Comtech EF Data C5 - 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.