Advanced FWHM editing
Entering new points manually
If you do not want to use HyperLab's visual calibration point adding facility, just want to enter predefined calibration points, press the (cursor down) key repeatedly, while you leave the last point's row, and a new, empty row automatically created. Type in the proper values, then press (cursor up) key to leave the edited calibration point row. If you want to enter a comple­tely new calibration, first remove all calibration points, then the add them one by one.
Modifying channel positions
To modify the channel position of a specific calibration point, you have two options: manual editing or borrowing.
To edit the value by hand, just click on the channel number value, and type the new number. To borrow, you should use the borrow button of the FWHM field.
Modifying FWHM value of an existing calibration point
FWHM values may also be modified by either manual editing, or by getting the exact fitted FWHM values from the active HyperLab spectrum. This may be required if you modified the fit of a peak, which is used for FWHM calibration. Manual editing may be initiated by simply clicking on an FWHM value and typing its new value in channels.
If you want to borrow a fitted peak width value from the current spectrum, click on the FWHM value, then on the ellipsis [...] button appearing beside the number.
The spectrum fitting window appears now. Click with the position getting tool on a peak.
The FWHM calibration editor will appear again, and the clicked peak's exact fitted peak width will be used as the FWHM value of the calibration point.
Should you want to cancel the borrowing process, press Esc key.
Please note that, after borrowing, the channel position of the FWHM point is also updated to the position of the fitted peak. This behavior is intentionally different from what you experience in the case of the energy calibration editor.
 
 
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