Agilent 34937A-34939A
General Purpose
Switch Modules
User’s Guide
Agilent Technologies, Inc.
Printed in Malaysia
Edition 1
June 2008 E0608
*34980- 90037*
34980-90037
Agilent Technologies
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Additional Safety Notices
The following general safety precautions
must be observed during all phases of oper-
ation of this instrument. Failure to comply
with these precautions or with specific
warnings or instructions elsewhere in this
manual violates safety standards of design,
manufacture, and intended use of the
instrument. Agilent Technologies assumes
no liability of the customer’s failure to com-
ply with the requirements.
Do Not Modify the Instrument
Waste Electrical and Electronic
Equipment (WEEE) Directive
2002/96/EC
Do not install substitute parts or perform
any unauthorized modification to the prod-
uct. Return the product to an Agilent Sales
and Service Office for service and repair to
ensure that safety features are maintained.
In Case of Damage
Instruments that appear damaged or defec-
tive should be made inoperative and
secured against unintended operation until
they can be repaired by qualified service
personnel.
General
This product complies with the WEEE
Directive (2002/96/EC) marking require-
ment. The affixed product label (see above)
indicates that you must not discard this
electrical/electronic product in domestic
household waste.
Do not use this products in any manner not
specified by the manufacturer. The protec-
tive features of this product may be
impaired if it is used in a manner not speci-
fied in the operation instructions.
Safety Symbols
Product Category: With reference to the
equipment types in the WEEE directive
Annex 1, this product is classified as a
“Monitoring and Control instrumentation”
product.
Alternating current
Before Applying Power
Verify that all safety precautions are taken.
Make all connections to the unit before
applying power.
Frame or chassis
terminal
To return unwanted products, contact
your local Agilent office, or go to
for more information.
Ground the Instrument
Standby supply. Unit is
not completely
disconnected from ac
mains when switch is off
This product is provided with protective
earth terminals. To minimize shock hazard,
the instrument must be connected to the
ac power mains through a grounded power
cable, with the ground wire firmly con-
nected to an electrical ground (safety
ground) at the power outlet. Any interrup-
tion of the protective (grounding) conduc-
tor or disconnection of the protective earth
terminal will cause a potential shock haz-
ard that could result in personal injury.
Technical Support
If you have questions about your shipment,
or if you need information about warranty,
service, or technical support, contact
Agilent Technologies:
Caution, risk of electric
shock
Caution, refer to
accompanying description
In the United States: (800) 829-4444
In Europe: 31 20 547 2111
In Japan: 0120-421-345
Do Not Operate in an Explosive
Atmosphere
Or go to www.agilent.com/find/assist
for information on contacting Agilent in
your country of specific location. You can
also contact your Agilent Technologies
Representative.
Do not operate the instrument in the pres-
ence of flammable gases or fumes.
Do Not Remove the Instrument
Cover
Only qualified, service-trained personal
who are aware of the hazards involved
should remove instrument covers. Always
disconnect the power cable and any exter-
nal circuits before removing the instrument
cover.
Agilent 34937A-34939A General Purpose Switch Modules User’s Guide
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The Declaration of Conformity (DoC) for the 34980A mainframe
instrument can be found on page iii in the 34980A Mainframe User’s
Guide. That DoC applies to the 34980A mainframe and all available
plug-in modules.
