Keithley 7002 User Manual

Model 7002 Switch System

Instruction Manual

A GREATER MEASURE OF CONFIDENCE

W ARRANTY

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 Cle veland, 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.

LIMIT A TION OF W ARRANTY

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.

Sales Offices: BELGIUM: Bergensesteenweg 709 • B-1600 Sint-Pieters-Leeuw • 02-363 00 40 • Fax: [phone]

CHINA: Yuan Chen Xin Building, Room 705 • 12 Yumin Road, Dewai, Madian • Beijing 100029 • 8610-6202-2886 • Fax: [phone]
FINLAND: Tietäjäntie 2 • 02130 Espoo • Phone: [phone] • Fax: [phone]
FRANCE: 3, allée des Garays • 91127 Palaiseau Cédex • 01-64 53 20 20 • Fax: [phone]
GERMANY: Landsberger Strasse 65 • 82110 Germering • 089/84 93 07-40 • Fax: [phone]
GREAT BRITAIN: Unit 2 Commerce Park, Brunel Road • Theale • Berkshire RG7 4AB • 0118 929 7500 • Fax: [phone]
INDIA: Flat 2B, Willocrissa • 14, Rest House Crescent • Bangalore 560 001 • 91-80-509-1320/21 • Fax: [phone]
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NETHERLANDS: Postbus 559 • 4200 AN Gorinchem • 0183-635333 • Fax: [phone]
SWEDEN: c/o Regus Business Centre • Frosundaviks Allé 15, 4tr • 169 70 Solna • 08-509 04 679 • Fax: [phone]
SWITZERLAND: Kriesbachstrasse 4 • 8600 Dübendorf • 01-821 94 44 • Fax: [phone]
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28775 Aurora Road • Cleveland, Ohio 44139 • 440-248-0400 • Fax: [phone]

1-888-KEITHLEY (534-8453) • www.keithley.com

© Copyright 2001 Keithley Instruments, Inc.

Printed in the U.S.A.

11/01

Model 7002 Switch System Instruction Manual

©1993, Keithley Instruments, Inc.

All rights reserved.

Cleveland, Ohio, U.S.A.

January 2002, Fourth Printing

Document Number: 7002-901-01 Rev. D

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 7002-901-01)................................................................................ March 1993

Addendum A (Document Number 7002-901-02) ..............................................................................June 1993

Revision B (Document Number 7002-901-01)....................................................................................June 1993

Addendum B (Document Number 7002-901-02)............................................................................. April 1995

Addendum B (Document Number 7002-901-03)........................................................................... March 1996

Addendum F (Document Number 7001-901-04)....................................................................September 1996

Revision C (Document Number 7002-901-01) ........................................................................September 1998

Revision D (Document Number 7002-901-01) .............................................................................January 2002

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 and follow all installation,
operation, and maintenance information carefully before using the
product. Refer to the manual for complete product specifications.

If the product is used in a manner not specified, the protection pro­vided by the product may be impaired.

The types of product users are:

Responsible body is the individual or group responsible for the use

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 use the product for its intended function. They must be

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 perform routine procedures on the product

to keep it operating properly, 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 are trained to work on live circuits, and perform

safe installations and repairs of products. Only properly trained ser­vice personnel may perform installation and service procedures.

Keithley products are designed for use with electrical signals that
are rated Installation Category I and Installation Category II, as de­scribed in the International Electrotechnical Commission (IEC)
Standard IEC 60664. Most measurement, control, and data I/O sig­nals are Installation Category I and must not be directly connected
to mains voltage or to voltage sources with high transient over -volt­ages. Installation Category II connections require protection for
high transient over-voltages often associated with local AC mains
connections. Assume all measurement, control, and data I/O con­nections are for connection to Category I sources unless otherwise
marked or described in the Manual.

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

Operators of this product must be protected from electric shock at
all times. The responsible body must ensure that operators are pre­vented access and/or insulated from every connection point. In
some cases, connections must be exposed to potential human con­tact. Product operators 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,

the circuit may be exposed.

For rack mount equipment in which the power cord is not accessi­ble, in the event of fire or other catastrophic failure, the user must
provide a separate power disconnect switch.

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.

When installing equipment where access to the main power cord is
restricted, such as rack mounting, a separate main input power dis­connect device must be provided, in close proximity to the equip­ment and within easy reach of the operator.

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.

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.

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.

no conductive part of

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.

The

WARNING heading in a manual explains dangers that might

result in personal injury or death. Alw ays read the associated infor ­mation very carefully before performing the indicated procedure.

The

CAUTION heading in a manual explains hazards that could

damage the instrument. Such damage may invalidate the warranty.
Instrumentation and accessories shall not be connected to humans.
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.

11/01

HW 9/12/01

Rev. C

SYSTEM

CAPACITY: 10 plug-in cards per mainframe.
MEMORY:Battery backed-up storage for 500 switch patterns.
SWITCH SETTLING TIME: Automatically selected by the

mainframe. For different switchcards, 7002 will be set to
the slowest relay settling time. Additional time from 0 to

99999.999 seconds can be added in 1ms increments.

TRIGGER SOURCES:

External Trigger (TTL-compatible,

600ns minimum pulse, rear panel BNC).
IEEE-488 bus (GET, *TRG)
Trigger Link
Manual (front panel)
Internal Timer, programmable from 1.0ms to 99999.999

seconds in 1.0ms increments.

STATUS OUTPUT: Channel Ready (TTL-compatible signal,

rear panel BNC). Low going pulse (10µs typical) issued
after relay settling time.

S

WITCHING SEQUENCE: Break-before-make (programmable).

MAINFRAME DIGITAL I/O: 4 open collector outputs (30V

maximum, 100mA maximum sink current, 10Ω output
impedance), 1 TTL compatible input, 1 common, 1+5V.

RELAY DRIVE: 3.5A maximum for all 10 card slots.
CARD SIZE: 32mm high × 114mm wide × 272mm long

(1¼ in × 4½ in × 10¾ in).

CARD COMPATIBILITY: Fully compatible with all 7001 cards.

ANALOG BACKPLANE

SIGNALS: Four 3-pole rows (Hi, Lo, Guard). These signals

provide matrix and multiplexer expansion between cards
within one mainframe.

MAXIMUM VOLTAGE: 250V DC, 250V RMS, 350V AC peak,

signal path to signal path or signal path to chassis.

MAXIMUM CURRENT: 1A peak.
PATH ISOLATION:

>1010Ω, <50pF path to path (any Hi, Lo, Guard to another

Hi, Lo, Guard)
>1010Ω, <50pF differential (Hi to Lo or Hi, Lo to Guard).
>109Ω, <75pF path to chassis.

CHANNEL CROSSTALK: <–65dB @ 1MHz (50Ωload).
BANDWIDTH: <3dB loss at 30MHz (50Ω load).

THROUGHPUT

EXECUTION SPEED OF SCAN LIST ( channels or memory loca-

tions per second):

CHANNELS

MEMORIES

Break-Before-Make OFF 300 243

ON 270 189

TRIGGER EXECUTION TIME (maximum time from activa-

t

ion of Trigger Source to start of switch open or close2):

SOURCE LATENCY JITTER

GET

1

200 µs <15 µs

*TRG

2,3

3.0 ms
Trigger Link 200 µs <10 µs
External 200 µs <10 µs
Timer <25 µs

1

Excluding switch settling time.

2

Assuming no IEEE-488 commands are pending execution.

3

Display Off.

IEEE-488 COMMAND EXECUTION TIME

COMMAND EXECUTION TIME

1

CLOS (@1!1) <8ms + Relay Settle Time
OPEN (@1!1) <8ms + Relay Settle Time
MEM:REC M1 <9ms + 2×Relay Settle Time

(BBM ON)

< 9ms + Relay Settle Time

(BBM OFF)

1

Measured from the time at which the command terminator is
taken from the bus to relay energize. With display OFF.

