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C1648M (4/05) 25
Video Present LED (Continued)
Red on receiver Incoming video signal is
not present on the
channel.
Optical signal is not
being received from the
transmitter. Carrier
Detect LED is also red.
Refer to the Carrier
Detect LED
troubleshooting section
below.
Video source is not
powered on.
Check power connection
to the video source.
Video source is not
connected to the
transmitter.
Check BNC connections.
Coaxial cable connected
to the transmitter is
defective.
Replace cable.
Carrier Detect LED
Green on transmitter The optical signal is
being received from the
receiver.
— No action required.
Green on receiver The optical signal is
being received from the
transmitter.
— No action required.
Red on transmitter The optical signal is not
being received from the
receiver.
Receiver is not powered
on.
Check power
connections. Replace
power supply if
necessary.
Fiber optic cable is not
connected.
Check fiber optic
connections.
Fiber optic cable
connectors are dirty or
are damaged.
Clean, polish, or replace
fiber optic cable
connectors as
necessary.
Fiber optic cable is
defective.
Replace cable.
(Continued on next page)
Table C.
Troubleshooting with Front-Panel Indicators (Continued)
Indicator Color Meaning Possible Cause Corrective Action