iv
Agilent 34937A-34939A General Purpose Switch Modules User’s Guide
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General Purpose Switch Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Operating Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Electrical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Temperature Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Switching Reactive Loads. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Hardware Power-Fail Jumper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
34937A, 34938A and 34939A SCPI Programming Examples . . . . . . . . . . . . . . . . . . . . . . . . .4
Opening and Closing Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Reading Jumper State and System Identity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
34937A 32-Channel GP Switch Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
34937A Simplified Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
34937A D-Sub Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
34937T Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
34938A 20-Channel High-Current GP Switch Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
34938A Simplified Schematic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
34938A D-Sub Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
34938T Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
34939A 64-Channel High-Density Form-A GP Switch Module . . . . . . . . . . . . . . . . . . . . . .12
34939A Simplified Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
34939A D-Sub Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
34939T Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
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vi
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General Purpose Switch Modules
General Purpose Switch Modules
This User’s Guide covers the following two plug-in modules for the Agilent
34980A Multifunction Switch/Measure Unit:
34937A
34938A
34939A
28-channel Form C and 4-channel Form A
28-channel 5-amp Form A
64-Channel High-Density Form A
• The 34937A provides independent control of 32 relays, including:
• Twenty-eight Form C relays, each rated for 1 A at 60 W per channel
• Four Form A (SPST) relays, each rated for 5 A at 150 W per
channel.
• The 34938A, for power switching applications, offers 20 Form A relays,
each rated for 5 A at 150 W per channel.
• The 34939A provides independent control of 64 Form-A relays, each
rated for 1 A at 60 W per channel.
All three modules utilize armature-latching relays.
You can use these general-purpose switches in your 34980A mainframe for
device actuation, digital output, signal routing, or — combined with other
switch modules — to create flexible switching topologies. You can close
multiple channels at the same time. These modules do not connect to the
34980A’s analog buses.
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Operating Considerations.
Operating Considerations.
Do not connect either the 34937A, 34938A or 34939A module
directly to a mains power outlet. If it is necessary to switch a mains
voltage or any circuit where a large inductive load may be
switched, you must add signal conditioning elements to reduce the
potential transients before they reach the module or the Analog
Buses.
WARNING
Electrical Considerations
See the Introduction to the Plug In Modules chapter of the 34980A
Mainframe User’s Guide for detailed environmental operating conditions
for the 34980A mainframe and its installed modules. That guidance sets
maximum per channel current and power ratings at rated voltage for
pollution degree 1 (dry) and pollution degree 2 (possible condensation)
conditions, for each of the GP modules.
Temperature Sensor
A temperature sensor on these modules triggers system interrupts when
high-carry current-induced heat on the modules is excessive and sets the
HOT annunciator on the front panel. This over-temperature situation
generates an SRQ event when the factory-set 70 oC threshold is reached. It
is up to the user to determine what, if any, action should be taken.
Switching Reactive Loads
Reactive loads (those that include significant inductance or capacitance)
can cause voltage spikes or current spikes during switching operations.
The general purpose modules are designed for switching reactive loads.
The optional 34937T and 34938T terminal blocks have solder pads for
adding snubber circuits for the 5 A relays to reduce the reactive
snubber circuit pads and installation information about a snubber circuit.
Hardware Power-Fail Jumper
A hardware jumper on the 34937A and 34938A modules allows you to
define the power-failure states for the modules’ 5 A latching relays.
Depending on the position of the jumper, the 5 A relays will either open
or maintain state when system power failure occurs.
On the 34939A module, a hardware jumper allows you to define the
power-failure state affecting all 64 of the module’s 1 A latching relays.
Depending on the position of the jumper, these relays will either open or
maintain state when system power failure occurs.
2
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Operating Considerations.
The jumpers are positionable across pins 1–2 (“Open” position) or across
pins 2–3 (“Maintain” position). When shipped from the factory, the
power-fail jumper is in the Maintain position (i.e. all relays maintain their
present state when power fails).
Before changing the position of the jumper, remove external
connections from the module. Wait five to ten seconds to allow the
WARNING
module’s internal capacitors to discharge.
After a five- to ten-second delay, remove the sheet metal cover from the
module and move the position of the jumper mounted on the module. See
the figure below for the jumper’s location on the module.
1
1
2
3
Ope
n
2
Maintain
U205
3
Power Down State
U301
C301
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34937A, 34938A and 34939A SCPI Programming Examples
34937A, 34938A and 34939A SCPI Programming Examples
The programming examples below provide you with SCPI command
examples to use for actions specific to the general purpose switch
modules.
The slot and channel addressing scheme used in these examples follow the
form sccc where s is the mainframe slot number (1 through 8) and ccc is
the channel number.
