Table 4-2. 'P1 | Alarms' Connector Pinouts - Comtech EF Data CDM-710 Installation And Operation Manual

CDM-710/L Broadcast Satellite Modem
Rear Panel Connectors

Table 4-2. 'P1 | Alarms' Connector Pinouts

Pin #
8 Rx Traffic (De-energized, Faulted) (See notes)
15 Rx Traffic (Energized, No Fault)
7 Rx Traffic
14 Tx Traffic (De-energized, Faulted) (See notes)
6 Tx Traffic (Energized, No Fault)
13 Tx Traffic
5 Unit Fault (De-energized, Faulted) (See notes)
12 Unit Fault (Energized, No Fault)
4 Unit Fault
11 Rx I Channel (Constellation Monitor)
3 Rx Q Channel (Constellation Monitor)
10 No Connection
2 AGC Voltage (Rx signal level, 0-10 volts)
9 Ext Carrier Off (TTL Lo = Mute, Open = Tx)
1 Ground
1:N (CRS-300/710) and 1:1 Mode (CRS-170A, CRS-180)
Pin #
8 Summary Relay NC (De-energized, Faulted)
15 Summary Relay NO (Energized, No Fault)
7 Summary Relay COM (See notes)
14 Clock Detect
6 Aux Tx Enable
13 No Connection
5 Fused -12 VDC Output (160 mA max)
12 Fused +12 VDC Output (160 mA max)
4 Online
11 Serial Clock
3 Serial Data
10 Receive Serial Data – auxiliary channel
2 Transmit Serial Data – auxiliary channel
9 Ext Carrier Off (TTL Lo = Mute, Open = Tx)
1 Ground
1) The relays have low voltage contacts with transient suppressors
across each pin to ground. The Summary Relay combines Tx, Rx,
and Unit Faults into a single relay.
2) The maximum working voltage is 18VDC or 13V AC. The maximum
current rating is 1 Amp DC or 0.5 Amp AC.
Normal Mode
Description
Description
4–12
MN/CDM710.IOM
Revision 12
Name Direction
Rx-NC I/O
Rx-NO I/O
Rx-COM I/O
Tx-NC I/O
Tx-NO I/O
Tx-COM I/O
Unit-NC I/O
Unit-NO I/O
Unit-Com I/O
Rx-I O
Rx-Q O
NC NC
AGC O
EXT-OFF I
GND Gnd
Name Direction
PR-NC I/O
PR-NO I/O
PR-COM I/O
Clk Det I
Red_Out_4 O
NC NC
-12VDC O
+12VDC O
Red_In_2 I
Red_Out_1 O
Red_Out_2 O
Red_In_3 I
Red_Out_3 O
Red_In_1 I
GND Gnd