Keithley 7011-S User manual

Instruction Manual
Models 7011-Sand 701I-C
Quad 1 x 10 Multiplexer Cards
Contains Operating and Servicing Information

WARRANTY
Keithley Instruments, Inc. warrants this product to be free from defects in material and workmanship for a period of 1 year
from date of shipment.
Keithley Instruments, Inc. warrants the following items for 90 days from the date of shipment: probes, cables, rechargeable
batteries, diskettes, and documentation.
During the warranty period, we will, at our option, either repair or replace any product that proves to be defective.
To exercise this warranty, write or call your local Keithley representative, or contact Keithley headquarters in Cleveland, Ohio.
You will be given prompt assistance and return instructions. Send the product, transportation prepaid, to the indicated service
facility. Repairs will be made and the product returned, transportation prepaid. Repaired or replaced products are warranted for
the balance of the original warranty period, or at least 90 days.
LIMITATION OF WARRANTY
This warranty does not apply to defects resulting from product modification without Keithley’s express written consent, or
misuse of any product or part. This warranty also does not apply to fuses, software, non-rechargeable batteries, damage from
battery leakage, or problems arising from normal wear or failure to follow instructions.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY
IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. THE REMEDIES PRO-
VIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES.
NEITHER KEITHLEY INSTRUMENTS, INC. NOR ANY OF ITS EMPLOYEES SHALL BE LIABLE FORANY 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, BUTARE NOT LIM-
ITED TO: COSTS OF REMOVAL AND INSTALLATION, LOSSES SUSTAINED AS THE RESULT OF INJURY TO ANY
PERSON, OR DAMAGE TO PROPERTY.
Keithley Instruments, Inc. 28775 Aurora Road • Cleveland, Ohio 44139 • 440-248-0400 • Fax: [phone]
1-888-KEITHLEY (534-8453) • www.keithley.com
Sales Offices: BELGIUM: Bergensesteenweg 709 • B-1600 Sint-Pieters-Leeuw • 02-363 00 40 • Fax: [phone]
CHINA: Yuan Chen Xin Building, Room 705 • 12Yumin 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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KOREA: FL., URI Building • 2-14Yangjae-Dong • Seocho-Gu, Seoul 137-130 • 82-2-574-7778 • Fax: [phone]
NETHERLANDS: Postbus 559 • 4200AN 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]
TAIWAN: 1FL., 85 Po Ai Street • Hsinchu, Taiwan, R.O.C. • 886-3-572-9077• Fax: [phone]
© Copyright 2001 Keithley Instruments, Inc.
Printed in the U.S.A.
11/01

Models 7011 -S and 7011 -C Instruction Manual
01991, Keithley Instruments, Inc.
Test Instrumentation Group
All Rights Reserved
Cleveland, Ohio, U. S. A.

Manual Print History
The print histoxy shown below lists the printing dates of all Revisions and Addenda created for this manual. The
Revision Level letter increases alphabetically as the w@ 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 Revi-
sion includes arevised copy of this print history page.
R&ion A (Dcament Number 7011-90101)........_.............~
................................................
November 1991
Addendum A (Document Number 7011-901-02)
..........................................................................
January 992
Revision B (Donunmt Number 7011~901-01)................................................................................l&1-31 1992
Revision C (Dmment Number 7011-90141)..........................................................................December 1992

