Model 7036 40-Channel Single

Model 7036 40-Channel Single
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com
Instruction Manual
Model 7036
40-Channel Single-Pole
Relay Switch Card
Contains Operating and Servicing Information
7036-901-01 Rev. A / 4-97
WARRANTY
Keithley Instruments, Inc. warrants this product to be free from defects in material and workmanship for a period of 1 year from date of
shipment.
Keithley Instruments, Inc. warrants the following items for 90 days from the date of shipment: probes, cables, rechargeable batteries,
diskettes, and documentation.
During the warranty period, we will, at our option, either repair or replace any product that proves to be defective.
To exercise this warranty, write or call your local Keithley representative, or contact Keithley headquarters in Cleveland, Ohio. You will
be given prompt assistance and return instructions. Send the product, transportation prepaid, to the indicated service facility. Repairs
will be made and the product returned, transportation prepaid. Repaired or replaced products are warranted for the balance of the original warranty period, or at least 90 days.
LIMITATION OF WARRANTY
This warranty does not apply to defects resulting from product modification without Keithley’s express written consent, or misuse of
any product or part. This warranty also does not apply to fuses, software, non-rechargeable batteries, damage from battery leakage, or
problems arising from normal wear or failure to follow instructions.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY IMPLIED
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. THE REMEDIES PROVIDED HEREIN ARE
BUYER’S SOLE AND EXCLUSIVE REMEDIES.
NEITHER KEITHLEY INSTRUMENTS, INC. NOR ANY OF ITS EMPLOYEES SHALL BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF ITS INSTRUMENTS AND
SOFTWARE EVEN IF KEITHLEY INSTRUMENTS, INC., HAS BEEN ADVISED IN ADVANCE OF THE POSSIBILITY OF
SUCH DAMAGES. SUCH EXCLUDED DAMAGES SHALL INCLUDE, BUT ARE NOT LIMITED TO: COSTS OF REMOVAL
AND INSTALLATION, LOSSES SUSTAINED AS THE RESULT OF INJURY TO ANY PERSON, OR DAMAGE TO PROPERTY.
CHINA:
FRANCE:
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GREAT BRITAIN:
ITALY:
NETHERLANDS:
SWITZERLAND:
TAIWAN:
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Keithley Instruments Taiwan • 1FL., 1, Min Yu First Street • Hsinchu, Taiwan, R.O.C. • 886-35-778462 • Fax: 886-35-778455
Model 7036 40-Channel Single-Pole Relay Switch Card
Instruction Manual
©1997, Keithley Instruments, Inc.
All rights reserved.
Cleveland, Ohio, U.S.A.
First Printing, April 1997
Document Number: 7036-901-01 Rev. A
Manual Print History
The print history shown below lists the printing dates of all Revisions and Addenda created for this manual. The Revision
Level letter increases alphabetically as the manual undergoes subsequent updates. Addenda, which are released between Revisions, contain important change information that the user should incorporate immediately into the manual. Addenda are numbered sequentially. When a new Revision is created, all Addenda associated with the previous Revision of the manual are
incorporated into the new Revision of the manual. Each new Revision includes a revised copy of this print history page.
Revision A (Document Number 7036-901-01)....................................................................................... April 1997
All Keithley product names are trademarks or registered trademarks of Keithley Instruments, Inc.
Other brand and product names are trademarks or registered trademarks of their respective holders.
Safety Precautions
The following safety precautions should be observed before using
this product and any associated instrumentation. Although some instruments and accessories would normally be used with non-hazardous voltages, there are situations where hazardous conditions
may be present.
This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury. Read the operating information
carefully before using the product.
The types of product users are:
Responsible body 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 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, 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.
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 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)
measuring circuits are Installation Category II. All other instruments’ signal terminals are Installation Category I and must not be
connected to mains.
Do not connect switching cards directly to unlimited power circuits.
They are intended to be used with impedance limited sources.
NEVER connect switching cards directly to AC mains. When connecting sources to switching cards, install protective devices to limit fault current and voltage to the card.
Before operating an instrument, make sure the line cord is connected to a properly grounded power receptacle. Inspect the connecting
cables, test leads, and jumpers for possible wear, cracks, or breaks
before each use.
For maximum safety, do not touch the product, test cables, or any
other instruments while power is applied to the circuit under test.
ALWAYS remove power from the entire test system and discharge
any capacitors before: connecting or disconnecting cables or jumpers, installing or removing switching cards, or making internal
changes, such as installing or removing jumpers.
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 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.
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. Always read the associated information 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 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.
MODEL 7036 SPECIFICATIONS
RELAY SWITCH CONFIGURATION: 40 independent channels of
1-pole switching.
CONTACT CONFIGURATION: 1 pole Form A.
CONNECTOR TYPE: 96-pin male DIN card connector.
MAXIMUM SIGNAL LEVEL: 60VDC, 30V rms, 42V peak betwen any
two inputs or chassis, 1A switched. 30VA (resistive load).
CONTACT LIFE:
Cold Switching: 108 closures.
At Maximum Signal Levels: 105 closures.
CHANNEL RESISTANCE (per conductor): <1Ω.
CONTACT POTENTIAL: <4µV per contact.
OFFSET CURRENT: <100pA.
ACTUATION TIME: 3ms.
ISOLATION:
Channel to Channel: >109Ω, <25pF.
Common Mode:
>109Ω, <100pF.
CROSSTALK (1MHz, 50Ω Load): <–40dB.
INSERTION LOSS (50Ω Source, 50Ω Load): <0.3dB below 1MHz,
<3dB below 10MHz.
RELAY DRIVE CURRENT (per relay): 16mA.
EMC: Conforms with European Union Directive 89/336/EEC
EN 55011, EN 50082-1, EN 61000-3-2 and 61000-3-3, FCC part 15
class B.
SAFETY: Conforms with European Union Directive 73/23/EEC
EN 61010-1, UL 3111-1.
ENVIRONMENT: Operating: 0° to 50°C, up to 35°C at <80% R.H.
Storage: –25°C to 65°C.
Specifications are subject to change without notice.
Each Channel
IN
OUT
Table of Contents
1
General Information
Introduction .......................................................................................................................................................... 1-1
Features ............................................................................................................................................................... 1-1
Warranty information.......................................................................................................................................... 1-1
Manual addenda .................................................................................................................................................. 1-2
Safety symbols and terms ................................................................................................................................... 1-2
Specifications ...................................................................................................................................................... 1-2
Unpacking and inspection ................................................................................................................................... 1-2
Inspection for damage ................................................................................................................................. 1-2
Shipping contents ........................................................................................................................................ 1-2
Instruction manual....................................................................................................................................... 1-3
Repacking for shipment ...................................................................................................................................... 1-3
Optional accessories............................................................................................................................................ 1-3
2
Relay Switching Basics
Introduction ......................................................................................................................................................... 2-1
Basic switch configuration (SPST) ..................................................................................................................... 2-1
3
Card Connections and Installation
Introduction .........................................................................................................................................................
Handling precautions ..........................................................................................................................................
Multi-pin (mass termination) connections ..........................................................................................................
Typical connection technique .....................................................................................................................
Typical connection scheme .........................................................................................................................
Model 7036 installation and removal..................................................................................................................
Switch card installation ...............................................................................................................................
Switch card removal....................................................................................................................................
3-1
3-1
3-2
3-4
3-6
3-7
3-7
3-7
i
4
Operation
Introduction ......................................................................................................................................................... 4-1
Power limits......................................................................................................................................................... 4-1
Maximum signal levels................................................................................................................................ 4-1
Reactive loads.............................................................................................................................................. 4-1
Mainframe control of relay card.......................................................................................................................... 4-2
Channel assignments ................................................................................................................................... 4-3
Front panel control ...................................................................................................................................... 4-5
IEEE-488 bus operation .............................................................................................................................. 4-6
Measurement considerations ............................................................................................................................... 4-7
Path isolation ............................................................................................................................................... 4-7
Magnetic fields ............................................................................................................................................ 4-7
Radio frequency interference ...................................................................................................................... 4-8
Ground loops ............................................................................................................................................... 4-8
Keeping connectors clean............................................................................................................................ 4-9
AC frequency response................................................................................................................................ 4-9
5
Service Information
Introduction ......................................................................................................................................................... 5-1
Handling and cleaning precautions ..................................................................................................................... 5-1
Performance verification ..................................................................................................................................... 5-2
Environmental conditions............................................................................................................................ 5-2
Recommended equipment ........................................................................................................................... 5-2
Switch card connections .............................................................................................................................. 5-2
Channel resistance tests ............................................................................................................................... 5-3
Offset current tests....................................................................................................................................... 5-4
Contact potential tests.................................................................................................................................. 5-5
Channel to channel isolation tests ............................................................................................................... 5-5
Common-mode isolation tests ..................................................................................................................... 5-8
Special handling of static-sensitive devices ........................................................................................................ 5-9
Principles of operation......................................................................................................................................... 5-9
Block diagram ............................................................................................................................................. 5-9
ID data circuits .......................................................................................................................................... 5-10
Relay control ............................................................................................................................................. 5-10
Relay power control .................................................................................................................................. 5-10
Power-on safeguard ................................................................................................................................... 5-11
Troubleshooting................................................................................................................................................. 5-11
Troubleshooting equipment....................................................................................................................... 5-11
Troubleshooting access ............................................................................................................................. 5-11
Troubleshooting procedure........................................................................................................................ 5-12
6
Replaceable Parts
Introduction ......................................................................................................................................................... 6-1
Parts lists...............................................................................................................................................................6-1
Ordering information........................................................................................................................................... 6-1
Factory service..................................................................................................................................................... 6-1
Component layouts and schematic diagrams ...................................................................................................... 6-2
Index
ii
List of Illustrations
2
Relay Switching Basics
Figure 2-1
Model 7036 40-channel switch card (simplified schematic) ...................................................................... 2-1
3
Card Connections and Installation
Figure 3-1
Figure 3-2
Figure 3-3
Figure 3-4
Figure 3-5
Multi-pin connector card terminal identification ........................................................................................
