ChromeGate 3.3.2 Software Manual - KNAUER Advanced Scientific ...

212 ChromGate® PDA Option
Fig. 310
Similarity Table Properties
Enter the wavelength range and data point spacing (in nm) for similarity
calculations.
During analysis, it is possible that a portion of this wavelength
range will be outside the range of the acquired data. In that case, the
wavelength range will be truncated to the limits of the acquired data.
Spectral Library Definition
Fig. 311
This window appears when you select the File/Spectral Library/New
command and is used to define a spectral library to use with the PDA
option. In order to define a library, you must have the spectra to be added
saved on disk as spectra files (.spc) or you can create a library from the
spectra obtained during the current run.
Spectrum Data Source
Click on the arrow in this field to select either Current Data or Spectrum
File to be used to select the spectrum to be added to the library.
To add a spectrum from a spectrum file, the spectrum must have been
previously saved as a file with the .spc extension, typically, using the
Utilities /Save Trace function of the pop-up menu in the Spectrum pane.
If you chose to enter a spectrum from the current data file, a dialog will
appear where you must select the retention time at which you wish to
select the spectrum.
Component Name
Enter the chemical name or description of the spectrum. This field is used
for display and search pre-filter purposes.
Lambda Max From ... To
The wavelength range of the spectrum over which the software will
calculate the lambda (absorbance) max value is displayed in these
columns.