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2.6 Audio and video input and output connections
2.6.1 Video input connections
There is no video input connection.
Insure the vidicon signal stable and credible
The vidicon should be installed in the appropriate location where is away from backlighting and low
illumination or adopts the better backlighting and low illumination compensation.
The ground and power supply of the vidicon and the DVR should be shared and stable.
2.6.2 Video output connections and options
The video output is divided into PAL/NTSC BNC(1.0V
P-P
,75Ω) and VGA output(selective
configuration).
When replace the monitor by the computer display, there are some issues to notice
1Do not stay in the turn-on state for a long time.
2Keep the computer display normal working by demagnetizing regularly.
3Stay away from the electro magnetic Interference.
TV is not a credible replacement as a video output. It demands reducing the use time and control the
power supply and the interference introduced by the nearby equipments strictly. The creepage of low
quality TV can lead to the damage of other equipments.
2.6.3Audio signal input
Audio port is BNC connection.
The input impedance is high so the tone arm must be active.
The audio signal line should be firm and away from the electro magnetic Interference and connected
credible which avoid false and joint welding and oxidation. The high voltage current should be avoided
especially.
2.6.4Audio signal output
Commonly the output parameter of DVR audio signal is greater than 200mv 1KΩ(BNC) which can
connect the low impedance earphone and active sound box or other audio output equipments through
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