Typical cable connection technique ............................................................................................................
Model 7011-KIT-R (cable) assembly .........................................................................................................
Typical connection scheme for Model 7036...............................................................................................
Model 7036 card installation in Model 7001 ..............................................................................................
4
Operation
Figure 4-1
Figure 4-2
Figure 4-3
Figure 4-4
Figure 4-5
Figure 4-6
Figure 4-7
Figure 4-8
Figure 4-9
Figure 4-10
Limiting inductive reaction voltage ............................................................................................................
Limiting capacitive reaction current ...........................................................................................................
Model 7001 channel status display (two cards installed)............................................................................
Model 7002 channel status display (slot 1).................................................................................................
Display organization for relay card channels..............................................................................................
Channel assignments...................................................................................................................................
Path isolation resistance ..............................................................................................................................
Voltage attenuation by path isolation resistance.........................................................................................
Power line ground loops .............................................................................................................................
Eliminating ground loops............................................................................................................................
5
Service Information
Figure 5-1
Figure 5-2
Figure 5-3
Figure 5-4
Figure 5-5
Figure 5-6
Figure 5-7
Figure 5-8
Channel resistance testing ........................................................................................................................... 5-3
Offset current testing................................................................................................................................... 5-4
Contact potential testing.............................................................................................................................. 5-5
Channel to channel testing .......................................................................................................................... 5-6
Common-mode isolation testing ................................................................................................................. 5-8
Model 7036 block diagram ......................................................................................................................... 5-9
Start and stop sequences ........................................................................................................................... 5-10
Transmit and acknowledge sequence........................................................................................................ 5-10
3-2
3-5
3-5
3-6
3-7
4-2
4-2
4-3
4-3
4-4
4-4
4-7
4-7
4-8
4-8
iii
List of Tables
3
Card Connections and Installation
Table 3-1
Table 3-2
Multi-pin connector card terminal designation cross-reference.................................................................. 3-3
Mass termination accessories...................................................................................................................... 3-4
5
Service Information
Table 5-1
Table 5-2
Table 5-3
Table 5-4
Verification equipment ............................................................................................................................... 5-2
Channel to channel isolation tests ............................................................................................................... 5-7
Recommended troubleshooting equipment............................................................................................... 5-11
Troubleshooting procedure ....................................................................................................................... 5-12
6
Replaceable Parts
Table 6-1
Table 6-2
Table 6-3
Relay card for Model 7036, parts list.......................................................................................................... 6-3
Mass-terminated connector card for Model 7036, parts list ....................................................................... 6-5
Model 7011-KIT-R 96-pin Female DIN connector kit ................................................................................ 6-7
v
1
General Information
Introduction
Features
This section contains general information about the Model
7036 40-Channel Single-Pole Relay Switch Card.
The Model 7036 is a general purpose switch card with 40
independent channels for greater programming fl xibility.
Some of the key features include:
The Model 7036 switch card consists of a multi-pin (mass
termination) connector card and a relay card. External test
circuit connections to the Model 7036 are made via the 96pin male DIN connector on the connector card. Keithley
offers an optional Model 7011-MTR bulkhead connector
that can be used to make connections to the connector card.
(See the optional accessories paragraph at the end of this
section.)
The rest of Section 1 is arranged in the following manner:
• Features
• Warranty information
• Low contact potential and offset current for minimal
effects on low-level signals.
• High isolation resistance >1GΩ for minimal load
effects.
• Model 7011-KIT-R connector kit that includes a 96-pin
female DIN connector that will mate directly to the connector on the Model 7036 or to a standard 96-pin male
DIN bulkhead connector (see Model 7011-MTR). This
connector uses solder cups for connections to external
circuitry and includes an adapter for a round cable and
the housing.
• Manual addenda
• Safety symbols and terms
Warranty information
• Specifications
Warranty information is located on the inside front cover of
this instruction manual. Should your Model 7036 require
warranty service, contact the Keithley representative or
authorized repair facility in your area for 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.
• Unpacking and inspection
• Repacking for shipment
• Optional accessories
1-1
General Information
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.
Replace the obsolete pages with the new pages.
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 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 switch card. Such damage may
invalidate the warranty.
Specifications
Model 7036 specifications may be found at the front of this
manual. These specifications are exclusive of the
Model 7001/7002 mainframe specifications
1-2
Unpacking and inspection
Inspection for damage
The Model 7036 is packaged in a resealable, anti-static bag
to protect it from damage due to static discharge and from
contamination that could degrade its performance. Before
removing the card from the bag, observe the following handling precautions.
Handling pr ecautions
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 7001/7002 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.
Shipping contents
The following items are included with every Model 7036
order:
• Model 7036 40-Channel Single-Pole Relay Switch
Card
• Model 7036 Instruction Manual
• Model 7011-KIT-R 96-pin Female DIN Connector Kit
• Additional accessories as ordered
General Information
Instruction manual
Optional accessories
The Model 7036 Instruction Manual is three-hole drilled so
that it can be added to the three-ring binder of the Model
7001 or Model 7002 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 precede the switch card
instruction manual.
The following accessory is available for use with the Model
7036:
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 connector.
If an additional instruction manual is required, order the
manual package, Keithley part number 7036-901-00. The
manual package includes an instruction manual and any pertinent addenda.
Repacking for shipment
Should it become necessary to return the Model 7036 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.
1-3
2
Relay Switching Basics
Introduction
IN 1
This section covers the basic single-pole, single-throw
(SPST) switch configuration
Basic switch configuration (SPST)
A simplified schematic of the Model 7036 switch card is
shown in Figure 2-1. The card consists of 40 independent
channels. Each channel is made up of a single-pole, singlethrow (SPST), normally open (NO) switch.
OUT 1
One of 40 Channels
Figure 2-1
Model 7036 40-channel switch card (simplified s hematic)
2-1
3
Card Connections and Installation
Introduction
Handling precautions
WARNING
The procedures in this section are
intended only for qualified service personnel. Do not perform
these procedures unless qualifie
to do so. Failure to recognize and
observe normal safety precautions could result in personal
injury or death.
The information in this section is arranged as follows:
To maintain high impedance isolation, care should be taken
when handling the card to avoid contamination from such foreign materials as body oils. Such contamination can substantially lower leakage resistances and degrade 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 components. On connectors, do
not touch areas adjacent to the electrical contacts. Dirt
buildup over a period of time is another possible source of
contamination. To avoid this problem, operate the mainframe
and switch card in a clean environment.
• Handling precautions
 Explains precautions
that must be followed to prevent contamination to the
switch card. Contamination could degrade the performance of the card.
• Multi-pin (mass termination) connections
 Covers the basics for connecting external circuitry to
the connector card.
• Model 7036 installation and removal
 Provides the procedures to install and remove the Model
7036 switch card from the Model 7001/7002 mainframe.
3-1
Card Connections and Installation
If a card becomes contaminated, it should be thoroughly
cleaned as explained in Section 5.
WARNING
The following connection information is intended to be used by
qualified service personnel. Failure to recognize and observe
standard
safety
precautions
could result in personal injury or
death.
Multi-pin (mass termination)
connections
Since connections to external circuitry are made at the 96-pin
male DIN bulkhead connector, there is no need to separate
the connector card from the relay card. If the connector card
is separated from the relay card, carefully mate them
together and install the supplied 4-40 screw to secure the
cards. Make sure to handle the cards by the edges and shields
to avoid contamination.
Terminal identification for the DIN connector of the multipin connector card is provided by Figure 3-1 and Table 3-1.
This connector will mate to a 96-pin female DIN connector.
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
c
b
a
Figure 3-1
Multi-pin connector card terminal identificatio
3-2
View pin side
of connector
Card Connections and Installation
Table 3-1
Multi-pin connector card terminal designation cross-reference
Connector
designator
1a-32c
Schemati
c
designato
r
1-96
IN 1
13a
13
OUT 1
14a
IN 2
Connecto
r
designato
r
1a-32c
Schemati
c
designato
r
1-96
Connector
designator
1a-32c
Schematic
designato
r
1-96
IN 17
24a
24
IN 33
12c
76
14
OUT 17
23a
23
OUT 33
11c
75
15a
15
IN 18
26a
26
IN 34
4c
68
OUT 2
16a
16
OUT 18
25a
25
OUT 34
3c
67
IN 3
6a
6
IN 19
28a
28
IN 35
28c
92
OUT 3
7a
7
OUT 19
7b
39
OUT 35
6c
70
IN 4
12a
12
IN 20
17a
17
IN 36
9c
73
OUT 4
11a
11
OUT 20
31c
95
OUT 36
10c
74
IN 5
2a
2
IN 21
23b
55
IN 37
2c
66
OUT 5
3a
3
OUT 21
24b
56
OUT 37
1c
65
IN 6
4a
4
IN 22
25b
57
IN 38
14c
78
OUT 6
5a
5
OUT 22
26b
58
OUT 38
13c
77
IN 7
21a
21
IN 23
17b
49
IN 39
16c
80
OUT 7
18a
18
OUT 23
18b
50
OUT 39
26c
90
IN 8
8a
8
IN 24
19b
51
IN 40
20c
84
OUT 8
10a
10
OUT 24
20b
52
OUT 40
30c
94
IN 9
4b
36
IN 25
13b
45
chassis
9a
9
OUT 9
5b
37
OUT 25
14b
46
chassis
9b
41
IN 10
12b
44
IN 26
15b
47
nc
22a
22
OUT 10
11b
43
OUT 26
16b
48
nc
27a
27
IN 11
30a
30
IN 27
27b
59
nc
29a
29
OUT 11
32c
96
OUT 27
28b
60
nc
32a
32
IN 12
20a
20
IN 28
29b
61
nc
6b
38
OUT 12
19a
19
OUT 28
30b
62
nc
8b
40
IN 13
3b
35
IN 29
21c
85
nc
5c
69
OUT 13
2b
34
OUT 29
22c
86
nc
7c
71
IN 14
21b
53
IN 30
23c
87
nc
15c
79
OUT 14
22b
54
OUT 30
24c
88
nc
17c
81
IN 15
10b
42
IN 31
18c
82
nc
19
83
OUT 15
31a
31
OUT 31
8c
72
nc
25c
89
IN 16
1a
1
IN 32
32b
64
nc
27c
91
OUT 16
1b
33
OUT 32
31b
63
nc
29c
93
Switch
terminal
Switch
terminal
Switch
terminal
3-3
Card Connections and Installation
Keithley has a variety of cable and connector accessories
available to accommodate connections from the connector
card to test instrumentation and DUTs (devices under test).