IEEE-488 BUS

STANDARDS CONFORMANCE: Conforms to

SCPI-1990, IEEE-488.2 and IEEE-488.1.

MULTILINE COMMANDS: DCL, LLO, SDC,

GET, GTL, UNT, UNL, SPE, SPD.

UNILINE COMMANDS: IFC, REN, EOI, SRQ,

ATN .

INTERFACE FUNCTIONS: SH1, AH1,T5, TE0,

L4, LE0, SR1, RL1, PP0, DC1,DT1, C0, E1.

GENERAL

DISPLAY: Dual-line vacuum fluorescent. 1st line: 20-

character alphanumeric. 2nd line: 32-character
alphanumeric. Channel status LED grid.

LIGHT PEN OPTION: Provides interactive programming

of channels, cross points, scan lists, and memory.

REAR PANEL CONNECTORS:

IEEE-488; 9-pin DB9 Female; 8-pin micro DIN for
Trigger Link; 8-pin micro DIN for Trigger Link expan­sion; BNC for External Trigger; BNC for Channel Ready

POWER: 100V to 240V rms, 50/60Hz, 110VA maximum.
EMC: Complies with European Union Directive 89/336/

EEC, EN61326-1.

SAFETY: Conforms to European Union Directive 73/23/

EEC, EN61010-1.

EMI/RFI: Meets VDE 0871B and FCC Class B.
ENVIRONMENT: Operating: 0°C to 50°C, <80% RH (0°C

to 35°C). Storage: –25°C to +65°C.

DIMENSIONS, WEIGHT: 178mm high × 438mm wide ×

448mm deep (7 in × 17¼ in × 17⅝ in). Net weight 9.1kg
(20 lb).

7002 High Density Switch System Specifications

Specifications subject to change without notice.

Table of Contents

1 General Information

1.1 Introduction ..................................................................................................................................................... 1-1

1.2 Features ........................................................................................................................................................... 1-1

1.3 Warranty information ...................................................................................................................................... 1-1

1.4 Manual addenda .............................................................................................................................................. 1-2

1.5 Safety symbols and terms ................................................................................................................................ 1-2

1.6 Specifications .................................................................................................................................................. 1-2

1.7 Inspection ........................................................................................................................................................ 1-2

1.8 Optional accessories ........................................................................................................................................ 1-2

2 Card Installation

2.1 Introduction ..................................................................................................................................................... 2-1

2.2 Model 701X series card installation ................................................................................................................ 2-1

2.3 Non-701X series cards .................................................................................................................................... 2-2

3 Getting Started

3.1 Introduction ..................................................................................................................................................... 3-1

3.2 Front and rear panel configurations ................................................................................................................ 3-1

3.2.1 Front panel ............................................................................................................................................. 3-1

3.2.2 Rear panel .............................................................................................................................................. 3-1

3.3 Light pen option .............................................................................................................................................. 3-3

3.4 Display modes ................................................................................................................................................. 3-3

3.4.1 Changing the display mode (keypad method) ....................................................................................... 3-5

3.4.2 Changing the display mode (light pen method) ..................................................................................... 3-5

3.5 Channel assignments ....................................................................................................................................... 3-5

3.6 Overview of scan process ................................................................................................................................ 3-7

3.7 Operation demo ............................................................................................................................................... 3-8

3.7.1 Initial configuration ............................................................................................................................... 3-8

3.7.2 Close and open channels ........................................................................................................................ 3-9

3.7.3 Scan channels ...................................................................................................................................... 3-10

3.8 Switching card considerations ....................................................................................................................... 3-13

3.8.1 Switching card simulators ................................................................................................................... 3-13

i

3.8.2 Installing switching cards .................................................................................................................... 3-13

3.8.3 Card type ............................................................................................................................................. 3-13

3.9 Front panel operation summary .................................................................................................................... 3-14

3.9.1 Create channel list and/or scan list ...................................................................................................... 3-14

3.9.2 Close and Open channels .................................................................................................................... 3-15

3.9.3 Scan channels ...................................................................................................................................... 3-15

3.10 Introduction to IEEE-488.2 and SCPI .......................................................................................................... 3-16

3.10.1 Bus connections ................................................................................................................................... 3-17

3.10.2 Primary address ................................................................................................................................... 3-17

3.10.3 Abbreviated common command summary .......................................................................................... 3-17

3.10.4 Abbreviated SCPI command summary ............................................................................................... 3-18

3.10.5 Abbreviated syntax rules ..................................................................................................................... 3-19

3.10.6 Programming examples ....................................................................................................................... 3-20

4 Front Panel Operation

4.1 Introduction ..................................................................................................................................................... 4-1

4.2 Power-up procedure ........................................................................................................................................ 4-1

4.2.1 Line power connections ........................................................................................................................ 4-2

4.2.2 Power switch ......................................................................................................................................... 4-2

4.2.3 Power-up sequence ................................................................................................................................ 4-2

4.3 Front panel displays ........................................................................................................................................ 4-2

4.3.1 Vacuum fluorescent display (VFD) ...................................................................................................... 4-2

4.3.2 LED display ........................................................................................................................................... 4-4

4.4 Analog backplane ........................................................................................................................................... 4-5

4.5 Light pen option .............................................................................................................................................. 4-7

4.5.1 Light pen connection ............................................................................................................................. 4-7

4.5.2 Light pen operations .............................................................................................................................. 4-7

4.5.3 Light pen messages ............................................................................................................................... 4-8

4.6 Display modes ................................................................................................................................................. 4-8

4.6.1 Relay status display mode ..................................................................................................................... 4-8

4.6.2 List display modes ................................................................................................................................. 4-9

4.6.3 Changing the display mode ................................................................................................................. 4-10

4.6.4 LED graticule control .......................................................................................................................... 4-11

4.7 Channel assignments ..................................................................................................................................... 4-12

4.7.1 Non-matrix type cards ......................................................................................................................... 4-12

4.7.2 Matrix cards ......................................................................................................................................... 4-12

4.8 Channel list and scan list .............................................................................................................................. 4-15

4.8.1 Keypad entry method .......................................................................................................................... 4-16

4.8.2 Light pen entry method ....................................................................................................................... 4-18

4.9 Closing and opening channels ...................................................................................................................... 4-19

4.10 Scanning channels ......................................................................................................................................... 4-20

4.10.1 Scan process (Trigger Model) ............................................................................................................. 4-20

4.10.2 Scan procedure .................................................................................................................................... 4-23

ii

4.10.3 Scanning examples .............................................................................................................................. 4-26

4.11 Channel patterns (STORE and RECALL) .................................................................................................... 4-27

4.11.1 Storing channel patterns (STORE) ...................................................................................................... 4-28

4.11.2 Recalling channel patterns (RECALL) ................................................................................................ 4-29

4.12 MENU ........................................................................................................................................................... 4-29

4.12.1 SAVESETUP ....................................................................................................................................... 4-31

4.12.2 GPIB .................................................................................................................................................... 4-33

4.12.3 DIGITAL-I/O ...................................................................................................................................... 4-33

4.12.4 TEST .................................................................................................................................................... 4-34

4.12.5 LANGUAGE ....................................................................................................................................... 4-34

4.12.6 GENERAL ........................................................................................................................................... 4-35

4.13 Card configuration ........................................................................................................................................ 4-37

4.13.1 TYPE ................................................................................................................................................... 4-37

4.13.2 #-OF-POLES ....................................................................................................................................... 4-39

4.13.3 CARD PAIR ........................................................................................................................................ 4-39

4.13.4 DELAY ................................................................................................................................................ 4-40

4.13.5 READ-I/O-CARD ............................................................................................................................... 4-40

4.14 Scan configuration ........................................................................................................................................ 4-41

4.14.1 CHAN-CONTROL .............................................................................................................................. 4-43

4.14.2 SCAN CONTROL ............................................................................................................................... 4-46

4.14.3 ARM CONTROL ................................................................................................................................ 4-48

4.14.4 Channel restrictions ............................................................................................................................. 4-51

