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A. b-141-1 interface breakout panel, Erview, Appendix a. b-141-1 interface breakout panel – Comtech EF Data SMS-451 User Manual

Page 53: A.1 overview

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A–1

Appendix A. B-141-1 INTERFACE

BREAKOUT PANEL

This appendix provides a description and external connections of the breakout panel used
with the SMS-451T 1:1 ESC Protection Switch.

A.1

Overview

The B-141-1 breakout panel (Figure A-1) provides industry standard connectors for the
signals present on the SDM-140 ESC-1 connector. The signals are identical to the ESC
overhead channel specified by IESS-308, Rev. 4.The assembly number for the breakout
panel is AS/1953. The cable used to connect between the breakout panel and the modem
ESC-1 port is CA/0737.

BREAKOUT PANL

ADPCM AUDIO

RS422-8K BIT DATA

ALARMS

BACKWARD ALARM OUTPUTS

+

-

G

+

-

G

+

-

G

+

-

G

G

C

1

D

F

C

N

0

1

D

F

N

N

C

1

B

W

1

C

2

B

W

2

N

0

2

B

W

3

N

C

2

N

C

3

B

W

4

C

3

N

C

4

C

4

D

M

A

N

0

3

N

0

4

TX1

TX2

RX1

RX2

Figure A-1. B-141-1 Breakout Panel









B-141-1 BREAKOUT PANEL