Premier Mounts CDM-600 Audio Interface Connector P4A, Remote Control Interface Connector P4B

CDM-600 Satellite Modem	Revision 7
Connector Pinouts	MN/CDM600.IOM

5.5Audio Interface Connector (P4A)

The Audio interface connection is a 9-pin female D connector located on the rear panel of the modem. Refer to Table 5-5for pin assignments.

Table 5-5. Audio Interface Connector Pin Assignments

Pin #	Signal Function		Direction
1	Tx Audio 1 +		In
6	Tx Audio 1	-	In
2	Rx Audio 1 +		Out
7	Rx Audio 1 -		Out
8	Tx Audio 2	+	In
4	Tx Audio 2	-	In
9	Rx Audio 2 +		Out
5	Rx Audio 2 -		Out
3	Common

5.6Remote Control Interface Connector (P4B)

The remote control interface connection is a 9-pin male connector located on the rear panel of the modem. Refer to Table 5-6for pin assignments.The remote control port is intended for connection to an M&C computer, or terminal device. This interface is user selectable for either EIA-232 or EIA-485.

Table 5-6. Remote Control Interface Connector Pin Assignments

Pin #	Description		Direction
1	Ground
2	EIA-232 Transmit Data		Out
3	EIA-232 Receive Data		In
4	Reserved - do not connect to this pin
5	Ground
6	EIA-485 Receive Data B	*	In
7	EIA-485 Receive Data A	*	In
8	EIA-485 Transmit Data B		Out
9	EIA-485 Transmit Data A		Out

* Use for 2-wire EIA-485 operation

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