Cumulative Stats
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The Cumulative Stats table is a type of Matrix Table that reports the following statistical information for each reported Region Table performance metric, based on the accumulated set of detected LFM regions detected within multiple acquisitions since the last Measurement Restart (this includes the current acquisition plus potentially multiple previous acquisitions). Cumulative statistics are reset whenever the measurement is restarted. They are not reset when the measurement is paused.
- Minimum
- Maximum
- RMS
- Average
- Std Dev (Standard Deviation)
- Count (reports statistical data set count of detected LFM regions accumulated over multiple acquisitions)
Reference Region Count describes the number of unique LFM regions contained within each repetition instance of the measured signal's LFM region-group pattern. This value is used for Ref Region identification within FMCW Region Table results, plus associated per Ref Region statistical metric reporting within the Current Record Statistics and Cumulative Statistics tables.
Cumulative statistics accumulate most trace indicators that happen during the measurement (as long as the measurement completes and produces table data). The Sync Not Found indicator will not be accumulated since the Region Table does not get calculated in this instance. The CAL? indicator will not be accumulated while the measurement is running since the 89600 VSA Software only checks for CAL status once the measurement pauses. DATA? will not be accumulated. The indicator comes from the Pulse/Region table.
The illustration below shows an example of the Cumulative Statistics table metrics that are displayed after a Preset Columns operation (right-click any column, then click Preset Columns):
