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Result:
Calibration tab.
5.
Click OK.
Note:
The calibration wizard automatically sets the current calibration
file when it finishes.
Removing a calibration file
When a calibration file is created using the Calibration wizard, the file
appears in the Tune window and is used in all subsequent acquisitions. You
can, however, remove the calibation file to select a different calibration file for
another acquisition.
To remove a calibration file:
1.
In the Tune window, click the Calibration tab.
2.
In the Calibration tab, click Remove Calibration.
Result:
(Uncal.cal).
Dynamic External Calibration Temperature
Compensation
Dynamic external calibration (DXC™) is a method of compensating for mass
drift caused by temperature fluctuations. It is not suitable for accurate mass
work, so it used only in the absence of a suitable lock mass.
To compensate for changes in room temperature, DXC shifts the mass by a
specified amount in ppm/degree. Typical values for drift compensation are
40-80 ppm/degree.
Setting the DXC drift value
To set the drift value for DXC:
1.
Acquire data from a reference sample such as heptacosa without using
DXC, lock mass, or a calibration file.
2.
In the Spectrum window, view the data.
5-16
Calibration
The calibration filename and path appear separately on the
The calibration file is replaced with an uncalibrated file
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Table of Contents
Troubleshooting
