SHARX SECURITY SCNC3904, Руководство пользователя

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Page 32
Night Vision Settings
The SCNC3904 and other models with infrared (IR) night vision have several
settings to adjust your preferred night vision.
The IR LEDs can be set to “On” or “Off”. In addition, the “Automatic” setting
uses a light sensor on the front of the camera to check ambient light levels to
turn on the IR LEDs only at night.
Similarly, “Black & White Mode” can be “On”, “Off”, or “Auto”. The default
setting is “Auto” so that you have the highest sensitivity at night. Sometimes
you have better picture quality with Black&White Mode “Off”. It’s worth a try.
The “Moonlight mode” setting tries to boost available light by reducing the
frame rate. As with the IR LEDs there are settings for “On”, “Off”, or “Auto”.
If you are using IR cameras to look through a window, you should set IR LEDs
to “Off”. Otherwise the IR LEDs would reflect off the window glass and the
glare would make everything almost invisible. Moonlight mode on “Auto”
should help if there is at least some available light.
All our current camera models have a feature that allows beautiful daytime
colors as well as night vision in total darkness. During the day, an optical “IR
cut filter” removes all infrared light to make colors look vivid and natural. At
night, the filter moves out of the optical path to enable IR night vision. You can
actually hear a click when this filter moves. This happens both during power-
up and when light levels change between day and night. The click is normal.
If you are using the SCNC3904 to look through a window, you may want to
experiment with the IR filter in the automatic position even though IR LEDs are
set off. Combined with automatic moonlight and automatic black & white
mode this makes the best use of available street lighting.
For special applications there is also a setting that allows you to keep the IR
filter fixed either in the “on” or “off” position. The normal factory default is
automatic and this is recommended.
IMPORTANT: For best IR night vision on outdoor cameras please refer to
page 33 about the sunshade position.
Clean lens cover glass also helps extend
the range and reduces fogginess.