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NI 9421/9423
8
ni.com
Connecting the NI 9421/9423
The NI 9421/9423 provides connections for eight digital inp
u
t
channels.
Figure 2.
NI 9421/9423 Terminal and Pin Assignments
DI0
DI1
DI2
DI3
DI4
DI5
DI6
DI7
NC
COM
0
3
4
7
0
1
2
3
4
5
6
7
8
9
COM
NC
COM
COM
NC
COM
COM
NC
COM
COM
NC
COM
COM
DI0
NC
DI1
DI2
NC
DI3
DI4
NC
DI5
DI6
NC
DI7
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
0
3
4
7