In general, these accessories, which are summarized in
Table 3-2, utilize a custom-built cable assembly for
connections.
Table 3-2
Mass termination accessories
Model
7011-KIT-R
7011-MTR
Description
96-pin female DIN connector and
housing for round cable (provided
with the Model 7036 card).
96-pin male DIN bulkhead connector.
Typical connection technique
All external circuitry, such as instrumentation and DUTs,
that you want to connect to the switch card must be terminated with a single 96-pin female DIN connector. The following connection techniques provide some guidelines and
suggestions for wiring your circuitry.
WARNING
Before beginning any wiring procedures, make sure all power is
off and stored energy in external
circuitry is discharged.
WARNING
When wiring a connector, do not
leave any exposed wires. No conductive part of the circuit may be
exposed. Properly cover the conductive parts, or death by electric shock may occur.
3-4
CAUTION
The 7011-MTC-2 cable is not
intended to be used with the
Model 7036. Pins 1 and 33 in the
cable are internally shorted, but
the Model 7036 uses these pins
for signaling. Using the 7011MTC-2 cable with the Model 7036
will short out the system and
cause equipment damage.
NOTE
It is recommended that external circuitry be connected (plugged in) after
the Model 7036 is installed in the Model
7001/7002 mainframe. Installation is
covered at the end of this section.
In Figure 3-2, connections are accomplished using a custombuilt cable assembly that consists of a Model 7011-KIT-R
connector and a suitable round cable. Hitachi part number
N2807-P/D-50TAB is a round, 50-conductor cable. Two
cables can be used to provide 100 conductors. The connector
has solder cups to accommodate the individual wires of the
unterminated cable. Figure 3-3 provides an exploded view of
the connector assembly and shows how the cable is connected. For further Model 7011-KIT-R assembly information, refer to the packing list provided with the kit. The
connector end of the resultant cable assembly mates directly
to the multi-pin connector card. The unterminated end of the
cable assembly is wired directly to instrumentation and
DUT.
Card Connections and Installation
Wire directly to
instrumentation
and DUT
Multi-Pin
Connector
Card
Cable
7011-Kit-R
Connector Kit
Notes : Figure 3-3 provides an exploded view showing
how the connector (with cable) is assembled.
Cable Hitachi p/n N2807-P/D-50TAB is a
50-conductor round cable. Two of these
cables can be used to supply 100 conductors.
Figure 3-2
Typical cable connection technique
Figure 3-3
Model 7011-KIT-R (cable) assembly
3-5
Card Connections and Installation
Typical connection scheme
This paragraph shows how the Model 7036 could be
connected to a system that activates external devices and
circuits.
Figure 3-4 shows how external connections can be made to
the system using a custom-built cable that is unterminated at
one end. The unterminated end of the cable can be hardwired directly to the external devices and power supplies.
The other end will mate to the Model 7036 switch card. Connection details are provided in the Multi-pin (mass termination) connections paragraph.
If adding more Model 7036 cards to a system, simply wire
them in the same manner as the first. Remember that
Model 7036 cards installed in the same mainframe are electrically isolated from each other.
7036
Indicator
Lamp
Alarm
Custom-built cable
terminated with
7011-KIT-R
Relay
5V
12V
30V
7036
5V
IN 1
OUT 1
IN 21
OUT 21
IN 2
OUT 2
IN 22
OUT 22
Alarm
12V
30V
IN 3
OUT 3
IN 23
OUT 23
Relay
Equivalent Circuit
Figure 3-4
Typical connection scheme for Model 7036
3-6
Indicator
Lamp
Card Connections and Installation
Model 7036 installation and removal
The following paragraphs explain how to install and remove
the Model 7036 switch card from the Model 7001/7002
mainframe.
WARNING
Installation or removal of the
Model 7036 is to be performed by
qualified service personnel. Failure to recognize and observe
standard
safety
precautions
could result in personal injury or
death.
CAUTION
To prevent contamination to the
switch card that could degrade
performance, only handle the
card by the edges and shields.
stored energy in external circuitry is discharged.
1. Mate the connector card to the relay card if they are separated. Install the supplied 4-40 screw to secure the
assembly. Make sure to handle the cards by the edges
and shields to prevent contamination.
2. Facing the rear panel of the Model 7001/7002, select the
slot that you wish to install the card in.
3. Referring to Figure 3-5, feed the switch card into the
desired slot so the edges of the relay card ride in the
rails.
4. With the ejector arms in the unlocked position, push the
switch card all the way into the mainframe until the arms
engage into the ejector cups. Then push both arms
inward to lock the switch card into the mainframe.
WARNING
To avoid electric shock that could
result in injury or death, make
sure to properly install and tighten the safety ground screw shown
in Figure 3-5.
Switch card installation
Perform the following steps to install the switch card in the
Model 7001/7002 mainframe:
5. Install the screw shown in Figure 3-5.
WARNING
Switch card removal
Turn off power from all instrumentation (including the Model
7001/7002 mainframe) and disconnect their line cords. Make
sure all power is removed and any
Screw
Unlock card
To remove the switch card, first unloosen the safety ground
screw, unlock the card by pulling the latches outward, and
pull the card out of the mainframe. Remember to handle the
Ejector
Arms (2)
Screw
Lock card
Figure 3-5
Model 7036 card installation in Model 7001
3-7
4
Operation
Introduction
Maximum signal levels
The information in this section is formatted as follows:
To prevent overheating or damage to the relays, never exceed
the following maximum signal levels: 60VDC, 30V rms,
42V peak between any two inputs or chassis, 1A switched,
30VA (resistive load).
• Power limits  Summarizes the maximum power
limits of the Model 7036 switch card.
• Mainframe control of relay card
 Summarizes programming steps to control the relay card from
the Model 7001/7002 Switch System mainframe.
• Measurement considerations
 Reviews a
number of considerations when using the Model 7036
to make measurements.
Reactive loads
Operation is specified for resistive loads. Reactive loads
require voltage clamping (for inductive loads) and current
surge limiting (for capacitive loads) to prevent damage to the
relays and to external circuitry.
Power limits
CAUTION
To prevent damage to the card,
do not exceed the maximum signal level specifications of the
card. For reactive loads, be sure
to use voltage clamping and current limiting as explained in the
Reactive loads paragraph.
4-1
Operation
Inductive loads
 Inductive reaction voltage must be
limited to less than 60V in DC circuits or 30V rms, 42V peak
in AC circuits. Also consider the load when determining the
voltage limit. Clamping circuits that can be used are shown
in Figure 4-1.
Capacitive loads
 The initial surge current from a
capacitive reactive load must be limited. Figure 4-2 shows
circuits that can be used to limit current surges. To protect the
relay, limit current to 1A. Also consider the load when determining the current surge limit.
IN 1
R
Load
OUT 2
IN 2
V
A. Resistor Limited R = I Limit
7036
IN 1
OUT 1
1A
FUSE
Thermistor*
(Rs)
Load
OUT 2
* High resistance when cold.
OUT 1
1A
FUSE
R
Load
OUT 2
IN 2
OUT 1
1A
FUSE
IN 2
7036
7036
IN 1
Low resistance when hot.
Fast thermal recovery.
V
B. Thermistor Limited Rs = I Limit
A. Resistor Clamped (AC or DC Voltages)
7036
IN 1
Figure 4-2
Limiting capacitive reaction current
+
OUT 1
1A
FUSE
D
Load
Mainframe control of relay card
OUT 2
IN 2
The following information pertains to the Model 7036 relay
card. It assumes that you are familiar with the operation of
the Model 7001/7002 mainframe.
B. Diode Clamped (DC Voltages)
7036
IN 1
OUT 1
1A
FUSE
Diode
Zener
Diode
Load
OUT 2
IN 2
Zener
Diode
Diode
C. Zener Clamped (AC Voltages)
7036
IN 1
OUT 1
1A
FUSE
IN 2
OUT 2
C
R
D. Resistor-Capacitor Clamped (AC Voltages)
Figure 4-1
Limiting inductive reaction voltage
4-2
Load
If you are not familiar with the operation of the mainframe,
it is recommended that you proceed to Getting Started (Section 3) in the Model 7001 or Model 7002 Instruction Manual
after reading the following information.
Operation
7001 Display
CARD 1
1
2
3
4
5
CARD 2
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
= Open Channel
= Closed Channel
Figure 4-3
Model 7001 channel status display (two cards installed)
Channel assignments
The Model 7001 has a channel status display (Figure 4-3)
that provides the real-time state of each available channel.