Safety Precautions
The following safety precautions should be observed before using
this product and any associaled instrumentation. Although some in-
~tnmen~s and accessories would nomxdly be used with non-haz-
ardous voltages, there are situations where hazardous conditions
may be p*esent.
This product is intended for use by qualified personnel who recog-
nize shock hazards and are familiar with the safety precautions re-
quired to avoid possible injury. Read the operating information
carefully before using the product.
The types of product users arc:
Responsible body is tbc individual or group responsible for the use
and maintenance of equipment, 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 instm-
ment. 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, for example, setting the line voltage or replac-
ing consumable materials. Maintenance procedures aredescribed in
the manual. The proccdurcs explicitly state if the operator may per-
form them. Otherwise, they should be performed only by service
perS”lld.
Service personnel 8.n~trained to work on live circuits, and perform
safe installations and repairs of products. Only properly trained ser-
vice personnel may perform installation and service procedures.
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. A good safety practice is to expect
that hazardous voltage is present in any unknown circuit before
measuring.
Users of this product must be protected from electric shock at all
times. The responsible body must ensure that users are prevcntcd
accessand/or insulated from every connection point. In some cases,
connections must be exposed to potendal human contact. Product
users in these circumstances must be trained to protect themselves
from the risk of electric shock. If the circuit is capable of operating
at or above 1000 voks, no conductive part of the circuit may be
exposed.
As described in the International Electrotechnical Commission
(IEC) Standard IEC 664, digital multimeter measuring circuits
(c,g,, Keithley Models 175A, 199, 2000, 2001, 2002, and 2010)
measuring circuits are Installation Category Il. All other instm-
merits’ signal terminals are Installation Category I and must not bc
connected to mains.
Do not connect switching cards directly to unlimited power circuits.
They are intended to be used with impedance limited sources.
NEVER connect switching cards directly to AC mains. When con-
necting sources to switching cards, install protective devices to lim-
it fault current and voltage to the card.
Before operating an instrument, make sure the lint cord is connect-
ed to a properly grounded power receptacle. Inspect the connecting
cables, teat leads, and jumpers for possible wear, cracks, or breaks
before each use.
For maximum safety, do not touch the product, test cables, or any
other instruments while power is applied to the circuit under test.
ALWAYS remove power from the entire test system and discharge
any capacitors before: connecting or disconnecting cables or jump-
ers, 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.

Do not exceed the maximum signal levels of the instruments and ac-
cessories, as defined in the specifications and operating informa-
tion, and as shown on the instrument or test fixturn panels, or
switching card.
Instrumentation and accessories shall not be connected to humans.
Before performing any maintenance, disconnect the line cord and
all test cables.
When fuses are used in a product. replacc with same type and rating
Carcontinued protection against fire hazard.
Chassis connections most only be used as shield connectioos for
measuring circuits, NOT as safety earth ground connections.
If you are using a test fixture, keep the lid closed while powcr is ap-
plied to the device under tat. Safe operation requires the USCof a
lid interlock.
To maintain protection from electric shock and fire, replacement
components in mains circuits, including the power transformer, test
leads. and inout iacks. must be ourchased from Keithlev lnsm-
mats. Standard fuses, with applicable national safety approvals,
may be used if the rating and type arc the same. Other components
that are not safety related may be purchased from other suppliers as
long asthey are equivalent to the original component. (Note that sc-
leaed parts should be purchased only through Kcithley Instruments
to maintain accuracy and functionality of the product.) If you arc
unsure about the applicability of a replacement component, call a
Ifa@. screw is present, connect it to safety earth ground using the
wire recommended in the user documentation.
symbol on an instrument indicates that the user should re-
fer to the operating instructions located in the manual.
Keithley Instruments oflicc for information.
To clean the instrument. USCa dame 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 instmmcnt.
TheA symbol oo an instrument shows that it can source or mea-
sure 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. Always 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.

7011SPECIFICATIONS
MOD”, ‘IOU-S Quad 1x10 Multiplew with SaewT.smh&.
MODEL7011-C QuadlxlOMvltiplexerwithMT~~Connector.
MDLTIPLBX CONPIGDRATION Four independent 1x10 2-p& Multi-
plex banks or two independent 1x10&pole Multiplex banks. Adjjcent
banksenbecomfftedtogether. Jumperscanberemovedtoisolateany
bank from the backplane.
CONTACT CONFIGDRATION: 2-jmle Form A @Ii,Lo).
CONNECTOR TYPE:
7011-5: Screw terminal, #16AWG IMximllm wire size, with a92 tnch
O.D. 28Conductors
with .062inch O.D. maxima
#Z?AWG typical wire size
30Conductor madmum
mmc %-pin m&Ewxardconnebor. Mates tofem&twistedwire
cable, crimp or solder connedor.
MAXMUM SIGNAL LEVEb
DC Sign& 1lOV DC behveen any two pins, IA witched. 3WA
bG.eive load).
AC Sign& 125VFM5 or 173V AC peak, between any two pins,
1A switched, 60VA ke&tive load).
COMMON MODE VOLTAGE: 175” peak, my pin to chassis.
CONTACTLIFE
CONTACT POTENTIAL
7011-5: c 500nv per contact pair Hi, Lo).
< 1.5pv par single contact
m11-c < 1.5WVper contact pair m, Lo) eypically < 1@q.
< 35 p? per single contact oj@zdly c 3 PVL
OPFSET ‘XItRt3iVI: < 100PA.
ACTUATION TIME: 3ms.
ISOLATION:
Bank >lC@Q< 25pF.
CbanneI to channel: >lO%Z,< 50 pF.
Differenti Configured as 1x10 =-l@Q, < 100pF.
Configured as 1x40 >loSQ, < 200pF.
Common Mode Configured as 1x10 >lOQ, < 2W pF.
Conftgurect as 1x40 >l@O, < 600pF.
CROSS TALK OMHz, 500 Load):
Bank <-4OdB.
Channeb <4OdB.
INSERTION LOSS (MS2Somx,sO Load): < 0.1dB below 1MHz, < 3dB
below 2 MHZ.
RELAYDRNECURRENT (per r&y): 16mA.
E7WIRONMEN-C
opdi0~ O’C to WC, up to 35-x < 80%Fx.
smagez -25°C to 65’C
spedfieti0ns subjj to change without notice.

