Data Sheet

Thermal and Visible Camera Operation
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Cross-hairs are visible when ‘Center Spot’ is selected from the ‘Measurement’
menu (Measurement mode). Cross-hairs are also visible in the ‘Custom
IGM™ mode’ when ‘Radiometry’ is selected in the ‘Custom IGM™’ menu in
the ‘Settings’ menu (Settings/Custom IGM™).
8.2 Automatic/Lock Temperature Scaling
Note: For best results, allow a warm-up period of 3-5 minutes before using this
feature.
The Auto/Lock Scale option allows the color palette range to be adjusted to
suit a given application. For example, when viewing both cold and hot objects
in the same frame, the auto-scaling (default mode) will cause the palette to
‘stretch’, as to fit the whole range of temperatures. However, this can cause
smaller temperature variations to go undetected, as the difference between
two colors might increase from 1° to 10°. In this case, the user may choose to
lock the scale with only the cold or medium-temperature objects in the frame.
This would cause the hot objects to saturate, but will provide more detail to
the colder objects of interest.
Figure 8.2 Figure on left is ‘auto-scaled’ while the figure on right is ‘scale locked’
If you wish to narrow the range of color and limit it to colors near the cold tem-
perature image, set the scale mode to ‘Lock’ with no hot objects in the frame.
To lock the scale, press Select
to access the Main Menu, scroll to the Tem-
perature Scale mode
, press Select, and scroll to the ‘Lock’ mode ;
press Select to confirm and to exit the menu. Some experimentation and fine-
tuning may be required to obtain the best possible contrast.
For additional programming details see Section 5.3 Temperature Scale menu.
#NAS100005; r. AG/62027/62027; en-US
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