Comtech EF Data CDM-550T - Manual (Page 35)

CDM-550T Satellite Modem Revision 3
Rear Panel Connector Pinouts MN/CDM550T.IOM
5.3 Alarms Connector, DB-15M
Table 5-2. Alarms Connector, 15-pin Type ‘D’ Male
Pin Description
1 Ground
2
Receive AGC voltage
3 Receive Q sample (for constellation display)
4 Unit Fault Relay - Common
5 Unit Fault Relay - Normally Open
6 Transmit Traffic Relay - Normally Closed
7 Receive Traffic Relay - Common
8 Receive Traffic Relay - Normally Open
9 External Carrier Off input
10 Not Used
11 Receive I sample (for constellation display)
12 Unit Fault Relay - Normally Closed
13 Transmit Traffic Relay - Common
14 Transmit Traffic Relay - Normally Open
15 Receive Traffic Relay - Normally Closed
Note: ‘Normally Open’ refers to the NON-FAIL state
5.4 Remote Control Connector, DB-9M
Table 5-3. Remote Control Connector, 9-pin Type ‘D’ Male
Pin Description
1 Ground
2
RS-232 Transmit Data (Out)
3 RS-232 Receive Data (In)
4 Reserved
5 Ground
6
RS-485 Receive Data B (In)
7 RS-485 Receive Data A (In)
8 RS-485 Transmit Data B (Out)
9 RS-485 Transmit Data A (Out)
5–3