210 Keysight InfiniiVision HD3-Series Oscilloscopes User's Guide
14 Measurements
The source channel of the measurement is shown in parenthesis after the
measurement name. For example: "Freq(1)" indicates a frequency measurement
on channel 1.
The following statistics are shown: Name of the measurement, current
measured value, mean, minimum measured value, maximum measured value,
standard deviation, and the number of times the measurement has been made
(count). Statistics are based on the total number of captured waveforms
(count).
The standard deviation shown in Statistics is calculated using the same formula
used for calculating the standard deviation measurement. The formula is shown
in the section titled "AC RMS" on page 195.
Statistics continue to accumulate even when the statistics display is disabled.
4 To reset the statistics measurements, select Reset Statistics. This resets all
statistics and begins recording statistical data again.
Each time a new measurement (for example: frequency, period, or amplitude) is
added the statistics are reset and accumulation of statistical data begins again.
5 To enable or disable a relative standard deviation, select Relative σ.
When enabled, the standard deviation shown in measurement statistics
becomes the standard deviation/mean.
6 To specify the number of values used when calculating measurement statistics,
select the Max Count field and enter the desired value.
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