Dahua SD22 Series, Руководство по установке, Страница: 7 / 16

1
1 Installation Preparation
1.1 Basic Requirements

All installation and operation here should conform to your local electrical safety codes, fire
protection regulations and relevant regulations.

Make sure if the application scenarios of speed dome conforms to the installation
requirements. Please contact your local retailer if you have any confusion.

Please use the product according to the operating environment.

Please keep the original packing material well after opening the package, which is used to
pack speed dome and send it back for repair in case problems happen.
1.2 Installation Check

Please make sure the installation environment has enough space to install the speed dome
and its corresponding mounting components.

Please make sure the ceiling and wall can sustain 8X weight of the speed dome and its
mounting components.

Please make sure the wall is thick enough to install expansion bolts (Users need to
purchase expansion bolts separately).

It needs to guarantee that the mounting height has to be more than 6m if the speed dome is
laser speed dome.
1.3 Cable Preparation
Please select video cable and lowest specification requirement of video coaxial cable according
to the transmission distance.
1.3.1 Cable Lowest Specification Requirement

75 ohm impedance.

Full cable with copper conductor.

95% knitted copper shield.
International Model Max Transmission Distance
(Ft\M)
RG59/U 750Ft/229M
RG6/U 1,000Ft/305M
RG11/U 1,500Ft/457M
Note
The above can be applied to analog speed dome and network speed dome.
International Model Max Transmission Distance
(M\Ft)
SYV-75-3
720P(25fps\30fps)
：
500M/1640Ft
720P(50fps\60fps)
：
300M/984Ft
1080P(25fps\30fps): 300M/984Ft
Note
The above can be applied to HDCVI speed dome.
1.3.2 Select Needed Power Supply Cable According to Transmission Distance
Refer to appendix
Ⅱ
for DC 12V power supply device.