The left portion of the display is for slot 1 (card 1), and the
right portion is for slot 2 (card 2). With two Model 7036
cards installed in the mainframe, the 40 channels of each
card will be displayed as shown in Figure 4-3. For the Model
7002, channel status LED grids are used for the ten slots. The
LED grid for slot 1 is shown in Figure 4-4.
7002 LED DISPLAY
SLOT 1
ROW
1
1
2
3
4
COLUMN
5 6 7
8
9 10
2
3
4
= OPEN CHANNEL
= CLOSED CHANNEL
Figure 4-4
Model 7002 channel status display (slot 1)
4-3
Operation
Relay organization of the channel status display for each slot
is shown in Figure 4-5. The relay card contains 40 channels
as shown in the illustration.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
To control the relay card from the mainframe, each relay
must have a unique channel assignment, which includes the
slot number that the card is installed in. The channel assignments for the relay card are provided in Figure 4-6. Each
channel assignment is made up of the slot designator (1 or 2)
and the relay card channel. For the Model 7002, the slot designator can be from 1 to 10 since there are ten slots. To be
consistent with Model 7001/7002 operation, the slot designator and relay card channel are separated by an exclamation
point (!). Some examples of CHANNEL assignments are as
follows:
CHANNEL 1!1 = Slot 1, Channel 1
CHANNEL 1!20 = Slot 1, Channel 20
CHANNEL 2!2 = Slot 2, Channel 2
CHANNEL 2!6 = Slot 2, Channel 6
Figure 4-5
Display organization for relay card channels
These channels are displayed and controlled from the normal
display state of the mainframe. If currently in the menu
structure, return to the normal display state by pressing
EXIT.
A. Slot 1
(Card 1)
B. Slot 2
(Card 2)
1
2
3
4
5
6
7
8
9
10
1!1
1!2
1!3
1!4
1!5
1!6
1!7
1!8
1!9
1!10
1!11
1!12
1!13
1!14
1!15
1!16
1!17
1!18
1!19
1!20
1!21
1!22
1!23
1!24
1!25
1!26
1!27
1!28
1!29
1!30
1!31
1!32
1!33
1!34
1!35
1!36
1!37
1!38
1!39
1!40
1
2
3
4
5
6
7
8
9
10
2!1
2!2
2!3
2!4
2!5
2!6
2!7
2!8
2!9
2!10
2!11
2!12
2!13
2!14
2!15
2!16
2!17
2!18
2!19
2!20
2!21
2!22
2!23
2!24
2!25
2!26
2!27
2!28
2!29
2!30
2!31
2!32
2!33
2!34
2!35
2!36
2!37
2!38
2!39
2!40
Examples:
Figure 4-6
Channel assignments
4-4
1!18 = Slot 1, Channel 18
2!36 = Slot 2, Channel 36
Operation
Scanning channels
Front panel control
NOTE
For the Model 7002, you can use the light
pen to open and close channels.
Closing and opening channels
A channel is closed from the front panel by simply keying in
the channel assignment and then pressing CLOSE. For
example, to close channel 16 of a relay card installed in slot
2, key in the following channel list and press CLOSE:
SELECT CHANNELS 2!16
The above closed channel can be opened by pressing OPEN
or OPEN ALL. The OPEN key opens only the channels specified in the channel list, and OPEN ALL opens all channels.
The following display is an example of a channel list that
consists of several channels:
SELECT CHANNELS 2!1, 2!3, 2!12-2!15
Channels are scanned by creating a scan list and configurin
the Model 7001/7002 to perform a scan. The scan list is created in the same manner as a channel list (see Closing and
opening channels). However, the scan list is specified from
the SCAN CHANNELS display mode. (The SCAN LIST
key toggles between the channel list and the scan list.) The
following shows an example of a scan list:
SCAN CHANNELS 2!1, 2!3, 2!11-2!15
When a scan is performed, the channels specified in the scan
list will be scanned in the order that they are presented in the
scan list.
A manual scan can be performed using the RESET default
conditions of the Model 7001/7002. RESET is selected from
the SAVESETUP menu of the main MENU. When RESET
is performed, the mainframe is configured for an infinit
number of manual scans. The first press of STEP takes the
mainframe out of the idle state. The next press of STEP will
close the first channel specified in the scan list. Each subsequent press of STEP will select the next channel in the scan
list.
Notice that channel entries are separated by commas (,). A
comma is inserted by pressing ENTER or the right cursor
key (' ). The channel range is specified by using the hyphen
(-) key to separate the range limits. Pressing CLOSE will
close all the channels specified in the channel list. Pressing
OPEN (or OPEN ALL) will open the channels.
Channel patterns can also be used in a channel list. This
allows you to control specific bit patterns for logic circuits.
Example:
SELECT CHANNELS 2!1, M1
Pressing CLOSE will turn on channel 2!1 and the channels
that make up channel pattern M1. Refer to the mainframe
instruction manual for information on defining channel
patterns.
4-5
Operation
IEEE-488 bus operation
Bus operation is demonstrated using Microsoft QuickBASIC
4.5, the Keithley KPC-488.2 (or Capital Equipment Corporation) IEEE interface, and the HP-style Universal Language
Driver (CECHP). Refer to “QuickBASIC 4.5 Programming”
in the mainframe manual for details on installing the Universal Language Driver, opening driver files, and setting the
input terminal. Program statements assume that the primary
address of the mainframe is 07.
Closing and opening channels
The following SCPI commands are used to close and open
channels:
:CLOSe <list>
:OPEN <list>|ALL
Closes specified channels
Opens specified (or all) channels.
The following program statement closes channels 1!1, 1!4
through 1!6, and the channels that make up channel pattern
M1.
PRINT #1, "output 07; clos (@ 1!1, 1!4:1!6,
M1)"
Notice that the colon (:) is used to separate the range limits.
Either of the following statements opens channels 1!1, 1!4
through 1!6, and the channels of M1:
PRINT #1, "output 07; open (@ 1!1, 1!4:1!6,
M1)"
PRINT #1, "output 07; open all"
Scanning channels
There are many commands associated with scanning. However, it is possible to configure a scan using as little as four
commands. These commands are listed as follows:
*RST
:TRIGger:COUNt:AUTo ON
:ROUTe:SCAN <list>
:INIT
4-6
The first command resets the mainframe to a default scan
configuration. The second command automatically sets the
channel count to the number of channels in the scan list, the
third command defines the scan list, and the fourth command
takes the Model 7001/7002 out of the idle state.
The following program fragment will perform a single scan
of channels 1 through 4 of slot 1 and the channels that make
up channel pattern M1:
PRINT
PRINT
PRINT
PRINT
#1,
#1,
#1,
#1,
"output
"output
"output
"output
07;
07;
07;
07;
*rst"
trig:coun:auto on"
scan (@ 1!1:1!4, M1)"
init"
The first statement selects the *RST default configuration for
the scan. The second statement sets channel count to the
scan-list-length (5). The third statement defines the scan list,
and the last statement takes the mainframe out of the idle
state. The scan is configured to start as soon as the :INIT
command is executed.
When the previous program fragment is run, the scan will be
completed in approximately 240msec (3msec delay for
channel closures and 3msec delay for each open), which is
too fast to view from the front panel. An additional relay
delay can be added to the program to slow down the scan for
viewing. The program is modified by adding a statement to
slow down the scan. Also, a statement is added to the beginning of the program to ensure that all channels are open
before the scan is started. The two additional statements are
indicated in bold typeface.
PRINT
PRINT
PRINT
PRINT
PRINT
PRINT
#1,
#1,
#1,
#1,
#1,
#1,
"output
"output
"output
"output
"output
"output
07;
07;
07;
07;
07;
07;
open all"
*rst"
trig:coun:auto on"
trig:del 0.5"
scan (@ 1!1:1!4, M1)"
init"
The first statement opens all channels, and the fourth statement sets a 1/2 second delay after each channel closes.
Operation
Measurement considerations
R DUT
Many measurements made with the Model 7036 are subject
to various effects that can seriously affect low-level measurement accuracy. The following paragraphs discuss these
effects and ways to minimize them.
E DUT
R PATH
Path isolation
The path isolation is simply the equivalent impedance
between any two test paths in a measurement system. Ideally,
the path isolation should be infinite, but the actual resistance
and distributed capacitance of cables and connectors results
in less than infinite path isolation alues for these devices.
Path isolation resistance forms a signal path that is in parallel
with the equivalent resistance of the DUT, as shown in Figure 4-7. For low-to-medium device resistance values, path
isolation resistance is seldom a consideration; however, it
can seriously degrade measurement accuracy when testing
high-impedance devices. The voltage measured across such
a device, for example, can be substantially attenuated by the
voltage divider action of the device source resistance and
path isolation resistance, as shown in Figure 4-8. Also, leakage currents can be generated through these resistances by
voltage sources in the system.
E OUT =
EDUT R PATH
R DUT + R PATH
Figure 4-8
Voltage attenuation by path isolation resistance
Any differential isolation capacitance affects DC measurement settling time as well as AC measurement accuracy.
Thus, it is often important that such capacitance be kept as
low as possible. Although the distributed capacitance of the
switch card is generally fi ed by design, there is one area
where you do have control over the capacitance in your system: the connecting cables. To minimize capacitance, keep
all cables as short as possible.
Magnetic fields
R DUT
RPATH
R IN
V
E DUT
DUT
7036
Card
Measure
Instrument
R DUT = Source Resistance of DUT
EDUT = Source EMF of DUT
R PATH = Path Isolation Resistance
R IN
= Input Resistance of Measuring Instrument
Figure 4-7
Path isolation resistance
When a conductor cuts through magnetic lines of force, a
very small current is generated. This phenomenon will frequently cause unwanted signals to occur in the test leads of a
relay switching system. If the conductor has sufficien
length, even weak magnetic fields like those of the earth can
create sufficient signals to a fect low-level measurements.
