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HAPSITE ER Operating Manual
Figure 10-43 Performance Window
Low Mass . . . . . . . . . . . . . . . . . . . . The lowest mass in the range of masses
being considered.
Deconvolution Window . . . . . . . . . The number of adjacent peaks subtracted
from the deconvoluted peak.
Minimum Match Factor . . . . . . . . . The threshold net match factor value for an
identification to be reported. Values at or
above 80 are good matches, 70-79 are fair
and less than 70 is poor. For most cases, a
match factor of 70 is the minimum that should
be used if identification rather than detection
is desired.
High Mass . . . . . . . . . . . . . . . . . . . . The highest mass in the range being
considered.
Sensitivity . . . . . . . . . . . . . . . . . . . Sets the sensitivity for the method. If the
sensitivity is set too low, an increase in noise
and broad peaks may result. If the sensitivity
is set too high, it increases the risk of false
positives.
Resolution. . . . . . . . . . . . . . . . . . . . The resolution can be set to high, medium or
low. The default setting is medium. This
setting affects peak shape. Higher resolution
results in sharper peaks, while lower
resolution results in broader ones.
If Analyze Region is selected, see Figure 10-44, AMDIS will only search in the
selected scan range. When Analyze Region is off (i.e., unchecked), the software
will search the entire range specified by Low Mass and High Mass.
Figure 10-44 Analyze Region
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