For complete information on the SCPI commands used to program the
34980A, and for example programs, refer to the Agilent 34980A
Programmer’s Reference contained on the 34980A Product Reference CD.
Opening and Closing Channels
Example: Closing and opening channels The first two commands close
channel 3 for a module in slot 2, then channel 5 for that module.
The last command opens both channel 3 and channel 5.
ROUTe:CLOSe (@2003)
ROUTe:CLOSe (@2005)
ROUTe:OPEN (@2003,2005)
Example: Querying channels for open or closed state The following command
returns a 1 (true) or 0 (false) state of channel 016 for a module in slot 3.
ROUTe:CLOSe (@3016)
ROUTe:CLOSe? (@3016) !Returns a 1
ROUTe:OPEN? (@3016) !Returns a 0
Reading Jumper State and System Identity
Example: Querying the power-failure state of 5 A relays The following command
returns the position of the power-fail jumper, either “MAIN” (all relays
maintain their present state when power fails) or “OPEN” (all relays open
when power fails) for a module in slot 4. If this command is sent to a
module other than the 34937A or 34938A, “NONE” is returned (no error is
generated). In particular, the position of the power-fail jumper on the
34939A module cannot be queried using this commmand.
SYSTem:MODule:PFAil:JUMPer:AMP5? 4
Example: Querying the system for module identify (all modules) The following
command returns the identify of the module installed in slot 7.
SYSTem:CTYPe? 7
4
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34937A, 34938A and 34939A SCPI Programming Examples
Reading Cycle Count and Resetting Modules to Power-On State
Example: Reading the cycle count for a relay (all switch modules) The following
command returns the relay cycle count on channel 7 and channel 16 for a
module in slot 1.
DIAGnostic:RELay:CYCLes? (@1007,1016)
Example: Clearing the cycle count for a relay (all switch modules) The following
command resets the relay cycle count on channels 7 and 16 for a module
in slot 1.
DIAGnostic:RELay:CYCLes:CLEar (@1007,1016)
Example: Resetting Module(s) to power-on state (all modules) The following
command resets a module in slot 4 to its power-on state.
SYSTem:CPON 4
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34937A 32-Channel GP Switch Module
34937A 32-Channel GP Switch Module
The 34937A general-purpose switch module provides independent control
of:
• Twenty-eight Form C (SPDT) latching relays rated at 1 A
• Four Form A (SPST) latching relays rated at 5 A. You can set the
A temperature sensor on these modules triggers system interrupts
NOTE
when high-carry current-induced heat on the modules reaches a
threshold of 70 oC. See description of the “HOT” annunciator on
page 2.
34937A Simplified Schematic
NC
NO
Channel 001
(1A Form C)
NO
Channel 029
(5A Form A)
COM
COM
NC
NO
Channel 028
(1A Form C)
NO
Channel 032
(5A Form A)
COM
COM
6
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34937A 32-Channel GP Switch Module
34937A D-Sub Connectors
Bank 1
Bank 2
Bank 1
For orientation, the D-sub connector end
of the module is facing you.
