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External connections, Esc-1 interface j1 – Comtech EF Data SMS-451 User Manual

Page 55

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SMS-451T 1:1 ESC Protection Switch

Revision 0

B-141-1 Interface Breakout Panel

MN/SMS451.IOM

A–3

A.2 External

Connections

A.2.1

ESC-1 Interface J1

The ESC-1 interface is provided on a 50-pin female D connector accessible from the rear
of the breakout panel. Screw locks are provided for mechanical security of the mating
connector.

Signal Function

Name

Pin #

GROUND GND

1,

2

1KHZ TX OCTET

TXO-A
TXO-B

4
5

8KBIT TX DATA

TXD-A
TXD-B

37
38

8KHZ TX CLOCK

TXC-A
TXC-B

21
22

1KHZ RX OCTET

RXO-A
RXO-B

6
7

8KBIT RX DATA

RXD-A
RXD-B

39
40

8KHZ RX CLOCK

RXC-A
RXC-B

23
24

BACKWARD ALARM OUTPUT 1

BWO1-C
BWO1-NO
BWO1-NC

8
41
25

BACKWARD ALARM OUTPUT 2

BWO2-C
BWO2-NO
BWO2-NC

9
42
26

BACKWARD ALARM OUTPUT 3

BWO3-C
BWO3-NO
BWO3-NC

10
43
27

BACKWARD ALARM OUTPUT 4

BWO4-C
BWO4-NO
BWO4-NC

11
44
28

BACKWARD ALARM INPUT

BWI-1
BWI-2
BWI-3
BWI-4

12
13
14
15

ADPCM 1 AUDIO IN

A1I-A
A1I-B

45
29

ADPCM 1 AUDIO OUT

A1O-A
A1O-B

46
30

ADPCM 2 AUDIO IN

A2I-A
A2I-B

47
29

ADPCM 2 AUDIO OUT

A2O-A
A2O-B

48
32

DEMOD FAULT RELAY

DF-COM
DF-NO

16
50

DEFERRED MAINTENANCE ALARM

DMA

17