Dahua XVR, User Manual

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HDD to the bottom bracket.
○
4 Connect the other end of the
HDD cable to the mainboard.
⑤
Connect the power cable to the
HDD.
⑥
Put the cover back and fix the
screws to secure firmly.
Important:
If the HDD amount is less than four, you do not need to install the HDD bracket.
When there is a bracket, please make sure the installation direction of HDDs is the same.
2.3.7 Rack Installation
The DVR occupies 1.5U/2U rack units of vertical rack space.
 Use twelve screws to fix the unit
 Please make sure the indoor temperature is below 35 ℃ (95°f).
 Please make sure there is 15cm (6 inches) space around the device to guarantee
sound ventilation.
 Please install from the bottom to the top.
 If there are more accessories connected in the rack, please take precaution
measures in case the rack power is overload.
2.4 Connecting Power Supply
Please check input voltage and device power button match or not.
We recommend you use UPS to guarantee steady operation, DVR life span, and other
peripheral equipments operation such as cameras.
2.5 Connecting Video Input and Output Devices
2.5.1 Connecting Video Input
The video input interface is BNC. The input video format includes: PAL/NTSC BNC
（ 1.0V
B
P- P
，
B
75Ω. ） .
The input video format: BNC （ 0.8VP-P ， 75Ω ） ,
The video signal should comply with your national standards.
The input video signal shall have high SNR, low distortion; low interference, natural color
and suitable lightness.
Guarantee the stability and reliability of the camera signal:
The camera shall be installed in a cool, dry place away from direct sunlight, inflammable,