Fluke 8588A Operator's Manual page 98

8588A/8558A
Operators Manual
Using Analyze in Digitize Mode
In Digitize, Analyze always uses the full record of the digitized data. Charting
takes place after the data is captured, not live as in the other functions. Analyze
in Digitize does not have Statistics as it does in the other functions. It has two
ways to chart the data:
Trend chart: The Trend chart is similar to the one in all of the other functions.
 (Auto) or  (Manual) scales the vertical axis, and an  (Auto
Once) feature which scales the data to fit the chart one time, then reverts to
Manual.
Frequency domain histogram chart: The captured data is processed by a
Discrete Fourier Transform to convert the digitized time domain data to the
frequency domain. The Frequency domain chart provides a convenient way to
view the spectral content of the data without external post processing.
When Analyze is enabled, pushing  acquires and plots another data set.
See the screens below.
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