INFICON HAPSITE ER Chemical Identification System - Manual (Page 371)

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HAPSITE ER Operating Manual
Dwell . . . . . . . . . . . . . . . . . . . . . . . . This is the amount of time the Mass
Spectrometer will sample data at each
sampling point. The dwell can be set from
100 µs - 5,000 µs. 400 µs is recommended.
Increasing the Dwell decreases the
detection limit.
Lead In. . . . . . . . . . . . . . . . . . . . . . . This determines the number of points the
Mass Spectrometer will skip prior to scanning
the desired mass peak. Best practice is to set
the Lead In to at least a 1000 µs delay prior
to collecting data. The delay is based on
Lead In multiplied by the Dwell.
NOTE: The Mass Width, Extra, Dwell and Lead In values for each newly
entered Mass are inherited from the value in the row above the new
entry.
NOTE: To automatically fill any column, click in the desired cell and press
Ctrl+D. This automatically fills "down", with that cell’s value, to the end
of the column.