Installation Guide

Table Of Contents
4-2
Cameras must be installed in the protection area of the discharging rod, for example, you can place
the discharging rod 3 or 4 meters away from the camera.
Cable Protection
Route the cables carefully to protect them.
It is recommended to bury the cables with metal pipes covered, and ground the metal pipe properly.
Or you can use following method:
Use the metal pipes to cover the cables and route the pipes above the ground.
For the cables connected directly with the cameras and equipment room, bury the cables with
metal pipes covered. The cables buried need to be more than 15 m and the metal pipe must be
grounded properly. And install arrestor at the two end of the each cable.
Inner Protection
Choose an arrestor according to its regular value (maximum operating voltage, insert loss, data
transmission rate and so on).
Requirements for Signal Arrestor
1. The connection for the arrestor conforms to equipotential principle. There is a joint point for
grounding cables connection between arrestor and device. The cable between arrestor and joint
point must be shorter than the recommended value by the arrestor. If the arrestor does not
provide a recommended length, you can use the cables between 0.3 m and 0.5 m, and use the
grounding cable as short as possible.
Figure 4-1 Mounting Description
2. When the length of the cable between the arrestor and joint point does not meet the
connection requirements, you need to connect the device and arrestor as shown in the Figure
4-2.
Device OUT INSignal arrestor
Joint point for
grounding
Grounding cables
should be less than
0.3 m