
39
Figure 3-24 Dialog box of spectra arithmetic for WL Scan
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Note
Arithmetic can only be performed between the two spectra with the same data pattern
4)
Calculate spectrum area
Click “Calculate spectrum area” button, the window as shown in Figure 3-25 appears.
Enter start wavelength and end wavelength, and click “Calc. Area” to get the result. S1
represents the area of the spectrum below X axis. S2 represents the area of the spectrum above
X axis. S3 equals one plus one. Average means that (positive area + negative area)/wavelength
range or time scan range.