................ 4-2
Model RF6X6 module ........................................................................................................................................ 4-2
Overview .................................................................................................................................................... 4-2
Connections ................................................................................................................................................ 4-3
Switch control ............................................................................................................................................. 4-4
Channel pattern memory ............................................................................................................................ 4-6
Model RF10X10 module .................................................................................................................................... 4-9
Overview .................................................................................................................................................... 4-9
Connections .............................................................................................................................................. 4-10
Switch control ........................................................................................................................................... 4-11
Channel pattern memory .......................................................................................................................... 4-14
Model RF1X72 module .................................................................................................................................... 4-18
Overview .................................................................................................................................................. 4-18
Connections .............................................................................................................................................. 4-20
Switch control ........................................................................................................................................... 4-20
Channel pattern memory .......................................................................................................................... 4-23
5 Front Panel Operation
Introduction ........................................................................................................................................................ 5-2
Front panel displays ............................................................................................................................................ 5-3
Vacuum fluorescent display (VFD) ............................................................................................................ 5-3
LED display ................................................................................................................................................ 5-6
Light pen ............................................................................................................................................................. 5-7
Light pen connection .................................................................................................................................. 5-7
Light pen operations ................................................................................................................................... 5-7
Light pen messages ..................................................................................................................................... 5-9
Display modes .................................................................................................................................................... 5-9
Relay status display mode .......................................................................................................................... 5-9
Changing the display mode ...................................................................................................................... 5-12
LED graticule control ............................................................................................................................... 5-13
ii
Channel list and scan list .................................................................................................................................. 5-13
Channel patterns ....................................................................................................................................... 5-14
Channel assignments ................................................................................................................................ 5-15
Editing a list ............................................................................................................................................. 5-17
Using the light pen ................................................................................................................................... 5-18
Closing and opening channels .......................................................................................................................... 5-19
Overview of scan process ................................................................................................................................. 5-21
Scan channel patterns ............................................................................................................................... 5-23
Storing and recalling channel patterns ............................................................................................................. 5-24
Storing channel patterns (STORE) ........................................................................................................... 5-24
Recalling channel patterns (RECALL) .................................................................................................... 5-25
MENU .............................................................................................................................................................. 5-25
SAVESETUP ........................................................................................................................................... 5-27
GPIB ......................................................................................................................................................... 5-29
DIGITAL I/O ........................................................................................................................................... 5-29
TEST ........................................................................................................................................................ 5-29
LANGUAGE ........................................................................................................................................... 5-30
GENERAL ............................................................................................................................................... 5-30
Card configuration ........................................................................................................................................... 5-33
TYPE ........................................................................................................................................................ 5-34
# OF POLES ............................................................................................................................................ 5-34
CARD PAIR ............................................................................................................................................ 5-34
DELAY .................................................................................................................................................... 5-34
READ I/O CARD .................................................................................................................................... 5-35
Scan configuration ........................................................................................................................................... 5-35
CHAN CONTROL .................................................................................................................................. 5-37
SCAN CONTROL ................................................................................................................................... 5-41
ARM CONTROL ..................................................................................................................................... 5-43
Channel restrictions .................................................................................................................................. 5-45
External triggering (Trigger Link) ................................................................................................................... 5-47
Asynchronous operation .......................................................................................................................... 5-47
Semi-synchronous operation .................................................................................................................... 5-48
