Agilent Technologies InfiniiVision 3000 User Manual page 238

14
Measurements
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
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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— When enabled, the standard deviation shown in measurement
Agilent InfiniiVision 3000 X-Series Oscilloscopes User's Guide