Table of Contents
1.1 Introduction ..................................................................................................................................................... 1-l
1.2 Features.............................................................................................................................................................
l-1
1.3 warranty informaton.. ...................................................................................................................................
l-2
1.4 Manual a&km& .............................................................................................................................................
l-2
1.5 Safety symbols and terms ..............................................................................................................................
1-2
1.6 specifications ...................................................................................................................................................
1-2
1.7 Unpacking am.3inspection
1.7.1
........................................................................................................................................................................................................................................................
l-2
Inspectior, for damage l-2
1.7.2 Shipping axItents.. ..................................................................................................................................
l-2
1.7.3 apron mand.. ................................................................................................................................
1-3
1.7.4 Repacking for shipment .........................................................................................................................
1-3
1.8 Optional a~c~soties.. ......................................................................................................................................
l-3
2.1
2.2
22.1
2.2.2
2.3
2.3.1
2.3.2
2.3.3
2.3.4
2.4
2.4.1
2.4.2
Introduct$m ....................................................................................................................................................
2-1
Basic m&ipkxer ca~figurations ..................................................................................................................
2-1
Multiplexer bank-to-bank jumpers.. .....................................................................................................
2-2
Backplane jumpers ..................................................................................................................................
2-5
Typical nultiplexer switching schemes.......................................................................................................
2-6
S&++&xl swit&ing
..........................................................................................................................
2-7
Differential switching .............................................................................................................................
2-7
sensing. .....................................................................................................................................................
2-a
SMIJ co~cxtiq~. ....................................................................................................................................
2-8
Multiplexer expansmn ..................................................................................................................................
2-10
Two-card svitching system
....................................................................................................................................................................................................................
Mainframe multiplexer expansion t:?y
3.1
3.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.4
3.4.1
3.4.2
3.4.3
3.5
~~od,,,&m, ..................................................................................................................................................... 3-l
&n,&,g prxa~tion,s
.....................................................................................................................................
3-l
C~~&i~~. .....................................................................................................................................................
3-l
&&-t&m& jumpers
Backplane *pa ..................
..........................................................................................................................................................................................................................................................................................................................................................
3-2
3-3
Screw te&d KXEE&X card 3-4
Multi-pin (masste
rmination) connector card .....................................................................................
3-6
Tyqicd com&icm s&emes ........................................................................................................................
3-11
Single card system.................................................................................................................................
3-11
Two-c& system.. .................................................................................................................................
3-14
Tw~mainfrme system ........................................................................................................................ 3-14
Model 7011i,,&&hc,n and remow., .........................................................................................................3-19

