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HAPSITE ER Operating Manual
9.4.2 Outputs
Base Peak Gain (BPG)
BPG influences sensitivity. (See Figure 9-16.)
ER ideal setting is 0.5 (range is 0.4 to 0.6)
Smart Plus ideal setting is 1.0 (range is 0.8 to 2.0)
Figure 9-16 Base Peak Gain
Ion Percentages
Actual Percentages are listed in the Mass Calibration table, outlined in red. The
range of acceptable values is presented in the 4 adjacent columns, outlined in
Figure 9-17 in blue.
Example: The percentage of mass 50, first row, should fall within 0.5 to 2.5%, and
must fall within 0.4 to 3.0%, for the mass spec to be properly calibrated.
Figure 9-17 Ion Percentages
Boxes shaded with red, like those shown in Figure 9-17, indicate that the actual
percentage is outside that range for that fragment (row). For example, in the third
row of the table above for mass 69, the actual percentage is 6.37 when it should
fall above 8.00. Here, mass 69 requires adjustment of the Resolution and/or Ion
Energy to correct the Actual Percentage.
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