Installation Preparation; Basic Requirements; Safety Check; Cable Requirements - Dahua SD42C Series Installation Manual

1 Installation Preparation

1.1 Basic Requirements


All installation and operation here should conform to your local electrical safety codes, fire
prevention laws and some related regulations.

Check if all the components are included according to the packing list.

Make sure if the application scene of the speed dome conforms to the installation
requirements. Please contact your dealer if you have any questions.

Please use the product according to the operating environment.

1.2 Safety Check


Make sure the installation site has enough space to hold the product and its mounting
components.

Please make sure the ceiling or 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
separately).

It needs to guarantee the installation height shall be more than 6m if it is the laser speed
dome.

1.3 Cable Requirements

1.3.1 Video Cable Requirements


75 ohm.

Full cable with copper conductor.

95% knitted copper shield.
Please refer to Appendix Ⅱ for RS485 communication cable information.

International Model
RG59/U
RG6/U
RG11/U
Note
The above can be applied to analog speed dome and network speed dome
International Mode
SYV-75-3
Note
The above can be applied to HDCVI speed dome

1.3.2 Power Supply Cable Requirements

Refer to "Appendix Ⅲ Relationship Table Between AC 24V Wire Diameter and Transmission

Distance" for AC 24V power supply device.
Max Transmission Distance
(Ft\M)
750Ft (229M)
1,000Ft (305M)
1,500Ft (457M)
Max Transmission Distance
(M\Ft)
720P（25fps\30fps)：500M/1640Ft
720P（50fps\60fps)：300M/984Ft
1080P（25fps\30fps)：300M/984Ft
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