4.1 Introduction.. ....................................................................................................................................................
4-1
4.2 Power limits.. .................................................................................................................................................... 4-1
4.3 Mainframe control of multiplexer card.. ......................................................................................................
4-l
4.3.1
Channel assignments ..............................................................................................................................
42
4.3.2
Front panel control. .................................................................................................................................
4-4
4.3.3
IEEE-488 bus operation.. .........................................................................................................................
44
4.4
Multiplexer switching examples ...................................................................................................................
4-5
4.4.1 Resistor testing .........................................................................................................................................
45
4.4.2 Transistor testing .....................................................................................................................................
49
4.4.3 Testing with matrix cards.....................................................................................................................
4-11
4.5 Measurement considerations .......................................................................................................................
4-15
4.5.1 Path isolation.. ........................................................................................................................................
415
4.52
Magnetic fields .......................................................................................................................................
4-16
4.5.3 Radio frequency interference.. .............................................................................................................
4-16
4.5.4 Ground loops .........................................................................................................................................
4-17
4.5.5 Keeping connectors clean .....................................................................................................................
4-17
4.5.6 AC frequency response.........................................................................................................................
4-17
5.1
5.2
5.3
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
5.3.6
5.3.7
5.3.8
5.4
5.5
5.5.1
5.5.2
5.5.3
5.5.4
5.5.5
5.6
5.6.1
5.6.2
5.6.3
Introduction ......................................................................................................................................................
5-l
Handling and cleaning precautions.. ............................................................................................................
5-l
Performance verification ............................................................................................................................... 5-2
Environmental conditions ......................................................................................................................
5-2
Recommended equipment .....................................................................................................................
5-2
Multiplexer card connections ................................................................................................................
5-3
Channel resistance tests..........................................................................................................................
5-3
Offset current tests
...................................................................................................................................
5-5
Contact potential tests
.............................................................................................................................
5-7
Bank and channel-to-channel isolation tests .......................................................................................
5-8
Differential and common-mode isolation tests.................................................................................
5-12
Special handling of static-sensitive devices....................................................................
.:.........................
5-14
Principles of operation ..................................................................................................................................
5-15
Block diagram ........................................................................................................................................
5-15
ID data circuits.. .....................................................................................................................................
5-15
Relay control ...........................................................................................................................................
5-17
Relay power control ..............................................................................................................................
5-17
Power-on safeguard ..............................................................................................................................
5-17
Troubleshooting .............................................................................................................................................
5-17
Troubleshooting equipment .................................................................................................................
5-17
Troubleshooting access
.........................................................................................................................
5-18
Troubleshooting Procedure ..................................................................................................................
5-18
6.1 Introduction ......................................................................................................................................................
6-l
6.2
Parts lists ...........................................................................................................................................................
6-l
6.3
Ordering information..
....................................................................................................................................
6-1
6.4
Factory service..................................................................................................................................................
6-l
6.5
Component layouts and schematic diagrams.. ...........................................................................................
6-2

List of Illustrations
Figure 2-l Model 7011simplified schematic..........................................................................................................2-2
Figure 2-2 Four 1 x 10multiplexer configuration (jumpers not installed) ........................................................2-3
Figure 2-3 Two 1 x 20multiplexer configuration (jumpers installed). ...............................................................
2-3
Figure 24 One 1x 40 multiplexer configuration (jumpers installed) ................................................................2-4
Figure 2-5 Model 7001analog backplane ...............................................................................................................2-5
Figure 2-6 Bank connections to backplane .............................................................................................................2-6
Figure 2-8 Differential switching example .............................................................................................................
2-7
Figure 2-7 Single-ended switching example ..........................................................................................................2-7
Figure 2-9 Sensing example.. ....................................................................................................................................2-8
Figure 2-10 SMLJconnectiom .....................................................................................................................................2-9
Figure 2-11 Two separate multiplexer systems .....................................................................................................2-10
Figure 2-12 Multiplexer input expansion example ...............................................................................................2-11
Figure 2-13 Mixed card type example .....................................................................................................................2-12
Figure 31 Bank-to-bank jumper locations ...
..........................................................................................................
32
Figure 32 Bank-to-bank jumper terminal identification .....................................................................................
33
Figure 33 Bank-to-bank jumper installation .........................................................................................................33
Figure 34 Backplane jumpers.. ................................................................................................................................
34
Figure 35 Model 7011screw terminal connector card.........................................................................................
3-4
Figure 36 Typical screw terminal connections .....................................................................................................
3-5
Figure 37 Cable clamp for screw terminal connector card .................................................................................
35
Figure 38 MI&-pin card terminal identification .................................................................................................
37
Figure 39 Typical round cable connection techniques ........................................................................................
39
Figure 310 Model 7011~MTRconnector pinout.. ..................................................................................................
310
Figure 311 Model 7011~KIT-R(with/cable) assembly ........................................................................................
310
Figure 312 Single card system example (multi-pin connector card). ................................................................312
Figure 313 Single card Systemexample (screw terminal connector card)........................................................3-13
Figure 314 Tw-d system example (nxxki-pin connector card)....................................................................
3-15
Figure 315 ‘&v-d system example (screw terminal connector card) ..........................................................316
Figure 316 Two-mainframe system example (multi-pin connector card). .......................................................317
Figure 317 Two-mainframe system example (screw terminal connector card)...............................................318
Figure 318 Model 7011-Ccard jn&lk&m in Model 7001 .................................................................................
3-20
Figure 319 7011-Scard inst&dion in Model 7001...............................................................................................
321
Figure 4-I Channel status display ...........................................................................................................................
4-2
Figure 4-2 Display o*ganization for multiplexer channels ..................................................................................
4-3
Figure 4-3 Model 7011progr amming channel assignments.. ..............................................................................
4-3
Figure 4-4 2-tie resistance testing.. .......................................................................................................................
4-6
iii

