Esc “common” connector pin assignments \(j18 and – Comtech EF Data SMS-451 User 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