2-12
IM DL850E-03EN
There are three statistical processing methods:
• Normal statistical processing
While acquiring waveforms, the DL850E/DL850EV measures the measurement items and
calculates the statistics of the waveforms that it has acquired so far.
• Cyclic statistical processing (measurement and statistical processing are performed for each period)
The DL850E/DL850EV divides the waveform into periods starting at the left side of the screen (the
oldest waveform) and moving to the right side of the screen, measures the selected measurement
items within each period, and performs statistical processing on the measurement items.
• Statistical processing of history waveforms
The DL850E/DL850EV measures the measurement items and calculates the statistics of history
waveforms. Measurement and statistical processing begin with the oldest waveform.
GO/NO-GO Determination
This feature is useful for signal testing on production lines and for tracking down abnormal phenomena.
The DL850E/DL850EV determines whether the waveform enters the specified range. When the
DL850E/DL850EV returns a GO (or NO-GO) result, specified actions are performed.
Determination Methods
• Waveform Zone
The DL850E/DL850EV returns GO/NO-GO results based on whether waveforms leave or enter
the zone that you create using a base waveform.
Determination
area
The DL850E/DL850EV returns a GO or NO-GO
judgment according to the determination condition.
Specified zone
• Waveform Parameter
Set the upper and lower limits for automated measurement values of waveform parameters. The
DL850E/DL850EV performs GO/NO-GO determination based on whether the values are within
or outside of the limits.
Actions Performed according to Determination Results
The DL850E/DL850EV can print and save screen captures, save waveform data, beep, and send
e-mails according to the results of GO/NO-GO determination.
2.5 Waveform Computation and Analysis
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