Keithley 7013-S User manual

Keithley 7013-S Manual
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I
nstruct
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on
M
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Contains Operating and Servicing Information
Models 7013-S and 7013-C
20-channel Relay Switch Card
s
7013-901-01 Rev. B / 9-98

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 origi-
nal warranty period, or at least 90 days.
LIMITATION OF WARRANTY
This warranty does not apply to defects resulting from product modification without Keithley’s express written consent, or misuse of
any product or part. This warranty also does not apply to fuses, software, non-rechargeable batteries, damage from battery leakage, or
problems arising from normal wear or failure to follow instructions.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY IMPLIED
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. THE REMEDIES PROVIDED HEREIN ARE
BUYER’S SOLE AND EXCLUSIVE REMEDIES.
NEITHER KEITHLEY INSTRUMENTS, INC. NOR ANY OF ITS EMPLOYEES SHALL BE LIABLE FOR ANY DIRECT, INDI-
RECT, 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 SUSTAINEDAS THE RESULT OF INJURY TO ANY PERSON, OR DAMAGE TO PROPERTY.
Keithley Instruments, Inc. • 28775 Aurora Road • Cleveland, OH 44139 • 440-248-0400 • Fax: [phone] • http://www.keithley.com
CHINA: Keithley Instruments China •Yuan Chen Xin Building, Room 705 • 12 Yumin Road, Dewai, Madian • Beijing 100029 • 8610-62022886 • Fax: [phone]
FRANCE: Keithley Instruments SARL • BP 60 • 3 Allée des Garays • 91122 Palaiseau Cédex • 33-1-60-11-51-55 • Fax: [phone]
GERMANY: Keithley Instruments GmbH • Landsberger Strasse 65 • D-82110 Germering, Munich • 49-89-8493070 • Fax: [phone]
GREAT BRITAIN: Keithley Instruments, Ltd. • The Minster • 58 Portman Road • Reading, Berkshire, England RG3 1EA • 44-1189-596469 • Fax: [phone]
ITALY: Keithley Instruments SRL • Viale S. Gimignano 38 • 20146 Milano • 39-2-48303008 • Fax: [phone]
NETHERLANDS: Keithley Instruments BV • Avelingen West 49 • 4202 MS Gorinchem • 31-(0)183-635333 • Fax: [phone]
SWITZERLAND: Keithley Instruments SA • Kriesbachstrasse 4 • 8600 Dübendorf • 41-1-8219444 • Fax: [phone]
TAIWAN: Keithley Instruments Taiwan • 1FL., 85 Po Ai Street • Hsinchu, Taiwan • 886-3-572-9077 • Fax: [phone]

Models 7013-S and 7013-C Instruction Manual
©1991, Keithley Instruments, Inc.
All Rights Reserved
Cleveland, Ohio, U.S.A.
Second Printing, September 1998
Document Number 7013-901-01 Rev. B

Manual Printing History
The printing 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 which the user should incorporate immedi-
ately into the manual. Addenda are numbered sequentially. When a new Revision is created, all Addenda associ-
ated 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 printing history page.
Revision A(Document Number 7013-901-01) ........................................................................November 1991
Addendum A(Document Number 7013-901-02)........................................................................January 1992
Revision B (Document Number 7013-901-01).........................................................................September 1998
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 in-
struments and accessories would normally be used with non-haz-
ardous voltages, there are situations where hazardous conditions
may be present.
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 are:
Responsible body is the 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 instru-
ment. They must be protected from electric shock and contact with
hazardous live circuits.
Maintenancepersonnel perform routine procedures on the product
to keep it operating, for example, setting the line voltage or replac-
ing consumable materials. Maintenance procedures are described in
the manual. The procedures explicitly state if the operator may per-
form 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 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,or60VDCarepresent.
Agoodsafetypracticeistoexpect
thathazardousvoltageispresentinanyunknowncircuitbefore
measuring.
Users of this product must be protected from electric shock at all
times. The responsible body must ensure that users are prevented
access and/or insulated from every connection point. In some cases,
connections must be exposed to potential human contact. Product
users in these circumstances must be trained to protect themselves
from the risk of electric shock. If the circuit is capable of operating
at or above 1000 volts,
no conductive part of the circuit may be
exposed.
As described in the International Electrotechnical Commission
(IEC) Standard IEC 664, digital multimeter measuring circuits
(e.g., Keithley Models 175A, 199, 2000, 2001, 2002, and 2010) are
Installation Category II. All other instruments’signal terminals are
Installation Category I and must not be connected to mains.
Do not connect switching cards directly to unlimited power circuits.
They are intended to be used with impedance limited sources.
NEVER connect switching cards directly to AC mains. When 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 line cord is connect-
ed to a properly grounded power receptacle. Inspect the connecting
cables, test leads, and jumpers for possible wear, cracks, or breaks
before each use.
For maximum safety, do not touch the product, test cables, or any
other instruments while power is applied to the circuit under test.
ALWAYS remove power from the entire test system and discharge
any capacitors before: connecting or disconnecting cables or 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 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.
If you are using a test fixture, keep the lid closed while power is ap-
plied 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 re-
fer to the operating instructions located in the manual.
The symbol on 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.
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 Instru-
ments. 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 se-
lected 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 the 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.
!

