Esc “b” connector pin assignments \(j17 and j27 – Comtech EF Data SMS-451 User Manual
Page 43

SMS-451 Satellite Switch
Revision 0
Installation
MN/SMS451.IOM
2-17
2.3.3.2
ESC “B” Connector Pin Assignments (J17 and J27)
The ESC backup interface is provided on a 50-pin female D connector. Screw locks are
provided for mechanical security of the mating connector.
Signal Function
Name
Pin #
GROUND
B-GND
1, 9, 50
SEND 64 KBPS DATA 1
B-SD1-A
B-SD1-B
34
18
SEND 64 KBPS TIMING 1
B-ST1-A
B-ST1-B
2
35
SEND 64 KBPS DATA 2
B-SD2-A
B-SD2-B
19
3
SEND 64 KBPS TIMING 2
B-ST2-A
B-ST2-B
36
20
SEND 64 KBPS DATA 3
B-SD3-A
B-SD3-B
4
37
SEND 64 KBPS TIMING 3
B-ST3-A
B-ST3-B
21
5
SEND 64 KBPS DATA 4
B-SD4-A
B-SD4-B
38
22
SEND 64 KBPS TIMING 4
B-ST4-A
B-ST4-B
6
39
SEND 64 KBPS DATA 5
B-SD5-A
B-SD5-B
23
7
SEND 64 KBPS TIMING 5
B-ST5-A
B-ST5-B
40
24
TX OCTET
B-TOCT-A
B-TOCT-B
8
41
SPARE B-SPR-1
B-SPR-2
B-SPR-3
25
42
26
RX OCTET
B-ROCT-A
B-ROCT-B
10
43
RECEIVE 64 KBPS TIMING 5
B-RT5-A
B-RT5-B
27
11
RECEIVE DATA 5
B-RD5-A
B-RD5-B
44
28
RECEIVE 64 KBPS TIMING 4
B-RT4-A
B-RT4-B
12
45
RECEIVE 64 KBPS DATA 4
B-RD4-A
B-RD4-B
29
13
RECEIVE 64 KBPS TIMING 3
B-RT3-A
B-RT3-B
46
30
RECEIVE 64 KBPS DATA 3
B-RD3-A
B-RD3-B
14
47
RECEIVE 64 KBPS TIMING 2
B-RT2-A
B-RT2-B
31
15
RECEIVE 64 KBPS DATA 2
B-RD2-A
B-RD2-B
48
32
RECEIVE 64 KBPS TIMING 1
B-RT1-A
B-RT1-B
16
49
RECEIVE 64 KBPS DATA 1
B-RD1-A
B-RD1-B
33
17