Two ways to reduce these effects are: (1) reduce the lengths
of the test leads, and (2) minimize the exposed circuit area.
In extreme cases, magnetic shielding may be required. Special metal with high permeability at low flux densities (such
as mu metal) is effective at reducing these effects.
Even when the conductor is stationary, magnetically induced
signals may still be a problem. Fields can be produced by
various signals such as the AC power line voltage. Large
inductors such as power transformers can generate substantial magnetic fields, so care must be taken to keep the switching and measuring circuits a good distance away from these
potential noise sources.
4-7
Operation
At high current levels, even a single conductor can generate
significant fields. These effects can be minimized by using
twisted pairs, which will cancel out most of the resulting
fields
Radio frequency interference
Radio Frequency Interference (RFI) is a general term used to
describe electromagnetic interference over a wide range of
frequencies across the spectrum. Such RFI can be particularly troublesome at low signal levels, but it can also affect
measurements at high levels if the problem is of sufficien
severity.
RFI can be caused by steady-state sources such as radio or
TV signals or some types of electronic equipment (microprocessors, high speed digital circuits, etc.), or it can result from
impulse sources, as in the case of arcing in high-voltage environments. In either case, the effect on the measurement can
be considerable if enough of the unwanted signal is present.
RFI can be minimized in several ways. The most obvious
method is to keep the equipment and signal leads as far away
from the RFI source as possible. Shielding the Model 7036
switch card, signal leads, sources, and measuring instruments will often reduce RFI to an acceptable level. In
extreme cases, a specially constructed screen room may be
required to sufficiently attenuate the troublesome signal
shown in Figure 4-9, the resulting ground loop causes current to fl w through the instrument LO signal leads and then
back through power line ground. This circulating current
develops a small, but undesirable, voltage between the LO
terminals of the two instruments. This voltage will be added
to the source voltage, affecting the accuracy of the measurement.
Figure 4-10 shows how to connect several instruments together to eliminate this type of ground loop problem. Here,
only one instrument is connected to power line ground.
Signal Leads
Instrument 1
Instrument 2
Instrument 3
Ground Loop
Current
Power Line Ground
Figure 4-9
Power line ground loops
Instrument 1
Instrument 2
Instrument 3
Many instruments incorporate internal filtering that may
help to reduce RFI effects in some situations. In some cases,
additional external filtering may also be required. Keep in
mind, however, that filtering may have detrimental effects on
the desired signal.
Power Line Ground
Ground loops
When two or more instruments are connected together, care
must be taken to avoid unwanted signals caused by ground
loops. Ground loops usually occur when sensitive instrumentation is connected to other instrumentation with more
than one signal return path such as power line ground. As
4-8
Figure 4-10
Eliminating ground loops
Operation
Ground loops are not normally a problem with instruments
having isolated LO terminals. However, all instruments in
the test setup may not be designed in this manner. When in
doubt, consult the manual for all instrumentation in the test
setup.
Keeping connectors clean
As is the case with any high-resistance device, the integrity
of connectors can be damaged if they are not handled properly. If connector insulation becomes contaminated, the insulation resistance will be substantially reduced, affecting
high-impedance measurement paths.
Oils and salts from the skin can contaminate connector insulators, reducing their resistance. Also, contaminants present
in the air can be deposited on the insulator surface. To avoid
these problems, never touch the connector insulating material. In addition, the Model 7036 card should be used only in
clean, dry environments to avoid contamination.
If the connector insulators should become contaminated,
either by inadvertent touching or from airborne deposits,
they can be cleaned with a cotton swab dipped in clean methanol. After thorough cleaning, they should be allowed to dry
for several hours in a low-humidity environment before use,
or they can be dried more quickly using dry nitrogen.
AC frequency response
The AC frequency response of the Model 7036 is important
in test systems that switch AC signals. Refer to the specif cations at the front of this manual.
4-9
5
Service Information
WARNING
The information in this section is
intended only for qualified service personnel. Some of the procedures may
expose you to hazardous voltages that
could result in personal injury or death.
Do not attempt to perform these procedures unless you are qualified to do so.
Introduction
This section contains information necessary to service the
Model 7036 switch card and is arranged as follows:
• Handling and cleaning precautions  Discusses handling procedures and cleaning methods for the switch
card.
• Performance verificatio  Covers the procedures
necessary to determine if the card is operating properly.
• Special handling of static-sensitive devices  Reviews precautions necessary when handling static-sensitive devices.
• Principles of operation  Briefly discusses circuit operation.
• Troubleshooting  Presents some troubleshooting
tips for the switch card.
Handling and cleaning precautions
Because of the high impedance circuits on the Model 7036,
care should be taken when handling or servicing the card to
prevent possible contamination that could degrade performance. The following precautions should be taken when
handling the switch card.
Do not store or operate the card in an environment where
dust could settle on the circuit board. Use dry nitrogen gas to
clean dust off the card if necessary.
Handle the card only by the side edges and shields. Do not
touch any board surfaces, components, or connectors. Do not
touch areas adjacent to electrical contacts. When servicing
the card, wear clean cotton gloves.
If making solder repairs on the circuit board, use an
OA-based (organic activated) flux. Remove the flux from
these areas when the repair is complete. Use pure water
along with plenty of clean cotton swabs to remove the flux
Take care not to spread the flux to other areas of the circuit
board. Once the flux has been removed, swab only the
repaired area with methanol, then blowdry the board with
dry nitrogen gas.
After cleaning, the card should be placed in a 50°C low
humidity environment for several hours.
5-1
Service Information
Performance verification
Environmental conditions
The following paragraphs discuss performance verificatio
procedures for the Model 7036, including channel resistance, offset current, contact potential, and isolation.
All verification measurements should be made at an ambient
temperature between 18° and 28°C, and at a relative humidity of less than 70%.
CAUTION
Contamination will degrade the performance of the switch card. To avoid contamination, always grasp the card by
the side edges and shields. Do not touch
the connectors, and do not touch the
board surfaces or components. On
plugs and receptacles, do not touch
areas adjacent to the electrical contacts.
Recommended equipment
Table 5-1 summarizes the equipment necessary for performance verification, along with an application for each unit.
Switch card connections
The following information summarizes methods that can be
used to connect test instrumentation to the connector card.
Detailed connection information is provided in Section 3.
NOTE
Failure of any performance verification
test may indicate that the switch card is
contaminated. See the Handling and
cleaning precautions paragraph to clean
the card.
Table 5-1
Verification equipmen
Description
Model
Specification
Applications
DMM
Keithley Model 2000
100Ω; 0.01%
Path resistance
Electrometer w/voltage source
Keithley Model 6517A
20pA, 200pA; 1%
100V source; 0.15%
Offset current, path isolation
Sensitive Digital Voltmeter
Keithley Model 182
3mV; 60ppm
Contact potential
Triax cable (unterminated)
Keithley Model 7025

Offset current
Low thermal cable
(unterminated)
Keithley Model 1484

Contact potential
5-2
Service Information
One method to make instrument connections to the switch
card is to hard-wire a 96-pin female DIN connector and then
mate it to the connector on the Model 7036. Shorting connections can also be done at the connector. The connector in
the Model 7011-KIT-R connection kit (see Table 3-2) can be
used for this purpose. Pin identification for the multi-pin
connector for the relay card is provided by Figure 3-1 and
Table 3-1.
WARNING
When wiring a connector, do not leave
any exposed wires. No conductive part
of the circuit may be exposed. Properly
cover the conductive parts, or death by
electric shock may occur.
CAUTION
After making solder connections to a
connector, remove solder flux as
explained at the beginning of this section. Failure to clean the solder connections could result in degraded
performance, preventing the card from
passing verification tests.
Channel resistance tests
Referring to Figure 5-1, perform the following steps to verify
that each contact of every relay is closing properly and that
the resistance is within specification
1. Turn the Model 7001/7002 off if it is on.
2. Set the Model 2000 to the 100Ω range and connect four
test leads to the INPUT and SENSE Ω 4 WIRE input.
3. Short the four test leads together and zero the Model
2000. Leave zero enabled for the entire test.
4. Connect INPUT HI and SENSE Ω 4 WIRE HI of the
Model 2000 to the input (IN) terminal of Channel 1 as
shown in Figure 5-1.
5. Connect INPUT LO and SENSE Ω 4 WIRE LO to the
output (OUT) terminal of Channel 1.
6. With the card installed in slot 1 (CARD 1) of the mainframe, turn on the Model 7001/7002 and program it to
close channel 1!1 (Slot 1, Channel 1). Verify that the
resistance of this channel is <1Ω.
7. Repeat the basic procedure of steps 1 through 6 to test
the rest of the channels of the Model 7036 relay switch
card. Remember to close the channel that the Model
2000 is connected to.
Before pre-wiring any connector plugs, study the following
test procedures to fully understand the connection
requirements.
Each Channel:
Sense Ω 4 Wire HI
7036
IN
Input HI
HI
LO
POWER
Model 2000
(Measure 4-Wire Ohms)
Input LO
Sense Ω 4 Wire LO
OUT
Path Resistance Test
Figure 5-1
Channel resistance testing
5-3
Service Information
3. Install the switch card in slot 1 (CARD 1) of the
Model 7001/7002 if it is not already installed.
4. On the Model 6517A, select the 200pA range and
enable zero check and zero correct the instrument.
Leave zero correct enabled for the entire procedure.
5. Turn on the Model 7001/7002.
6. Program the Model 7001/7002 to close channel 1!1.
7. On the Model 6517A, disable zero check and verify that
it is <100pA. This measurement is the common-mode
leakage current of the channel.