4NO 1NO
NC
17
29NO 29C 7NO 3NO 12NO 8NO
13NO 9NO 5NO 2NO 14NO 10NO 30NO 30C
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Reserved 11C 7C 3C
12C 8C
4C
24
1C
25
13C 9C
5C
28
2C
29
14C 10C 6C GND
18
21
22
27
30
31
32
19
20
23
26
33
14NC 10NC 6NC 6NO
GND 11NO 11NC 7NC 3NC 12NC 8NC 4NC 1NC 13NC 9NC 5NC 2NC
41
34
38
43
44
45
47
48
49
35
39
40
42
46
36
37
50
Channel
Pin
Channel
Pin
41
Channel
Pin
Channel
Pins Channel
48 13 NC
13 Common 26
Pins Channel
Pin
1 NC
42
4 NC
7 NC
37
10 NC
43 30 NO
15
1 Common 25
4 Common 24
7 Common 20
10 Common 31
30 Common 16
1 NO
2 NC
8
4 NO
5 NC
7
7 NO
8 NC
3
10 NO
11 NC
14
36
13 NO
14 NC
9
Reserved
GND
18
33
34
46
45
40
47
2 Common 29
5 Common 28
8 Common 23
11 Common 19
14 Common 30
GND
2 NO
3 NC
12
38
5 NO
6 NC
11
49
8 NO
9 NC
6
11 NO
12 NC
35
39
14 NO
29 NO
13
1
No Connect 17
44
3 Common 21
6 Common 32
6 NO 50
9 Common 27
9 NO 10
12 Common 22
29 Common 2
3 NO
4
12 NO
5
Bank 2
NC
17
31NO 31C 21NO
26NO 22NO
27NO 23NO
16NO 28NO 24NO 32NO 32C
17NO
15NO
8
19NO
11
18NO
50-Pin D-Sub
1
2
3
4
5
6
7
9
10
12
13
14
15
16
Male Connector
Reserved 25C 21C 17C
26C 22C 18C 15C 27C 23C 19C 16C 28C 24C 20C GND
18
21
22
24
27
28
29
30
31
32
19
20
23
25
26
33
20NO
50
GND 25NO 25NC 21NC 17NC 26NC 22NC 18NC 15NC 27NC 23NC 19NC 16NC 28NC 24NC 20NC
41
34
38
43
44
45
47
48
49
35
39
40
42
46
36
37
Channel
Pin
Channel
Pin
41
Channel
Pin
Channel
Pins Channel
48 27 NC
Pins Channel
Pin
15 NC
42
18 NC
21 NC
37
24 NC
43
32 NO
15
15 Common 25
18 Common 24
21 Common 20
24 Common 31
27 Common 26
32 Common 16
15 NO
16 NC
8
18 NO
19 NC
7
21 NO
22 NC
3
24 NO
25 NC
14
36
27 NO
28 NC
9
Reserved
GND
18
33
34
46
45
40
47
16 Common 29
19 Common 28
22 Common 23
25 Common 19
28 Common 30
GND
16 NO
17 NC
12
38
19 NO
20 NC
11
49
22 NO
23 NC
6
25 NO
26 NC
35
39
28 NO
31 NO
13
1
No Connect 17
44
17 Common 21
17 NO
20 Common 32
20 NO 50
23 Common 27
23 NO 10
26 Common 22
26 NO
31 Common 2
4
5
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34937A 32-Channel GP Switch Module
34937T Terminal Block
This terminal block with screw-type connections is labeled with the model
number and the abbreviated module name. In addition, space is available
on the label for you to write the slot number.
The 34980A Product Reference CD (shipped with the instrument) contains
a 34937T Wiring Log for you to document your wiring configuration for
this module. You can open the wiring log file in Microsoft® Excel® or
Adobe® Acrobat® format.
Wire Size:
20 AWG Typical
18 AWG Max
Pads for user-supplied snubber
circuity to alleviate reactive
transients. The circuits may
consist of resistors, capacitors,
varistors, or other elements as
needed to reduce the switching
voltage and current transients
inherent in reactive circuits.
8
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34938A 20-Channel High-Current GP Switch Module
34938A 20-Channel High-Current GP Switch Module
The 34938A high-current GP switch module provides twenty 5 A Form A
(SPST) relays for general purpose switching needs. You can set the
A temperature sensor on these modules triggers system interrupts
NOTE
when high-carry current-induced heat on the modules reaches a
threshold of 70 oC. See description of the “HOT” annunciator on
page 2.
34938A Simplified Schematic
NO
Channel 001
(5A Form A)
COM
NO
Channel 020
(5A Form A)
COM
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34938A 20-Channel High-Current GP Switch Module
34938A D-Sub Connectors
Bank 1
Bank 2
For orientation, the D-sub connector
end of the module is facing you.