4.15 Digital I/O port .............................................................................................................................................. 4-53

4.15.1 Controlling digital circuitry ................................................................................................................. 4-54

4.15.2 Digital input channel ........................................................................................................................... 4-56

4.16 External triggering ........................................................................................................................................ 4-56

4.16.1 External trigger .................................................................................................................................... 4-57

4.16.2 Channel ready ...................................................................................................................................... 4-57

4.16.3 External triggering example ................................................................................................................ 4-58

4.17 Trigger Link .................................................................................................................................................. 4-59

4.17.1 Asynchronous operation ...................................................................................................................... 4-60

4.17.2 Semi-synchronous operation ............................................................................................................... 4-68

5 IEEE-488 Reference

5.1 Introduction ..................................................................................................................................................... 5-1

5.2 IEEE-488 bus connections .............................................................................................................................. 5-2

5.3 Primary address selection ................................................................................................................................ 5-4

5.4 Controller programming .................................................................................................................................. 5-4

5.5 Front panel aspects of IEEE-488 operation .................................................................................................... 5-5

5.5.1 Error and status messages ...................................................................................................................... 5-5

5.5.2 IEEE-488 status indicators .................................................................................................................... 5-5

5.5.3 LOCAL key ........................................................................................................................................... 5-6

iii

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5.6 Status structure ................................................................................................................................................ 5-6

5.6.1 Standard event status ............................................................................................................................. 5-8

5.6.2 Operation event status ........................................................................................................................... 5-9

5.6.3 Arm event status .................................................................................................................................. 5-12

5.6.4 Sequence event status .......................................................................................................................... 5-14

5.6.5 Trigger event status ............................................................................................................................. 5-16

5.6.6 Questionable event status .................................................................................................................... 5-19

5.6.7 Queues ................................................................................................................................................. 5-21

5.6.8 Status byte and service request (SRQ) ................................................................................................ 5-21

5.7 Trigger Model (IEEE-488 operation) ........................................................................................................... 5-24

5.8 General bus commands ................................................................................................................................. 5-29

5.8.1 REN (remote enable) ........................................................................................................................... 5-29

5.8.2 IFC (interface clear) ............................................................................................................................ 5-30

5.8.3 LLO (local lockout) ............................................................................................................................. 5-30

5.8.4 GTL (go to local) and local ................................................................................................................. 5-30

5.8.5 DCL (device clear) .............................................................................................................................. 5-30

5.8.6 SDC (selective device clear) ............................................................................................................... 5-31

5.8.7 GET (group execute trigger) ............................................................................................................... 5-31

5.8.8 SPE, SPD (serial polling) .................................................................................................................... 5-31

5.9 Programming syntax ..................................................................................................................................... 5-33

5.10 Common commands ..................................................................................................................................... 5-41

5.10.1 *CLS

5.10.2 *ESE

5.10.3 *ESE?

5.10.4 *ESR?

5.10.5 *IDN?

5.10.6 *OPC

5.10.7 *OPC?

5.10.8 *OPT?

5.10.9 *RCL

5.10.10 *RST

5.10.11 *SAV

5.10.12 *SRE

5.10.13 *SRE?

5.10.14 *STB?

5.10.15 *TRG

5.10.16 *TST?

5.10.17 *WAI

5.11 :DISPlay subsystem ...................................................................................................................................... 5-71

5.12 :OUTPut subsystem ...................................................................................................................................... 5-77

5.13 [:ROUTe] subsystem .................................................................................................................................... 5-79

5.13.1 :CLOSe <list> .................................................................................................................................. 5-80

5.13.2 :OPEN <list>\|ALL .......................................................................................................................... 5-82

5.13.3 :SCAN <list> .................................................................................................................................... 5-83

clear status ............................................................................................................................ 5-43

event status enable ................................................................................................................ 5-44

event status enable query .................................................................................................... 5-46

event status register query .................................................................................................. 5-47

identification query ............................................................................................................. 5-49

operation complete .............................................................................................................. 5-50

operation complete query .................................................................................................. 5-52

option identification query ................................................................................................. 5-54

recall .................................................................................................................................... 5-55

reset ...................................................................................................................................... 5-56

save ...................................................................................................................................... 5-58

service request enable .......................................................................................................... 5-59

service request enable query .............................................................................................. 5-61

status byte query ................................................................................................................. 5-62

trigger .................................................................................................................................. 5-64

self-test query ..................................................................................................................... 5-65

wait-to-continue .................................................................................................................. 5-66

iv

5.13.4 :FCHannels <list> ............................................................................................................................. 5-85

5.13.5 :INTerlock:LIST Commands ............................................................................................................... 5-86

5.13.6 :BBMake <b> ................................................................................................................................... 5-88

5.13.7 :SCHannel <b> ................................................................................................................................. 5-88

5.13.8 :CPAirX <b> where; X=[1] to 5 ....................................................................................................... 5-89

5.13.9 :CTYPe <name> ............................................................................................................................... 5-91

5.13.10 :POLE <NRf> ...................................................................................................................................... 5-92

5.13.11 :STIMe <n> ...................................................................................................................................... 5-94

5.13.12 :SAVE[:RELays] M<num> .............................................................................................................. 5-96

5.13.13 :SAVE:LIST <list>, M <num> ......................................................................................................... 5-96

5.13.14 :RECall M<NRf> ............................................................................................................................. 5-98

5.14 Sense subsystems .......................................................................................................................................... 5-99

5.15 :SOURce subsystem .................................................................................................................................... 5-101

5.16 :STATus subsystem .................................................................................................................................... 5-103

5.16.1 [:EVENt]? .......................................................................................................................................... 5-104

5.16.2 :ENABle <NRf> ............................................................................................................................. 5-109

5.16.3 :PTRansition <NRf> ....................................................................................................................... 5-113

5.16.4 :NTRansition <NRf> ...................................................................................................................... 5-120

5.16.5 :CONDition? ...................................................................................................................................... 5-122

5.16.6 :PREset .............................................................................................................................................. 5-123

5.16.7 :QUEue commands ............................................................................................................................ 5-124

5.17 :SYSTem subsystem ................................................................................................................................... 5-127

5.17.1 :PREset .............................................................................................................................................. 5-127

5.17.2 :POSetup <name> ........................................................................................................................... 5-127

5.17.3 :VERsion? .......................................................................................................................................... 5-128

5.17.4 :ERRor? ............................................................................................................................................. 5-129

5.18 Trigger subsystem ....................................................................................................................................... 5-131

5.18.1 :INITiate commands........................................................................................................................... 5-133

5.18.2 :ABORt .............................................................................................................................................. 5-134

5.18.3 :IMMediate ........................................................................................................................................ 5-134

5.18.4 :COUNt <n> ................................................................................................................................... 5-135

5.18.5 :DELay <n> .................................................................................................................................... 5-137

5.18.6 :SOURce <name> ........................................................................................................................... 5-138

5.18.7 :TIMer <n> ..................................................................................................................................... 5-140

5.18.8 :SIGNal .............................................................................................................................................. 5-141

5.18.9 TCONfigure commands .................................................................................................................... 5-141

6 Theory of Operation

6.1 Introduction ..................................................................................................................................................... 6-1

6.2 Overall functional description ......................................................................................................................... 6-1

6.3 Control function .............................................................................................................................................. 6-3

6.3.1 Reset circuitry ........................................................................................................................................ 6-3

6.3.2 Address decoding .................................................................................................................................. 6-3

6.3.3 Memory ................................................................................................................................................. 6-3

v

6.4 Relay control circuitry .................................................................................................................................... 6-5

6.4.1 Backplane interface ............................................................................................................................... 6-5

6.4.2 Switch card interface ............................................................................................................................. 6-6

6.4.3 ID data circuits ...................................................................................................................................... 6-6

6.4.4 Relay control ......................................................................................................................................... 6-8

6.4.5 Power-on safeguard ............................................................................................................................... 6-8

6.5 VFD display board circuitry ........................................................................................................................... 6-8

