Keysight 34921A - 34923 A D-Sub Connectors for One-Wire Mode

36 Keysight 34921A-34925A Low Frequency Multiplexer Modules User’s Guide
Low Frequency Multiplexer Modules 34923A 40/80-Channel Reed Multiplexer
34923A D-Sub Connectors for One-Wire Mode
Bank 1
For orientation, the D-sub connector
end of the module is facing you.
Bank 2
Bank 1
34
34
35
36 37
38
39 40
41
42
43 44 45
46
47 48 49
50
18
19 20
21 22
23
24
25 26
27 28
29 30 31 32
33
GND111231322324151635361920
Reserved
Reserved 21 22 13 14 33 25 26 17 18 37 38 29 30 Interlock 1
1 2 3 4 5 6 7 8 9 1011121314151617
Interlock1123456
COM
1H
COM
1L
7 8 27 28 9 10 39 40
50-Pin D-Sub
Male Connector
Desc Pin Desc Pin Desc Pin Desc Pin Desc Pin
1 1 11 35 21 19 31 37 COM1 H 7
2 2 12 36 22 20 31 38 COM1 L 8
3 3 13 21 23 39 33 23 Interlock
1
17
4 4 14 22 24 40 34 24 Interlock
1
33
5 5 15 41 25 25 35 43 GND 34
6 6 16 42 26 26 36 44 Reserved 18
7 9 17 27 27 11 37 29 Reserved 47
8 10182828123830Reserved48
9 13194529313915Reserved49
10 14 20 46 30 32 40 16 Reserved 50
As a safety feature, interlock 1 pins (17 and 33) on Bank 1
must be shorted to enable the Bank 1 Analog Bus relays to
close. The optional 34923T-002 (for 1-wire) shorts these
pins for you. This feature protects inadvertent routing of
high voltages from the Analog Bus to the D-sub connector
of the module.
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