Fault Connector And Pinouts (J7); Table 2-3. Fault Connector And Pinouts (J7) - Comtech EF Data SLM-3650 Installation And Operation Manual

SLM-3650 Satellite Modem
Installation
2.3.2

Fault Connector and Pinouts (J7)

The fault connector provides Form C contact closures for fault reporting. The three Form C
summary fault contacts are Modulator, Demodulator, and Common Equipment.
The fault interface connection is a 9-pin female D connector (J7) located on the rear panel
of the modem. Screw locks are provided for mechanical security on the mating connector.
Refer to Table 2-3 for pinout information.
Refer to Chapter 5 for a discussion of monitored faults. To obtain a system summary
fault, connect all the Form C contacts in parallel.
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Table 2-3. Fault Connector and Pinouts (J7)

Pin # Signal Function
1 Common equipment is not faulted
2
3 Common equipment is faulted
4 Modulator is not faulted
5
6 Modulator is faulted
7 Demodulator is not faulted
8
9 Demodulator is faulted
Note: A connection between the common (COM) and normally open (NO)
contacts indicates no fault.
2-7
Revision 3
MN/SLM3650.IOM
Name
NO
COM
NC
NO
COM
NC
NO
COM
NC