Audio Interface Connector (P4A); Remote Control Interface Connector (P4B); Table 5-4. Audio Interface Connector Pin Assignments; Table 5-5. Remote Control Interface Connector Pin Assignments - Comtech EF Data CDM-600L Installation And Operation Manual

CDM-600L Satellite Modem
Connector Pinouts
5.4

Audio 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 5-4 for pin assignments.
Pin #
1
6
2
7
8
4
9
5
3
5.5

Remote 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 5-5 for 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 RS-232 or RS-485 .

Table 5-5. Remote Control Interface Connector Pin Assignments

Pin #
1
2
3
4
5
6
7
8
9
* Use for 2-wire RS-485 operation

Table 5-4. Audio Interface Connector Pin Assignments

Signal Function
TX Audio 1 +
TX Audio 1 -
RX Audio 1 +
RX Audio 1 -
TX Audio 2 +
TX Audio 2 -
RX Audio 2 +
RX Audio 2 -
Common
Ground
RS-232 TX Data
RS-232 RX Data
Reserved - do not connect to this pin
Ground
RS-485 RX Data B
RS-485 RX Data A
RS-485 TX Data B
RS-485 TX Data A
Description
*
*
5–5
Revision 2
MN/CDM600L.IOM
Direction
In
In
Out
Out
In
In
Out
Out
Direction
Out
In
In
In
Out
Out