7013-C and 7013-S 20-Channel Relay Switch Cards Specifications
IN
HI
LO
Each Channel
LO
HI
OUT
RELAY SWITCH CONFIGURATION: 20 independent channels of 2-pole switching.
CONTACT CONFIGURATION: 2-pole Form A (Hi, Lo).
CONNECTOR TYPE:
7013-C: 96-pin male DIN connector.
7013-S: Screw terminal, #16AWG maximum wire size, with .092 inch O.D. 28 conductors
per card maximum. #22AWG typical wire size with .062 inch O.D. 88 conductors per
card maximum.
MAXIMUM SIGNAL LEVEL:
DC Signals: 110V DC between any two pins, 1A switched. 30VA (resistive load).
AC Signals: 125V rms and 175V AC peak, between any two pins, 1A switched, 60VA (resis-
tive load).
COMMON MODE VOLTAGE: 175V peak, any pin to chassis.
CONTACT LIFE: Cold Switching: 108closures.
At Maximum Signal Levels: 105closures.
CHANNEL RESISTANCE (per conductor): < 1Ω.
CONTACT POTENTIAL:
7013-C: <1µV per channel contact pair
<3µV typical per single contact.
7013-S: <500nV per channel contact pair
<1.5µV typical per single contact.
OFFSET CURRENT: < 100pA.
ACTUATION TIME: 3ms.
ISOLATION: Channel to Channel: >1010Ω, <25pF.
Differential: >1010Ω, <50pF.
Common Mode: >1010Ω, <100pF.
CROSSTALK (1MHz, 50ΩLoad): <–50dB.
INSERTION LOSS (50ΩSource, 50 Load): <0.1dB below 1MHz, <3dB below 10MHz.
RELAY DRIVE CURRENT (per relay): 16mA.
ENVIRONMENT: Operating: 0° to 50°C, up to 35°C <80% RH.
Storage: –25°C to 65°C.

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 Unpacking and inspection ............................................................................................................................ 1-2
1.7.1 Inspection for damage ............................................................................................................................ 1-2
1.7.2 Shipping contents .................................................................................................................................... 1-2
1.7.3 Instruction manual .................................................................................................................................. 1-3
1.8 Repacking for shipment ................................................................................................................................ 1-3
1.9 Optional accessories ....................................................................................................................................... 1-3
2 Relay Switching Basics
2.1 Introduction .................................................................................................................................................... 2-1
2.2 Basic switch configuration (DPST) .............................................................................................................. 2-1
2.3 Multiple pole configurations ........................................................................................................................ 2-2
3 Card Connections and Installation
3.1 Introduction .................................................................................................................................................... 3-1
3.2 Handling precautions .................................................................................................................................... 3-1
3.3 Connections ..................................................................................................................................................... 3-1
3.3.1 Screw terminal connector card ............................................................................................................. 3-2
3.3.2 Multi-pin (mass termination) connector card .................................................................................... 3-3
3.4 Typical connection schemes ......................................................................................................................... 3-8
3.4.1 Connection scheme for Model 7013-C ................................................................................................ 3-8
3.4.2 Connection scheme for Model 7013-S ................................................................................................. 3-8
3.5 Model 7013 installation and removal ........................................................................................................ 3-11
4 Operation
4.1 Introduction .................................................................................................................................................... 4-1
4.2 Power limits .................................................................................................................................................... 4-1
4.2.1 Maximum signal levels .......................................................................................................................... 4-1
4.2.2 Reactive loads ......................................................................................................................................... 4-1
i