Figure 45 Four-wire resistance testing.. .................................................................................................................4-7
Figure 4-6 Low *&stance testing.. ...........................................................................................................................
48
Figure 4-7 Configuration for current gain and common-emitter test...............................................................4-10
Figure 48 Typical common-emitte~ characteristics ............................................................................................
411
Figure 49 Conmcting multiplexer and ma&ix cards together .........................................................................4-12
Figure 4-10 Resktitity test configuration ...............................................................................................................
4-13
Figure 4-11 Measurement required for resistivity test..........................................................................................
4-14
Figure 412 Path isolation resistance........................................................................................................................
4-15
Figure 413 Voltage attenuation by path isolation resistance.. ............................................................................4-16
Figure 414 Power line ground loops ......................................................................................................................
4-17
Figure 415 Eliminating ground loops ....................................................................................................................
4-17
Figure 5-l Pati *esistance test connections ............................................................................................................
5-4
Figure 5-2 Differadial offset current test connections ..........................................................................................
5-6
Figure 5-3 Contact potential test comwciions ........................................................................................................
5-7
Figure 5-4 Bank i&&ion test connections.. ............................................................................................................
5-8
Figure 5-5 Channel-to-channel isolMio* test connections ..................................................................................
S-10
Figure 56 Differential isolation test connections ................................................................................................
5-12
Figure 5-7 Co-on-mode i.solation test connections.. .......................................................................................
5-14
Figure 5-8 Model 7011block diagram ...................................................................................................................5-15
Figure 5-9 SM and stop sequences.......................................................................................................................
5-16
Figure S-10 T-tit and acknowkdge sequence.................................................................................................
5-16
iv

List of Tables
Table 3-1 Bank-to-bank jumpers (refer to Figure 3-Z).........................................................................................
3-3
Table 3-2 Mass termination ~ccessori~ ................................................................................................................
3-6
Table 4-l Pa&d Cha.r,r,elsin 4-p& Operation ........_.._...t...................................................................................
4-6
Table 5-1 verification equipment.. .........................................................................................................................
5-2
Table 5-2 Bank is&.tic,n test s-q .................................................................................................................
5-9
Table 5-3 Channel-to-channel isolation test mmmary .....................................................................................
5-11
Table 5-4 Differential and ~~-~~-nd.e &&ion &ding. ............................................................................
5-13
Table 5-5 &co-end& ~~~bk&xdzing equipment.. ....................................................................................
5-17
Table 5-6 Troubleshooting procedux .................................................................................................................
5-19
v/vi

General Information
1.1 Introduction
This section contains general information about the
Model 7011Quad 1x 10Multiplexer card.
There are two basic versions of this multiplexer card;
the Model 7011-Sand the Model 7011-C. The Model
7011-Sassembly consists of a screw terminal connector
card and a relay card. External test circuits are wired
directly to the saew terminals of the connector card.
Also available from Keithley is the Model 7011-ST.This
is an extra screw terminal connector card. With an extra
connector card, you can wire a second test system
without disturbing the wiring con@uration of the first
test system.
The Model 7011-C assembly consists of a multi-pin
bmss te
rmination) connector card and the relay card.
Fxtemal test circuit connedions to the multiplexer are
made via the 96-pin male DIN connector on the con-
nector card. Keithley offers avariety of optional acces-
sories that can be used to make conneciiom to the
connector card (seeparagraph 1.9).
The rest of Setion 1is arranged in the following man-
ner:
1.2 Features
1.3 warranty information
1.4 Manual addenda
1.5 Safety symbols and terms
1.6 Specifications
1.7 Unpacking and inspection
1.8 Repacking for shipment
1.9 Optional accessories
1.2 Features
The Model 7011is alow voltage, two-pole, quad, 1x 10
multiplexer card. Someof the key features in&de:
l
Low contact potential and offset current for mini-
mal effects on low-level signals.
l
The connector board detaches from the relay board
allowing easy accessto the saew terminals (Model
7011-S)and jumpers.
l Easy jumper cotiguration of one, two, three or
four multiplexer banks.
l Backplane jumpers. Cutting jumpers disconnects
multiplexer bank outputs from the Model 7001an-
alog backplane.
1-l

