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As shown below, the window of ions ejected also depends on mass. A single
mass can only be ejected at low mass values. If a single high mass value is
entered in the table, a range of ions will be ejected.
Autoscale Waveform
Under default operation (Autoscale = ON), the SIS waveform amplitude is
automatically scaled as a function of the frequency components and storage rf
voltage selected.
NOTE: The amplitude of the waveform should be optimized for each Saturn
GC/MS system. The method described in Tutorials, How to Calibrate SIS, has
been found to be adequate for tuning the amplitude in most Saturn GC/MS
systems. However, you may also manually increase or decrease the waveform
amplitude if you prefer.
To manually specify the waveform amplitude, deselect (uncheck) Autoscale. The
field for Waveform Amplitude appears active.
Enter the desired Waveform Amplitude in volts.
Range: 0 <
amplitude < 60.00 volts. Default = 15.00 volts.
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