19. INFRARED CAMERA BEHAVIOR
19
Infrared Camera Behavior
19.1 Infrared Camera Stabilization
The GIS 320 thermal camera sensor needs to be cooled using internal cryogenic cooler. After each start of the
camera you will be prompted by the firmware to turn on the cryogenic cooler of the camera and to wait until the
camera is cooled. This process might take several minutes. During this time you should cover the camera lens
with the original lens cap.
If you are using the camera on the drone it is highly recommended to connect the camera to an external battery
outside of the main batteries powering the drone. Otherwise after the batteries powering the drone are drained
the camera could shut down unexpectedly and this could shorten the lifespan of the camera.
It is possible to turn on the camera and cool it down before the drone flight to extend the battery life that powers
the camera.
19.2 Non‐Uniformity Correction (NUC)
Infrared cameras need to be periodically calibrated in order to get reasonable measurement accuracy. This
process is called Non‐uniformity correction (NUC) or shutter calibration.
The GIS 320 camera does not have internal shutter and the NUC needs to be performed manually. To perform the
NUC please cover the lens with the original plastic cap and navigate to MENU ‐> CAPTURE ‐> IMAGE CORRECTION
(NUC). The lens must be covered with the plastic cap before every NUC.
After the start and during the cooling process the cap needs to be covering the lens at all times. During the
cooling process the camera performs NUC. After the cooling is complete you can remove the cap from the lens
of the camera.
If the NUC is performed without the covering cap on the lens the quality of the thermal picture might be bad
and the picture might contain many artifacts.
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Revision 210427 EN, 27
th
Apr, 2021
All pictures are only for illustration.
Real values may vary.
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