8. On the Model 6517A, enable zero check.
9. Repeat the basic procedure in steps 1 through 8 to check
the other channels. Remember to close the channel that
the electrometer is connected to.
Offset current tests
These tests check leakage current from input (IN) and output
(OUT) to chassis (common-mode) for each channel. In general, these tests are performed by simply measuring the leakage current with an electrometer. In the following procedure,
the Model 6517A is used to measure leakage current.
Referring to Figure 5-2, perform the following procedure to
check offset current:
1. Turn off the Model 7001/7002 if it is on.
2. Connect the Model 6517A electrometer to channel 1 as
shown in Figure 5-2. Note that electrometer HI is connected to input (IN) of channel 1. Electrometer LO is
connected to chassis ground, which is accessible at the
rear panel of the mainframe.
Model 7025
Unterminated
Each Channel:
WARNING:NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
90-110V
105-125V
7036
180-220V
210-250V
HI
115V
!
IN
LO
!
CAUTION:FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
Model 6517A
(Measure Current)
Chassis ground can be
accessed at the rear
panel of the 7001/7002
Figure 5-2
Offset current testing
5-4
OUT
Service Information
Contact potential tests
These tests check the EMF generated by each relay contact
for each channel. The tests simply consist of using a sensitive
DVM (Model 182) to measure the contact potential.
Perform the following procedure to check contact potential
of each path:
1. Turn off the Model 7001/7002 if it is on.
2. Set the Model 182 to the 3mV range, short the input
leads, and press REL READING to null out internal offset. Leave REL enabled for the entire procedure.
3. Connect the Model 182 to channel 1 as shown in Figure
5-3.
4. Install the switch card in slot 1 (CARD 1) of the
Model 7001/7002 if it is not already installed.
5. Turn on the Model 7001/7002.
6. Program the Model 7001/7002 to close channel 1!1.
7. Verify that the reading on the Model 182 is <4µV. This
measurement is the contact potential of the channel.
8. Repeat the basic procedure in steps 1 through 7 to test
the rest of the channels of the Model 7036.
Channel to channel isolation tests
These tests check the leakage resistance (isolation) between
adjacent channels. A channel is simply the circuit from the
input (IN) to the output (OUT) that results by closing the
channel relay.
In general, the test is performed by applying a voltage
(+42V) across two adjacent channels and then measuring the
leakage current across the channels. The isolation resistance
is then calculated as R = V/I. In the following procedure, the
Model 6517A functions as both a voltage source and an
ammeter. In the R function, the Model 6517A internally calculates the resistance from the known voltage and current
levels and displays the resistance value.
Model 1484
Low Thermal Cable
(Unterminated)
KEITHLEY
182 SENSITIVE DIGITAL VOLTMETER
TRG
SRQ
REM
TALK
LSTN
Each channel:
HI
7036
IN
LO
Model 182
OUT
Figure 5-3
Contact potential testing
5-5
Service Information
Model 7025
Unterminated
Triax Cable
Banana to
Banana Cable
Ground Link
Removed
Each Adjacent Channel Pair:
WARNING:NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
90-110V
105-125V
7036
HI
115V
!
180-220V
210-250V
IN
(Red
!
CAUTION:FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
Model 6517A
HI
Source V and
Measure V/I
OUT
IN
Unterminated
Banana Cables
OUT
Figure 5-4
Channel to channel testing
Refer to Figure 5-4 and perform the following steps to test
channel to channel isolation:
1. Turn off the Model 7001/7002 if it is on.
2. Connect the Model 6517A to channels 1 and 2 as shown
in Figure 5-4. Make sure the voltage source is off.
3. Install the Model 7036 in slot 1 (CARD 1) of the
Model 7001/7002 if it is not already installed.
4. On the Model 6517A, select the ohms function and
choose the 2GΩ range.
5. On the Model 6517A, set the voltage source for +42V.
Make sure the voltage source is off.
6. Place the Model 6517A in the R measurement function.
7. Turn on the Model 7001/7002, and program it to close
channels 1!1 and 1!2 (channels 1 and 2).
8. On the Model 6517A, turn on the output of the voltage
source.
9. After allowing the reading on the Model 6517A to settle,
verify that it is >1GΩ. This measurement is the channel
to channel leakage resistance (isolation) between channels 1 and 2.
5-6
10. Turn off the Model 6517A voltage source.
11. Turn off the Model 7001/7002.
12. Disconnect the Model 6517A from channels 1 and 2,
and, in a similar manner, reconnect it to channels 2 and
3 (electrometer high to channel 2, and voltage source
high to channel 3).
13. Install the card in slot 1 (CARD 1) of the
Model 7001/7002 if it is not already installed.
14. Turn on the Model 7001/7002 and program it to close
channels 1!2 and 1!3.
15. On the Model 6517A, turn on the voltage source.
16. After allowing the reading on the Model 6517A to settle,
verify that it is >1GΩ. This is the isolation between
channels 2 and 3.
17. Using Table 5-2 as a guide, repeat the basic procedure of
steps 11 through 16 for the rest of the path pairs (starting
with test 3).
Service Information
Table 5-2
Channel to channel isolation tests
Test no.
Isolation test
Test equipment location
Channels closed
1
2
3
Channel 1 to Channel 2
Channel 2 to Channel 3
Channel 3 to Channel 4
Channels 1 and 2
Channels 2 and 3
Channels 3 and 4
1!1 and 1!2
1!2 and 1!3
1!3 and 1!4
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
Channel 4 to Channel 5
Channel 5 to Channel 6
Channel 6 to Channel 7
Channel 7 to Channel 8
Channel 8 to Channel 9
Channel 9 to Channel 10
Channel 10 to Channel 11
Channel 11 to Channel 12
Channel 12 to Channel 13
Channel 13 to Channel 14
Channel 14 to Channel 15
Channel 15 to Channel 16
Channel 16 to Channel 17
Channel 17 to Channel 18
Channel 18 to Channel 19
Channel 19 to Channel 20
Channel 20 to Channel 21
Channel 21 to Channel 22
Channel 22 to Channel 23
Channel 23 to Channel 24
Channel 24 to Channel 25
Channel 25 to Channel 26
Channel 26 to Channel 27
Channel 27 to Channel 28
Channel 28 to Channel 29
Channel 29 to Channel 30
Channel 30 to Channel 31
Channel 31 to Channel 32
Channel 32 to Channel 33
Channel 33 to Channel 34
Channel 34 to Channel 35
Channel 35 to Channel 36
Channel 36 to Channel 37
Channel 37 to Channel 38
Channel 38 to Channel 39
Channel 39 to Channel 40
Channels 4 and 5
Channels 5 and 6
Channels 6 and 7
Channels 7 and 8
Channels 8 and 9
Channels 9 and 10
Channels 10 and 11
Channels 11 and 12
Channels 12 and 13
Channels 13 and 14
Channels 14 and 15
Channels 15 and 16
Channels 16 and 17
Channels 17 and 18
Channels 18 and 19
Channels 19 and 20
Channels 20 and 21
Channels 21 and 22
Channels 22 and 23
Channels 23 and 24
Channels 24 and 25
Channels 25 and 26
Channels 26 and 27
Channels 27 and 28
Channels 28 and 29
Channels 29 and 30
Channels 30 and 31
Channels 31 and 32
Channels 32 and 33
Channels 33 and 34
Channels 34 and 35
Channels 35 and 36
Channels 36 and 37
Channels 37 and 38
Channels 38 and 39
Channels 39 and 40
1!4 and 1!5
1!5 and 1!6
1!6 and 1!7
1!7 and 1!8
1!8 and 1!9
1!9 and 1!10
1!10 and 1!11
1!11 and 1!12
1!12 and 1!13
1!13 and 1!14
1!14 and 1!15
1!15 and 1!16
1!16 and 1!17
1!17 and 1!18
1!18 and 1!19
1!19 and 1!20
1!20 and 1!21
1!21 and 1!22
1!22 and 1!23
1!23 and 1!24
1!24 and 1!25
1!25 and 1!26
1!26 and 1!27
1!27 and 1!28
1!28 and 1!29
1!29 and 1!30
1!30 and 1!31
1!31 and 1!32
1!32 and 1!33
1!33 and 1!34
1!34 and 1!35
1!35 and 1!36
1!36 and 1!37
1!37 and 1!38
1!38 and 1!39
1!39 and 1!40
5-7
Service Information
Common-mode isolation tests
These tests check the common-mode isolation (leakage
resistance) between the input (IN) and chassis ground of
every channel.
In general, the test is performed by applying a voltage (42V)
and then measuring the leakage current. The isolation resistance is then calculated as R = V/I. In the following procedure, the Model 6517A functions as a voltage source and an
ammeter. In the R function, the Model 6517A internally calculates the resistance from the known voltage and current
levels and displays the resistance value.
Refer to Figure 5-5 and perform the following steps to test
common-mode isolation.
1. Turn off the Model 7001/7002 if it is on.
2. Connect the Model 6517A to channel 1 as shown in
Figure 5-5. Make sure the voltage source is off. Note
that the voltage source HI is connected to the input (IN).
Electrometer HI can be connected to chassis ground at
the rear panel of the Model 7001/7002.
3. Install the Model 7036 in slot 1 (CARD 1) of the
Model 7001/7002 if it is not already installed.
4. On the Model 6517A, select the ohms function and
choose the 2GΩ range.
5. On the Model 6517A, set the voltage source for +42V.
Make sure the voltage source is still off.
6. Place the Model 6517A in the R measurement function.
7. Turn on the Model 7001/7002 and program the mainframe to close channel 1!1 (slot 1, channel 1).
8. On the Model 6517A, turn on the voltage source.
9. After allowing the reading on the Model 6517A to settle,
verify that it is >1GΩ. This measurement checks the
common-mode isolation of channel 1.
