Comtech EF Data CDM-625A - Esc (Db-9 F); Remote Control (DB-9 M); Utility Connections Group

CDM-625A Advanced Satellite Modem MN-CDM625A
Rear Panel Connectors and Pinouts Revision 4
3–14
3.2.2.5 ESC (DB-9F)
The ESC (Engineering Service Channel) port is a 9-pin Type ‘D’ female
connector.
Table 3-9. ESC Connector Pinouts
(R>L)
Pin #
Asynchronous Synchronous
5
––
EIA-232 Tx Clock Out
9
EIA-485 Rx Data A Out
––
4
––
EIA-232 Rx Clock Out
8
EIA-485 Rx Data B Out
––
3
EIA-232 Tx Data In
EIA-232 Tx Data In
7 EIA-485 Tx Data A In ––
2 EIA-232 Rx Data Out EIA-232 Rx Data Out
6 EIA-485 Tx Data B In ––
1 Ground Ground
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 3-10. Remote Control Connector Pinouts
(L>R)
Pin #
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