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CDM-600 Satellite Modem Revision 7
Connector Pinouts MN/CDM600.IOM
5–5
5.7 IDR Backward Alarms Connector (P5A)
The IDR Alarm interface connection is a 15-pin female connector located on the rear
panel of the modem. Refer to Table 5-7 for pin assignments.
Table 5-7. IDR Alarm Interface Connector Pin Assignments
Pin # Signal Function Name
2
9
1
Backward Alarm 1 is active
Backward Alarm 1 is not active
BA-1-NO
BA-1-COM
BA-1-NC
10 TBD MON-A
4
11
3
Backward Alarm 2 is active
Backward Alarm 2 is not active
BA-2-NO
BA-2-COM
BA-2-NC
6
13
5
Backward Alarm 3 is active
Backward Alarm 3 is not active
BA-3-NO
BA-3-COM
BA-3-NC
14 TBD MON-B
8
15
7
Backward Alarm 4 is active
Backward Alarm 4 is not active
BA-4-NO
BA-4-COM
BA-4-NC
12 Ground GND
5.8 Unit Alarms (P5B)
Unit alarms are provided on a 15-pin male connector located on the rear panel of the
modem. Refer to Table 5-8 for pin assignments.
Table 5-8. Alarm Interface Connector Pin Assignments
Pin # Signal Function Name
8
15
7
Rx Traffic (De-energized, Faulted)
Rx Traffic (Energized, No Fault)
RX Traffic
RX-NC
RX-NO
RX-COM
14
6
13
Tx Traffic (De-energized, Faulted)
Tx Traffic (Energized, No Fault)
Tx Traffic
TX-NC
TX-NO
TX-COM
5
12
4
Unit Fault (De-energized, Faulted)
Unit Fault (Energized, No Fault)
Unit Fault
UNIT-NC
UNIT-NO
UNIT-COM
11
3
RX I Channel (Constellation monitor)
RX Q Channel (Constellation monitor)
RX-I
RX-Q
10 No Connection N/C
2 AGC Voltage (Rx signal level, 0 to 2.5 volts) AGC
9 EXT Carrier OFF EXT-OFF
1 Ground GND