Comtech EF Data CDM-IP 300L - Manual (Page 69)

CDM-IP 300L IP-Centric Satellite Modem Rev. 1
CD/CDMIP300L.IOM
42
2.3.5 F
AULT
C
ONNECTOR AND
P
INOUTS
(J7)
The fault connector provides Form C contact closures for fault reporting. The three Form C
summary fault contacts, ratings 1 A maximum at 24 Vdc, 0.5 A at 120 Vac, are Modulator,
Demodulator, and Common Equipment.
The fault interface connection is a 9-pin subminiature female D connector (J7) located on
the rear panel of the modem. Screw locks are provided for mechanical security on the
mating connector.
Table 15. 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 Modulator is not faulted NO
5 COM
6 Modulator is faulted NC
7 Demodulator is not faulted NO
8 COM
9 Demodulator is faulted NC
Note:
A connection between the common (COM) and normally open (NO) contacts
indicates no fault.