Ranger HRC™ operator´s manual – Optimizing the IR Image
180 Publ. No. TM 614 006 699 Rev B – ENGLISH (EN) – Oct 30. 2008
12.2.7.3 Adjustment in Manual mode
In Manual mode, both level and span are adjusted manually. Frequent
adjustments and ne-tuning are needed to achieve a good image quality.
Adjusting image in Manual mode
Step Action
1 Select Setup/IR menu to open the IR Camera menu system.
2 Select Image/Adjust Image….
Select
Auto and press the LEFT or RIGHT navigation button to do an auto adjustment of
the image, which is a good starting point.
3 Select Level and use the LEFT/RIGHT navigation buttons to move the center of the span.
4 Select Span and use the LEFT/RIGHT navigation buttons to decrease/increase the width
of the span.
5 Press the ENTER button to conrm.
6 Press the CANCEL button to exit the IR Camera menu system.
12.2.8 Color Distribution
There are two Color Distribution modes; Linear and Histogram.
In Linear mode, the colors are distributed linearly from the darkest
to the brightest pixel in the image.
In Histogram mode, the colors are distributed based on the contents
of the image.
The Histogram mode normally gives the best image, but for small details
the Linear mode may be better. The Linear mode also gives a more intui-
tive perception of the temperature contents.
NOTE: The most suitable color distribution setting depends on many factors. Toggle be-
tween Histogram and Linear to see which mode suits the current situation best.
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