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,
explosive substances and etc.
The camera and the DVR should have the same grounding to ensure the normal operation of the
camera.
Guarantee stability and reliability of the transmission lineBTTTB
Please use high quality, sound shielded BNC. Please select suitable BNC model according to the
transmission distance.
If the distance is too long, you should use twisted pair cable, and you can add video compensation
devices or use optical fiber to ensure video quality.
You should keep the video signal away from the strong electromagnetic interference, especially
the high tension current.
Keep connection lugs in well contactBTTTB
The signal line and shielded wire should be fixed firmly and in well connection. Avoid dry joint, lap
welding and oxidation.BTTTB
3.5.2 Audio Input
Due to high impedance of audio input, please use active sound pick-up.
Audio transmission is similar to video transmission. Try to avoid interference, dry joint, loose
contact and it shall be away from high tension current.
3.5.3 Audio/Video Input Switch Cable
Please use the following audio/video input cable if your camera port is BNC.
Please refer to Figure 3-5 for 4-pin aviation port cable information.
Figure 3-5
Please refer to the following sheet for detailed information.
Switch cable color and
definition
DC power male socket. External is
negative and internal is positive.
（Camera power）
12V external camera power
DC power male socket. External is
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