Comtech EF Data SNM-1000 - Manual (Page 41)

SNM-1000 Node Control Modem Revision 3
Installation MN/SNM1000.IOM
2–9
2.3.5 Alarms Connector and Pinouts (J10)
The alarms connector provides Form C contact closures for alarm reporting. The two Form
C summary fault contacts are Modulator and Demodulator.
The alarms connection is a 9-pin female D connector (J10) located on the rear panel of the
modem. Screw locks are provided for mechanical security on the mating connector. Refer to
Table 2-5 for pinout information.
Table 2-5. Alarms Connector and Pinouts (J10)
Pin # Signal Function Name
1 Alarm 1 is faulted NO
2 COM
3 Alarm 1 is not faulted NC
4 Alarm 2 is faulted NO
5 COM
6 Alarm 2 is not faulted NC
7 Alarm 3 is faulted NO
8 COM
9 Alarm 3 is not faulted NC
• Alarm 1 = Not used
• Alarm 2 = TX
• Alarm 3 = RX