
APS-1102A Control Software User Manual
Vertical compression/expansion
As an example of vertical compression/expansion of the waveform, we will generate a trapezoidal
waveform by expanding and clipping the triangle waveform.
Display [New Arbitrary Waveform Editing Panel].
In its initial state, a sine wave is selected.
Select [Triangle] from [Wave] combo box.
Click All-Page OK button to return to waveform display screen.
Click Compress/Expand button on Select Item Panel.
You can also click [Tool] - [Compress/Expand] to obtain the same result.
Select Item Panel is changed to [Compress/Expand Panel].
In the numeric area on the right of [Max], change [32767] to [100000], then press ENTER
key.
In the numeric area on the right of [Min], change [32767] to [100000], then press ENTER
key.
In the waveform display section, you can see that the triangle waveform is expanded vertically
and clipped, transforming to a trapezoidal waveform.
Click OK button to return to waveform display screen.
You can also use the maximum/minimum numeric values specified in the step 3 to
compress the waveform vertically or move the waveform up or down. If the +/ full scale
is exceeded as a result of the expansion or movement, the waveform will be clipped at the
+/ full scale point.
You can compress/expand only a part of a waveform by selecting that part of the
waveform using A marker (red) and B marker (blue) in the waveform display screen
beforehand.
If the +/ full scale is not reached by the waveform, you can expand the waveform to
maximum amplitude by clicking Expand with Fixed Offset button or Expand with
Offset Clear button.
If the maximum is set to [100000] and the minimum is set to [100000] in the step 3, the
waveform will be flipped.
While you used [Max/Min] to specify the compression/expansion rate in this example, you
can also use [Amplitude/Offset] to do so. Click
(option button) on the left of
[Amplitude/Offset] to turn it to (selected). Next, set [Amplitude] to [200000] and
[Offset] to 0 to obtain the same result as this example.
In this example, you generated the trapezoidal waveform by clipping the triangle
waveform. You can generate it more easily by setting [Transition] against the square
waveform.
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