LeCroy DDA 7 Zi series, Operator'S Manual

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WavePro 7Zi
377
WP700Zi-OM-E-RevA
forms , each representing a different
characteristic of the waveform. Insight into edge details is given down to a few picoseconds — valuable in
applications such as the examination of fast signal transitions.
Timing Parameters
Timing parameters can also be used to measure cycle-to-cycle jitter, the width of positive and negative pulses,
the duty cycle of either polarity, and an infinite number of cycles on long records. Pulses or cycles can be counted
using one of these parameters.
As interpolation filtering is applied to signal edges in the vicinity of measurement points, timing parameters
operate on acquired waveform levels that may be selected in either volts or percentage of signal amplitude. Each
parameter calculation is performed over all cycles or edges present in the input signal, without limitations.
Statistical Tools
The information obtained from applying timing parameters can then be analyzed using the statistical tools,
histograms and trends:
x
Histograms characterize and present as a bar chart the statistical distribution of a timing parameter’s set
of values. In addition, there are 18 statistical histogram parameters, which operate directly on the
histogram.
x
Trends represent the evolution of timing parameters in line graphs whose vertical axes are the value of the
parameter, and horizontal axes the order in which the values were acquired.
How JitterTrack Works
Using “Clock” or “Data”
Use this function to plot as a bar chart the evolution over time of this and five other waveform attributes in simple
steps.
Figure 5-25. How JitterTrack’s Interval Error works when “Clock” Mode is selected