6.6 LED display board circuitry ........................................................................................................................... 6-9

6.7 External control signals ................................................................................................................................ 6-10

6.8 IEEE-488 interface ....................................................................................................................................... 6-11

6.9 Power supplies .............................................................................................................................................. 6-11

7 Maintenance

7.1 Introduction ..................................................................................................................................................... 7-1

7.2 Service options ................................................................................................................................................ 7-1

7.3 Handling and cleaning of backplane boards ................................................................................................... 7-2

7.3.1 Handling backplane boards ................................................................................................................... 7-2

7.3.2 Solder repairs and cleaning ................................................................................................................... 7-2

7.4 Static-sensitive devices ................................................................................................................................... 7-2

7.5 Routine maintenance ....................................................................................................................................... 7-3

7.5.1 Line voltage selection ............................................................................................................................ 7-3

7.5.2 Replacing power supply fuses ............................................................................................................... 7-3

7.5.3 Replacing AC power line fuses ............................................................................................................. 7-3

7.5.4 Changing the battery ............................................................................................................................. 7-4

7.5.5 Removing backplane row jumpers ........................................................................................................ 7-4

7.5.6 Changing firmware ................................................................................................................................ 7-5

7.6 Instrument disassembly ................................................................................................................................... 7-6

7.6.1 Top cover removal ................................................................................................................................ 7-7

7.6.2 Bottom cover removal ........................................................................................................................... 7-7

7.6.3 Left side panel removal ......................................................................................................................... 7-7

7.6.4 Front panel assembly removal ............................................................................................................... 7-7

7.6.5 Power supplies removal ........................................................................................................................ 7-8

7.6.6 Digital board removal ............................................................................................................................ 7-8

7.6.7 Backplane boards removal .................................................................................................................... 7-8

7.6.8 Display boards removal ......................................................................................................................... 7-9

7.7 Diagnostics ...................................................................................................................................................... 7-9

7.7.1 Preparations for running the diagnostics ............................................................................................... 7-9

7.7.2 Initial power-up test .............................................................................................................................. 7-9

7.7.3 Non-volatile memory test ...................................................................................................................... 7-9

7.7.4 Built-in-tests ........................................................................................................................................ 7-10

7.7.5 Display test — keys ............................................................................................................................. 7-11

7.7.6 Display test — patterns ....................................................................................................................... 7-11

7.7.7 Display test — LED board ................................................................................................................. 7-12

vi

7.7.8 Display test — char set ........................................................................................................................ 7-13

7.8 Test descriptions and notes ........................................................................................................................... 7-13

7.8.1 Initial power-up test ............................................................................................................................. 7-13

7.8.2 Non-volatile memory tests ................................................................................................................... 7-13

7.8.3 Built-in-tests ........................................................................................................................................ 7-13

7.9 Troubleshooting ............................................................................................................................................ 7-16

7.9.1 Digital board ........................................................................................................................................ 7-16

7.9.2 Display boards ..................................................................................................................................... 7-16

7.9.3 Power supply ....................................................................................................................................... 7-17

7.9.4 Backplane boards ................................................................................................................................. 7-17

8 Replaceable Parts

8.1 Introduction ..................................................................................................................................................... 8-1

8.2 Parts lists ......................................................................................................................................................... 8-1

8.3 Ordering information ...................................................................................................................................... 8-1

8.4 Factory service ................................................................................................................................................ 8-1

8.5 Component layout and schematic diagrams .................................................................................................... 8-1

Appendices

A Interface Function Codes ............................................................................................................................... A-1

B Controller Programs ....................................................................................................................................... B-1

C ASCII Character Codes and IEEE-488 Multiline Interface Command Messages ......................................... C-1

D IEEE-488 Bus Overview ................................................................................................................................ D-1

E IEEE-488 Conformance Information ............................................................................................................. E-1

F SCPI Conformance Information .................................................................................................................... F-1

G IEEE-488.2 Common Commands .................................................................................................................. G-1

H SCPI Command Subsystems .......................................................................................................................... H-1

I QuickBasic and QuickC Programs ................................................................................................................. I-1

vii

List of Illustrations

2 Card Installation

Figure 2-1 Card installation ................................................................................................................................... 2-3

3 Getting Started

Figure 3-1 Model 7002 front panel ........................................................................................................................ 3-2

Figure 3-2 Model 7002 rear panel ......................................................................................................................... 3-3

Figure 3-3 Optional light pen ................................................................................................................................ 3-4

Figure 3-4 Relay status display mode .................................................................................................................... 3-4

Figure 3-5 List display modes ............................................................................................................................... 3-4

Figure 3-6 Status interpretation of channel LEDs ................................................................................................. 3-5

Figure 3-7 Channel assignment formats ................................................................................................................ 3-5

Figure 3-8 Channel assignment formats ................................................................................................................ 3-6

Figure 3-9 Simplified model of scan operation ..................................................................................................... 3-7

4 Front Panel Operation

Figure 4-1 Vacuum fluorescent display (VFD) ..................................................................................................... 4-3

Figure 4-2 LED display ......................................................................................................................................... 4-5

Figure 4-3 Analog backplane (simplified) ............................................................................................................. 4-6

Figure 4-4 Analog backplane (detail for each slot) ............................................................................................... 4-6

Figure 4-5 Matrix row connections to analog backplane ...................................................................................... 4-6

Figure 4-6 VFD relay status mode ........................................................................................................................ 4-9

Figure 4-7 Interpreting channel LEDs (relay status display mode) ....................................................................... 4-9

Figure 4-8 VFD list display modes ...................................................................................................................... 4-10

Figure 4-9 Interpreting channel LEDs (list display mode) .................................................................................. 4-10

Figure 4-10 Channel assignments (non-matrix type cards) ................................................................................... 4-13

Figure 4-11 Channel assignments (matrix cards) .................................................................................................. 4-14

Figure 4-12 Trigger model (front panel scan process) .......................................................................................... 4-21

Figure 4-13 Digital I/O port ................................................................................................................................... 4-53

Figure 4-14 Digital I/O port simplified schematic ................................................................................................ 4-55

Figure 4-15 Sample externally powered relay ....................................................................................................... 4-56

Figure 4-16 External triggering connectors (BNC) ............................................................................................... 4-57

Figure 4-17 External trigger pulse specifications................................................................................................... 4-57

Figure 4-18 Channel ready and asynchronous Trigger Link Output pulse specifications .................................... 4-57

Figure 4-19 DUT test system ................................................................................................................................. 4-58

Figure 4-20 External trigger connectors ................................................................................................................ 4-58

Figure 4-21 Trigger link connectors ...................................................................................................................... 4-59

ix

Figure 4-22 DUT test system ................................................................................................................................ 4-61

Figure 4-23 Trigger link connections (asynchronous example) ........................................................................... 4-61

Figure 4-24 Operation model for asynchronous Trigger Link example #1 .......................................................... 4-63

Figure 4-25 Connections using Trigger Link adapter ........................................................................................... 4-64

Figure 4-26 DUT test system (asynchronous example #2) ................................................................................... 4-65

Figure 4-27 Trigger Link connections (asynchronous example #2) ..................................................................... 4-65

Figure 4-28 Operation model for asynchronous Trigger Link example #2 .......................................................... 4-67

Figure 4-29 Semi-synchronous trigger link pulse specifications .......................................................................... 4-68

Figure 4-30 Typical semi-synchronous mode connections ................................................................................... 4-68

Figure 4-31 Trigger Link connections (semi-synchronous example) ................................................................... 4-69

Figure 4-32 Operation model for semi-synchronous Trigger Link example ........................................................ 4-70

5 IEEE-488 Reference

Figure 5-1 IEEE-488 connector ............................................................................................................................ 5-2

Figure 5-2 IEEE-488 connections ......................................................................................................................... 5-2

Figure 5-3 IEEE-488 connector location .............................................................................................................. 5-3

Figure 5-4 Contact configuration .......................................................................................................................... 5-3

