Comtech EF Data SMS-451 - Manual (Page 53)

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