3.0
INSTALLATION
This section describes how to connect to the twisted pair interface
and the serial interface. This section also describes procedures to
reverse the cover of the unit in order to mount the RJ-45 ports on the
front of the unit .
3.1 REVERSING THE COVER
The cover of the Balun Rack can be reversed in order to mount the
RJ-45 ports on the front of the unit, flush with the mounting ears. To
remove the cover of the unit, remove the eight screws on the sides of
the unit, lift the cover straight up, and re-attach the cover with the RJ-45
ports on the front of the unit.
3.2
CONNECTING THE 75 OHM BNC OR 1.6/5.6 COAX PORTS
The 75 Ohm BNC or 1.6/5.6 coax ports on the front of the Balun
Rack are labeled “TX” (Transmit Data Intput) and “RX” (Receive Data
Output). Simply connect the G.703 lines as follows:
G.703 Network Model 464RC & 466RC
Signal
Coax Connectors
Receive
RX
Transmit
TX
The numbers on each coax pair correspond to the RJ-45 ports on
the rear of the unit.
3
3.3
CONNECTING THE 120 OHM RJ-45 PORTS
The 120 Ohm balanced pairs can be accessed either by the RJ-45
ports or the 64 pin AMP Champ connector. Because RJ-45 ports and
the Amp Champ connections are in parallel, only one type of
connection should be used at a time.
3.3.1 Connecting the RJ-45 Ports
The number on each RJ-45 port corresponds to the BNC pair
numbers on the front of the unit. The pin configuration of the 120 Ohm
twisted pair RJ-45 port is shown below:
4
RJ-45 Jack
Pin No./Signal
1 - Transmit Data Out
2 - Transmit Data Out
3 - no connection
4 - Receive Data In
5 - Receive Data In
6 - no connection
7 - no connection
8 - no connection
Figure 2. Model 464RC/466RC front panel
Figure 3. Model 464RC/466RC rear panel.
Remove screws from sides of unit.