Trigger link connections .......................................................................................................................... 5-48
6 IEEE-488 Reference
Introduction ........................................................................................................................................................ 6-2
IEEE-488 bus connections ................................................................................................................................. 6-3
Primary address selection ................................................................................................................................... 6-6
General bus commands ...................................................................................................................................... 6-7
REN (remote enable) .................................................................................................................................. 6-7
IFC (interface clear) ................................................................................................................................... 6-7
LLO (local lockout) ................................................................................................................................... 6-7
GTL (go to local) ....................................................................................................................................... 6-8
DCL (device clear) ..................................................................................................................................... 6-8
SDC (selective device clear) ...................................................................................................................... 6-8
GET (group execute trigger) ...................................................................................................................... 6-8
SPE, SPD (serial polling) ........................................................................................................................... 6-8
Front panel aspects of IEEE-488 operation ....................................................................................................... 6-9
Error and status messages .......................................................................................................................... 6-9
IEEE-488 status indicators ......................................................................................................................... 6-9
LOCAL key ................................................................................................................................................ 6-9
iii
Status structure ................................................................................................................................................... 6-9
Standard event status ................................................................................................................................ 6-11
Operation event status .............................................................................................................................. 6-13
Arm event status ....................................................................................................................................... 6-16
Sequence event status ............................................................................................................................... 6-19
Trigger event status .................................................................................................................................. 6-22
Questionable event status ......................................................................................................................... 6-25
Queues ...................................................................................................................................................... 6-28
Status byte and service request (SRQ) ..................................................................................................... 6-29
Trigger Model (IEEE-488 operation) ............................................................................................................... 6-31
Idle and initiate ......................................................................................................................................... 6-33
Arm layer1 ................................................................................................................................................ 6-33
Arm layer2 ................................................................................................................................................ 6-34
Trigger layer ............................................................................................................................................. 6-35
Programming syntax ......................................................................................................................................... 6-37
Command words ....................................................................................................................................... 6-37
Program messages .................................................................................................................................... 6-40
Response messages ................................................................................................................................... 6-42
Message exchange protocol ...................................................................................................................... 6-42
Common commands ......................................................................................................................................... 6-43
SCPI command subsystems ...................................................................................................................... 6-58
:DISPlay subsystem .......................................................................................................................................... 6-58
:TEXT commands .................................................................................................................................... 6-59
:ROUTe] subsystem ......................................................................................................................................... 6-63
:INTerlock:LIST commands .................................................................................................................... 6-67
:CONFigure Commands: .......................................................................................................................... 6-69
:MEMory Commands: .............................................................................................................................. 6-73
STATus subsystem ........................................................................................................................................... 6-75
:QUEue commands ................................................................................................................................... 6-92
:SYSTem subsystem ......................................................................................................................................... 6-94
Trigger subsystem ............................................................................................................................................ 6-96
:INITiate commands ................................................................................................................................. 6-98
TCONfigure commands ......................................................................................................................... 6-103
7 Maintenance
Introduction ........................................................................................................................................................ 7-2
Power-up tests .................................................................................................................................................... 7-2
Power line fuse replacement ............................................................................................................................... 7-2
Cooling fan ......................................................................................................................................................... 7-3
Non-volatile memory test ................................................................................................................................... 7-3
Display tests ........................................................................................................................................................ 7-4
Keys test ..................................................................................................................................................... 7-4
Patterns test ................................................................................................................................................. 7-4
LED board test ............................................................................................................................................ 7-5
