26
Appendix
Ⅲ
Exception Handling
Issue
Possible Reason
Solution
Cable harness is improperly
connected
Verify that the orientation of the
connector input
Input power voltage is too low Verify the voltage of the input power
After power is applied,
there is no action
(self-test)
and no video image.
Power supply does not work
Change a new power supply
Wrong communication
settings
Set the correct protocol, baud rate and
address of dome device
Self-test
is
normal, but dome
cannot
be
controlled.
Improper connection of
control cable (polarity)
Verify the polarity of the RS485 connection
as per the instruction manual
Mechanical obstruction
Verify and correct it
Camera module is not installed
correct
Correct
Noise
after
self-testing
Low power
Change the correct power supply
Low power
Check the power supply or make sure
the power input is AC 24V
Image is not
stable
Video cable is improperly
connected.
Verify the connection of the video cable
Camera is on manual focus
Change to auto focus
Image
is
blurring
The lens is dusted
Clean the lens
Power is too low
Change the AC 24V Power supply
Communication distance is
too long
Make sure the distance is in the
allowed range
RS485 cable is not properly
connected.
Make the RS485 is properly connected.
Controlling the dome is
not smooth
Too many domes connected
Make sure the connected dome is in the
allowed quantity