Comtech EF Data SMS-451 - 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