Fault (J7) - Comtech EF Data SDM-9000 Installation And Operation Manual

Installation

2.4.7 Fault (J7)

The fault connector is used to provide Form C contact closures for fault reporting. The
three Form C summary fault contacts are:
•
•
•
Refer to Chapter 4 for a discussion of faults monitored. To obtain a system summary
fault, connect all the Form C contacts in parallel
The fault interface connection is a 9-pin female D connector located on the rear panel of
the modem. Screw locks are provided for mechanical security on the mating connector.
Common equipment is OK
Common
Common equipment is faulted
Transmit is OK
Common
Transmit is faulted
Receive is OK
Common
Receive is faulted
Note: A connection between the common (COM) and normally open (NO) contacts
indicates no fault.
2–8
Transmit faults
Receive faults
Common equipment faults
Signal Function Name Pin #
NO 1
COM 2
NC 3
NO 4
COM 5
NC 6
NO 7
COM 8
NC 9
SDM-9000 Satellite Modem
Rev. 4