Teledyne LeCroy WaveSurfer MXs-B Getting Started Manual - Manual (Page 64)

WaveSurfer MXs-B Oscilloscopes
56 922172-00 Rev A
The hysteresis value is used to eliminate noise. A non-monotonicity is
detected only when its amplitude is greater than the hysteresis. Therefore,
when setting a hysteresis level, set a value that is greater than the
amplitude of the noise.
Runt Mode
This search mode looks for pulses that fail to transit a given region. You can
search for positive-going or negative-going runts, or both. An adjustable
hysteresis band is provided to eliminate noise.
In the case of negative-going runt pulses, the value displayed in the table is
the difference (delta) of the high level of the signal and the runt amplitude,
i.e., where the runt bottoms out.
This can be confirmed by placing cursors on the runt pulse and reading the
delta Y value in the trace labels: