GW Instek APS-1102 Control Software User Manual - Manual (Page 87)

APS-1102A Control Software User Manual
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Expand selection to fit
Click the Expand All button to expand the selection that is already selected by the markers to the entire
waveform data. For example, the actual data collected by the digital oscilloscope usually does not
represent an exact one cycle. In this case, you can use this feature to clip one cycle.
Notes
Note that when the expansion rate is too high, the distortion may occur in the waveform.
7.11.2 Compression/Expansion along Vertical Axis
Because the compression/expansion operation affects only the selected range by markers, you must set
the selection by using markers in the waveform display section ( 7.5.3) before you compress/expand
along the vertical axis.
To set the compression/expansion along the vertical axis, you use the items in the [Y-axis] on the
Compression/Expansion screen.
Compression/expansion using maximum/minimum value
When [Max/Min] (option button) is selected ( ), the maximum value and the minimum value in the
selected range specified by the markers are displayed on the right of [Max] and [Min], respectively.
When you enter the maximum/minimum value for the target in the respective display section after
compression/expansion and press ENTER key, the waveform in the display waveform section will be
changed.
You can also flip the waveform by setting the maximum value smaller than the minimum value.
When you are satisfied with the generated waveform, click OK button.
To return to the waveform display screen without performing compression/expansion, click Cancel
button.
Compression/expansion using amplitude/offset
When [Amplitude/Offset] (option button) is selected ( ), amplitude value and offset value in the
selection selected by the markers is displayed on the right of [Amplitude] and [Offset], respectively.
The following shows the relationship between amplitude/offset and maximum/minimum value.
amplitude = (width from maximum value to minimum value), offset = (center of maximum value
and minimum value)
maximum value = offset + (amplitude / 2), minimum value = offset

(amplitude / 2)
You can also flip the waveform by setting amplitude to a negative value.
When you are satisfied with the generated waveform, click OK button.
To return to the waveform display screen without performing compression/expansion, click Cancel
button.