Figure 5-5 Model 7002 status register structure ................................................................................................... 5-7

Figure 5-6 Standard event status ........................................................................................................................... 5-8

Figure 5-7 Operation event status ....................................................................................................................... 5-10

Figure 5-8 Arm event status ................................................................................................................................ 5-12

Figure 5-9 Sequence event status ........................................................................................................................ 5-15

Figure 5-10 Trigger event status ........................................................................................................................... 5-17

Figure 5-11 Questionable event status .................................................................................................................. 5-19

Figure 5-12 Status byte and service request (SRQ) .............................................................................................. 5-22

Figure 5-13 Trigger Model (IEEE-488 bus operation) ......................................................................................... 5-25

Figure 5-14 Standard Event Status Enable Register ............................................................................................. 5-45

Figure 5-15 Standard Event Status Register ......................................................................................................... 5-48

Figure 5-16 Service Request Enable Register ....................................................................................................... 5-60

Figure 5-17 Status Byte Register .......................................................................................................................... 5-63

Figure 5-18 Operation Event Register ................................................................................................................ 5-106

Figure 5-19 Trigger Event Register .................................................................................................................... 5-106

Figure 5-20 Arm Event Register ......................................................................................................................... 5-107

Figure 5-21 Sequence Event Register ................................................................................................................. 5-108

Figure 5-22 Questionable Event Register ........................................................................................................... 5-108

Figure 5-23 Operation Event Enable Register .................................................................................................... 5-111

Figure 5-24 Trigger Event Enable Register ........................................................................................................ 5-111

Figure 5-25 Arm Event Enable Register ............................................................................................................. 5-112

Figure 5-26 Sequence Event Enable Register ..................................................................................................... 5-112

Figure 5-27 Questionable Event Enable Register ............................................................................................... 5-113

Figure 5-28 Operation Transition Filter .............................................................................................................. 5-115

Figure 5-29 Trigger Transition Filter .................................................................................................................. 5-116

Figure 5-30 Arm Transition Filter ....................................................................................................................... 5-117

Figure 5-31 Sequence Transition Filter ............................................................................................................... 5-118

Figure 5-32 Questionable Transition Filter ......................................................................................................... 5-119

x

6 Theory of Operation

Figure 6-1 Model 7002 system block diagram ...................................................................................................... 6-2

Figure 6-2 Block diagram — digital circuitry and memory .................................................................................. 6-4

Figure 6-3 Backplane interface simplified schematic ........................................................................................... 6-6

Figure 6-4 Block diagram — backplane interface (one slot) ................................................................................ 6-7

Figure 6-5 Timing diagram, IDCLK and IDDATA .............................................................................................. 6-8

Figure 6-6 Start and stop sequences ...................................................................................................................... 6-8

Figure 6-7 Display board block diagram ............................................................................................................... 6-9

Figure 6-8 LED display board block diagram ..................................................................................................... 6-10

Figure 6-9 Trigger link ........................................................................................................................................ 6-11

Figure 6-10 Digital I/O .......................................................................................................................................... 6-11

7 Maintenance

Figure 7-1 Backplane extender board .................................................................................................................... 7-5

Figure 7-2 First pattern for display test ............................................................................................................... 7-12

D IEEE-488 Bus Overview

Figure D-1 IEEE-488 bus configuration ............................................................................................................... D-2

Figure D-2 IEEE-488 handshake sequence ........................................................................................................... D-3

Figure D-3 Command codes .................................................................................................................................. D-7

xi

List of Tables

3 Getting Started

Table 3-1 Abbreviated common command summary ........................................................................................ 3-17

Table 3-2 Abbreviated SCPI command summary ............................................................................................. 3-18

4 Front Panel Operation

Table 4-1 Error and status messages .................................................................................................................... 4-3

Table 4-2 Significance of channel LEDs ........................................................................................................... 4-12

Table 4-3 MENU structure ................................................................................................................................. 4-30

Table 4-4 Default conditions .............................................................................................................................. 4-32

Table 4-5 CARD CONFIG MENU structure ..................................................................................................... 4-37

Table 4-6 TYPE assignments ............................................................................................................................. 4-38

Table 4-7 CONFIGURE SCAN menu structure ................................................................................................ 4-42

5 Service Information

Table 5-1 IEEE contact designations ................................................................................................................... 5-3

Table 5-2 HP BASIC 4.0 IEEE-488 statements ................................................................................................... 5-5

Table 5-3 General bus commands and associated BASIC statements ............................................................... 5-29

Table 5-4 IEEE-488.2 common commands and queries .................................................................................... 5-42

Table 5-5 Default conditions .............................................................................................................................. 5-57

Table 5-6 DISPlay command summary ............................................................................................................. 5-71

Table 5-7 OUTPut command summary ............................................................................................................. 5-77

Table 5-8 ROUTe command summary .............................................................................................................. 5-79

Table 5-9 SENSe command summary ............................................................................................................... 5-99

Table 5-10 SOURce command summary .......................................................................................................... 5-101

Table 5-11 STATus command summary ........................................................................................................... 5-103

Table 5-12 SYSTem command summary .......................................................................................................... 5-127

Table 5-13 Trigger command summary ............................................................................................................. 5-131

7 Maintenance

Table 7-1 Disassembly for routine maintenance .................................................................................................. 7-6

Table 7-2 Power supply checks .......................................................................................................................... 7-17

8 Maintenance

Table 8-1 Backplane board, parts list
Table 8-2 Digital board, parts list
Table 8-3 VFD display board, parts list
Table 8-4 Backplane extender board, parts list
Table 8-5 LED display board, parts list
Table 8-6 Miscellaneous, parts list

A Interface Function Codes

Table A-1 Model 7002 interface function codes ................................................................................................. A-2

B Controller Programs

Table B-1 BASIC statements necessary to send bus commands ......................................................................... B-3

D IEEE-488 Bus Overview

Table D-1 IEEE-488 bus command summary ..................................................................................................... D-4

Table D-2 Hexadecimal and decimal command code ......................................................................................... D-8

Table D-3 Typical addressed command sequence ............................................................................................... D-8

Table D-4 Typical common command sequence ................................................................................................ D-9

Table D-5 IEEE command groups ....................................................................................................................... D-9

E IEEE-488 Conformance Information

Table E-1 IEEE-488 documentation requirements .............................................................................................. E-1

F SCPI Conformance Information

Table F-1 Syntax of SCPI confirmed commands implemented by Model 7002 ................................................. F-2

Table F-2 Syntax of non-SCPI commands implemented by Model 7002 ........................................................... F-5

H SCPI Command Subsystems

Table H-1 DISPlay command summary .............................................................................................................. H-2

Table H-2 OUTPut command summary .............................................................................................................. H-2

Table H-3 ROUTe command summary ............................................................................................................... H-3

Table H-4 SENSe command summary ................................................................................................................ H-4

Table H-5 SOURce command summary ............................................................................................................. H-4

Table H-6 STATus command summary .............................................................................................................. H-5

Table H-7 SYSTem command summary ............................................................................................................. H-6

Table H-8 Trigger command summary ............................................................................................................... H-6

xiv

1

General Information

1.1 Introduction

This section contains general information about the Model
7002 Switch System.

1.2 Features

1.3 Warranty Information

1.4 Manual Addenda

1.5 Safety Symbols and Terms

1.6 Specifications

1.7 Inspection

1.8 Optional Accessories

1.2 Features

Some important Model 7002 features include:

• High Density Switching  Up to 400 channels (or ma­trix crosspoints) per mainframe using 10 switching
cards.

• Analog Backplane  Can be used to internally connect
the rows or banks of a Model 701X series card installed
in one slot to the rows or banks Model 701X series
cards installed in the other slots.

• Close/Open or Scan  The Model 7002 can simply
close and/or open one or more channels, or scan
through a specified list of channels.

• Channel LED Display  The real-time LED display
monitors the state (closed or open) of all available
channels.

