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Right mouse click on the apex scan of the 272 single ion chromatogram and
select Calculate Noise to generate the RMS signal-to-noise ratio (see Figure
5.5).
Figure 5.5
Note that the RMS signal-to-noise is calculated using 5-point Savitsky-Golay
smoothing. How to manually set these Chromatogram Plot Preferences from the
Chromatogram Plot and Noise tabs is shown in Figures 5.6, 5.7, and 5.8. Right
mouse click the chromatogram and select Chromatogram Plot Preferences…
(refer to Figure 5.6 and 5.7 and 5.8).
Summary of Contents for 4000 GCMS
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