Comtech EF Data SMS-451 - Manual (Page 55)

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