User Guide

427-0075-01-12 Revision 140 October 2019 33
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Basic Operation and Configuration
IR > AGC
The AGC parameters affect how the overall IR video image appears. Using the AGC button on the
Live Video page (refer to ), toggle through five AGC
algorithms. The default algorithms are suitable for most installations, but each selection allows a
combination of further adjustments that may provide a more appealing image, depending on
personal preferences. Be aware that the settings that are optimal at one time may be less optimal a
short time later, since conditions such as weather and time of day affect the image and are
constantly changing.
Experiment with different AGC parameters to find the settings that work best for the particular
installation. Select button at the bottom of the page to keep the settings after a power
cycle or select the button to return the settings to default values.
• Brightness (ITT Mean) setting determines the temperature that is at the middle of the 256
“shades of gray” produced by the AGC. Positive values allow more detail in hotter scenes, while
negative values allow more detail in lower temperature scenes. Range is -4 to 4.
• Contrast (Max Gain) can be used to increase contrast, especially for scenes with little
temperature variation (it may also increase noise due to increased gain). Range is 12 to 24.
• Sharpness (DDE Gain) is used to enhance image details and/or suppress fixed pattern noise.
Positive values increase Sharpness, while negative values soften the image and filter fixed
pattern noise. A setting of 0 is neutral and will not have any effect. Range is -10 to 40.
• AGC Filter determines how quickly a scene will adjust when a hot object appears (or
disappears) within the AGC ROI. If set to a low value, when a hot object enters the ROI, the
AGC will adjust more slowly to the hot object, resulting in a more gradual transition. Range is 1
to 32.
Pan and Tilt
The azimuth and elevation angles are measured in degrees. The elevation angle is measured from
horizontal; negative values are down, positive values are up. The Azimuth angle is measured from
the front of the pan/tilt unit; negative values are counter-clockwise, positive values are clockwise.
To move the camera:
enter coordinates,
click Go to
Current camera
coordinates and
pan/tilt mode