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Full Scan EI Ionization Control: Use Ionization Control to set the
Automatic Gain Control (AGC) target, the total number of ions the system
will attempt to generate within the trap, using up to the Maximum ionization
time selected. A lower target reduces space charge effects on resolution,
while a higher target may improve quantitation. Click Customize to display
Ionization Time. If the Fixed Ionization Time box is checked, the AGC
adjustment of ionization time is replaced by the fixed ionization time
selected. Click Defaults to restore the default times for the segment Scan
Type, Ionization mode, and Scan Mode.
Full Scan EI –Internal EI Parameters: Use Internal EI Parameters to set
the filament emission current. Higher current leads to more ionization and
thus higher sensitivity, but may also lead to shorter filament lifetime.
Full Scan EI – Full Scan Parameters: Use Full Scan Parameters to select
the mass range for this segment. You can customize the mass range, RF
storage level, and ion time factor for each segment, to optimize the
sensitivity for selected compounds, or match the desired spectral
characteristics required for tuning with BFB or DFTPP.
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