Table of Contents
Advertisement
Appendix B: Troubleshooting
Question
Power supply indicator
is OFF
Abnormal video data
Irregular horizontal
grain or beating video
images
All indicators are off
Video indicator of
optical receiver flashes
Video indicator of
optical transmitter OFF
Snowflakes emerge
in output video of
receiver
Abnormal data
20
Answer or Resolution
Check if the power plug is loose and the fuse wire of
chassis.
Check if optical output power is normal and in the
range of receiving sensitivity.
Incorrect video input synchronization, check if the
grounding electrical level is equal, especially the
grounding electrical level of the power of optical
transceiver and input & output device; check the
connection of video lines and if the input signal
complies with standard.
Check if the power adapter works normally, if
modules completed, insert the right slots.
Receiver not receiving the right optical signal; check if
the link loss rate is normal. The rolling diameter is too
short(less than 20CM); impurities on ceramic interface
(gently clean it with alcoholic cotton).
Optical transceiver not receiving video signal, need to
check the video input.
Bit error in transmission; check if the link loss is too
much, The rolling diameter shall not be too short (not
less than 20CM), unstable transmission because of
operating the temperature of environment is too high.
Check is data protocol is right (if using 232
transmitting 485, etc.), if the transmitting direction
is right (forward, backward or bidirectional), if
connecting right (data is positive or negative,
transmitting or receiving), if the data input is right.
Advertisement
Table of Contents