Char set test ................................................................................................................................................ 7-6
A Interface Function Codes
B ASCII Character Codes and IEEE-488 Multiline Interface
Command Messages
iv
C IEEE-488 Bus Overview
Introduction ....................................................................................................................................................... C-2
Bus Description ................................................................................................................................................. C-2
Bus Lines ........................................................................................................................................................... C-4
Data lines ................................................................................................................................................... C-4
Bus management lines .............................................................................................................................. C-4
Handshake lines ........................................................................................................................................ C-4
Bus Commands ................................................................................................................................................. C-5
Uniline commands .................................................................................................................................... C-6
Universal multiline commands ................................................................................................................. C-7
Addressed multiline commands ................................................................................................................ C-7
Address commands ................................................................................................................................... C-7
Unaddress commands ............................................................................................................................... C-8
Common commands ................................................................................................................................. C-8
SCPI commands ........................................................................................................................................ C-8
Command codes ........................................................................................................................................ C-8
Typical command sequences ................................................................................................................... C-10
IEEE command groups ........................................................................................................................... C-11
D IEEE-488 Conformance Information
Information ........................................................................................................................................................ D-2
E SCPI Conformance Information
Introduction ........................................................................................................................................................ E-2
F IEEE-488.2 Common Commands
v
vi
List of Illustrations
3 Getting Started
Figure 3-1 System 41 front panel ................................................................................................................................ 3-5
Figure 3-2 System 41 rear panel .................................................................................................................................. 3-6
Figure 3-3 Relay status display mode .......................................................................................................................... 3-8
Figure 3-4 List display modes ..................................................................................................................................... 3-9
Figure 3-5 Status interpretation of channel LEDs ....................................................................................................... 3-9
Figure 3-6 Channel assignment format ...................................................................................................................... 3-10
Figure 3-7 Channel assignments ................................................................................................................................ 3-11
4 RF Modules
Figure 4-1 Model RF6X6 simplified diagram ............................................................................................................. 4-3
Figure 4-2 Model RF10X10 simplified diagram ....................................................................................................... 4-10
Figure 4-3 Model RF1X72 simplified diagram ......................................................................................................... 4-19
Figure 4-4 Model RF1X72 connections .................................................................................................................... 4-20
5 Front Panel Operation
Figure 5-1 Vacuum fluorescent display (VFD) ........................................................................................................... 5-3
Figure 5-2 LED display ............................................................................................................................................... 5-6
Figure 5-3 VFD relay status mode ............................................................................................................................. 5-10
Figure 5-4 Interpreting channel LEDs (relay status display mode) ........................................................................... 5-10
Figure 5-5 VFD list display modes ............................................................................................................................ 5-11
Figure 5-6 Interpreting channel LEDs (list display mode) ........................................................................................ 5-12
Figure 5-7 Channel assignments ................................................................................................................................ 5-16
Figure 5-8 Simplified model of scan operation ......................................................................................................... 5-21
Figure 5-9 Asynchronous trigger input pulse specifications ..................................................................................... 5-47
Figure 5-10 Asynchronous trigger output pulse specifications ................................................................................... 5-48
Figure 5-11 Semi-synchronous trigger link pulse specifications ................................................................................. 5-48
Figure 5-12 Trigger link connectors ............................................................................................................................ 5-49
vii
6 IEEE-488 Reference
Figure 6-1 IEEE-488 connector ................................................................................................................................... 6-3
Figure 6-2 IEEE-488 connections ................................................................................................................................ 6-3
Figure 6-3 IEEE-488 connector location ..................................................................................................................... 6-4
Figure 6-4 Contact configuration ................................................................................................................................. 6-5
Figure 6-5 System 41 status register structure ........................................................................................................... 6-10
Figure 6-6 Standard event status ................................................................................................................................ 6-11
Figure 6-7 Operation event status .............................................................................................................................. 6-13
Figure 6-8 Arm event status ....................................................................................................................................... 6-16
Figure 6-9 Sequence event status ............................................................................................................................... 6-19
Figure 6-10 Trigger event status .................................................................................................................................. 6-22
Figure 6-11 Questionable event status ......................................................................................................................... 6-25
Figure 6-12 Status byte and service request (SRQ) ..................................................................................................... 6-29
Figure 6-13 Trigger Model (IEEE-488 bus operation) ................................................................................................ 6-32
Figure 6-14 Standard Event Status Enable Register .................................................................................................... 6-46
