User`s manual

16
Part IV: Appendix
Simple troubles and corresponding solutions
Problems Possible causes Soluition
Wrong connection of power cables Correct
Power supply damaged Replace
Not required power type Replace
No action, no picture, indicator
not on when power is switched
on.
Bad power cable connection Correct
Address or Baud rate setup wrong Set up again
Protocol setup wrong Set up again
Normal self-check and image
but out of control
RS485 bus connection wrong Check RS485 bus connection
Mechanical failure Repair
Camera inclined Reinstall
Abnormal self-check image
with motor noise
Power supply not enough Replace, placing the adaptor
nearby the unit is recommended
Bad connection of video Correct
Unstable image
Power supply not enough Replace
Power supply not enough
Replace, placing the adaptor
nearby the unit is recommended
Some dome camera out of
control or control delayed
Matching resistor is not equipped in the
dome camera at the farthest end
Install matching resistor in the
dome camera
Weak 485 signal; not enough power in
485 transformer
Replace with thicker
controlling cable. Replace
transformer