Bank 1
NC
17
6NO 6C 1NO 1C 7NO 7C
3NO 3C 9NO 9C 4NO 4C 5NO 5C
2NO 2C
50-Pin D-Sub
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Male Connector
Reserved
18
1NO 1C 7NO 7C 2NO
2C 3NO 3C 9NO 9C 4NO
4C 5NO 5C GND
21
22
24
27
28
29
30
31
32
19
20
23
25
26
33
10NO 10C 10NO 10C
9C 4NO 4C
GND 6NO 6C 7NO 7C 8NO 8C 8NO 8C 9NO
41
34
38
43
44
45
47
48
49
35
39
40
42
46
36
37
50
Channel
1NO
Pin
Channel
Pin
Channel
Pin
Channel
Pins Channel
37 9NO
Pins
3
3NO
25
5NO
31
7NO
43
1Common
1NO
4
3Common 26
4NO 13
4Common 14
4NO 29
4Common 30
4NO 45
4Common 46
5NO 15
5Common 16
5Common 32
7Common 38
8NO 39
8Common 40
8NO 41
8Common 42
9NO 11
9Common 12
9NO 27
9Common 28
9Common 44
10NO 47
10Common 48
10NO 49
10Common 50
19
6NO
1
1Common 20
6Common
6NO
2
2NO
7
35
2Common
2NO
8
6Common 36
23
7NO
5
Reserved
GND
18
33
34
2Common 24
3NO
3Common 10
7Common
7NO
6
9
21
GND
7Common 22
No Connect 17
Bank 2
NC
17
16NO 16C 11NO 11C 17NO 17C
13NO 13C 19NO 19C 14NO 14C 15NO 15C
12NO 12C
50-Pin D-Sub
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Male Connector
Reserved 11NO 11C 17NO 17C 12NO 12C 13NO 13C 19NO 19C 14NO 14C 15NO 15C GND
18
21
22
24
27
28
29
30
31
32
19
20
23
25
26
33
20NO 20C 20NO 20C
GND 16NO 16C 17NO 17C 18NO 18C 18NO 18C 19NO 19C 14NO 14C
41
34
38
43
44
45
47
48
49
35
39
40
42
46
36
37
50
Channel
11NO
Pin
Channel
Pin
25
Channel
Pin
Channel
Pins Channel
37 19NO
Pins
3
13NO
15NO
31
17NO
43
11Common
11NO
4
13Common 26
14NO 13
14Common 14
14NO 29
14Common 30
14NO 45
14Common 46
15NO 15
15Common 16
15Common 32
17Common 38
18NO 39
18Common 40
18NO 41
18Common 42
19NO 11
19Common 12
19NO 27
19Common 28
19Common 44
20NO 47
20Common 48
20NO 49
20Common 50
19
16NO
1
11Common 20
16Common
16NO
2
12NO
7
35
12Common
12NO
8
16Common 36
23
17NO
5
Reserved
GND
18
33
34
12Common 24
13NO
13Common 10
17Common
17NO
6
9
21
GND
17Common 22
No Connect 17
10
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34938A 20-Channel High-Current GP Switch Module
34938T Terminal Block
This terminal block with screw-type connections is labeled with the model
number and the abbreviated module name. In addition, space is available
on the label for you to write the slot number.
The 34980A Product Reference CD (shipped with the instrument) contains
a 34938T Wiring Log for you to document your wiring configuration for
this module. You can open the wiring log file in Microsoft® Excel® or
Adobe® Acrobat® format.
Wire Size:
20 AWG Typical
18 AWG Max
Pads for user-supplied snubber circuity to
alleviate reactive transients. The circuits may
consist of resistors, capacitors, varistors,
or other elements as needed to reduce the
switching voltage and current transients
inherent in reactive circuits.