Figure 6-15 Standard Event Status Register ................................................................................................................ 6-48
Figure 6-16 Service Request Enable Register .............................................................................................................. 6-54
Figure 6-17 Status Byte Register ................................................................................................................................. 6-56
Figure 6-18 Operation Event Register ......................................................................................................................... 6-77
Figure 6-19 Trigger Event Register ............................................................................................................................. 6-78
Figure 6-20 Arm Event Register .................................................................................................................................. 6-78
Figure 6-21 Sequence Event Register .......................................................................................................................... 6-79
Figure 6-22 Questionable Event Register .................................................................................................................... 6-79
Figure 6-23 Operation Event Enable Register ............................................................................................................. 6-81
Figure 6-24 Trigger Event Enable Register ................................................................................................................. 6-81
Figure 6-25 Arm Event Enable Register ...................................................................................................................... 6-82
Figure 6-26 Sequence Event Enable Register .............................................................................................................. 6-82
Figure 6-27 Questionable Event Enable Register ........................................................................................................ 6-82
Figure 6-28 Operation Transition Filter ....................................................................................................................... 6-84
Figure 6-29 Trigger Transition Filter ........................................................................................................................... 6-85
Figure 6-30 Arm Transition Filter ................................................................................................................................ 6-86
Figure 6-31 Sequence Transition Filter ........................................................................................................................ 6-87
Figure 6-32 Questionable Transition Filter .................................................................................................................. 6-88
7 Maintenance
Figure 7-1 First pattern for display test ........................................................................................................................ 7-4
C IEEE-488 Bus Overview
Figure C-1 IEEE-488 bus configuration ...................................................................................................................... C-3
Figure C-2 IEEE-488 handshake sequence .................................................................................................................. C-5
Figure C-3 Command codes ........................................................................................................................................ C-9
viii
List of Tables
3 Getting Started
Table 3-1 Abbreviated common command summary .............................................................................................. 3-16
Table 3-2 Abbreviated SCPI command summary .................................................................................................... 3-17
4 RF Modules
Table 4-1 Model RF6X6 — pre-programmed channel patterns ................................................................................. 4-5
Table 4-2 Model RF6X6 — commands to store channel patterns in memory ........................................................... 4-8
Table 4-3 Model RF10X10 — pre-programmed channel patterns ........................................................................... 4-12
Table 4-4 Model RF10X10 — commands to store channel patterns in memory ..................................................... 4-16
Table 4-5 Model RF1X72 — pre-programmed channel patterns ............................................................................. 4-21
Table 4-6 Model RF1X72 — commands to store channel patterns in memory ....................................................... 4-25
5 Front Panel Operation
Table 5-1 Error and status messages .......................................................................................................................... 5-4
Table 5-2 Significance of channel LEDs .................................................................................................................... 5-8
Table 5-3 MENU structure ....................................................................................................................................... 5-26
Table 5-4 Default conditions .................................................................................................................................... 5-28
Table 5-5 CARD CONFIG MENU structure ........................................................................................................... 5-33
Table 5-6 CONFIGURE SCAN menu structure ...................................................................................................... 5-36
6 IEEE-488 Reference
Table 6-1 IEEE contact designations ......................................................................................................................... 6-5
Table 6-2 General bus commands .............................................................................................................................. 6-7
Table 6-3 IEEE-488.2 common commands and queries .......................................................................................... 6-43
Table 6-4 Default conditions .................................................................................................................................... 6-52
Table 6-5 DISPlay command summary ................................................................................................................... 6-58
Table 6-6 ROUTe command summary .................................................................................................................... 6-63
Table 6-7 STATus command summary ................................................................................................................... 6-75
Table 6-8 SYSTem command summary .................................................................................................................. 6-94
Table 6-9 Trigger command summary ..................................................................................................................... 6-96
A Interface Function Codes
Table A-1 System 41 interface function codes ........................................................................................................... A-3
ix
C IEEE-488 Bus Overview
Table C-1 IEEE-488 bus command summary ............................................................................................................ C-6
Table C-2 Hexadecimal and decimal command codes ............................................................................................. C-10
Table C-3 Typical addressed command sequence .................................................................................................... C-10
Table C-4 Typical common command sequence ..................................................................................................... C-10
Table C-5 IEEE command groups ............................................................................................................................ C-11
D IEEE-488 Conformance Information
Table D-1 IEEE-488 documentation requirements .................................................................................................... D-2
E SCPI Conformance Information
Table E-1 Syntax of SCPI confirmed commands implemented by System 41 .......................................................... E-2
Table E-2 Syntax of non-SCPI commands implemented by System 41 .................................................................... E-5
x
1
General Information
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1-2 General Information System 41 Mainframe and RF Modules Instruction Manual
Introduction
This section contains general information about the System 41.
Features
Warranty Information
Manual Addenda
Safety Symbols and Terms
Specifications
Inspection
Optional Accessories
Features
Some important System 41 features include:
High Density Switching The System 41 can control up to 240 RF switch contacts.
RF Modules RF modules available for the System 41 include the Models RF6 × 6 and
RF10 × 10 (which are full access non-blocking coaxial matrices), and the Model RF1 × 72
(which is a coaxial multiplexer.
