If the applied signal is clipped, digital oscilloscopes cannot accurately
reconstruct the signal. Other oscilloscopes do not always give you an
indication that the applied signal is clipped, especially if any filters are also
turned on. This oscilloscope has a feature that gives you an indication that
the data is clipped by not filtering the clipped portion of the waveform. If
Interpolate is turned on, connected dots is used instead of interpolation of
the clipped data. The following two pages show some examples of clipped
waveforms.
Figure 3-5 shows a signal that is not clipped. Figure 3-6 shows the same
signal when it is clipped. Notice that connect the dots is used instead of
interpolation.
When filters are turned on, like bandwidth limit, it is even more difficult to
determine if the applied signal is clipped. Figure 3-7 shows the same signal
as figure 3-5, (a signal that is not clipped) and the bandwidth limit filter is
turned on.. Figure 3-8 shows the same signal, except that it is now clipped
and the bandwidth limit filter is turned on.
Acquisition Menu
Interpolate
3–9
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