Calibrating a PSD Spectrum
If you want the software to compare observed masses in all segment spectra included in the .DAT file to reference masses in the selected calibration reference file:
1.Click Match.
If a mass within the tolerance of any of the masses listed in the calibration reference file is found in any spectrum in the .DAT file, the match is displayed in the Calibration Mass Peak Selection window.
CAUTION
Use the Match function with care. Before using, ensure |
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that all peaks in all segments are correctly peak |
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detected. The Match function examines the complete |
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mass range in all segments in the .DAT file. |
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NOTE: The entire mass range of each spectrum in the | |||
.DAT file is checked, not just the mass range included | |||
in the composite spectrum, and even if the spectrum is |
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not currently displayed in the Spectrum window. |
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For comparison, the difference between the reference mass in the calibration reference file and the observed peak mass is displayed.
Hint: You can sort the list of matches by clicking on the column header buttons (see Figure
If no matches are found, an error message is displayed.
2.To delete a match from the list, select the mass and click Delete Selected Match.
To clear the entire list, click Delete Entire List.
3.Complete the calibration as described in “Solving and plotting” on page
Data Explorer™ Software User’s Guide |