GW Instek APS-1102 Control Software User Manual - Manual (Page 80)

7 Arbitrary Waveform Editing
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Delete control points
Click Delete button to delete control points being selected at that time.
There is no way to restore control points after delete operation. Caution is required for this function.
Delete all control points
Click Delete All button to delete all control points being set at that time.
There is no way to restore control points after all delete operation. Great caution is required for this
function.
7.9.2 Execute Interpolation
After the range is selected and the control point is set, execute the interpolation. There are the following
three types of interpolation:
 Linear interpolation: interpolates using straight line between control points
 Spline interpolation: interpolates using smoothed curve between control points
 Continuous spline interpolation: interpolates with curved line so that the line forms an unified
shape also with the waveforms outside the selected range
To execute linear interpolation, click Linear button, or press Alt + L.
To execute spline interpolation, click Spline button, or press Alt + S.
To execute continuous spline interpolation, click Continuous Spline button.
When a part of the waveform is selected as the range, interpolation is performed by interpolating the
both ends of the range and the control points within the range.
When entire waveform is selected, continuous spline interpolation interpolates so that the waveforms
would be concatenated smoothly when repeated. In linear or spline interpolation, the first and last value
are different resulting in the waveform discontinuous when repeated.
If that exceeds +/

full scale is set as the result of interpolation, the waveform is clipped at +/

full
scale.
After executing interpolation, click OK button to return to the waveform display screen.