GW Instek APS-1102 Control Software User Manual - Manual (Page 50)

APS-1102 Control Software User Manual
6-8
6.8 Compression and Extension of Waveform - 2
This section explains how to create a trapezoidal wave by extending and clipping a triangle wave, as
a sample of vertically contracting/extending a waveform.
Step 1: Click the button at the top left of the screen.
A sine wave is selected in the initial status.
Click the
button to the right of [Function], click [Triangle] from the displayed
list.
Click the All Page OK
button to return to the waveform display screen.
Step 2: Click the button at the top left of the screen. The same result can be obtained when
[Tool] - [Compress/Decompress] is selected.
The screen titled [ARB - Compress/Decompress] appears.
Step 3: Change the setting in the number area to the right of [Max.(X)] from [32767] to
[100000] and press the Enter key.
Change the setting in the number area to the right of [Min.(N)] from [-32767] to
[-100000] and press the
Enter key.
The triangle wave is vertically extended, clipped and changed to a trapezoidal wave
on the waveform display screen.
If the waveform is hidden behind the contracting/extension screen and difficult to see,
move the screen.
Step 4: Click the OK button to return to the waveform display screen.
Explanation 1: It is also possible to vertically contract or move the waveform by specifying
the maximum and minimum numerical values at step 4.
If the positive and negative full scales are exceeded as a result of extension or
move, the waveform is clipped to the positive and negative full scales.
Explanation 2: It is possible to contract/extract part of a waveform by selecting the part on
the waveform display screen with Markers A and B in advance.
Explanation 3: If the waveform has not reached the positive and negative full scales, the
waveform can be extended to the maximum amplitude by clicking the
Fit Amplitude or Fit Peak-Peak button.
Explanation 4: The vertically reversed waveform can be obtained by setting [-100000] as
the maximum value and [100000] as the maximum value at step 3.
Explanation 5: Though the contraction/extraction ratio is specified with [Max/Min] in this
example, [Amp/Off] can also be used to specify this ratio.
Click
(option button) to the left of [ Amp/Off(O)] making it
(selected status). The result same as in this example can be obtained by
setting [Amplitude] to [200000] and [DC Offset] to [0].
Explanation 6: Though the triangle wave is clipped to create a trapezoidal wave in this
example, it is possible to generate the trapezoidal wave more easily by