YOKOGAWA WT500 User Manual page 202

7.6 Vertically Zooming and Shifting Waveforms
Explanation
7-10
Zoom (Vertical only)
Each displayed waveform (voltage or current) can be scaled. You can select one of the
following zoom factors:
0.1, 0.2, 0.25, 0.4, 0.5, 0.75, 0.8, 1, 1.14, 1.25, 1.33, 1.41, 1.5, 1.6, 1.77, 2, 2.28, 2.66,
2.83, 3.2, 3.54, 4, 5, 8, 10, 12.5, 16, 20, 25, 40, 50, or 100
Shifting a Waveform Position (Vertically)
You can vertically shift the displayed position of a waveform. This is useful when you
want to view the relationship between voltage and current waveforms, or when the
section of the waveform that you want to view does not fit into the display frame.
• The waveform position can be set to a value from 0.000 to ±130.000%.
• When the zoom factor is set to 1, a value of 100% corresponds to half the height of
the waveform display (which is three or six times the measurement range when the
crest factor is set to 3 or 6, respectively). The upper and lower vertical display limits of
the screen are 100% and –100%.
100%
–100%
• As shown in the figure below, when the zoom factor is set to a value other than 1, the
upper and lower display limits of the screen do not correspond to three or six times the
measurement range (or to ±100%) when the crest factor is set to 3 or 6, respectively.
You must take the zoom factor into account when setting a waveform's position. The
following figure is an example of the display when the crest factor is set to 3.
300 Vpk
(100%)
150 Vpk
–150 Vpk
–300 Vpk
(–100%)
Note
When you want to zoom in on part of a waveform, we recommend that you take the steps
below.
1. Set the zoom factor to 1.
2. Following the instructions in this section for shifting a waveform's vertical position, shift the
part of the waveform that you want to view to the center of the display.
3. Set the vertical zoom factor.
Position moved
by 50%
Position moved
by –50%
300 Vpk
(100%)
255 Vpk
150 Vpk
Position moved
by –25%
–75 Vpk
Range displayed -150 Vpk
on the screen
–300 Vpk
(–100%)
IM 760201-01E