Comtech EF Data SMS-451 - Manual (Page 44)

SMS-451 Satellite Switch Revision 0
Installation MN/SMS451.IOM
2-18
2.3.3.3 ESC “COMMON” Connector Pin Assignments (J18 and J28)
The ESC “2” common connector is the customer interface provided on a 50-pin female D
connector. Screw locks are provided for mechanical security of the mating connector.
Signal Function Name Pin #
GROUND C-GND 1, 9, 50
SEND 64 KBPS DATA 1 C-SD1-A
C-SD1-B 34
18
SEND 64 KBPS DATA 2 C-SD2-A
C-SD2-B 19
3
SEND 64 KBPS TIMING 2 C-ST2-A
C-ST2-B 36
20
SEND 64 KBPS DATA 3 C-SD3-A
C-SD3-B 4
37
SEND 64 KBPS TIMING 3 C-ST3-A
C-ST3-B 21
5
SEND 64 KBPS DATA 4 C-SD4-A
C-SD4-B 38
22
SEND 64 KBPS TIMING 4 C-ST4-A
C-ST4-B 6
39
SEND 64 KBPS DATA 5 C-SD5-A
C-SD5-B 23
7
SEND 64 KBPS TIMING 5 C-ST5-A
C-ST5-B 40
24
TX OCTET C-TOCT-A
C-TOCT-B 8
41
SPARE C-SPR-1
C-SPR-2
C-SPR-3
25
42
26
RX OCTET C-ROCT-A
C-ROCT-B 10
43
RECEIVE 64 KBPS TIMING 5 C-RT5-A
C-RT5-B 27
11
RECEIVE 64 KBPS DATA 5 C-RD5-A
C-RD5-B 44
28
RECEIVE 64 KBPS TIMING 4 C-RT4-A
C-RT4-B 12
45
RECEIVE 64 KBPS DATA 4 C-RD4-A
C-RD4-B 29
13
RECEIVE 64 KBPS TIMING 3 C-RT3-A
C-RT3-B 46
30
RECEIVE 64 KBPS DATA 3 C-RD3-A
C-RD3-B 14
47
RECEIVE 64 KBPS TIMING 2 C-RT2-A
C-RT2-B 31
15
RECEIVE 64 KBPS DATA 2 C-RD2-A
C-RD2-B 48
32
RECEIVE 64 KBPS TIMING 1 C-RT1-A
C-RT1-B 16
49
RECEIVE 64 KBPS DATA 1 C-RD1-A
C-RD1-B 33
17