Fault connector and pinouts (j7), 2 fault connector and pinouts (j7) – Comtech EF Data C5 User Manual
Page 114

Installation
C5/K1/K3 Integrated Satellite Terminal System
3–18
Rev. 0
3.4.2
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. Form contact; ratings 1A maximum at 24 VDC, 0.5A at 120 VAC. Screw
locks are provided for mechanical security on the mating connector. Refer to Table 3-3 for
pinout information.
Table 3-3. Fault Connector and Pinouts (J7)
Pin #
Signal Function
Name
1
Common equipment is not faulted
NO
2
COM
3
Common equipment is faulted
NC
4
TX is not faulted
NO
5
COM
6
TX is faulted
NC
7
RX is not faulted
NO
8
COM
9
RX is faulted
NC
Refer to Chapter 6 for a discussion of monitored faults. To obtain a system summary
fault, connect all the Form C contacts in parallel.