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IM 253710-01E
Functions
1
Zooming on the Waveform «For procedures, see section 9.8.»
Zooming vertically
The waveform of each channel can be expanded or reduced by the zoom factor which
can range from 0.1 to 100. The waveform is zoomed around the zero input line.
When the zoom factor is set to 2
300 Vpk
–300 Vpk
600 Vpk
–600 Vpk
Zero input line
Zooming horizontally
The selected waveforms can be expanded horizontally using two types of zoom
factors. This function is useful when the observation time is long and you wish to
observe a section of the waveform in detail.
• Zoom factor
When the display record length is larger than the number of displayable points, the
instrument performs P-P compression for each time segment. This function can be
used to lower the P-P compression rate so that each sampled data point in the
acquisition memory can be observed. The maximum zoom factor that can be
selected depends on the display record length and observation time. For example,
the maximum zoom factor is 10,000 times when the observation time is 20 s and
the display record length is 100 k-words. It is 100,000 times when the observation
time is 20 s and the display record length is 1 M-word or 4 M-words.
When the display record length is less than the number of displayed points or when
there are less than 500 points of sampled data on the time axis, such as when
using a high zoom factor, the display points can be interpolated as explained in an
earlier section.
• Types of zoom displays
The normal waveform that is not zoomed (Main waveform) and the zoomed
waveform (Z1 and Z2 waveforms) can be displayed in different combinations as
follows.
<Main>
<Main>
<Main>
<Z1>
<Z1>
<Z1> <Z2>
<Z2>
<Z2>
<Z1>
<Z2>
<Main>
1.6 Waveform Display
