JF TECH JRC-27F, Руководство пользователя

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16ch DVR:
2.6 Audio & Video input and output connections
2.6.1 video input
DVR video input port to the BNC input signal requirements: PAL / NTSC BNC (1.0VP-P,
75Ω).
Video signal should comply with national standards, a higher signal to noise ratio, low
distortion, low interference; image must be clear, invisible change, real and natural
color, brightness is appropriate.
Ensure stable and reliable camera signal:
Cameras should be installed in a suitable location, to avoid backlighting, low light
conditions, or the use of good results backlight compensation cameras, low-light
cameras.
Camera and DVR power supply should be common ground, and reliable, in order to
ensure the normal operation of the camera.
Ensure stable and reliable transmission line:
Using high-quality, shielded coaxial good video, and based on the transmission distance
to choose the right model. If the distance is too far, should be based on the specific
circumstances, the use of twisted pair, add video compensation equipment, fiber optic
transmission and other ways to ensure signal quality.
Video signal line should avoid strong electromagnetic interference to other equipment
and lines, especially should avoid high-voltage current string into.
Lugs ensure good contact:
Signal and shield lines should be firm, well-connected, avoid Weld, lap welding, to
avoid oxidation.
2.6.2 Select and connect the video output device
Video output is divided into PAL / NTSC BNC (1.0VP-P, 75Ω) output and VGA output
(VGA is optional)
Choose to use computer to replace the monitor should pay attention to the following
questions:
1. Do not keep long boot state to extend the life of the equipment;
2. regular degaussing, which will help maintain the normal operation of the display;
3. Away from strong electromagnetic interference devices.
Use TV as a video output device is an unreliable alternative. It also requires minimizing