LeCroy SDA - Page 168

168 SDA-OM-E Rev H
Parameter Description Definition Notes
Minimum Measures the lowest point in a
waveform. Unlike base, does not
assume waveform has two levels.
Lowest value in
waveform between
cursors
Gives similar result when
applied to time domain
waveform or histogram of data
of same waveform. But with
histograms, result may include
contributions from more than
one acquisition.
Standard parameter.
Nb phase Provides a measurement of the
phase at a specific frequency of a
waveform (narrow band).
Available with DDM2, XMATH,
SDA, and XMAP options.
Standard in DDA-5005A and
SDA100G scopes.
Nb Power Provides a measurement of the
power at a specific frequency of a
waveform (narrow band).
Available with DDM2, XMATH,
PMA2, SDA, and XMAP
options.
Standard in DDA-5005A and
SDA100G scopes.
N-cycle jitter Peak-to-peak jitter between edges
spaced n UI apart.
Compares the
expected time to the
actual time of leading
edges n bits apart.
Available in SDA analyzers.
NLTS Provides a measurement of the
nonlinear transition shift for a prml
signal.
Available with DDM2 option.
Standard in DDA-5005AA.
Num Points Number of points in the waveform
between the cursors.
Standard parameter.
One Level One level of an eye diagram Available with SDA and SDM
options.
Standard in SDA, SDA100G,
and WaveExpert scopes.
Overshoot- Overshoot negative: Amount of
overshoot following a falling edge,
as percentage of amplitude.
(base - min.)/ampl x
100
Waveform must contain at
least one falling edge. On
signals not having two major
levels (triangle or saw-tooth
waves, for example), may not
give predictable results.
Standard parameter.
Overshoot+ Overshoot positive: Amount of
overshoot following a rising edge
specified as percentage of
amplitude.
(max. - top)/ampl x
100
Waveform must contain at
least one rising edge. On
signals not having two major
levels (triangle or saw-tooth
waves, for example), may not
give predictable results.
Standard parameter.
Overwrite Ratio of residual-to-original power
of a low frequency waveform
overwritten by a higher frequency.
Available with DDM2 option.
Standard in DDA-5005A.