Close/Open or Scan The System 41 can simply close and/or open one or more channel
patterns, or scan through a specified list of channel patterns.
Channel LED Display The real-time LED display monitors the state (closed or open) of
all available channels.
Memory Pre-programmed channel patterns are saved in memory to accommodate all
input/output combinations for the installed RF module. Also, ten customized instrument setups can be saved in memory for later recall.
IEEE-488 Bus Bus operation conforms to the IEEE-488.2 and SCPI standards.
Trigger Link Allows the System 41 to trigger (or be triggered by) one or more external
instruments.
A light pen provides point and click programming from the front panel.
Warranty information
Warranty information is located on the inside front cover of this instruction manual. Should your
System 41 require warranty service, contact the Keithley representative or authorized repair
facility in your area for further information. When returning the instrument for repair, be sure to
fill out and include the service form at the back of this manual in order to provide the repair
facility with the necessary information.
Manual addenda
Any improvements or changes concerning the instrument or manual will be explained in an
addendum included with the manual. Be sure to note these changes and incorporate them into
the manual.
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System 41 Mainframe and RF Modules Instruction Manual General Information 1-3
Safety symbols and terms
The following symbols and terms may be found on an instrument or used in this manual.
Specifications
Inspection
The symbol
tions located in the instruction manual.
The symbol on an instrument shows that high voltage may be present on the terminal(s).
Use standard safety precautions to avoid personal contact with these voltages.
The WARNING heading used in this manual explains dangers that might result in personal
injury or death. Always read the associated information very carefully before performing the
indicated procedure.
The CAUTION heading used in this manual explains hazards that could damage the instruments. Such damage may invalidate the warranty.
System 41 specifications may be found at the front of this manual.
The System 41 was carefully inspected, both electrically and mechanically before shipment.
After unpacking all items from the shipping carton, check for any obvious signs of physical
damage that may have occurred during transit. Report any damage to the shipping agent immediately. Save the original packing carton for possible future reshipment. The following items are
included with every System 41 order:
!
on an instrument indicates that the user should refer to the operating instruc-
System 41
System 41 Instruction Manual
Accessories as ordered.
If an additional instruction manual is required, order the manual package, Keithley part number
41MWS-901-00. The manual package includes an instruction manual and any pertinent
addenda.
Optional accessories
The following accessories are available from Keithley for use with the System 41.
Model S41-RMK-1 Fixed Rack Mount Kit: Mounts a System 41 to a standard 19-inch rack.
Model 8503 DIN to BNC Trigger Cable: Allows you to connect the trigger link to an external
instrument that uses two BNC connectors for external triggering.
Models 8501-1 and 8501-2 Trigger Link Cables: The Model 8501-1 is one meter in length, and
the Model 8501-2 is two meters in length.
Model 7007 Shielded IEEE-488 Cables: Connects the System 41 to the IEEE-488 bus using
shielded cables to reduce electromagnetic interference (EMI). The Model 7007-1 is one meter in
length and has an EMI shielded IEEE-488 connector at each end. The Model 7007-2 is identical
to the Model 7007-1, but is two meters in length.
1-4 General Information System 41 Mainframe and RF Modules Instruction Manual
2
Installation
and Connections
2-2 Installation and Connections System 41 Mainframe and RF Modules Instruction Manual
Introduction
Information in this section is organized as follows:
•
Installation
•
Line power, GPIB and trigger link connections
41 to line power, how to make connections for the GPIB, and how to make connections for
external triggering.
•
SMA coaxial connections
connect your test cables to the System 41.
— Explains how to mount the System 41 in a standard 19-inch equipment rack.
— Summarizes how to connect the System
— Provides tips to clean SMA connections, and explains how to
Installation
The System 41 must be installed in a standard 19-inch metal equipment rack. The rack must be
connected to a known earth ground.
General installation guidelines
In order to meet EN 55022, Class A Radiated Emissions levels, all components in your RF test
system require the following:
•
All components must be mounted in a metal enclosure or the equivalent. All surfaces of the
enclosure must be adequately grounded to adjacent surfaces to provide electrical conductivity. Cables external to the enclosures must be in metal conduit or the equivalent. Using
shielded cables and power line filtering is equivalent to using metal conduit.
