Mocomtech SLM-5650 - Manual (Page 46)

SLM-5650 Satellite Modem Revision 2
Installation MN/SLM5650.IOM
2–8
2.3.7 Alarms Connector, (J8)
The alarm connector provides Form C contact closures for alarm reporting. The three Form C
summary fault contacts are Modulator, Demodulator Common Equipment.
The alarm connection is a 9-pin female D connector (J8) located on the rear panel of the modem.
Screw locks are provided for mechanical security on the mating connector.
Pin # Signal Function Name
8 Unit Alarm is faulted NO
3 Unit Alarm is not faulted NC
7 Unit Alarm common COM
5 Rx Alarm is faulted NO
9 Rx Alarm is not faulted NC
4 Rx Alarm common COM
2 Tx Alarm is faulted NO
6 Tx Alarm is not faulted NC
1 Tx Alarm common COM
2.3.8 Auxiliary Connector, (J9)
The auxiliary connector provides TTL open collector faults for the modulator and demodulator. A
TTL input for external transmit carrier mute. An Analog demodulator Q and I constellation
monitor. A programmable DC voltage monitor for the demodulators AGC.
(9-Pin Connector) The auxiliary connection is a 9-pin female D connector (J9) located on the rear
panel of the modem. Screw locks are provided for mechanical security on the mating connector.
Pin # Signal Function Name
1 Chassis Ground GND
2 Spare
3 Demod Q channel Q
4 AGC Monitor test point AGC
5 Tx TTL fault TxFLT
6 Spare
7 Ext carrier off EXT
8 Demod I channel I
9 Rx TTL fault RxFLT