10. Turn off the Model 6517A voltage source.
11. Repeat the basic procedure in steps 1 through 10 to
check differential isolation of the other Model 7036
channels. Remember to close the relay of the channel
being checked.
12. Turn off the Model 6517A voltage source and the Model
7001/7002.
Model 7025
Unterminated
Triax Cable
Banana to
Banana Cable
Ground Link
Removed
Chassis ground
is accessible at
7001/7002
rear panel
WARNING:NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
90-110V
105-125V
Each channel:
7036
HI
180-220V
210-250V
115V
!
(Red)
IN
!
HI
CAUTION:FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
Model 6517A
Source V and
Measure V/I
HI
Unterminated
Banana Cables
OUT
Figure 5-5
Common-mode isolation testing
5-8
Service Information
Special handling of static-sensitive
devices
CMOS and other high-impedance devices are subject to possible static discharge damage because of the high-impedance
levels involved. The following precautions pertain specif cally to static-sensitive devices. However, since many
devices in the Model 7036 are static-sensitive, it is recommended that they all be treated as static-sensitive.
1. Such devices should be transported and handled only in
containers specially designed to prevent or dissipate
static buildup. Typically, these devices will be received
in anti-static containers made of plastic or foam. Keep
these parts in their original containers until ready for
installation.
2. Remove the devices from their protective containers
only at a properly grounded work station. Also, ground
yourself with a suitable wrist strap while working with
these devices.
3. Handle the devices only by the body; do not touch the
pins.
CLK
Data
To Mainframe
Strobe
Enable
Relay
Drivers
4. Any printed circuit board into which the device is to be
inserted must f rst be grounded to the bench or table.
5. Use only anti-static type de-soldering tools and
grounded-tip soldering irons.
Principles of operation
The paragraphs below discuss the basic operating principles
for the Model 7036 and can be used as an aid in troubleshooting the switch card. The schematic drawings of the switch
card are shown on drawing numbers 7036-106 and 7036-176
located at the end of Section 6.
Block diagram
Figure 5-6 shows a simplif ed block diagram of the
Model 7036. Key elements include the relay drivers and
relays, as well as the ROM, which contains card ID and conf guration information. These various elements are discussed
in the following paragraphs.
Relays
User connections
U101U105
+3.5V (Steady State)
+5.7 (≈ 100 msec during
relay actuation)
ID CLK
To Mainframe
ROM
ID DATA
U107
Relay
Power
Control
Q101, Q102
U106, U108
+6V, +15V
Figure 5-6
Model 7036 block diagram
5-9
Service Information
ID data circuits
Upon power-up, card identif cation information from each
card is read by the mainframe. This ID data includes such
information as card ID, hardware settling time, and relay
conf guration information.
ID data is contained within an on-card EEPROM (U107). In
order to read this information, the sequence described below
is performed on power-up.
1. The IDDATA line (pin 5 of U107) is set from high to low
while the IDCLK line (pin 6 of U107) is held high. This
action initiates a start command to the ROM to transmit
data serially to the mainframe (Figure 5-7).
ID CLK
ID DATA
Start Bit
4. Once all data is received, the mainframe sends a stop
command, which is a low-to-high transition of the
IDDATA line with the IDCLK line held high
(Figure 5-7).
Relay control
Card relays are controlled by serial data transmitted via the
relay DATA line. A total of f ve bytes for each card are
shifted in serial fashion into latches located in the card relay
driver ICs. The serial data is clocked in by the CLK line. As
data overf ows one register, it is fed out the Q’s line of the
register down the chain.
Once all f ve bytes have shifted into the card, the STROBE
line is set high to latch the relay information into the Q outputs of the relay drivers, and the appropriate relays are energized (assuming the driver outputs are enabled, as discussed
below). Note that a relay driver output goes low to energize
the corresponding relay.
Relay power control
Stop Bit
A relay power control circuit, made up of Q101, Q102,
U106, U108, and associated components, keeps power dissipated in relay coils at a minimum, thus reducing possible
problems caused by thermal EMFs.
Figure 5-7
Start and stop sequences
2. The mainframe sends the ROM address location to be
read over the IDDATA line. The ROM then transmits an
acknowledge signal back to the mainframe, and it then
transmits data at that location back to the mainframe
(Figure 5-8).
3. The mainframe then transmits an acknowledge signal,
indicating that it requires more data. The ROM will then
sequentially transmit data after each acknowledge signal it receives.
During steady-state operation, the relay supply voltage, +V,
is regulated to +3.5V to minimize coil power dissipation.
When a relay is f rst closed, the STROBE pulse applied to
U106 changes the parameters of the relay supply voltage regulator, Q101, allowing the relay supply voltage, +V, to rise to
+5.7V for about 100msec. This brief voltage rise ensures that
relays close as quickly as possible. After the 100msec period
has elapsed, the relay supply voltage (+V) drops back down
to its nominal steady-state value of +3.5V.
ID CLK
1
8
9
IDDATA
(Data output
from mainframe
or ROM)
IDDATA
(Data output
from mainframe
or ROM)
Start
Acknowledge
Figure 5-8
Transmit and acknowledge sequence
5-10
Service Information
Troubleshooting
Power-on safeguard
NOTE
The power-on safeguard circuit discussed below is actually located on the
digital board in the Model 7001/7002
mainframe.
Troubleshooting equipment
Table 5-3 summarizes recommended equipment for troubleshooting the Model 7036.
Table 5-3
Recommended troubleshooting equipment
A power-on safeguard circuit, made up of U114 (a D-type
f ip-f op) and associated components, ensures that relays do
not randomly energize on power-up and power-down. This
circuit disables all relays (all relays are open) during powerup and power-down periods.
The PRESET line on the D-type f ip-f op is controlled by the
68302 microprocessor, while the CLK line of the D-type
f ip-f op is controlled by a port line on the 68302 processor.
The Q output of the f ip-f op drives each switch card relay
driver IC enable pin (U101-U105, pin 8).
When the 68302 microprocessor is in the reset mode, the
f ip-f op PRESET line is held low, and Q out immediately
goes high, disabling all relays (relay driver IC enable pins are
high, disabling the relays.) After the reset condition elapses
(≈200msec), PRESET goes high while Q out stays high.
When the f rst valid STROBE pulse occurs, a low logic level
is clocked into the D-type f ip-f op, setting Q out low and
enabling all relay drivers simultaneously. Note that Q out
stays low, (enabling relay drivers) until the 68302 processor
goes into a reset condition.
Description
Manufacturer
and model
Application
Multimeter
Keithley 2000
Measure DC voltages
Oscilloscope
TEK 2243
View logic waveforms
Troubleshooting access
In order to gain access to the relay card top surface to measure voltages under actual operation conditions, perform the
following steps:
1.
2.
3.
4.
Disconnect the connector card from the relay card.
Remove the Model 7001/7002 cover.
Install the relay card in the CARD 1 slot location.
Turn on Model 7001/7002 power to measure voltages
(see following paragraph).
5-11
Service Information
CAUTION
Troubleshooting procedure
WARNING
Observe the following precautions when
troubleshooting or repairing the switch
card:
Lethal voltages are present within the
Model 7001/7002 mainframe. Some of
the procedures may expose you to hazardous voltages. Observe standard
safety precautions for dealing with live
circuits. Failure to do so could result in
personal injury or death.
To avoid contamination, which could
degrade card performance, always handle the card only by the handle and side
edges. Do not touch edge connectors,
board surfaces, or components on the
card. Also, do not touch areas adjacent
to electrical contacts on connectors.
Table 5-4 summarizes switch card troubleshooting.
Use care when removing relays from the
PC board to avoid pulling traces away
from the circuit board. Before attempting to remove a relay, use an appropriate de-soldering tool such as a solder
sucker to clear each mounting hole
completely free of solder. Each relay pin
must be free to move in its mounting
hole before removal. Also, make certain
that no burrs are present on the ends of
the relay pins.
Table 5-4
Troubleshooting procedure
Step
Item/component
Required condition
Comments
1
GND test point (C114)
All voltages referenced to digital ground
(GND pad).
2
+6V pad (Q101, pin 2)
+6VDC
Relay voltage.
3
+5V pad (C103)
+5VDC
Logic voltage.
4
+15V pad (R101)
+15VDC
Relay bias voltage.
5
+V pad (C114)
+3.5VDC*
Regulated relay voltage.
6
U107, pin 6
ID CLK pulses
During power-up only.
7
U107, pin 5
ID DATA pulses
During power-up only.
8
U101, pin 7
STROBE pulse
End of relay update sequence.
9
U101, pin 2
CLK pulses
During relay update sequence only.
10
U101, pin 3
DATA pulses
During relay update sequence only.
11
U101-U105, pins 10-18
Low with relay energized; high
with relay de-energized.
Relay driver outputs.
*+3.5VDC present at +V pad under steady-state conditions. This voltage rises to +5.7VDC for about 100msec when relay conf guration is changed.
5-12
6
Replaceable Parts
Introduction
Factory service
This section contains replacement parts information, schematic diagrams, and component layout drawings for the
Model 7036.
If the card is to be returned to Keithley Instruments for repair,
perform the following:
Parts lists
Parts lists for the various circuit boards are included in tables
integrated with schematic diagrams and component layout
drawings for the boards. Parts are listed alphabetically in
order of circuit designation.
Ordering information
1. Complete the service form at the back of this manual
and include it with the card.
2. Carefully pack the card in the original packing carton or
the equivalent.
3. Write ATTENTION REPAIR DEPT on the shipping
label.
NOTE
It is not necessary to return the mainframe with the card.
To place an order, or to obtain information concerning
replacement parts, contact your Keithley representative or
the factory (see inside front cover for addresses). When
ordering parts, be sure to include the following information:
1.
