Comtech EF Data CDM-IP 300L - Manual (Page 68)

CDM-IP 300L IP-Centric Satellite Modem Rev. 1
CD/CDMIP300L.IOM
41
2.3.3 R
EMOTE
C
ONNECTOR AND
P
INOUTS
The remote connector is a 9-pin subminiature male D connector (J6) located on the rear
panel of the modem. Screw locks are provided for mechanical security of the mating
connector.
The remote connector interfaces the M & C functions to a remote location. The remote
location can be an M&C computer located away from the modem, but attached via cable
to the remote connector. This DCE interface is user selectable for either RS-232 or RS-
485.
Table 14. Remote Connector and Pinouts
RS-232 RS-485
Pin # Name Pin # Name (2-Wire) Name (4-Wire)
1 1 GND GND
2 RD (RX) 2
3 TD (TX) 3
4 4* +RX/TX +TX
5 GND 5* -RX/TX -TX
6 DSR 6
7 RTS 7
8 CTS 8* +RX/TX +RX
9 9* -RX/TX -RX
Note: *For 2-Wire Operation:
1 Only two wires are required.
2 Tie pins 4 and 8 together (both +).
3 Tie pins 5 and 9 together (both -).
2.3.4 C
ONNECTOR
(J6)
J6 connector is not used at this time.