•
The conduit (shielded coaxial cable) must be connected to the enclosures using standard procedures and hardware to ensure electrical conductivity between the enclosures and conduit.
CAUTION
To avoid back injury, use two or more people to lift and move the
System 41.
System 41 Mainframe and RF Modules Instruction Manual Installation and Connections 2-3
Rack mount
A System 41 can be mounted into a standard 19-inch equipment rack using user-supplied angle
support brackets, shelf, or Model S41-RMK-1 Fixed Rack Mounting Kit.
Angle support brackets
using user-supplied angle support brackets or shelf:
1. Select a position in the rack. The System 41 typically takes up 7 inches of vertical space.
NOTE
2. Install the angle support brackets to the rack and secure them.
3. Lift the System 41 onto the support brackets and slide it into the rack. The four slotted
mounting holes in the front panel dictate the location of the captive nut fasteners on the front
rack rails. Mark where the supplied fasteners are to be installed, and remove the System 41
from the rack.
4. Install four #10 captive nut fasteners to the front rack rails. Position them such that the captive nuts are located behind the holes of the front rack rails.
5. Lift the System 41 onto the support brackets and slide it into the rack. Secure the chassis to
the front rack flanges with four 10-32 × ⅝ inch Phillips pan head screws.
Model S41-RMK-1 Fixed Rack Mount Kit — The following steps summarize rack mounting a
System 41. For detailed installation information, see the packing list that is included with the kit.
1. Select a position in the rack. The System 41 typically takes up 7 inches of vertical space.
NOTE The chassis must be mounted at a height that is an increment of 1¾ inch
The chassis must be mounted at a height that is an increment of 1
from the top or bottom of the rack. Attempting to mount the mainframe
at a non-incremental height will lead to difficulties with hole alignment.
from the top or bottom of the rack. Attempting to mount the mainframe
at a non-incremental height will lead to difficulties with hole alignment.
— Perform the following steps to mount the System 41 into the rack
¾ inch
2. Hold up the System 41 at the selected location in the rack. The four slotted mounting holes in
the front panel dictate the location of the captive nut fasteners on the front rack rails. Mark
where the supplied fasteners are to be installed.
3. Install the four fasteners so the captive nuts are located behind the appropriate holes on the
front rack rails.
4. Loosely attach the two rear support brackets to the sides of the mainframe. Each bracket is
secured using two supplied screws.
5. Position the mainframe in the rack to adjust the support brackets, and note the location for
the four captive nut fasteners on the rear rack rails.
6. Install the four fasteners so the captive nuts are located behind the appropriate holes on the
rear rack rails.
7. Loosely mount the mainframe to the front and rear rack rails using 10-32 × ⅝ inch screws.
Secure the rear support brackets to the chassis.
8. Tighten all screws.
2-4 Installation and Connections System 41 Mainframe and RF Modules Instruction Manual
Line power, GPIB, and trigger link connections
WARNING Before beginning any connection procedure, make sure the power
switch, which is located on the rear panel, is in the off (0) position.
Line power
NOTE Details on power-up are provided in Section 3, “Power-up procedure.”
The power module (located on the rear panel of the mainframe) has the AC line power receptacle
and the power switch.
With the power switch in the off (0) position, connect the supplied line cord to the AC receptacle
on the rear and connect the other end to a grounded AC outlet. There are no line voltage settings
for the System 41. It is sensed and set automatically.
GPIB
For GPIB operation, you will have to connect a Model 7007 IEEE-488 cable to the System 41
and to the IEEE-488 interface in your computer.
Trigger link
NOTE Details on IEEE-488 connections and all aspects of GPIB operation are
provided in Section 6.
The IEEE-488 connector is located on the rear panel of the System 41. Connect either end of the
cable to this connector, and connect the other end to the IEEE-488 connector on your computer.
If you are going to use external triggering in your test system, you will have to connect a Model
8501 trigger link cable from the System 41 to the external instrument that will be sending and/or
receiving triggers.
