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

Page 43

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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