4.3 Mainframe control of relay card ................................................................................................................... 4-3
4.3.1 Channel assignments ............................................................................................................................. 4-3
4.3.2 Front panel control ................................................................................................................................. 4-5
4.3.3 IEEE-488 bus operation .......................................................................................................................... 4-5
4.4 Relay switching examples ............................................................................................................................. 4-6
4.4.1 Controlling sources, supplies and loads ............................................................................................. 4-6
4.4.2 Activating external devices and circuits ............................................................................................. 4-8
4.4.3 Switching loads ....................................................................................................................................... 4-9
4.5 Measurement considerations ...................................................................................................................... 4-10
4.5.1 Path isolation ......................................................................................................................................... 4-10
4.5.2 Magnetic fields ...................................................................................................................................... 4-11
4.5.3 Radio frequency interference .............................................................................................................. 4-11
4.5.4 Ground loops ........................................................................................................................................ 4-11
4.5.5 Keeping connectors clean .................................................................................................................... 4-12
4.5.6 AC frequency response ........................................................................................................................ 4-12
5 Service Information
5.1 Introduction ..................................................................................................................................................... 5-1
5.2 Handling and cleaning precautions ............................................................................................................. 5-1
5.3 Performance verification ............................................................................................................................... 5-2
5.3.1 Environmental conditions ..................................................................................................................... 5-2
5.3.2 Recommended equipment .................................................................................................................... 5-2
5.3.3 Switch card connections ........................................................................................................................ 5-3
5.3.4 Channel resistance tests ......................................................................................................................... 5-3
5.3.5 Offset current tests .................................................................................................................................. 5-5
5.3.6 Contact potential tests ............................................................................................................................ 5-5
5.3.7 Channel to channel isolation tests ........................................................................................................ 5-7
5.3.8 Differential isolation tests .................................................................................................................... 5-10
5.3.9 Common-mode isolation tests ............................................................................................................ 5-11
5.4 Special handling of static-sensitive devices .............................................................................................. 5-12
5.5 Principles of operation ................................................................................................................................. 5-12
5.5.1 Block diagram ....................................................................................................................................... 5-12
5.5.2 ID data circuits ...................................................................................................................................... 5-12
5.5.3 Relay control .......................................................................................................................................... 5-12
5.5.4 Relay power control ............................................................................................................................. 5-14
5.5.5 Power-on safeguard ............................................................................................................................. 5-14
5.6 Troubleshooting ............................................................................................................................................ 5-15
5.6.1 Troubleshooting equipment ................................................................................................................ 5-15
5.6.2 Troubleshooting access ........................................................................................................................ 5-15
5.6.3 Troubleshooting procedure ................................................................................................................. 5-15
6 Replaceable Parts
6.1 Introduction ..................................................................................................................................................... 6-1
6.2 Parts lists .......................................................................................................................................................... 6-1
6.3 Ordering information ..................................................................................................................................... 6-1
6.4 Factory service ................................................................................................................................................. 6-1
6.5 Component layouts and schematic diagrams ............................................................................................ 6-2
ii

