Wireless Data Gateway
B-2
November 1996
3981-A2-GN31-20
4-Wire E&M Card and
NIM Connections
The 4-Wire E&M cards in the AAC are connected to
the 4-Wire NIMs with a cable terminated with 50-position
telco connectors. The pin assignments are shown in
Table B-1.
Table B-1
(1 of 2)
4-Wire NIM/E&M Connector Pin Assignments
Port Number
Designation
Pin Number
1
R
1
1
T1
27
1
R1
2
1
E
28
1
M
3
2
T
29
2
R
4
2
T1
30
2
R1
5
2
E
31
2
M
6
3
T
32
3
R
7
3
T1
33
3
R1
8
3
E
34
3
M
9
4
T
35
4
R
10
4
T1
36
4
R1
11
4
E
37
4
M
12
Table B-1
(2 of 2)
4-Wire NIM/E&M Connector Pin Assignments
Port Number
Designation
Pin Number
5
T
38
5
R
13
5
T1
39
5
R1
14
5
E
40
5
M
15
6
T
41
6
R
16
6
T1
42
6
R1
17
6
E
43
6
M
18
7
T
44
7
R
19
7
T1
45
7
R1
20
7
E
46
7
M
21
8
T
47
8
R
22
8
T1
48
8
R1
23
8
E
49
8
M
24
Not Used
SG
25
Not Used
SB
50
