RS-232 Over Fiber and Alarm Connector
g
RS-232 Over Fiber port — To pass serial command signals to a receiver
(for serial control of a projector, for example), connect a host device to the
transmitter via the leftmost poles (Tx, Rx, and G) of this 5-pole captive screw
connector (see Wiring for RS-232 Over Fiber and Alarm Communication
on page 8 for wiring configurations).
Alarm port — For remote monitoring of the status of fiber optic link 2,
connect a custom or furnished monitoring device to the switcher via the
rightmost poles (1 and 2) of this 5-pole captive screw connector (see Wiring
for RS-232 Over Fiber and Alarm Communication on page 8).
NOTE: Pins 1 and 2 short within the switcher when link 2 does not detect any
connection.
Control Connectors
h
Contact closure connector — Connect a contact closure device (such as a simple
switch) to the 3.5 mm, 4-pole captive screw connector. The first three ports are used for
selecting inputs 1 through 3 when momentarily shorted to the ground pin (see Wiring
for Remote Contact Closure Communication on page 8).
i
RS-232 connector — Connect a host device to the 3.5 mm, 3-pole captive screw
connector for serial control of the switcher.
Power Connector
j
Power connector — Connect an external power supply to the 3.5 mm, 2-pole captive
screw connector (see Wiring the Power Supply on page 9).
ALARM
Tx Rx G 1 2
OVER FIBER
Tx Rx G 1 2
OVER FIBER
FOX T USW 203 Universal Switcher • Installation 6