List of Illustrations
2 Relay Switching Basics
Figure 2-1 Model 7013 20-channel switch card (simplified schematic) ............................................................. 2-1
Figure 2-2 4PST configuration using card pair ..................................................................................................... 2-2
3 Card Connections and Installation
Figure 3-1 Screw terminal connector card ............................................................................................................. 3-2
Figure 3-2 Typical terminal block connections ..................................................................................................... 3-3
Figure 3-3 Cable clamp for screw terminal connector card ................................................................................ 3-3
Figure 3-4 Multi-pin connector card terminal identification .............................................................................. 3-4
Figure 3-5 Typical round cable connection techniques ....................................................................................... 3-6
Figure 3-6 Model 7011-MTR connector pinout ..................................................................................................... 3-7
Figure 3-7 Model 7011-KIT-R (cable) assembly .................................................................................................... 3-7
Figure 3-8 Typical connection scheme for Model 7013-C ................................................................................... 3-9
Figure 3-9 Typical connection scheme for Model 7013-S .................................................................................. 3-10
Figure 3-10 Model 7013-S card installation in Model 7001 ................................................................................. 3-12
Figure 3-11 Model 7013-C card installation in Model 7001 ................................................................................ 3-13
4 Operation
Figure 4-1 Limiting inductive reaction voltage .................................................................................................... 4-2
Figure 4-2 Limiting capacitive reaction current ................................................................................................... 4-2
Figure 4-3 Channel status display (two Model 7013 cards installed) ................................................................ 4-3
Figure 4-4 Display organization for relay card channels .................................................................................... 4-4
Figure 4-5 Channel assignments ............................................................................................................................. 4-4
Figure 4-6 Controlling sources, supplies and loads ............................................................................................. 4-7
Figure 4-7 Controlling external devices and circuits ........................................................................................... 4-8
Figure 4-8 Switching loads ...................................................................................................................................... 4-9
Figure 4-9 Path isolation resistance ...................................................................................................................... 4-10
Figure 4-10 Voltage attenuation by path isolation resistance ............................................................................. 4-10
Figure 4-11 Power line ground loops ..................................................................................................................... 4-12
Figure 4-12 Eliminating ground loops ................................................................................................................... 4-12
iii

5 Service Information
Figure 5-1 Channel resistance testing ..................................................................................................................... 5-4
Figure 5-2 Offset current testing .............................................................................................................................. 5-6
Figure 5-3 Contact potential testing ........................................................................................................................ 5-7
Figure 5-4 Channel to channel testing .................................................................................................................... 5-8
Figure 5-5 Differential isolation testing ................................................................................................................ 5-10
Figure 5-6 Common-mode isolation testing ........................................................................................................ 5-11
Figure 5-7 Model 7013 block diagram .................................................................................................................. 5-13
Figure 5-8 Start and stop sequences ...................................................................................................................... 5-13
Figure 5-9 Transmit and acknowledge sequence ................................................................................................ 5-14
iv

List of Tables
3 Card Connections and Installation
Table 3-1 Mass termination accessories ............................................................................................................... 3-3
5 Service Information
Table 5-1 Verification equipment .......................................................................................................................... 5-2
Table 5-2 Channel to channel isolation tests ....................................................................................................... 5-9
Table 5-3 Recommended troubleshooting equipment ..................................................................................... 5-15
Table 5-4 Troubleshooting procedure ................................................................................................................ 5-16
6 Replaceable Parts
Table 6-1 Relay board for Model 7013-S and 7013-C, parts list ......................................................................... 6-3
Table 6-2 Screw terminal board for Model 7013-S, parts list ............................................................................. 6-4
Table 6-3 Mass terminated board for Model 7013-C, parts list .......................................................................... 6-4
v

1
General Information
1-1
1.1 Introduction
This section contains general information about the
Model 7013 20-Channel Relay card.
There are two basic versions of this relay switch card;
the Model 7013-S and the Model 7013-C. The Model
7013-S assembly consists of a screw terminal connector
card and the relay card. External test circuits are wired
directly to the screw terminals of the connector card.
Also available from Keithley is the Model 7013-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 configuration of the first
test system.
The Model 7013-C assembly consists of a multi-pin
(mass termination) connector card and the relay card.
External test circuit connections to the 7013 are made
via the 96-pin male DIN connector on the connector
card. Keithley offers a variety of optional accessories
that can be used to make connections to the connector
card (see paragraph 1.9).
The rest of Section 1 is arranged in the following
manner:
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 7013 is a general purpose, 20-channel relay
switch card. Some of the key features include:
• Low contact potential and offset current for mini-
mal effects on low-level signals.
• The connector board detaches from the relay
board. This allows easy access to the screw termi-
nals of the Model 7013-S.
1.3 Warranty information
Warranty information is located on the inside front
cover of this instruction manual. Should your Model
7013 require warranty service, contact the Keithley rep-
resentative or authorized repair facility in your area for

