LeCroy DDA 7 Zi series, Operator'S Manual

Page: 181 / 544

Operator's Manual
WP700Zi-OM-E-RevA
180
Parameter Description Definition Notes
(eovp) on an eye scopes.
Eye Pk Noise
(eppn) Peak-to-peak noise of a level
of an eye diagram Standard in SDA and WaveExpert
scopes.
Eye PkPk Jit
(eppj) Peak-to-peak jitter measured
on eye persistence Standard in SDA and WaveExpert
scopes.
Eye Pulse Wid
(epwid) The width of the eye
measured at mid level Standard in SDA and WaveExpert
scopes.
Eye Q Factor
(Q) Q factor measured within the
eye aperture
Available with SDA and SDM
options.
Standard in SDA, SDA100G, and
WaveExpert scopes.
Eye RiseTime
(erise) Rise time of the mean of
persistence data Standard in SDA and WaveExpert
scopes.
Eye RMS Jit
(ermsj) Root mean square jitter of an
eye Standard in SDA and WaveExpert
scopes.
Eye SD Noise
(esdev) The standard deviation of
data on one eye level Standard in SDA and WaveExpert
scopes.
Eye SgToNoise
(estn) Signal to noise of an eye
diagram Standard in SDA and WaveExpert
scopes.
Eye SupRatio
(esupr)
Suppression ratio of an eye
Standard in SDA and WaveExpert
scopes.
Eye Width
(ewdth) Size of the horizontal
opening of an eye diagram
Available with SDA and SDM
options.
Standard in SDA, SDA100G, and
WaveExpert scopes.
Fall 80-20%
(fall8020)
Fall 80-20%: Duration of
pulse waveform's falling
transition from 80% to 20%
of the amplitude, averaged
for all falling transitions
between the cursors.
Average duration of falling
80-20% transition
On signals not having two major
levels (triangle or saw-tooth waves,
for example), top and base can
default to maximum and minimum,
giving, however, less predictable
results.
Standard parameter.
Fall time
(fall)
Fall time: Duration of falling
edge from 90-10% of
amplitude.
Time at upper threshold
minus
Time at lower threshold
averaged over each
falling edge
On signals not having two major
levels (triangle or saw-tooth waves,
for example), top and base can
default to maximum and minimum,
giving, however, less predictable
results.
Standard parameter.
Fall@level
(fall@lv)
Fall at level: Duration of
pulse waveform's falling
edges between user-
specified transition levels.
See also
Rise@level .
Transition time for % or
absolute levels of all
falling edges.
Enhanced version sets
measurement calculations
to use one of the
following:
On signals not having two major
levels (triangle or saw-tooth waves,
for example), top and base can
default to maximum and minimum,
giving, however, less predictable
results.
Standard parameter.