HIKVISION DS-2DF5220S-DE4/Ww User Manual page 128

User Manual of Network Speed Dome
 Because the signal transmission media of fiber optical speed dome and network speed dome
are isolated from the control center, they must be grounded locally to protect dome against
damages.
 If the dome is installed in strong thunderstorm area, it must be grounded locally to release
lightening or suchlike high energy to protect dome against damages. Refer to the following
figure.
Power
Power supply board
Cement pole/wall
underground
Figure A.3.3 Lightening-protection Grounding in Cement Pole/Wall Installation
© Hikvision
Power
Video cable
Control line
1.5m
Power supply board
127
Display
Operating Center
GND
Keyboard
DVR
GND
UPS
GND
GND
1.5m underground