• Memory  Up to 500 channel patterns (pattern of open
and closed channels) and 10 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  New trigger concept to provide more
versatile and precise external triggering. This is in
addition to the standard in/out BNC external triggering
technique.

• An optional light pen provides point and click program­ming from the front panel.

• Switching Cards  In addition to the switching cards
designed specifically for the Models 7001 and 7002 (i.e.
Models 7011, 7012, 7013 and 7014), you can use the
switching cards that were originally designed for the
Keithley Models 705 and 706 scanners.

1.3 W arranty information

Warranty information is located on the inside front cover of
this instruction manual. Should your Model 7002 require
warranty service, contact the Keithley representative or au-

1-1

General Information

thorized 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.

1.4 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.

1.5 Safety symbols and terms

The following symbols and terms may be found on an instru­ment or used in this manual.

!

The symbol
should refer to the operating instructions located in the in­struction manual.

on an instrument indicates that the user

1.7 Inspection

The Model 7002 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 . Sav e the
original packing carton for possible future reshipment. The
following items are included with every Model 7002 order:

• Model 7002 Switch System

• Model 7002 Instruction Manual

• Accessories as ordered.

If an additional instruction manual is required, order the
manual package, Keithley part number 7002-901-00. The
manual package includes an instruction manual and any per­tinent addenda.

1.8 Optional accessories

The following accessories are available from Keithley for
use with the Model 7002.

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.

1.6 Specifications

Model 7002 specifications may be found at the front of this
manual.

Model 7002-RMK-1 Fixed Rack Mount Kit: Mounts a

Model 7002 to a standard 19-inch rack.

Model 7002-RMK-2 Slide Rack Mount Kit: Similar to the

Model 7002-RMK-1 except the unit can slide in and out of
the rack.

Model 7078-PEN: Provides point and click programming

from the front panel (includes holder).

Model 8502 Trigger Link Adapter: Allows you to connect

the Trigger Link of the Model 7002 to an instrument that
uses the standard BNC (In/Out) external triggering tech­nique.

Models 8501-1 and 8501-2 Trigger Link Cables: The Mod-

el 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

Model 7002 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 IEEE­488 connector at each end. The Model 7007-2 is identical to
the Model 7007-1, but is two meters in length.

1-2

2

Card Installation

WARNING

The procedures in this section are in­tended for use only by qualified service
personnel. Do not perform these proce­dures unless qualified to do so. Failure
to recognize and observe normal safety
precautions could result in personal in­jury or death.

2.1 Introduction

ATTENTION FIRST TIME USERS

If you are a first time user, it is recommended that you
perform the Operation Demo in Section 3, Getting
Started, before installing any switching cards into the
mainframe. This demo will acquaint you with basic front
panel operation.

2.2 Model 701X series card installation: Explains how

to install a Model 701X series card (such as the Model
7011, 7012, 7013, or 7014) in the Model 7002.

2.3 Non-701X series card installation: Explains how to

install cards designed for the Model 705/706 scanner
in the Model 7002.

2.2 Model 701X series card installation

WARNING

The Model 7002 is designed to be used with the Model 701X
series switch cards (i.e. Model 7011, 7012, 7013, and 7014),
and with cards that were originally designed to be used with
the Keithley Model 705/706 scanners.

Installation procedures in this section are organized as fol­lows:

Turn off power from all instrumentation
(including the Model 7002 mainframe)
and disconnect their line cords. Make
sure all power is removed and stored en­ergy in external circuitry is discharged.

2-1

Card Installation

NOTE

If using the screw terminal connector card,
make sure your external circuitry is wired
to the card (as explained in the instruction
manual for the card) before installing the
card assembly in the Model 7002 main­frame.

CAUTION

To prevent contamination to the switch
card that could degrade performance,
only handle the card assembly by the
edges and shields. If contamination
occurs, clean the card as explained in its
instruction manual.

Card installation

Perform the following steps to install the card assembly in
the Model 7002 mainframe:

Channel Pattern unavailable. The unavailable channel
causes the Scan List and/or the affected Channel Pattern
to clear (see paragraph 4.8 and 4.11 for details).

Card removal

T o remov e the card assembly, first loosen the screw (if appli­cable), unlock the card by pulling the ejector arms outward,
then pull the card assembly out of the mainframe. Remember
to handle the card assembly by the edges and shields to avoid
contamination that could degrade performance.

2.3 Non-701X series cards

WARNING

Turn off power from all instrumentation
(including the Model 7002 mainframe)
and disconnect their line cords. Make
sure all power is removed and stored en­ergy in external circuitry is discharged.

1. Mate the connector card to the relay card if they are sep­arate. Make sure to handle the cards by the edges and
shields to prevent contamination.

2. Facing the rear panel of the Model 7002, select the slot
(CARD 1 through CARD 10) that you wish to install the
card in.

3. Referring to Figure 2-1, feed the card assembly into the
desired slot such that the edges of the relay card ride in
the rails.

4. With the ejector arms in the outward (unlocked) posi­tion, push the card assembly into the mainframe until
the arms engage into the ejector cups. Then push both
arms inward to lock the card all the way into the main­frame.

5. For the multi-pin connector card, tighten the screw
shown in Figure 2-1.

Notes:

1. Once a Model 701X series card is installed in the main­frame, the Model 7002 automatically identifies it on
power-up. This ID allows the Model 7002 to configure
itself for proper operation.

2. When a Model 701X series card is installed, the slot as­signment (Card TYPE) is performed automatically on
power-up. A slot assignment change could mak e a chan­nel that is currently included in the Scan List and/or a

NOTE

If using a card that requires connections to
be made on the card, make sure your exter­nal circuitry is wired to the card (as ex­plained in the instruction manual for the
card) before installing the card in the
Model 7002 mainframe.

CAUTION

To prevent contamination to the switch
card that could degrade performance,
only handle the card by the edges. If
contamination occurs, clean the card as
explained in its instruction manual.

Card installation

Perform the following steps to install the card in the Model
7002 mainframe:

1. Facing the rear panel of the Model 7002, select the slot
that you wish to install the card in.

2. Using Figure 2-1 as a guideline, feed the card into the
desired slot such that the edges of the card ride in the
rails.

2-2

Card Installation

3. With the ejector arms in the outward (unlocked) posi­tion, push the card assembly into the mainframe until
the arms engage into the ejector cups. Then push both
arms inward to lock the card into the mainframe.

NOTE

The Model 7002 cannot automatically
identify non-701X cards. After the main­frame is powered-up, you must enter the

Ejector arms

(locked position)

WARNING:

INTERCONNECTION, INSTALLATION AND REMOVAL OF CARDS BY QUALIFIED SERVICE PERSONNEL ONLY.

CARD

1

model number using the TYPE menu item
in the CARD CONFIG MENU.

Card removal

T o remove the card, first unlock it by pulling the ejector arms
outward, then pull the card out of the mainframe. Remember
to handle the card by the edges to avoid contamination that
could degrade performance.

CARD

2

CARD

3

CARD

4

Figure 2-1

Card installation

7011-S QUAD 1X10 MULTIPLEXER

KEITHLEY

WARNING:

NO INTERNAL OPERATOR SERVICEABLE PARTS, SERVICE BY QUALIFIED PERSONNEL ONLY.

Screw for multi-pin
connector card

7013-C 20 CHANNEL RELAY SWITCH

KEITHLEY

2-3

3

Getting Started

3.1 Introduction

This section contains introductory information on using your
Model 7002 Switch System. For detailed front panel and
IEEE-488 bus operation, refer to Sections 4 and 5,
respectively.

The information in this section is arranged as follows:

3.2 Front and rear panel configuration: Summarizes the

controls, light pen receptacle, and the two displays on
the front panel of the instrument.

3.3 Light pen option: Summarizes the basic operations

that can be performed with the optional light pen.

3.4 Display modes: Covers the two basic display modes

and explains how to toggle from one display mode to
the other.

