Table 10: More measurements
Measurement Description
Area The area over the entire waveform or gated region in volt-seconds. Area measured above
ground is positive; area measured below ground is negative.
Cycle Area The area over the first cycle in the waveform or the first cycle in the gated region expressed in
volt-seconds. The area above the common reference point is positive while the area below the
common reference point is negative.
Phase The amount of time that one waveform leads or lags another waveform, expressed in degrees
where 360° contains one waveform cycle.
Burst Width The duration of a burst (a series of transient events) and is measured over the entire waveform
or gated region.
Table 11: Histogram measurements
Measurement Description
Wfm Ct Displays the number of waveforms that have contributed to the histogram.
Hits in Box Displays the number of points in or on the histogram box.
Peak Hits Displays the number of points in the largest bin of the histogram.
Median Displays the middle point of the histogram box. Half of all acquired points within or on the
histogram box are less than this value and half are greater than this value.
Max Displays the voltage of the highest nonzero bin in vertical histograms or the time of the
rightmost nonzero bin in the horizontal histograms.
Min Displays the voltage of the lowest nonzero bin in vertical histograms or the time of the leftmost
nonzero bin in the horizontal histograms.
Pk-Pk Displays the peak-to-peak value of the histogram. Vertical histograms display the voltage of the
highest nonzero bin minus the voltage of the lowest nonzero bin. Horizontal histograms display
the time of the rightmost nonzero bin minus the time of the leftmost nonzero bin.
Mean Measures the average of all acquired points within or on the histogram box.
Std Dev Measures the standard deviation (Root Mean Square (RMS) deviation) of all acquired points
within or on the histogram box.
Mean ±1 Std Dev Displays the percentage of points in the histogram that are within one standard deviation of the
histogram mean.
Mean ±2 Std Dev Displays the percentage of points in the histogram that are within two standard deviations of the
histogram mean.
Mean ±3 Std Dev Displays the percentage of points in the histogram that are within three standard deviations of
the histogram mean.
Table 12: Communication measurements
Measurement Description
Ext Ratio The ratio of eye top to base. This measurement only works for waveform database or a
reference waveform saved in waveform database mode.
Ext Ratio % The ratio of eye top to base expressed as a percentage. This measurement only works for
waveform database or a reference waveform saved in waveform database mode.
Analyzing waveforms
132 DPO70000SX Series User
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