LeCroy Digital Oscilloscopes, Manual

Page: 176 / 213

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LeCroy’s SMART Trigger types are good at
capturing rare phenomena (
see the
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). The Exclusion Trigger does this by
triggering on all events different from the
expected waveform — such as glitches and
intermittent out-of-tolerance waveforms. In this
way, the oscilloscope itself contributes to
increased knowledge of exceptional waveforms,
leading to their complete description. Here’s how.
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Connect to CH 2 a waveform whose multiple glitches, because
of their low duty cycle, do not show up when the Edge Trigger
or Persistence display is used.
67(3
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Reset: press , the top and
simultaneously.
Then press to turn off Trace 1.
Press , then the corresponding to select
from the “Coupling” menu the coupling matching the
source’s impedance — 50
Ω
.