SDM-300L3 Satellite Modem
Revision 1
Connector Pinouts
MN/SDM300L3.IOM
3–3
Note:
The European EMC Directive (EN55022, EN50082-1) requires using properly shielded
cables for DATA I/O. These cables must be double-shielded from end-to-end, ensuring a
continuous ground shield.
3.2 Connector Description
3.2.1
Remote Connector and Pinouts (J6)
The remote connector is a 9-pin subminiature female 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 EIA-232 or EIA-484.
Refer to Table 3-2 for pinout information.
Table 3-2. Remote Connector and Pinouts (J6
)
Pinout
EIA-232
EIA-485
Pin #
Name
Pin #
Name
(2-Wire)
Name
(4-Wire)
1 1
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
*For 2-Wire Operation:
•
Only two wires are required.
•
Tie pins 4 and 8 together (both +).
•
Tie pins 5 and 9 together (both -).
