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User’s Manual
38
3.3.17 IR FUNCTION (Removable IR Blocking)
The IR blocking filter enables the PTZ camera to capture a clear image at night time
or in very dark lighting conditions. During the day, the IR blocking filter is fitted to
block the infrared light and ensure a clear image; at night, the IR blocking filter is
removed to catch the available infrared rays to view images in black and white. On
the
23× model, the user can view colour images when the IR function is activated.
Refer to the description to operate the removable IR blocking filter.
18x 26x Model :
• AUTO
The internal circuit will automatically decide when to remove the IR blocking
filter based on the lighting conditions calculated by the internal algorithm.
• ON
Select this option to remove the IR blocking filter.
23x Model:
• AUTO
The internal circuit will automatically decide when to remove the IR blocking
filter based on the image brightness level.
THRESHOLD
The PTZ camera will remove the filter immediately when the threshold value
is reached. The threshold options are <LOW>, <MID> and <HI>. A <LOW>
threshold indicates a higher sensitivity and can improve the reliability of the
lens.
IR COLOUR
When the IR function is enabled, the video output can be programmed as
colour or B/W.
• ON
Select this option to remove the IR blocking filter.
IR FUNCTION
THRESHOLD LOW
IR COLOUR
COLOUR