Metrohm NIRS XDS Process Analyzer – SingleFiber - Manual (Page 70)

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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 verify that the single fiber ends
are in position on the fixture.
To avoid stray light reaching the probes, the center area
may be covered to avoid light infiltration.