5 esc (db-9f), 3 utility connections group, 1 remote control (db-9m) – Comtech EF Data CDM-625 User Manual
Page 82
CDM-625 Advanced Satellite Modem
Revision 15
Rear Panel Connectors and Pinouts
MN-CDM625
3–12
3.2.2.5 ESC (DB-9F)
The ESC (Engineering Service Channel) port is a 9-pin Type ‘D’ female
connector.
Table 3-10. ESC Connector Pinouts
Pin #
(R-L)
Asynchronous
Synchronous
1
Ground
Ground
6
RS-485 Tx Data B in
–
2
RS-232 Rx Data out
RS-232 Rx Data out
7
RS-485 Tx Data A in
–
3
RS-232 Tx Data in
RS-232 Tx Data in
8
RS-485 Rx Data B out
–
4
–
RS-232 Rx Clock out
9
RS-485 Rx Data A out
–
5
–
RS-232 Tx Clock out
3.2.3 Utility Connections Group
3.2.3.1 Remote Control (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.
Table 3-11. Remote Control Connector Pinouts
Pin #
(L-R)
Description
Direction
1
Ground
–
6
EIA-485 Receive Data ‘B’ *
In
2
EIA-232 Transmit Data
Out
7
EIA-485 Receive Data ‘A’ *
In
3
EIA-232 Receive Data
In
8
EIA-485 Transmit Data ‘B’ *
Out
4
Reserved – Do Not Use
–
9
EIA-485 Transmit Data ‘A’ *
Out
5
Ground
–
*Use for EIA-485 2-wire operation