IR Intelligent Speed Dome Camera User Manual
- 19 -
Appendix
Appendix I: Lightning and Surge Protection
This product is adopted the protection circuit which is composed of the gas discharge tube and
TVS diode. It can effectively prevent the damage of equipment by transient lightning under 3.0 kV,
surge and other kinds of pulse signal. But, for outdoor installation, we should do the necessary
protective measure on the premise of guarantee the electrical safety according to the actual
situation.
1. Signal transmission lines must keep at least 50 meters with the high voltage equipment or high
voltage cable.
2. You shall choose to wire under the eave when you wire outside.
3. For empty area, you must wire through the way of sealing steel pipe buried, and also the steel
pipe need to be earthed in one-point. Wiring overhead is absolutely forbidden.
4. In strong thunderstorms or high induction voltage region (e.g., high voltage transformer
substation), It must be taken measures to add extra high power lightning protection equipment and
install lightning rod or other measures
5.Lightning protection of outdoor installation and wiring and grounding design must be combined
with the building lightning protection requirements into consideration, as well as conform to the
requirements of relevant national standards and industry standards
6. The way of equipotential grounding is necessary for the system. Grounding device must meet
requirements of the system anti-interference and electrical safety, and it cannot null line short or
mixed wire with strong power grid. System separate grounding, grounding resistance is not greater
than 4
Ω
.
Appendix II: Basic Troubleshooting
Fault Phenomenon
Possible Cause
Solution
Power cable wrong to connection
Correct
Power supply was broken
Change
Power supply mismatches
change
When connect to
power supply, there is
no self-check, no
image, and the
indicator light doesn’t
light
Power cable poor contact
change
Address code and bound rate is wrong
Reset the address code and
bound rate
Protocol is wrong
correct
There is a self check
and has image, but
can’t control
RS485 polarity reversed or open
circuit
Check the connection
cable of the RS-485
Control cable poor contact
troubleshooting
Pan can tilt can’t be
control
Operation mistake
Power down and restart