1.3 Warranty information
Warranty information is Located on the inside front
cover of this instruction manual. Should you Model
7011 require warranty service, contact the Keithley rep-
resentative or authorized repair fxility in your areafor
further information. When returning the multiplexer
card for repair, besure 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 multi-
plexer card or manual will be explained in an adden-
dum inchxded with the card. Addenda are provided in
apage replacement format. Simply replace the obsolete
pages with the new pages.
1 .S Safety symbols and terms
The following symbols and terms may be found on an
ins!mmwnt or used in this manual.
The A symbol on an instrument indicates that the
user should refer to the operating instmztions located
in the insfnxtion manual.
The $ symbol on an instrument shows :, nigh
voltage may be present on the terminal(s). L* stan-
dard 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.
1.6 Specifications
Model 7011specifications are found at the front of this
manual. These specifications are exclusive of the mul-
tiplexer mainframe speci6cation.3.
1.7 Unpacking and inspection
1.7.1 Inspection for damage
The Model 7011is packaged in az-sealable, anti-static
bag to protect it from damage due to static discharge
and from contamination that could degrade its perfor-
mance. Beforeremoving the card from the bag, observe
the following precautions on handling.
Handling Precautions:
1. Always grasp the card by the side edgesand shields.
Do not touch the board surfaces or components.
2. When not installed in a Model 7001 mainframe,
keep the card in the anti-static bag and store it in the
original packing carton.
After removing the card from its anti-static bag, inspect
it for any obvious signs of physical damage. Report
any such damage to the shipping agent immediately.
1.7.2 Shipping contents
The following items are included with every Model
7011order:
l Model 7011Quad 1 x 10Multiplexer Card
l Model 7011Instruction Manual
l Additional accessoties asordered
The CAUTION heading used in this manual explains
hazards that could damage the multiplexer card. Such
damage may invalidate the warranty.
1-2

1.7.3 Instruction manual
The Model 7011 Instruclion Manual is three-hole
driBad so that it can be added to the three-ring binder
of the Model 7001Inshwtion h4anuaI. After removing
the plastic wrapping place the manual in the binder
following the mainframe instruction manuaL Note that
amanual identification tab is included and should pr+
cede the multiplexer card instruction manual.
If an additional instruction manual is required, order
the manual package, KeithIey part number 7011-901-
00.The manual package indudes an instruction manu-
aI and any pertinent addenda.
1.7.4 Repacking for shipment
Should it become necessary to return the Model 7011
for repair, carefully pack the unit in ik original packing
carton or the equivalent, and include the following in-
formation:
l
Advise asto the warranty status of the multiplexer
card.
l
Write ATENTION REPAIR DEPARTMENT on the
shipping label.
l FiII out and include the service form located at the
back of this manuaL
1.8 Optional accessories
The following accessoriesare available for use with the
Model 7011:
Model 70ll-ST - This screw terminal connector card
is identical to the one provided with the Model 7011-S
assembly. An extra screw terminal connector card al-
lows you to wire asecond test system without disturb-
ing the wiring coniiguration of the fist connector card.
Model 7011~KIT-R- This connection kit includes a
96-pin female DIN connector that wiU mate directly to
the connector on the Model 7011-Cor to astandard 9&
pin male DIN bulkhead connector (see Model 7011-
MTR). This connector usessolder cups for connections
to external circoi~ It includes an adapter for a round
cable and the housing.
Model 7Oll-WC-2 - This 2-meter round cable as-
sembly is terminated with a96-pin female DIN connec-
tor on each end. It wiII mate directly to the connector
on the Model 7011-C and to a standard 96-pin male
DIN buIIchead connector (seeModel 7011~MTR).
Model 7011-m-This 96pin male DIN buIkhead
connector uses solder cups for connections to external
circu.i&y. It will mate to the Model 7011~KIT-Rconnec-
tor, and Model 7011~MTC-2cable assembly.
l-3

