Keysight Technologies 34921A User Manual page 21

Bank 2
*TSIL = Temperature
Sensor Interface Line.
Provides thermocouple
reference sensor serial
output line to the
mainframe processor.
Description Pin
21H 1
21L 2
22H 3
22L 4
23H 5
23L 6
24H 9
24L 10
25H 13
25L 14
As a safety feature, interlock 2 pins (17 and 33) on Bank 2 must be shorted to
WARNING
enable the Bank 2 Analog Bus relays to close. The optional 34921T terminal
block shorts these pins for you. This feature protects inad vertent routing of
high voltages from the Analog Bus to the D-sub connector of the module.
Keysight 34921A-34925A User's Guide
21H 21L 22H 22L 23H
1 2 3 4
TSIL* 31H 31L 27H 27L 37H
18 19 20 21
GND 26H 26L 36H 36L 32H
34 35 36 37
Description Pin
26H 35
26L 36
27H 21
27L 22
28H 41
28L 42
29H 27
29L 28
30H 45
30L 46
COM COM
2H 2L
23L 24H 24L 34H
5 6 7 8 9 10
37L 33H 33L 29H 29L 39H 39L 35H 35L Interlock 2
22 23 24 25 26 27
32L 28H 28L 38H
38 39 40 41 42 43
Description Pin
31H 19
31L 20
32H 39
32L 40
33H 25
33L 26
34H 11
34L 12
35H 31
35L 32
34L 25H 25L 40H 40L
11 12 13 14 15 16
28 29 30 31 32 33
AMP AMP AMP
38L 30H 30L
43L 43I 44L
44 45 46 47 48 49
Description Pin
36H 37
36L 38
37H 23
37L 24
38H 43
38L 44
39H 29
39L 30
40H 15
40L 16
Interlock 2
50-Pin
17
D-Sub Male
Connector
AMP
44I
50
Description Pin
COM2 H 7
COM2 L 8
Interlock 2 17
Interlock 2 33
GND 34
TSIL* 18
AMP 43L 47
AMP 43I 48
AMP 44L 49
AMP 44I 50
21