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HAPSITE ER Operating Manual
Adjusting Target Resolution
Adjustments are made in increments of 0.05. The number in the Actual Percentage
column is affected by the target resolution adjustments. This should fall between
the Max. Target and Min. Target. If the masses cannot be brought into range by
adjusting the Target Resolution, adjust the Ion Energies. (See Figure 9-20.)
Figure 9-20 Adjusting the Target Resolution
Ion Energies
Adjusting the Ion Energy adjusts the degree of electronic amplification applied to a
mass fragment, and thus the intensity (height) of the mass. Ion energies should be
adjusted after Target Resolutions. (See Figure 9-20.)
Ideal Values
Displays the ideal values for Ion energies for each of the 10 mass fragments.
Ion Energies should generally be in ascending order, Low for the smaller masses
and High for the larger masses.
Perform a Mass Alignment (press F5) after each change until OK is reported in the
Status column.
Table 9-1 Ideal Ion Energy values
Mass IE Low IE High
50 90 170
55 90 170
69 90 170
93 90 170
117 140 170
167 140 220
213 175 230
246 180 230
263 185 250
282 190 255
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