dallmeier DF4820HD-DN, Пусконаладка

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Commissioning DF4820HD-DN
NOTICE
For an outdoor use, the camera must be installed in a proper
weather-proof housing.
However, note that direct sunlight can cause extremely high tem -
peratures inside the housing.
In this case, it is absolutely necessary to use a ventilated, temper -
ature-controlled weather-proof metal housing and a sunshield,
where required.
In addition, a metal slide should be used if the camera is installed
in a (weather-proof) housing to ensure optimal heat dissipation.
Operation
• When using a separate power supply unit, interference caused by a ground
loop may occur in the analog video signal. In this case, use a video signal
transformer (balun) for galvanic (ground) isolation between the signal source
(camera) and the RG-59 cable.
• If the device or the cables connected to the device are located near sources
with strong radiation, the video image may be distorted.
• The device is equipped with automatic gain control (AGC). In low-light condi -
tions the image may be altered (e.g. noise). However, this is not a malfunction.
• The quality of the video image depends on the lighting conditions and the used
monitor.
• The accuracy of the automatic white balance (AWB) algorithm depends on the
used lighting. Mixed light (consisting of artificial light and daylight) may cause
color distortions (inaccurate color reproduction).
• Poor lighting can lead to an incorrect white balance.