Building A Double 120-Ohm Terminator - AMX PLB-CF2 Instruction Manual

Figure 7
Connecting to a PLB-CLF
cardframe.
Note
Only one PHAST keypad can
be used per port, so home-
run each keypad.
8 Operation Instructions
For optimum performance, PHAST recommends the installation of a double 120-
ohm terminator in one of the RJ-45 jacks of the last device (or the only device) in a
chain of PhastLink devices.

Building a double 120-ohm terminator:

1.
Install a 120-ohm resistor (1/4-watt or larger) between pins 1 and 2 of an RJ-45
connector.
2.
Install a 120-ohm resistor (1/4-watt or larger) between pins 7 and 8 of the same
RJ-45 connector.
PHAST LCD keypads must connect directly to a PHAST Hub (or PHAST
Microphone Hub). Due to power requirements and/or the need for a separate
microphone line for each keypad, they cannot be daisy-chained to other LCD
keypads; they can, however be daisy chained with other PhastLink devices.
PLB-CF2 Two-Slot Mini Cardframe