Getting Started with Spectrum Software . 63
On the Setup Compare Parameters tab (Figure 42) you can define a limited wavelength
range of your spectrum to be compared with the reference spectrum or spectra, and apply
filters that try to eliminate differences in spectra that are not related to differences in the
sample, such as differences between instruments or environmental condition. Refer to the
Spectrum on-screen help for more information.
Figure 44 Setup Compare Parameters tab
NOTE: The Comparing Spectra tutorial worked example compares the results of a spectra
subtraction (using the Difference process) to a reference spectrum.
Search
The Search process is used to confirm the identity of an unknown sample by comparison with
a reference library or spectra. The results are displayed on the Search tab in the Viewing
Area (Figure 43).
Figure 45 Search tab
In the upper left quadrant the name of your source spectrum or spectra are displayed, with
the Search Best Hit. In this example the Best Hit was acetophenone. For each source
spectrum selected, all the results are displayed in the Search Hit list. If you want to select an
alternative Search Best Hit, you can click Accept as best hit.
The best hit spectra are displayed in a graph below the Source Spectra Search Results, in the
lower left quadrant of the Search tab.
NOTE: You can also use the Search process for a Mixture Search. Refer to the Spectrum
on-screen help for more information.
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