TDS 500B, TDS 600B, & TDS 700A User Manual
3–143
Using Features for Advanced Applications
The TDS Oscilloscope provides powerful features for testing and digitally proces-
sing the waveforms you acquire. This section describes how to use the following
features:
Limit Testing — for testing the waveforms you acquire against a template
you create (on this page)
Waveform Math — for inverting, adding, subtracting, and multiplying of
waveforms (see page 3–148)
Fast Fourier Transforms — for displaying the frequency content of
waveforms (see page 3–150)
Waveform Differentiation — for displaying the derivative of a waveform
(see page 3–167)
Waveform Integration — for displaying the integral of a waveform (see
page 3–171)
NOTE. If InstaVu mode is on, the features listed above are not available; press
InstaVu on the front panel to toggle InstaVu mode off.
Limit Testing
The TDS Oscilloscope provides limit testing, which can automatically compare each
incoming or math waveform against a template waveform. You set an envelope of
limits around a waveform and the oscilloscope finds waveforms that fall outside
those limits. (See Figure 3–82.) When it finds such a waveform, the oscilloscope
can generate a hardcopy, ring a bell, and stop and wait for your input.
Figure 3–82: Comparing a Waveform to a Limit Template
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