Table 11-6. Local Eia-485 (4-Wire) To Remote Eia-232 - Comtech EF Data SDM-300L3 Installation And Operation Manual

SDM-300L3 Satellite Modem
Asynchronous Interface/AUPC
11.4.3.4 Configuration #4 (Local EIA-485 [4-Wire] to Remote EIA-232)
ASYNC TX and RX Type
ASYNC TX and RX Baud Rate
ASYNC TX and RX Length
ASYNC TX and RX Parity
ASYNC TX Stop
ASYNC TX and RX Type
ASYNC TX and RX Baud Rate
ASYNC TX and RX Length
ASYNC TX and RX Parity
ASYNC TX Stop
Remote Baud Rate
Parity
Address
The local end cable connects the 25-pin female ASYNC connector (on either the
breakout panel or the Y cable) to the EIA-485 (4-wire) remote terminal (WYSE or laptop
computer). The pinout of the local cable is listed in the following table.
The remote end cable connects the 25-pin female ASYNC connector (on either the
breakout panel or the Y cable) to the 9-pin female connector, J6, at the rear of the
modem. The pinout of the remote cable is listed in the following table.

Table 11-6. Local EIA-485 (4-Wire) to Remote EIA-232

#4. Local End Modem Settings for EIA-485 (4-Wire)
Utility Interface Menu
Configuration Interface Menu
#4. Remote End Modem Settings for EIA-232
Utility Interface Menu
Configuration Interface Menu
Utility System Menu
#4. Local End EIA-485 (4-Wire) Twisted Pair
9-Pin
Female Connector
TX+
TX-
RX+
RX-
#4. Remote End EIA-232
9-Pin
Male Connector
RX
TX
GND
EIA-485 (4-wire)
110 to 38400
7 bits
Even
2 bits
EIA-232
150 to 38400
7 bits
Even
2 bits
Equal to ASYNC TX and RX baud rate
Even
1 to 255
25-Pin
Male Connector
4 14 TX+
5 2 TX-
8 16 RX+
9 3 RX-
25-Pin
Male Connector
2 2 RX
3 3 TX
5 7 GND
11–17
Revision 1
MN/SDM300L3.IOM
(See A.4.6)
(See A.4.6)