User`s guide

Chapter 6 Acquiring Mass Spectra
6-30 PerSeptive Biosystems
6
5. Type in up to four Mass/Charge values for which to
calculate resolution.
6. For each Mass/Charge, enter the window for calculation
(± AMU).
NOTE: To label isotopes, set the ± AMU value low
enough to prevent the calculation windows for each
isotope peak from overlapping. If the calculation
windows overlap, only the highest peak is labeled. If
you set too low, the peak of interest may not be labeled.
However, if you set ± AMU too low, the peak of interest
may not appear in the window, and resolution will not
be calculated.
7. Click OK.
The peaks are labeled with (RXXXX) next to the peak
mass, where XXXX is the resolution (Figure 6-13). To
turn off resolution labels, see “Labeling spectrum
peaks” on page 6-28.
NOTE: If you do not apply peak detection parameters
after acquisition is complete, resolution labels are not
displayed.