Product specifications

DMD2050E Universal Satellite Modem External Connections
MN-DMD2050E Revision 2 5–10
5.3.9 Monitor and Control Connectors J20, J21
Label
Description
Connector Type
REMOTE J20 Remote Monitor and Control Port (RS-485 or RS-232) 9-pin Female D
ETHERNET J21 Ethernet Monitor and Control Port Female RJ-45
Table 5-7. Pinouts for J20 REMOTE Port (RS-485 or RS-232) 9-pin Female D Connector
Pin No.
Signal Name
Signal
Direction
1 Transmit Data RS-485 (+) TX-485-B Output
2 Transmit Data RS-232 TXD-232 Output
3 Receive Data RS-232 RXD-232 Input
4 NC NC ---
5 Ground GND ---
6 Transmit Data RS-485 (–) TX-485-A Output
7 NC No Connect ---
8 Receive Data RS-485 (+) RX-485-B/CTS Input
9 Receive Data RS-485 (–) RX-485-A Input