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34939A 64-Channel High-Density Form-A GP Switch Module
34939A 64-Channel High-Density Form-A GP Switch Module
The 34939A high-density GP switch module provides sixty-four 1 A Form
A (SPST) relays for general purpose switching needs. You can set the
A temperature sensor on these modules triggers system interrupts
NOTE
when high-carry current-induced heat on the modules reaches a
threshold of 70 oC. See description of the “HOT” annunciator on
page 2.
34939A Simplified Schematic
NO
Channel 001
(1A Form A)
COM
NO
Channel 064
(1A Form A)
COM
12
Agilent 34937A-34939A General Purpose Switch Modules User’s Guide
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34939A 64-Channel High-Density Form-A GP Switch Module
34939A D-Sub Connectors
Bank 1
Bank 2
Bank 1
For orientation, the D-sub connector
end of the module is facing you.
4C 4NO 7C 7NO 10C 10NO 13C 13NO 16C 16NO 18C 18NO 21C 21NO 24C 24NO 27C 27NO 30C 30NO
20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
78-Pin D-Sub
Male Connector
3C 3NO 6C 6NO 9C 9NO 12C 12NO 15C 15NO 19C 19NO 22C 22NO 25C 25NO 28C 28NO NC
26
38
21
24
25
27
30
31
37
32
33
34
35
39
22
23
28
29
36
NC 5C 5NO 8C 8NO 11C 11NO 14C 14NO 17C 17NO 20C 20NO 23C 23NO 26C 26NO 29C 29NO NC
40
41
44
45
46
48
49
50
51
52
53
54
55
57
58
59
42
43
47
56
NC 1C 1NO 2C 2NO NC NC NC GND
32C 32NO
31C 31NO
Res. NC NC NC NC NC
60
63
64
66
69
70
71
72
73
74
77
78
61
62
65
67
68
75
76
Channel
Pin
62
Description Pin
8 NO 44
8 Common 43
9 NO 26
9 Common 25
10 NO
10 Common 5
Description Pin
15 NO 30
15 Common 29
16 NO 10
16 Common 9
Description Pin
22 NO 34
22 Common 33
23 NO 54
23 Common 53
24 NO 16
24 Common 15
25 NO 36
25 Common 35
26 NO 56
26 Common 55
27 NO 18
27 Common 17
28 NO 38
28 Common 37
Description Pin
29 NO 58
29 Common 57
30 NO 20
30 Common 19
31 NO 78
31 Common 77
32 NO 76
Description Pin
1 NO
No Connect 67
No Connect 70
No Connect 71
No Connect 72
No Connect 73
No Connect 74
Chassis GND 68
1 Common 61
2 NO 64
2 Common 63
3 NO 22
3 Common 21
6
17 NO
50
17 Common 49
4 NO
2
11 NO
46
18 NO
18 Common 11
19 NO 32
19 Common 31
20 NO 52
20 Common 51
21 NO 14
21 Common 13
12
4 Common
5 NO
1
11 Common 45
32 Common 75
No Connect 39
No Connect 40
No Connect 59
No Connect 60
No Connect 65
No Connect 66
Reserved
69
42
12 NO
12 Common 27
13 NO
13 Common 7
28
5 Common 41
6 NO 24
6 Common 23
8
7 NO
4
3
14 NO
48
7 Common
14 Common 47
Agilent 34937A-34939A General Purpose Switch Modules User’s Guide
13
Download from Www.Somanuals.com. All Manuals Search And Download.
34939A 64-Channel High-Density Form-A GP Switch Module
Bank 2
Bank 1
Bank 2
For orientation, the D-sub connector
end of the module is facing you.
