238 Keysight InfiniiVision 3000 X-Series Oscilloscopes User's Guide
14 Measurements
You can switch the statistics Display On or Display Off. Statistics continue to
accumulate even when the statistics display is off.
When you navigate away from the Measurements Menu, the statistics display will
no longer be displayed, but statistical data collection will continue. Return to the
Measurements Menu to see the data again.
To reset the statistics measurements, press the Reset Statistics softkey. 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.
When the [Single] key is pressed, statistics are reset and a single measurement is
done (count = 1). Successive [Single] acquisitions accumulate statistical data (and
the count is incremented).
Press the Transparent softkey to disable the Transparent mode. This shows
statistics with a gray background. Press the Transparent softkey again to enable
Transparent mode. This writes measurement values, statistics, and cursor values
on the screen without a background. The Transparent setting affects measurement
statistics, reference waveform information, and the optional Mask test feature's
statistics display.
Relative σ — When enabled, the standard deviation shown in measurement
statistics becomes a relative standard deviation, that is, standard deviation/mean.
Max Count — This softkey specifies the number of values used when calculating
measurement statistics.
The Increment Statistics softkey only appears when the acquisition is stopped and
the optional segmented memory feature is off. Press the [Single] or [Run/Stop] key
to stop the acquisition. You can use the horizontal position control (in the
Horizontal control section of the front panel) to pan through the waveform. Active
measurements will stay on screen, allowing you to measure various aspects of the
captured waveforms. Press Increment Statistics to add the currently measured
waveform to the collected statistical data.
The Analyze Segments softkey only appears when the acquisition is stopped and the
optional segmented memory feature is on. After an acquisition has completed
(and the oscilloscope is stopped), you can press the Analyze Segments softkey to
accumulate measurement statistics for the acquired segments.
You can also turn on infinite persistence (in the Display Menu) and press the
Analyze Segments softkey to create an infinite persistence display.
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