General Information
1-2
further information. When returning the card 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 switch
card or manual will be explained in an addendum
included with the card. Addenda are provided in a
page-replacement format. Simply replace the obsolete
pages with the new pages.
1.5 Safety symbols and terms
The following symbols and terms may be found on an
instrument or used in this manual.
The symbol on an instrument indicates that the
user should refer to the operating instructions located
in the instruction manual.
The symbol on an instrument shows that high
voltage may be present on the terminal(s). Use 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.
The CAUTION heading used in this manual explains
hazards that could damage the switch card. Such dam-
age may invalidate the warranty.
!
1.6 Specifications
Model 7013 specifications may be found at the front of
this manual. These specifications are exclusive of the
Model 7001 mainframe specifications.
1.7 Unpacking and inspection
1.7.1 Inspection for damage
The Model 7013 is packaged in a re-sealable, anti-static
bag to protect it from damage due to static discharge
and from contamination that could degrade its perfor-
mance. Before removing the card from the bag, observe
the following precautions on handling.
Handling precautions:
1. Always grasp the card by the side edges and 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
7013 order:
• Model 7013 20-channel Relay Switch Card
• Model 7013 Instruction Manual
• Additional accessories as ordered.

General Information
1-3
1.7.3 Instruction manual
The Model 7013 Instruction Manual is three-hole
drilled so that it can be added to the three-ring binder
of the Model 7001 Instruction Manual. After removing
the plastic wrapping, place the manual in the binder
following the mainframe instruction manual. Note that
a manual identification tab is included and should pre-
cede the switch card instruction manual.
If an additional instruction manual is required, order
the manual package, Keithley part number 7013-901-
00. The manual package includes an instruction man-
ual and any pertinent addenda
1.8 Repacking for shipment
Should it become necessary to return the Model 7013
for repair, carefully pack the unit in its original packing
carton or the equivalent, and include the following
information:
• Advise as to the warranty status of the switch card.
• Write ATTENTION REPAIR DEPARTMENT on
the shipping label.
• Fill out and include the service form located at the
back of this manual.
1.9 Optional accessories
The following accessories are available for use with the
Model 7013:
Model 7013-ST  This screw terminal connector card
is identical to the one provided with the Model 7013-S
assembly. An extra screw terminal connector card
allows you to wire a second test system without dis-
turbing the wiring configuration of the first connector
card.
Model 7011-KIT-R  This connection kit includes a
96-pin female DIN connector that will mate directly to
the connector on the Model 7013-C or to a standard
96-pin male DIN bulkhead connector (see Model 7011-
MTR). This connector uses solder cups for connections
to external circuitry. It includes an adapter for a round
cable and the housing.
Model 7011-MTC-2  This two-meter round cable
assembly is terminated with a 96-pin female DIN con-
nector on each end. It will mate directly to the connec-
tor on the Model 7013-C and to a standard 96-pin male
DIN bulkhead connector (see Model 7011-MTR).
Model 7011-MTR  This 96-pin male DIN bulkhead
connector uses solder cups for connections to external
circuitry. It will mate to the Model 7011-KIT-R connec-
tor, and Model 7011-MTC-2 cable assembly.

2
Relay Switching Basics
2-1
2.1 Introduction
This section covers switching basics and is arranged as
follows:
2.2 Basic switch configuration  Covers the basic
double-pole single-throw (DPST) switch
configuration.
2.3 Multiple pole configurations  Shows how to
use two or more relays together for multiple pole
switching.
2.2 Basic switch configuration (DPST)
A simplified schematic of the Model 7013 switch card
is shown in Figure 2-1. The card consists of 20 indepen-
dent channels. Each channel is made up of a double-
pole single-throw (DPST), normally open (NO) switch.
HI
LO
IN
HI
LO
OUT
One of 20 Channels
Figure 2-1
Model 7013 20-channel switch card (simplified
schematic)

Relay Switching Basics
2-2
2.3 Multiple pole configurations
Multiple pole configurations are possible by energiz-
ing two or more relays at the same time. A four-pole
single-throw (4PST) switch system can be configured
using two relay channels. Both loads are selected when
the two relays are energized. Each additional relay
adds two poles to the switch system.
A convenient way to perform multiple-pole switching
is to use two Model 7013 switch cards; one installed in
Slot 1 of the mainframe and the other installed in Slot
2. By using the Card-Pairing feature of the Model 7001,
closing a channel on Card 1 will automatically close the
corresponding channel on Card 2. For example, closing
channel 1 on Card 1 will automatically close Channel 1
on Card 2 providing 4PST switching, as shown in Fig-
ure 2-2.
H
L
IN
Card 1, Channel 1 Load A
H
L
OUT
H
L
IN
Card 2, Channel 1 Load B
H
L
OUT
Both Relays Energized Simultaneously
Figure 2-2
4PST configuration using card pair

