If the peak finding routine mistakes a noisy peak as two peaks, or skips a peak, it will have one or more incorrect values in the dwell time values. You can go back and modify the command line used to find peaks. Go to the FindPeaks tab, click on any row of the Peaks listbox. This will reload the file and display the peaks on the image. If there was an incorrect peak, you can modify the command line and find peaks again. The most common remedies are to use the “h” command to limit the window over which peaks are fit; modify the threshold “t”; modify the relative peak “rp”. For noisy images, use smoothing “sm”. You can also modify the dwell times directly.
On the Calibrate tab, select any row, and press the Edit… button. This brings up the Edit Dwell Data window that lets you remove any value, or modify a value. The Locked check box, prevents the values from being overwritten the next time the CalcDwellTimes button is pressed. This allows you to modify the peak data, and find additional peaks without losing the information you manually edited.