Dahua OTS102T, Руководство пользователя, Страница: 10 / 12

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4 FAQ
Problem Possible Cause Solution
Video signal blanking Fiber cable, video line
connection are abnormal.
Properly connect fiber cable, and
may judge according to device
indicator.
Video line is too long. Use better cable, and make 75-5
line > 100m
Sending end and receiving end
are connected inversely.
Make sure sending end is
OTS102T and receiving end is
OTS102R.
RS485 does not work
Connecting terminal’s positive
and negative ends are
connected inversely.
Switch them.