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C1680M (1/06) 31
Troubleshooting
LED indicators on the FT8301A transmitter (refer to Figure 2) allow you to monitor signal status and
laser status. Table A provides information about the indicators and associated troubleshooting
guidelines.
NOTE: For troubleshooting information indicated by the LEDs on the associated receiver, refer to the
manual supplied with the receiver.
Table A. Troubleshooting with Front-Panel Indicators
Indicator Color Meaning Possible Cause Corrective Action
Video Present LED
Green Incoming video signal
is present on the
channel.
– No action required.
Red Incoming video signal
is not present on the
channel.
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.
Optic Fault LED
Not lit Laser is operating
properly.
– No action required.
Flashing red Laser has shut down. Transmitter is
operating in extreme
conditions; for
example, operating
temperature is below
or above recommended
range as stated in the
Specifications section.
Ensure that transmitter
operates according to
operating conditions stated in
the Specifications section,
and then cycle the power. If
problem persists, contact
Product Support.