Metrohm NIRS XDS MasterLab Analyzer - Manual (Page 74)

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It is easier to install the aperture when the
sample carriage is in the “Iris Position”.
The unit may be in this position from previous
work – if so, simply install the aperture.
If needed, use this menu command to move the
sample carriage to a backward position for easy
insertion of the aperture.
The tablet transmission reference is shown
installed at right. It is attached to the frame of
the sample carriage with a captive screw through
the black frame. It must be used for tablet
transmission work.
If previously working in reflectance, this was
removed and safely stored to prevent damage.
This may be difficult to install with the sample
carriage in the previous position. Follow the
directions to move the sample carriage to a more
convenient position.
From the menu bar, go to Configure, Tray. In the
Select Tray Dialog box, click on “Use Tray”.
The sample carriage will move through several
positions and will end up in the correct position
for installation of the tablet transmission
reference.
Vision runs the sample carriage through a
defined sequence of intermediate positions as a
means of verifying “home position” for each axis.
This is normal, and should be ignored. (The cover
is normally closed anyway.)