Metrohm NIRS XDS Process Analyzer – DirectLight/NonContact - Manual (Page 103)

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This dialog box is displayed.
Next a scan is taken (on the reference) and this
box is displayed. This takes about 20-30 seconds.
Wavelength Linearization is performed in two
sections, each of which takes about 15 seconds.
Following Wavelength Linearization, the user is
asked to select a standard file. This is located on
the computer in the Vision directory, as shown.
Select the file “TSS3Wxxx” and click on “Open”.
Vision prompts the user to position the probes in
the fixture as shown.
To avoid stray light reaching the probes, the center
area may be covered to avoid light infiltration. The
cover shown is for this purpose.