2.
3.
4.
5.
Card model number 7036
Card serial number
Part description
Circuit description, if applicable
Keithley part number
6-1
Replaceable Parts
Component layouts and schematic
diagrams
Component layout drawings and schematic diagrams are
included on the following pages integrated with the parts
lists:
Table 6-1  Parts List, Relay Card for Model 7036.
7036-100  Component Layout, Relay Card for
Model 7036.
7036-106  Schematic, Relay Card for Model 7036.
6-2
Table 6-2  Parts List, Mass-Terminated Connector Card
for Model 7036.
7035-170  Component Layout, Mass-Terminated
Connector Card for Model 7036.
7036-176  Schematic, Mass-Terminated Connector Card
for Model 7036.
Table 6-3  Parts List, Model 7011-KIT-R 96-pin Female
DIN Connector Kit.
Replaceable Parts
Table 6-1
Relay card for Model 7036, parts list
Circuit
designation
Keithley
part no.
2-56X3/16PPH
C101-107, 112,
114,116,123,125
C108,113,115
C109,111
C110
C122,124
Description
2-56X3/16 PHILLIPS PAN HEAD SCREW (RELAY BOARD
TO SHIELD)
2-56X5/8 PHILLIPS PAN HEAD FASTENER
2-56X5/8 PHILLIPS PAN HEAD SCREW
2-56X5/16 PHILLIPS PAN HEAD SEMS SCREW (CONNECTOR TO SHIELD)
4-40X3/16 PHILLIPS PAN HEAD SEMS SCREW
4-40 PEM NUT
EJECTOR ARM
IC, SERIAL EPROM, 24C01P
ROLL PIN (FOR EJECTOR ARMS)
SHIELD
STANDOFF, 2 CLEARANCE
CAP, 1µF, 20% 50V, CERAMIC
4-40X3/16PPHSEM
FA-131
7011-301B
IC-737
DP-6-1
7011-305C
ST-204-1
C-365-.1
CAP, 150pF, 10%, 1000V, CERAMIC
CAP, 1µF, 20% 50V, CERAMIC
CAP, 0.001µF, 20%, 500V, CERAMIC
CAP, 10µF, -20+100% 25V, ALUM ELEC
C-64-150P
C-237-1
C-22-.001
C-314-10
J1002,1003
CONN, 48-PIN, 3-ROW
CS-736-2
K101-140
RELAY, ULTRA-SMALL POLARIZED, TF2E-5V
RL-149
P2001
CONN, 32-PIN, 2-ROW
CS-775-1
Q101
TRANS, NPN PWR, TIP31 (T0-220AB)
TG-253
Q102
TRANS, N CHAN MOSPOW FET, 2N7000 (T0-92)
TG-195
R101,102
R103
R104
R105
R106
R107
RES, 560, 10%, 1/2W, COMPOSITION
RES, 1K, 1%, 1/8W, METAL FILM
RES, 2.49K, 1%, 1/8W, METAL FILM
RES, 1.15K, 1%, 1/8W, METAL FILM
RES, 10K, 5%, 1/4W, COMPOSITION OR FILM
RES, 220K, 5%, 1/4W, COMPOSITION OR FILM
R-1-560
R-88-1K
R-88-2.49K
R-88-1.15K
R-76-10K
R-76-220K
S107
SOCKET
S0-72
ST101
4-40X0.812 STANDOFF
ST-137-20
U101-105
U106
U107
U108
IC, 8-BIT SERIAL-IN LATCH DRIVER, 5841A
IC, RETRIG MONO MULTIVIB, 74HC123
PROGRAM
IC, AJD SHUNT REGULATOR, TL431CLP
IC-536
IC-492
7036-800A01
IC-677
FA-245-1
2-56X5/8PPH
2-56X5/16PPHSEM
6-3
Replaceable Parts
Table 6-2
Mass-terminated connector card for Model 7036, parts list
Circuit
designation
Description
2-56X3/16 PHILLIPS PAN HEAD SCREW (FOR SHIELD)
2-56X3/8 PHILLIPS PAN HEAD SCREW (FOR BRACKET)
2-56X7/16 PHILLIPS PAN HEAD SCREW (FOR SHIELD AND
SHIMS)
4-40X1/4 PHILLIPS PAN HEAD SEMS SCREW (RELAY
BOARD TO CONNECTOR BOARD)
BRACKET
CONNECTOR SHIM
SHIELD
STANDOFF
Keithley
part no.
2-56X3/16PPH
2-56X3/8PPH
2-56X7/16PPH
4-40X1/4PPHSEM
7011-307
7011-309A
7011-311A
ST-203-1
J1004
CONN, 96-PIN, 3-ROW
CS-514
P1002,1003
CONN, 48-PIN, 3-ROW
CS-748-3
6-5
4
3
2
1
LTR.
ECA NO.
REVISION
ENG.
DATE
NO.
7035-170
A
D
D
WARNING: USER SUPPLIED
LETHAL VOLTAGE MAY BE
PRESENT ON CONNECTORS
OR P.C. BOARD.
J1004
C
C
! REFER TO MANUAL FOR
MAXIMUM VOLTAGE
RATING OF CONNECTORS.
P1003
P1002
B
B
NOTE:
FOR COMPONENT INFORMATION, PLEASE REFER TO PRODUCT STRUCTURE.
A
A
MODEL
NEXT ASSEMBLY
QTY.
USED ON
KEITHLEY
KEITHLEY INSTRUMENTS INC.
CLEVELAND, OHIO 44139
4
3
DIM ARE IN IN. UNLESS OTHERWISE NOTED
DATE
DIM. TOL. UNLESS OTHERWISE SPECIFIED
DRN
XX=+.01
XXX=+.005
DO NOT SCALE THIS DRAWING
2
ANG.=+1
FRAC.=+1/64
2/18/97
CAB
SCALE
1:1
COMPONENT LAYOUT
CONNECTOR BOARD
TITLE
APPR.
C
NO.
7035-170
1
PG
1 OF 1
Replaceable Parts
Table 6-3
Model 7011-KIT-R 96-pin Female DIN connector kit
Circuit
designation
Description
96-PIN FEMALE DIN CONNECTOR
BUSHING, STRAIN RELIEF
CABLE ADAPTER, REAR EXIT (INCLUDES TWO CABLE
CLAMPS)
CONNECTOR HOUSING
Keithley
part no.
CS-787-1
BU-27
CC-64
CS-788
6-7
Index
A
G
O
AC frequency response, 4-9
General information, 1-1
Ground loops, 4-8
Offset current tests, 5-4
Operation, 4-1
Optional accessories, 1-3
Ordering information, 6-1
B
Basic switch configuration (SPST),
2-1
Block diagram, 5-9
C
Card connections and installation, 3-1
Channel assignments, 4-3
Channel to channel isolation tests, 5-5
Channel resistance tests, 5-3
Closing and opening channels, 4-5, 4-6
Common-mode isolation tests, 5-8
Component layouts and schematic diagrams, 6-2
Contact potential tests, 5-5
H
Handling and cleaning precautions,
5-1
Handling precautions,1-2, 3-1
I
ID data circuits, 5-10
IEEE-488 bus operation, 4-6
Inspection for damage, 1-2
Instruction manual, 1-3
K
Keeping connectors clean, 4-9
E
Environmental conditions, 5-2
F
Factory service, 6-1
Features, 1-1
Front panel control, 4-5
M
Magnetic fields, 4-7
Mainframe control of relay card, 4-2
Manual addenda, 1-2
Maximum signal levels, 4-1
Measurement considerations, 4-7
Model 7036 installation and removal,
3-7
Multi-pin (mass termination)
connections, 3-2
P
Parts lists, 6-1
Path isolation, 4-7
Performance verification, 5-2
Power limits, 4-1
Power-on safeguard, 5-11
Principles of operation, 5-9
R
Radio frequency interference, 4-8
Reactive loads, 4-1
Recommended equipment, 5-2
Relay control, 5-10
Relay power control, 5-10
Repacking for shipment, 1-3
Replaceable parts, 6-1
S
Safety symbols and terms, 1-2
Scanning channels, 4-5, 4-6
Service information, 5-1
Shipping contents, 1-2
Specifications, 1-2
Special handling of static-sensitive devices, 5-9
Switch card connections, 5-2
Switch card installation, 3-7
Switch card removal, 3-7
i-1
T
Troubleshooting, 5-11
Troubleshooting access, 5-11
Troubleshooting equipment, 5-11
Troubleshooting procedure, 5-12
Typical connection scheme, 3-6
Typical connection technique, 3-4
U
Unpacking and inspection, 1-2
W
Warranty information, 1-1
i-2
Service Form
Model No.
Serial No.
Date
Name and Telephone No.
Company
List all control settings, describe problem and check boxes that apply to problem.
❏
Intermittent
❏
Analog output follows display
❏
Particular range or function bad; specify
❏
❏
IEEE failure
Front panel operational
❏
❏
Obvious problem on power-up
All ranges or functions are bad
❏
❏
Batteries and fuses are OK
Checked all cables
Display or output (check one)
❏
❏
❏
Drifts
Unstable
Overload
❏
❏
Unable to zero
Will not read applied input
❏
❏
Calibration only
❏
CertiÞcate of calibration required
Data required
(attach any additional sheets as necessary)
Show a block diagram of your measurement system including all instruments connected (whether power is turned on or not).
Also, describe signal source.
Where is the measurement being performed? (factory, controlled laboratory, out-of-doors, etc.)
What power line voltage is used?
Relative humidity?
Ambient temperature?
Other?
Any additional information. (If special modiÞcations have been made by the user, please describe.)
Be sure to include your name and phone number on this service form.
°F
Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
Printed in the U.S.A.
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