Chapter 8 Viewing Voyager PSD Data
NOTE: If the calibration reference file is stored on a network drive, an error message may display when you select the calibration file when performing a calibration. If an error message is displayed, copy the file to a local drive on your computer using Windows NT Explorer.
| 5. Enter Reference Matching Criteria: |
| • Minimum Intensity— Peaks must be above this |
| intensity to be considered a match. Select the unit |
| for Minimum Intensity, % Relative Intensity or |
| % Relative Area. |
| • Mass Tolerance— Peaks must be within this |
| tolerance of the theoretical mass to be considered |
| |
| a match. Select the unit, m/z or ppm. |
8 | 6. Select the Peak Weighting Factor. If the calibration |
includes more than two points, you can apply the following | |
weighting factors to fit points to the curve: | |
| • None— All peaks weighted equally |
| • Inverse Peak Width— Narrower peaks are |
| weighted more than broader peaks |
| |
| • Height— More intense peaks are weighted more |
| than less intense peaks |
| 7. Match observed peaks in the spectrum with reference |
| masses in the calibration reference file using one of the |
| following procedures: |
| • “Matching peaks automatically” described below |
|