3.5 Channel assignments: Explains the channel assign-

ment formats for programming the Model 7002, and
explains how the channel LEDs correspond to the
channel assignments.

3.8 Switching card considerations: Provides some

thoughts about switching cards that should be consid­ered before operating a switching system.

3.9 Front panel operation summary: Summarizes the

general procedures to open/close channels and scan
channels.

3.10 Introduction to IEEE-488.2 and SCPI: Discusses

some fundamental information concerning operation
over the IEEE-488 bus.

3.2 Front and rear panel configurations

3.2.1 Front panel

The front panel of the Model 7002 is shown in Figure 3-1.
This figure includes important abbreviated information that
should be reviewed before operating the instrument. Notice
that some of the controls are dual-function, rocker-action
type keys. These include SCAN/CARD CONFIGURA­TION, DELETE/INSERT, EXIT/ENTER and / .

3.6 Overview of scan process: Provides a brief overview

of the scan process as it passes through the three layers
of the trigger model.

3.7 Operation demo: Demonstrates basic operation using

the built-in 40-channel multiplexer simulator. Recom­mended for first time users.

3.2.2 Rear panel

The rear panel of the Model 7002 is shown in Figure 3-2.
This figure also includes important abbreviated information
that should be reviewed before operating the instrument.

3-1

Getting Started

1

2

3

4

INFO

LOCAL

CLEAR LIST ENTEREXIT

MENU

SAVE SETUP

SAVE
RESTORE
PWR ON
RESET

SCAN

CHAN-CONTROL

CHAN-SPACING

POWER

NO. OF CHANNELS
CONTROL

CARD

TYPE READ-I/O-CARDDELAYCARD-PINNO. OF POLES

5
6
7

1 Vacuum Fluorescent Display (VFD)

Provides two lines of alpha-numeric
information and includes annunciators.

2 INFO

Displays on-line help information.
Press again (or EXIT) to cancel
message.

3 LOCAL

Cancels remote, restores front panel
control.

4 POWER

0 = off
1 = on

5 OPEN ALL

Opens all channels of all slots. Also,
aborts a scan.

6 SCAN LIST

Toggles between Scan List and
Channel List.

7 CLEAR LIST

Clears the displayed Channel List
or Scan List.

8 STEP

Takes 7002 out of idle state and can be
used to step through the Scan List.

9 STORE

Stores channel pattern or list at a
specified memory location.

10 RECALL

Restores 7002 to a channel pattern
stored at a specified memory
location.

8
9

10

STEP OPEN CLOSEOPEN ALL

MEMORY CONFIGURATION

STORE

RECALL

DIG I/O

GPIB

OUTPUT-STATUS

ADDRESS

OUTPUT-POLARITY

STATUS

INPUT-STATUS

SCAN-CONTROL

SCAN-SPACING
NO. OF SCANS
CONTROL

11
12
13

SLOT 1

1

321

654

7002 SWITCH SYSTEM

SCAN CARD

TEST

BUILT-IN
DISPLAY

ARM-CONTROL

ARM-SPACING
ARM-COUNT
TRIGGER-CONTROL

CONTROL DATA ENTRY STATUS

MENU

LANGUAGE

ENGLISH
DEUTSCHE
FRANÇAIS

DELETE INSERTSCAN LIST

GENERAL

SERIAL NO.
STATUS-MESSAGES
DISPLAY

CHAN-RESTRICTIONS

SINGLE -CHAN
RESTRICTED CHANNELS

14

15

987

—

0

M

17

2

ROW

3
4

COLUMN

1234 6785910

SLOT 2

1
2

ROW

3
4

SLOT 3

ROW

SLOT 4

ROW

SLOT 5

ROW

COLUMN

1234 6785910

1
2
3
4

COLUMN

1234 6785910

1
2
3
4

COLUMN

1234 6785910

1
2
3
4

SLOT 6

SLOT 7

SLOT 8

SLOT 9

SLOT 10

COLUMN

1234 6785910

16

12 SCAN CONFIGURATION

Enables CONFIGURE SCAN menu:

CHAN CONTROL
SCAN CONTROL
ARM CONTROL
CHAN RESTRICTIONS

CARD CONFIGURATION

Enables CARD CONFIG MENU:

TYPE
# OF POLES
CARD PAIR
DELAY
READ I/O CARD

13 MENU

Enables MAIN MENU:
SAVESETUP
GPIB
DIGITAL I/O
TEST
LANGUAGE
GENERAL

14 CLOSE

Closes specified (displayed)

channels in Channel List.

15 DELETE

Deletes selected entry from

Channel List or Scan List.

INSERT

Insert an entry at selected
location in Channel List or Scan
List.

16 EXIT

Use to back out of a menu

structure. Cancels INFO message.

ENTER

Execute pending operation.
Separate channels, and terminate
selected list.

17 Keypad

0-9 Numeric entry

- Channel range separator
(i.e. 1 ! 1-1 ! 10).
M Memory location designator
(i.e. M6).
Move cursor left.
Move cursor right. Separate
channels, and terminate selected
list.

18 Channel LEDs

Provides status (on/off or list
inclusion).
With light pen, use to open/close
or include in selected list.

19 Control LEDs (Light Pen)

OPEN ALL Same as OPEN ALL key.
OPEN Same as OPEN key.
CLOSE Same as CLOSE key.
STEP Same as STEP key.
SCAN LIST Same as SCAN LIST key.
Indicates selected list.
INSERT Same as INSERT key.
DELETE Same as DELETE key.
BACKSPACE Move cursor left
and delete entry.
< Same as < key.
> Same as > key.
HOME Move cursor to beginning
of selected list.
END Move cursor to end of
selected list.

- Same as - key
SHOW LIST Toggles between display
modes (relay status or list).
Indicates selected mode.
EXIT Same as EXIT key.
ENTER Same as ENTER key.

20 LIGHT PEN

Receptacle for plug of light pen.

COLUMN

1234 6785910

1
2

ROW

3
4

COLUMN

1234 6785910

1
2

ROW

3
4

COLUMN

1234 6785910

1
2

ROW

3
4

COLUMN

1234 6785910

1
2

ROW

3
4

COLUMN

1234 6785910

1
2

ROW

3
4

18

OPEN ALL
OPEN
CLOSE
STEP

SCAN LIST
INSERT
DELETE
BACKSPACE

HOME
END

“–”

SHOW LIST
EXIT
ENTER

19

▲▼

LIGHT PEN

PEN

20

11 OPEN

Opens the specified (displayed)
channels in Channel List.

Figure 3-1

Model 7002 front panel

3-2

INTERCONNECTION, INSTALLATION AND REMOVAL OF CARDS BY QUALIFIED SERVICE PERSONNEL ONLY.

WARNING:

CARD

1

CARD

2

CARD

3

NO INTERNAL OPERATOR SERVICEABLE PARTS, SERVICE BY QUALIFIED PERSONNEL ONLY.

WARNING:

CARD

Getting Started

4

CARD

5

CARD

6

CARD

7

CARD

8

CARD

9

CARD

10

TRIGGER

DIGITAL I/O

CHANNEL

READY

EXTERNAL

TRIGGER

MADE IN USA

I
N

LINK

O
U
T

A1
A2
A3
A4
A5

2
3

8

4
5

IEEE

-

488

LINE RATING

100-240

50, 60
400

110VA
MAX.

V

Hz

6

7

1 CARD 1-10

Ten slots for ten switch cards.

2 TRIGGER LINK

Two micro 8-pin Din connectors.
Use trigger link cables.

3 DIGITAL I/O

DB-9 connector. Port
consist of four TTL output lines
and one TTL input line.

4 IEEE-488 Connector

Use standard IEEE-488 cables.

Figure 3-2

Model 7002 rear panel

3.3 Light pen option

Point and click programming using the light pen provides an
easy and fast method to enter channels into the channel list
and scan list. You simply point the pen at the desired channel
LED and press the button on the barrel.