2
Multiplexing Basics
2.1 Introduction
This section covers the basics for multiplex switching
and is arranged asfollows:
2.2
2.3
Basic multiplex conBgurations: Covers the basic
multiplex configurations; quad 1 x 10con+ra-
tion, dual 1 x 20 configuration and single 1 x 40
cotiguration. The significance of the backplane
jumpers is also covered here.
Typical multiplex switching schemes: Explains
some of the basic ways amultiplexer cambe used
to source or measure. Covers single-ended
switching, differential (floating) switching and
sensing.
24 System expansion: Discusses the various config-
urations that are possible by using multiple
cards.
2.2 Basic multiplexer configurations
A simplified schematic of the Model 7011multiplexer
is shown in Figure 2-l. It is organized as four 1 x 10
multiplexer banks. Each bank has 10 inputs and one
output. Two-pole switching is provided for eachmulti-
plexer input, with HI and LO switched. Two or more
banks canbe jumpered together to expand multiplexer
inputs, and backplane jumpers provide bank connec-
tions to a second card installed in Model 7001 main-
frame.
2-l

Bank to Bank
Jumpers
Backplane Jumpers
(to 7001Analog
Backplane)
Figure 2-l
Mode/ 707 7 simplified schematic
2.2.1 Multiplexer bank-to-bank jumpers
Jumpers are installed on the connector card to connect
multiplexer banks together to form amultiplexer of 1x
40. Each jum:~:- set connects two adjacent banks to-
gether. These j;-nper setsare included with the Model
7011.
The bank-to-bank jumpers allow you to configure the
multiplexer card in a variety of ways. Typical multi-
plexer coniigwations include:
l Four 1x 10rxtitiplexers; no jumpers installed (Fig-
ure 2-2).
l Two 1x 20 multiplexers; Bank A jumpered to Bank
B,Bank C jumpered to Bank D (Figure 2-3).
l One 1 x 40 multiplexer; all bank-to-bank jumpers
installed (Figure 2-4).
Other combinations are possible, including multiplex-
ers of various sizes (in multiples of 10 channels). For
example, you could install jumpers to configure the
card asone 1x 30 and one 1 x 10multiplexer.
Refer to Section 3for information on installing bank-to-
bank jumpers.
2-2

‘*
2
Bank A
‘12
10. ,
Bank B
Bank C
1. .’
Bank D ,I i ~~--z+O”,utD
10, ,
Figure 2-2
Four 1 x 10 multiplexer configuration (jumpers not installed)
1. ,x2 .
Bank 6 .
109 ,x2 l
1. ,z2 .
Bank C .
10. :2 l
1. ,*2 .
Bank D .
10. ,*2 l
Figure 2-3
Two 7x 20 multiplexer configuration (jumpers installed)
2-3

inputs
10 ,’
Bank A 10. ,,: ;I- Output A
1. ,*2
Bank B Jumpers
10. ;2
1. ;2
Bank C Jumpers
10. ./Z
1. ,,2
Bank D
JUllp~S
100 ,‘2
One 1 x 40 multiplexer configuration (jumpers installedl
2-4

2.2.2 Backplane jumpers The three-pole analog backplane of the Model 7001
nminframe is shown in Fieure 2-5.Throwh this analog
backplane the banks of akodel7011 muitplexer car&
installed in one slot, can be connected to the banks (or
There are four pairs of backplane jumpers located on
the relay card. With the jumpers installed, the banks of
the multiplexer card are connected to the analog back- rows) of a compatible card installed in the other slot of
the mainframe.
plane of the Model 7001allowing expansion with a sec-
ond 7001 card installed in the mainframe. With the
jumpers removed (cut), the multiplexer card is isolated
from another card installed in the mainframe.
Model 7001
Card 1 Card 2
_---
r---- ----
1
Analog r----
1
I
I Backplane I I
I
HS
ROW1orBankA
kti I
I I I I
I L L
““IG
Ht Row2OrBa”kB I H
L+-----4~L
I ‘<G
I L I
I L>I I
I
I Q-----f I
I I
I 9 ROW4 or Bank D
:A
I<
g
,?-----f”
L--------l L--------l
H = High
L= LOW
G = Guard ROW= Matrix Card (7012)
ea"!i = MUX Card (7011)
Figure 2-5
Model 7001 analog backplane
2-s