Thermonicolet Omnic Software User's Guide 6.1 (PDF) - Charles E ...

• Which regions were not blanked when you created the library.
• Which region of the sample spectrum you have displayed or selected in
the spectral window.
Use Blank in the Process menu to delete any peaks you want excluded, or just
include a region that doesn’t contain the peaks. When comparing a mixture
spectrum, include a region that contains peaks from one of the components.
4. Choose QC Compare from the Analyze menu.
The QC Compare window appears. At the bottom of the window a gauge shows
the progress of the comparison. The number of library spectra compared so far
is shown to the left of the total number of library spectra included in the
comparison. The name of the library being compared appears above the gauge.
To interrupt the comparison before it is complete, choose Stop. The results
found so far are shown, and the Stop button becomes the Resume button. To
continue the comparison, choose Resume. You can stop and resume the
search as many times as you like. If you don’t want to continue after stopping
the comparison, choose End.
When the comparison is finished, the limits of the selected spectral region (or
displayed region if no region is selected) are displayed in the lower-left corner
of the window. If you did not use the region tool or view finder to specify a
region to compare, the limits of the entire spectrum are displayed.
The sample spectrum and the library spectrum that best matches it are
displayed in panes in the upper portion of the window. You can drag the
horizontal bar that is below the panes down or up to allocate more or less
space for displaying the spectra. You can use the scroll bar to the right of the
panes to display any spectra that are out of view. These are the spectra in the
other compound types that best match the sample spectrum.
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