NOTE Details on trigger link connections and all aspects of external triggering
are provided in Section 5, “External triggering (Trigger Link).”
There are two trigger link connectors located on the rear panel of the System 41. Connect either
end of the trigger link cable to either one of the trigger link connectors. Connect the other end of
the trigger link cable to the other instrument. The other trigger link connector can be connected
to a second external instrument using another Model 8501 trigger link cable.
If the external instrument(s) use BNC connectors for external triggering (one for input triggers,
one for output triggers), you can use the Model 8503 adapter to make the connections.
System 41 Mainframe and RF Modules Instruction Manual Installation and Connections 2-5
SMA coaxial connections
CAUTION Before making any connections to the SMA connectors on the
System 41, you should be familiar with basic operation as explained
in Section 3, “Getting Started”. It is recommended that you perform
the operation demos (Section 3, “Operation demos”) before making
any SMA connections.
The System 41 uses SMA coaxial connectors suitable for the specified operating frequency
range. These input and output connectors are located on the rear panel.
NOTE Connection information that is specific to the installed RF module is
provided in Section 4.
Mating connectors must be clean, must meet connector type interface specifications, and must
be tightened to the appropriate torque specifications.
SMA connector cleaning
WARNING Contact with exposed conductors carrying RF power may cause
burns. Make sure all power is off before cleaning SMA connectors.
System 41 SMA connectors and mating connectors on your test cables must be free of foreign
material to prevent performance degradation. Visually inspect the connector using a 4× to 10×
magnifying lens. Try to blow foreign material off the connector using canned air (canned air is
recommended due to the presence of moisture and oils in air supplied by standard industrial
compressors). Use a lint free miniature cleaning swab moistened with clean isopropyl alcohol to
wipe off any remaining foreign material.
SMA connector mating
WARNING Contact with exposed conductors carrying RF power may cause
CAUTION Mating connectors with out of tolerance pin depths may destroy the
1. Remove all power from your test system.
2. Remove the protective cap from the SMA connector and save for future use. Keep the caps
on all unused connectors.
3. Connect your test cable and tighten using a 5/16 inch torque wrench to 7-10 inch-lb.
CAUTION Application of excessive torque may damage the SMA connector.
burns. Make sure all power is off before connecting test cables. All
cables should be properly mated and shielded.
connector. Verify pin depth before mating connectors.
2-6 Installation and Connections System 41 Mainframe and RF Modules Instruction Manual
3
Getting Started
3-2 Getting Started System 41 Mainframe and RF Modules Instruction Manual
Introduction
CAUTION The RF switches for the standard switching modules are designed
for cold switching. Hot switching (especially above 1W) may
degrade performance and shorten the life of the switches. If hot
switching is required, please consult Keithley Instruments for a customized switching module which incorporates switches specially
designed for hot switching applications.
NOTE Switching procedures in this manual use cold switching. That is, the sig-
nal is removed before a switch is closed or opened. However, for low
power applications, the RF switches are rated to hot switch up to 1W.
This section contains introductory information on using your System 41 Switch System. For
detailed front panel and IEEE-488 bus operation, refer to Sections 5 and 6, respectively.
Section 4 provides reference information for the installed RF module.
The information in this section is arranged as follows:
• Power-up procedure — Covers information on connecting the instrument to line power, the
power-up sequence, and the cooling fan.
• Front and rear panel configuration — Summarizes the controls, light pen receptacle, and
the two displays on the front panel of the instrument.
• Light pen — Summarizes the basic operations that can be performed with the optional light
pen.
• Display modes — Covers the two basic display modes and explains how to toggle from one
display mode to the other.
• Channel LEDs, patterns, and assignments — Shows how the status LEDs correspond to
the switch channels, and explains the two formats to specify channels to be opened/closed or
scanned.
• Operation demos — Demonstrates basic operation using channel patterns. Recommended
for first time users.
• Front panel operation summary — Summarizes the general procedures to open/close
channel patterns and scan channel patterns.
• Introduction to IEEE-488.2 and SCPI — Discusses some fundamental information con-
cerning operation over the IEEE-488 bus.
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