58C 58NO 61C 61NO 52C 52NO 55C 55NO 46C 46NO 48C 48NO 39C 39NO 42C 42NO 33C 33NO 36C 36NO
20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
78-Pin D-Sub
57C 57NO 60C 60NO 51C 51NO 54C 54NO 45C 45NO 49C 49NO 40C 40NO 43C 43NO 34C 34NO NC
Male Connector
38
26
21
24
25
27
30
31
37
32
33
34
35
39
22
23
28
29
36
NC 59C 59NO 62C 62NO 53C 53NO 56C 56NO 47C 47NO 50C 50NO 41C 41NO 44C 44NO 35C 35NO NC
40
44
49
50
51
53
54
55
57
58
59
41
45
46
48
52
42
43
47
56
NC 63C 63NO 64C 64NO NC NC NC GND Res. NC
38C 38NO
37C 37NO
NC NC NC NC
60
63
64
66
69
70
71
72
73
74
77
78
61
62
65
67
68
75
76
Channel
Pin
18
Description Pin
40 NO 34
40 Common 33
41 NO 54
41 Common 53
42 NO 16
42 Common 15
43 NO 36
43 Common 35
44 NO 56
44 Common 55
45 NO 30
45 Common 29
46 NO 10
46 Common 9
Description Pin
47 NO 50
47 Common 49
48 NO 12
48 Common 11
49 NO 32
49 Common 31
50 NO 52
50 Common 51
51 NO 26
51 Common 25
52 NO
52 Common 5
Description Pin
54 NO 28
54 Common 27
55 NO
55 Common 7
Description Pin
61 NO
61 Common 3
Description Pin
33 NO
4
No Connect 67
No Connect 70
No Connect 71
No Connect 72
No Connect 73
No Connect 74
Chassis GND 68
33 Common 17
34 NO 38
34 Common 37
35 NO 58
35 Common 57
36 NO 20
36 Common 19
37 NO 78
37 Common 77
38 NO 76
38 Common 75
39 NO 14
39 Common 13
8
62 NO
44
62 Common 43
56 NO
48
63 NO
63 Common 61
64 NO 64
62
56 Common 47
57 NO
57 Common 21
58 NO
58 Common 1
22
64 Common 63
No Connect 39
No Connect 40
No Connect 59
No Connect 60
No Connect 65
No Connect 66
Reserved
69
2
6
59 NO
42
59 Common 41
53 NO
46
60 NO
24
53 Common 45
60 Common 23
14
Agilent 34937A-34939A General Purpose Switch Modules User’s Guide
Download from Www.Somanuals.com. All Manuals Search And Download.
34939A 64-Channel High-Density Form-A GP Switch Module
34939T Terminal Block
This terminal block with screw-type connections is labeled with the model
number and the abbreviated module name. In addition, space is available
on the label for you to write the slot number.
The 34980A Product Reference CD (shipped with the instrument) contains
a 34939T Wiring Log for you to document your wiring configuration for
this module. You can open the wiring log file in Microsoft® Excel® or
Adobe® Acrobat® format.
33
34
35
36
37
38
1
2
3
4
5
6
C NO C NO C NO C NO C NO C NO
C NO
C NO
C NO C NO C NO C NO
C NO C NO C NO C NO C NO C NO
C NO C NO C NO C NO C NO C NO
39
40
41
42
43
44
7
8
9
10
11
12
45
46
47
48
49
50
Wire Size:
20 AWG Typical
18 AWG Max
13
C NO
14
C NO
15
16
17
18
C NO C NO C NO C NO C NO C NO
C NO C NO C NO C NO
C NO C NO C NO C NO C NO C NO
C NO C NO C NO C NO C NO C NO
52
51
57
53
59
54
55
56
19
20
21
22
23
24
58
60
61
62
26
25
27
28
29
30
C NO C NO C NO C NO C NO C NO
C NO C NO
C NO
C NO
32
C NO
C NO
31
C NO C NO C NO C NO
63
64
Agilent 34937A-34939A General Purpose Switch Modules User’s Guide
15
Download from Www.Somanuals.com. All Manuals Search And Download.
34939A 64-Channel High-Density Form-A GP Switch Module
16
Agilent 34937A-34939A General Purpose Switch Modules User’s Guide
Download from Www.Somanuals.com. All Manuals Search And Download.
Index
18
Agilent 34937A-34939A General Purpose Switch Modules User’s Guide
Download from Www.Somanuals.com. All Manuals Search And Download.
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