Figure 3-3A shows how the light pen plugs into the front
panel, and Figure 3-3B shows how the light pen is used.
When an LED is clicked, it blinks for a couple of seconds
and then assumes the appropriate state.

Control LEDs are also provided to perform other operations
using the light pen. Most of these LEDs simply perform the
same operations as their front panel key counterparts. Figure
3-1 summarizes the operations of all the control LEDs.

5 CHANNEL READY

Female BNC connector for TTL
output trigger pulse.

6 EXTERNAL TRIGGER

Female BNC connector for TTL
input trigger pulse.

7 Line Power Receptacle

WARNING: Connect to grounded
outlet using three-wire power
cord.

8 IEEE-488 Address Switches

Use to set address for special order
units that do not have front panel
controls.

3.4 Display modes

There are two basic display modes; the relay status display
mode and the list display mode. In the relay status display
mode (see Figure 3-4), the channel LEDs provide the open/
close status of the available channels. This is the display
mode you want to be in when closing/opening channels or
scanning so that you can observe the real-time state of each
switch in your system.

In a list display mode (see Figure 3-5), the channel LEDs in­dicate which channels are included in the list (channel list or
scan list). Figure 3-6 provides an example of channel status
for the two display modes. If you create a list while in this
display mode, be sure to toggle back to the relay status dis­play mode before closing/opening channels or scanning.

3-3

Getting Started

1

6785

910

910

910

910

SLOT 7

ROW

SLOT 8

ROW

SLOT 9

ROW

SLOT 10

ROW

STATUS

2
3
4

COLUMN

1234 678

5

1
2
3
4

COLUMN

1234 678

5

1
2
3
4

COLUMN

1234 678

5

1
2
3
4

Figure 3-3

Optional light pen

910

910

910

910

CLOSE
STEP

SCAN LIST
INSERT
DELETE
BACKSPACE

▲▼

HOME
END

“–”

SHOW LIST
EXIT
ENTER

LIGHT PEN

PEN

Button Release on
Connector Plug

SLOT 1

3

ROW

6

SLOT 2

9

ROW

M

SLOT 3

ROW

SLOT 4

ROW

SLOT 5

ROW

COLUMN

1234

1
2
3
4

COLUMN

1234 678

5

1
2
3
4

COLUMN

1234 678

5

1
2
3
4

COLUMN

1234

1
2
3
4

COLUMN

1234 678

5

1
2
3
4

6785

910

SLOT 6

ROW

910

SLOT 7

ROW

910

SLOT 8

ROW

6785

910

SLOT 9

ROW

910

SLOT 10

ROW

STATUS

COLUMN

1234 678

5

1
2
3
4

COLUMN

1234

1
2
3
4

COLUMN

1234 678

5

1
2
3
4

COLUMN

1234 678

5

1
2
3
4

COLUMN

1234 678

5

1
2
3
4

910

OPEN ALL
OPEN
CLOSE

910

910

910

910

STEP

SCAN LIST
INSERT
DELETE
BACKSPACE

HOME
END

“–”

SHOW LIST
EXIT
ENTER

6785

Press button to
click channel LED

COLUMN

1234 678

5

1
2
3
4

COLUMN

1234

1
2
3
4

COLUMN

1234 678

5

1
2
3
4

COLUMN

1234

1
2
3
4

6785

6785

A) Light Pen Connector B) Light Pen Operation

▲▼

LIGHT PEN

PEN

VFD:

EDIT ERR REM TALK LSTN SRQ REAR REL FILT MATH 4W AUTO ARM TRIG SMPL

A) Channel List Selected

VFD:

EDIT ERR REM TALK LSTN SRQ REAR REL FILT MATH 4W AUTO ARM TRIG SMPL

B) Scan List Selected

Figure 3-4

Relay status display mode

VFD:

EDIT ERR REM TALK LSTN SRQ REAR REL FILT MATH 4W AUTO ARM TRIG SMPL

A) Channel List Display Mode

VFD:

EDIT ERR REM TALK LSTN SRQ REAR REL FILT MATH 4W AUTO ARM TRIG SMPL

B) Scan List Display Mode

Figure 3-5

List display modes

3-4

Getting Started

COLUMN

SLOT 1

1234 6785910

1
2

ROW

3
4

= LED brightly lit

Channel List Display

Relay Status

= Channel closed
= Channel open

Scan List Display

= Channel included
in selected list

Figure 3-6

Status interpretation of channel LEDs

3.4.1 Changing the display mode
(keypad method)

1. Press the MENU key to display the MAIN MENU.

2. Using the cursor keys ( and ), place the cursor on
GENERAL and press ENTER.

3. Place the cursor on DISPLAY and press ENTER to dis­play the following MENU:

CONFIG LED DISPLAY

RELAY-STATUS CURRENT LIST

3.5 Channel assignments

Channel assignment format depends on the type of card in­stalled in the mainframe. A matrix card uses a three integer
format to specify slot, row, and column, while a non-matrix
type card uses a two integer format to specify slot and chan­nel. The channel assignment formats are illustrated in Figure
3-7.

S ! R ! C

Slot:
S = 1-10

Row:
R = 1-4

Example: 2 ! 3 ! 6 = Slot 2, Row 3, Column 6

A) Matrix Cards

S ! C

Slot:
S = 1-10

Example: 5 ! 24 = Slot 5, Channel 24

B) Non-Matrix Cards

Figure 3-7

Channel assignment formats

Column:
C = 1-10

Channel:
C = 1-40

RELAY STATUS selects the relay status display mode,
and CURRENT LIST selects the list display mode.

4. Place the cursor on the desired display mode and press
ENTER.

5. Use EXIT to back out of the menu structure.

3.4.2 Changing the display mode
(light pen method)

The SHOW LIST LED toggles between the relay status dis­play mode and the list display mode. To change the display
mode, simply click the SHOW LIST LED.

Channel LEDs

The 400 channel LEDs on the front panel are arranged in 10
arrays of 40 LEDs each. Each LED array corresponds to a
mainframe slot. The channel assignment for each LED of an
array is determined by the type of card and which slot it is
installed in. LEDs that are completely turned off indicate that
switching channels are not available at those locations.

3-5

Getting Started

For a matrix card, each channel LED in the array corre­sponds to a row/column crosspoint. The channel assign­ments for matrix cards are shown in Figure 3-8A. For
example, if a 40 × 10 matrix card is installed in slot 5, then
the channel assignments are designated 5!1!1 through
5!4!10.

1 2 3 4 5 6 7 8 9 10

1

2

3

4

S!1!1

S!2!1

S!3!1

S!4!1

where; S is the slot number (1-10)

S!1!2

S!2!2

S!3!2

S!4!2

S!1!3

S!2!3

S!3!3

S!4!3

S!1!4

S!2!4

S!3!4

S!4!4

A) Matrix Cards

1 2 3 4 5 6 7 8 9 10

For a non-matrix type card, each channel LED in the array
corresponds to one of up to 40 channels. The channel assign­ments for non-matrix type cards are shown in Figure 3-8B.
For example, if a 40-channel multiplexer card is installed in
slot 9, then the channel assignments are designated 9!1
through 9!40.

S!1!5

S!2!5

S!3!5

S!4!5

S!1!6

S!2!6

S!3!6

S!4!6

S!1!7

S!2!7

S!3!7

S!4!7

S!1!8

S!2!8

S!3!8

S!4!8

S!1!9

S!2!9

S!3!9

S!4!9

S!1!10

S!2!10

S!3!10

S!4!10

1

2

3

4

S!1

S!11

S!21

S!31

where; S is the slot number (1-10)

B) Non-Matrix Type Cards

Figure 3-8

Channel assignment formats

S!2

S!12

S!22

S!32

S!3

S!13

S!23

S!33

S!4

S!14

S!24

S!34

S!5

S!15

S!25

S!35

S!6

S!16

S!26

S!36

S!7

S!17

S!27

S!37

S!8

S!18

S!28

S!38

S!9

S!19

S!29

S!39

S!10

S!20

S!30

S!40

3-6