Balanced G.703 Interface Connector; Remote Control Interface Connector; Table 5-3. Balanced G.703 Interface Connector Pin Assignments; Table 5-4. Remote Control Interface Connector Pin Assignments - Comtech EF Data CDM-570 Installation And Operation Manual

CDM-570/570L Satellite Modem with Optional IP Module
Connector Pinouts
5.3

Balanced G.703 Interface Connector

The Balanced G.703 connection is a 15-pin female connector located on the rear panel of
the modem. Refer to Table 5-3 for pin assignments.

Table 5-3. Balanced G.703 Interface Connector Pin Assignments

Pin #
1
9
2
3
11
4
Pins 5, 6, 7, 8, 10, 12, 13, 14 and 15 are not used.
5.4

Remote Control Interface Connector

The remote control interface connection is a 9-pin male connector located on the rear
panel of the modem. Refer to Table 5-4 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 EIA-232 or EIA-485.

Table 5-4. Remote Control Interface Connector Pin Assignments

Pin #
1
2
3
4
5
6
7
8
9
* Use for 2-wire EIA-485 operation
Signal Function
Tx G.703 -
Tx G.703 +
Ground
Rx G.703 -
Rx G.703 +
Ground
Description
Ground
EIA-232 Transmit Data
EIA-232 Receive Data
Reserved - do not connect to this pin
Ground
EIA-485 Receive Data B *
EIA-485 Receive Data A *
EIA-485 Transmit Data B
EIA-485 Transmit Data A
Name
Tx G.703 In
Tx G.703 In
GND
Rx G.703 Out
Rx G.703 Out
GND
5–3
Revision 3
MN/CDM570L.IOM
Direction
In
In
Out
Out
Direction
Out
In
In
In
Out
Out