3
Card Connections
and Installation
3-1
3.1 Introduction
WARNING
The procedures in this section are
intended only for qualified service
personnel.Donotperformthesepro-
cedures unless qualified to do so.
Failuretorecognizeandobservenor-
mal safety precautions could result
in personal injury or death.
The information in this section is arranged as follows:
3.2 Handling precautions  Explains precautions
that must be followed to prevent contamination
to the switch card assembly. Contamination
could degrade the performance of the switch
card.
3.3 Connections  Covers the basics for connecting
external circuitry to the two available connector
cards; the screw terminal connector card and the
multi-pin connector card.
3.4 Typical connection schemes  Provides some
typical connection schemes for single card, two-
card, and two-mainframe system configurations.
3.5 Model 7013 installation and removal  Pro-
vides the procedures to install and remove the
switch card assembly in the Model 7001 main-
frame.
3.2 Handling precautions
To maintain high impedance isolation, care should be
taken when handling the relay card to avoid contami-
nation from such foreign materials as body oils. Such
contamination can substantially lower leakage resis-
tances, thus degrading performance.
To avoid possible contamination, always grasp the
relay card and the connector card by the side edges or
shields. Do not touch the board surfaces or compo-
nents. On connectors, do not touch areas adjacent to
the electrical contacts. Dirt build-up over a period of
time is another possible source of contamination. To
avoid this problem, operate the mainframe and switch
card assembly in a clean environment.
If a card becomes contaminated, it should be thor-
oughly cleaned as explained in paragraph 5.2.
3.3 Connections
This paragraph provides the basic information needed
to connect your external test circuitry to the switch
card. It includes detailed information on the two avail-
able connector cards.

Card Connections and Installation
3-2
WARNING
Thefollowing connection informa-
tionisintendedtobeusedbyquali-
fied service personnel. Failure to
recognize and observe standard
safety precautions could result in
personal injury or death.
3.3.1 Screw terminal connector card
The screw terminal connector card is shown in Figure
3-1. Connections are made directly to the screw termi-
nals of the 20-terminal blocks. One terminal block is
dedicated to each of the 20 channels. Each screw termi-
nal will accommodate #16-22 AWG wire.
Wiring procedure
Perform the following procedure to wire circuitry to
the screw terminal connector card:
WARNING
Make sure all power is off and any
storedenergyinexternalcircuitryis
discharged.
1. If mated together, separate the connector card from
the relay card by removing the mounting screw
and pulling the two cards away from each other.
Remember to only handle the cards by the edges
and shields to avoid contamination.
2. Using an insulated screwdriver, connect the
circuitry to the appropriate terminals. Figure 3-2
shows how connections would be made to deliver
power to a DUT (device under test) using Channel
2.
3. Referring to Figure 3-3, remove the top half of the
cable clamp as follows:
a. Loosen the cable clamp screw enough to disen-
gage it from the bottom half of the cable clamp.
b. Using your thumb and forefinger, press the
retaining clips inward and, with your other
hand, remove the top half of the clamp.
J1004
P1003P1002 J1005J1006J1007J1008
J1014J1015J1016J1017J1018
J1009J1010J1011J1012J1013
J1019J1020J1021J1022J1023
CH20CH16CH12CH8CH4 CH18CH14CH10CH6CH2
OUT
OUT
OUT
OUT
OUT
MAX VOLTAGE TERMINAL TO TERMINAL
OR CHASSIS: 110VDC OR ±175VAC PEAK
USER SUPPLIED LETHAL VOLTAGES MAY
BE PRESENT ON CONNECTORS OR PC BOARD
KEITHLEY 1991
7013-162-04C
MADE IN USA
CAUTION:
WARNING:
OUT
OUT
OUT
OUT
OUT
IN
IN
IN
IN
IN
IN
4
IN
IN
IN
IN
CH19CH15CH11CH7CH3 CH17CH13CH9CH5CH1
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
C
Figure 3-1
Screw terminal connector card