CDM-625 Advanced Satellite Modem
Revision 1
Rear Panel Connector Pinouts
MN-0000036 (Ref MN/CDM625.IOM)
3.3.5
ESC Connector, DB-9F
The ESC (
E
ngineering
S
ervice
C
hannel) port is a 9-pin Type ‘D’ female
connector. Refer to
Table 3-9
for pin assignments.
Table 3-9. ESC Connector Pin Assignments
Pin #
Asynchronous
Synchronous
1 Ground
Ground
2
RS-232 Rx Data out
RS-232 Rx Data out
3
RS-232 Tx Data in
RS-232 Tx Data in
4
-
RS-232 Rx Clock out
5
-
RS-232 Tx Clock out
6
RS-485 Tx Data B in
-
7
RS-485 Tx Data A in
-
8
RS-485 Rx Data B out
-
9
RS-485 Rx Data A out
-
3.4
Utility Connections
3.4.1
Remote Control Interface Connector, DB-9M
The Remote Control Interface is a 9-pin Type ‘D’ male connector. It is
intended for connection to an M&C computer or terminal device, and is user
selectable for either EIA-232 or EIA-485. Refer to
Table 3-10
for pin
assignments.
Table 3-10. Remote Control 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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