Figure 7-4: Calculated Value - Fluke ThermoView TV30 Series User Manual

Clicking on the math symbol icon on the left side of the page opens the dialog for the calculated value.
Name
Value 1
Value 2
Operator
Example

Figure 7-4: Calculated Value

describes the Calculated Value via a name
defines the first operator for the calculation (e.g. Rect AOI)
defines the second operator for the calculation (e.g. Polygon AOI)
Defines the math function for the calculation of value 1 with value 2:
Subtraction or Delta (absolute substraction)
deletes the calculation.
The calculated value is the subtraction of Rect AOI and Polygon AOI
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