FLIR PT-602CZ Installation Manual page 26

2 Basic Operation and Configuration
example, the sky is generally very cold, so if the ROI excludes the sky it may add more contrast to the
rest of the image. A pull-down list offers some convenient options.
When Custom is selected, a handle is shown
in the center of the screen.
Drag the handle to set
the size of the ROI box.
Drag the ROI box over
the portion of the scene
that will control the AGC.
IR > AGC
The AGC parameters affect how the overall IR video image appears. Using the AGC button on the Live
Video page (refer to
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 Save Settings button at the bottom of the page to keep the settings after a power
cycle or select the Factory Defaults 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.
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).
• 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.
• 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.
427-0038-00-12 Version 110
Toggle Automatic Gain Control (AGC), pg.
March 2018
23), toggle through five AGC algorithms.
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