Thermo Electron Nicolet 380, Руководство пользователя, Страница: 93 / 135

How can I subtract a spectrum from another spectrum?
Use Subtract in the Process menu whenever you want to subtract one
spectrum from another. Subtract is commonly used to remove
spectral features of solvent residues or pure components from the
spectrum of a mixture of compounds.
Select the spectrum from which you want to subtract spectral
features; this is the sample spectrum. Then hold down the Control
key and select the spectrum with the features you want to subtract
from the sample spectrum; this is the reference spectrum.
Note Subtract is available only when two spectra are selected.
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Choose Subtract from the Process menu. The difference spectrum is
displayed full scale in the bottom pane. This spectrum is the result of
subtracting the reference spectrum from the sample spectrum using
the subtraction factor shown to the left of the result. If you are not
satisfied with the subtraction result, you can change the subtraction
factor.
In OMNIC Help Topics find “spectrum” in the Index and go to
“Subtracting spectra.”
Customizing OMNIC How do I customize OMNIC software?
You can use Options in the Edit menu to set options that determine
how the software operates. You can also customize the menus and
the toolbar using Edit Menu and Edit Toolbar in the Edit menu. Use
Save Configuration As in the File menu to save the customized
settings in a configuration file. You can then open the file later to
reset OMNIC to your preferences in one step.
Nicolet 380 User’s Guide
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