10-12
IM DL350-01EN
Statistical Processing of History Waveforms (History Statistics)
This is selectable only in scope mode.
In the statistical processing of history waveforms, the instrument measures automatically measured items on the
acquired waveform using the history feature and performs statistical processing on them. Statistical processing
is performed on older waveform data first. The waveforms that statistical processing is performed on are those
waveforms shown in the List that can be accessed from the History menu. Statistical processing of history
waveforms can be used with 1-cycle mode and the delay feature.
Measurement Items
These items are the same as those for the continuous statistical processing of automated measurement
parameters.
Measurement Time Period
This setting is the same as the measurement time period setting for the automated measurement of waveform
parameters.
Execution of Measurement (Execute Measure)
This item is the same as the Execute Measure item for cyclic statistical processing.
• In the statistical processing of history waveforms, the number of history waveforms that processing is
performed on is indicated in the Count column of the statistical value display.
• The number of history waveforms that can be used in the statistical processing of history waveforms varies
depending on the number of measured items that the instrument is calculating the statistics of.
64000/(the number of measured items that the instrument is calculating the statistics of)
Result Display (Display Result)
This item is the same as the Display Result item for cyclic statistical processing.
In the statistical processing of history waveforms, you can select a waveform by tapping a waveform on the
result display list to display its history waveform.
Notes about Statistical Processing
• During statistical processing,
appears in the center of the screen. Only Abort is valid.
• Statistical processing cannot be performed:
• On SD recorded waveforms.
• On FFT waveforms.
• The starting and stopping of statistical processing may require additional time depending on settings such as
the record length, the number of statistical processing items, and the input waveform.
10 Automated Measurement of Waveform Parameters