Metrohm NIRS XDS Interactance OptiProbe Analyzer - Manual (Page 64)

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Vision requests a “Standard File”. For
Photometric Test, use the RSSVxxxx.da file
stored in the Vision directory. This file was
created during IPV Setup. Current photometric
readings will be compared to that initial file.
Click on the RSSVxxxx.da file as shown. (The
serial number will be different, of course.)
Click “Open”.
Do not use the file on the standards mini-CD
for Photometric Test, as it will cause Vision to
return an error message.
Vision requests a tolerance file. The tolerance
file was loaded in the C:\Vision directory, and
is an “XDA” formatted file.
Select this file and click “Open”.
Note that tolerance files for Photometric Test
are numbered. The digits “04” refer to the
fourth version of this tolerance file. When new
XDS instruments are added, the tolerance file
number is incremented. Tolerances for a given
instrument do not change within the file,
however. (The file IPVXDS01.xda will provide
the same test tolerances as IPVXDS04.xda.)
Vision displays the wavelength regions for
test.
For reflectance instruments, these regions give
a good overall picture of instrument
performance and repeatability. The
wavelength areas are chosen in flat parts of
the standards spectra for stability.
For Number of Replicates, Enter “4” as in IPV
Setup.
Click on “OK”.
Vision will begin to take an instrument
reference scan, if the instrument is operating
in Reference Standardized mode. The red
progress bar at the bottom of the screen
indicates status.