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HAPSITE ER Operating Manual
Window Expand Factor . . . . . . . . . This option multiplies the retention time of the
peak by the Window Expand Factor to give
a period of time by which the search window
will be expanded. For example, if the peak
retention time is 10 minutes and the Window
Expand Factor is set to its default setting of
0.05, the 10 minute retention time will be
multiplied by the 0.05 Window Expand
Factor to equal 30 seconds. Then, 30
seconds is added to the Search Window. If
the default value of the Search Window is
20 seconds, adding 30 seconds from the
Window Expand Factor to the Search
Window would increase the search range to
50 seconds.
Min. Width . . . . . . . . . . . . . . . . . . . . This value is the minimum number of scans
per peak, which designates the area
measurement for peak integration. Any
peaks with fewer scans than this value will be
disregarded by the software. Decreasing this
number will result in the software accepting
broader peaks.
Min. Fit. . . . . . . . . . . . . . . . . . . . . . . This compares the mass intensities of the
compound to those saved in the library.
Reasonable values depend on the selectivity
of the calibration, but typically 0.5 to 0.9 is
used. A higher Min. Fit number is more
discriminative.
Peak Resolution (dx) . . . . . . . . . . . This number indicates the minimum number
of scans between two peaks. It is used to
determine whether a peak should be
considered a single peak or if the peak
should be split into two separate peaks.
Max Width . . . . . . . . . . . . . . . . . . . . This value is the maximum number of scans
per peak, which designates the area
measurement for peak integration. Any
peaks with more scans than this value will be
disregarded by the software. Increasing this
number will result in the software accepting
broader peaks.
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