Tektronix MDO4000C Series, User Manual

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Table 6: Histogram measurements
Measurement Description
Waveform Count Displays the number of waveforms that contributed to the histogram.
Hits in Box
Displays the number of samples within the histogram box or on its boundaries.
Peak Hits Displays the number of samples in the bin that contains the most hits.
Median Displays the middle histogram data value, where half of all histogram data
points are less than this value and half are greater than this value.
Peak-to-peak 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.
Histogram Max Displays the voltage of the highest nonzero bin in vertical histograms or the
time of the rightmost nonzero bin in horizontal histograms.
Histogram Min Displays the voltage of the lowest nonzero bin in vertical histograms or the
time of the leftmost nonzero bin in horizontal histograms.
Histogram Mean Measures the average of all histogram data points within or on the histogram
box.
Standard
Deviation Measures the standard deviation (Root Mean Square (RMS) deviation) of all
histogram data points within or on the histogram box.
Sigma1 Displays the percentage of the hits in the histogram that are within one
standard deviation of the histogram mean.
Sigma2 Displays the percentage of the hits in the histogram that are within two
standard deviations of the histogram mean.
Sigma3 Displays the percentage of the hits in the histogram that are within three
standard deviations of the histogram mean.
Analyze waveform or trace data
MDO4000C Series Oscilloscope User Manual 81
Preliminary