1. Automatic Phase/Peak Selection
In automatic peak selection the peak (Peak Amplitude
) is defined as the maximum voltage value of a Phase (Peaks can lie at Sample Points only, NOT at intermediate positions between them). If there is more than one sample point of equal maximum value the mid-value is selected (or the value of equal maximum value to the left of the mid-value if there are an even-number of such values).2. Manual Phase/Peak Selection
In manual peak selection the peak is selected by the position of the cursor
and can be interpolated at positions intermediate between sample points (unlike
in Automatic Phase/Peak Selection
where peaks cannot lie at points intermediate between Sample
Points). Interpolation of peaks in manual peak selection is undertaken
using a Cubic Spline Interpolation
algorithm.