Axis BTA 2100D Manual del operador Pagina 174

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Segment Setpoints
Item Description
Scan Time
The duration of each scan (in seconds). Values from 0.10
to 5.00 seconds per scan. Below is displayed the number
of micro scans per scan for the selected mass range and
scan time.
Multiplier Offset
Multiplier offset (relative to 10
5
gain). Range 300 Volts.
Emission Current
Emission current may be set from 5 to 100 µA.
Count Threshold
The minimum number of intensity counts per sampling
interval required before a signal is recorded. Values from 0
to 1000 counts; it is typically set to 0 or 1 count.
Mass Defect
Mass defect is defined as the difference between the
nominal mass of an atom (or ion) and its exact mass.
Values from -300 mu per 100u to +300 mu per 100u can
be set.
Cal Gas
Click on box if Calibration gas is used in the Method
segment.
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