Publicidad
The Adapters are pre-set to work in most applications
without additional configuration. The only parameter
that you can configure is the shield connection between
75-ohm coax and twisted-pair interfaces. The shield is
connected between the modular jack and the dual BNC
connectors. Removing the jumper breaks the
connection.
Coax BNC (75 Ohm)
TX Shield
TX Shield
The factory setting leaves both jumpers JP1 and JP2
in place, thus passing both shield connections through.
To break one or both of the shield connections, follow
these instructions.
1. Insert a small flat-blade screwdriver into the slot
on the side of the Adapter case and twist. The
case will pop open, exposing the PC board.
2. Holding the PC board with the modular jack
facing left, locate jumper JP1 toward the top of the
board and JP2 toward the bottom of the board.
G.703—120 HIGH SPEED ADAPTERS
3. Configuration
Table 3-1. Jumpers.
Jumper
JP1
JP2
RJ-45 (100 to 120 Ohm)
RJ-45 Shield, RJ-45 Pin 3
RJ-45 Shield, RJ-45 Pin 6
9
Publicidad
