Chapter 2 Connecting Signals
SCXI-1125 User Manual 2-8 ni.com
Table 2-2. Rear Signal Pin Assignments
Rear Connector
Diagram Signal Name Pin Number Pin Number Signal Name
NC means no
connection
AI GND 1 2 AI GND
CH 0 + 3 4 CH 0 –
CH 1 + 5 6 CH 1–
CH 2 + 7 8 CH 2 –
CH 3 + 910 CH 3 –
CH 4 + 11 12 CH 4 –
CH 5 + 13 14 CH 5 –
CH 6 + 15 16 CH 6 –
CH 7 + 17 18 CH 7 –
OUT REF 19 20 NC
NC 21 22 NC
NC 23 24 D GND
SER DAT IN 25 26 SER DAT OUT
DAQ D*/A 27 28 NC
SLOT 0 SEL* 29 30 NC
NC 31 32 NC
D GND 33 34 NC
NC 35 36 AI HOLD COMP, AI HOLD
SER CLK 37 38 NC
NC 39 40 NC
NC 41 42 NC
NC 43 44 NC
NC 45 46 SYNC
NC 47 48 NC
NC 49 50 NC
49 50
47 48
45 46
43 44
41 42
39 40
37 38
35 36
33 34
31 32
29 30
27 28
25 26
23 24
21 22
19 20
17 18
15 16
13 14
11 12
910
78
56
34
12