5 esc (db-9f), 3 utility connections group, 1 remote control (db-9m) – Comtech EF Data CDM-625A User Manual
Page 98
CDM-625A Advanced Satellite Modem
MN-CDM625A
Rear Panel Connectors and Pinouts
Revision 3
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