4xx Preliminary Generic User Guide. 4 Jan 06
8
Rear Panel
This is where the Data, 2 or 4 wire FSK and Power interface with the modem.
Dual Data Ports
The modem has single communications channel with
Dual RS232 Data Ports
(Main and Auxiliary).
The main Data Port’s DB9 connector connects to TMC or
the local controller while the Auxiliary RJ45 connector
can be used to bring in fiber or radio based
communications at a remote location into the main FSK
stream. The Aux Data Port can be switched to operate as
RS422/485 interface on appropriate model.
Copper (FSK)
This is where the modem connects to the private wire metallic
pairs, generally referred to as “copper”. The modem can operate
in either 2 wire or 4 wire duplex modes.
Note
that in 2 wire operation the cable pair is connected to the
“OUT” terminals on all modems.
Power Connections
The modem has a power cord with a standard AC Plug for 115VAC/60Hz,
alternatively the modem can be supplied with a 12DC Jack
and is powered by an external “brick” power supply.
Power
115VAC
60 Hz
200mA
Main
RS-232
Data Ports
Aux
Out
In
4W FSK
2W
Copper
Main
RS-232
Data Ports
Aux
Main
FSK
2/4
Wire
Aux
TXD
TXD
RXD
RXD
(DCE)
(DCE)
Out
In
4W FSK
2W
Copper
Power
115VAC
60 Hz
200mA