OPHIR vega User Manual page 36

"Changing", then the color of the bargraph and the digital
readout changes as a function of percentage of full scale.
For example, if the reading is less than 30% of full scale, it
will be displayed green. Between 30% and 60% it will be
displayed black or white. Between 60% and 90% it will be
displayed yellow and above 90% of full scale it will be
displayed red.
These are the default cutoff values. They are fully
configurable by the user, thereby allowing him to use the
colors of the bargarph display as a type of pass/fail
mechanism.
Figure 3.6
Bargraph Style set to Changing (full scale is 3.0µW)
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