12-22
IM WT3001E-51EN
Explanation
• Display during Measurement
The figure below is a display example of normal flicker measurement in progress.
Element number whose measured data is displayed
Flicker measurement status: Start
Total elapsed measurement time
Number of observation periods that have
completed the measurement and bar graph
Elapsed time in an observation period and
bar graph
Limit
<OFF> is displayed to the right of the limit
for items whose judgement is turned OFF.
Observation period being measured
• An asterisk is displayed to the right of the number. The dc, dmax,
and Tmax columns of that line show the maximum values in the observation period.
• The judgement of items whose judgement is turned OFF shows blank.
Observation periods that have finished the measurement
• The final values of dc, dmax, and Tmax are compared with the respective limits,
and the judgement (pass or fail) is displayed to the right of the final value.
• The short-term flicker value, Pst, is calculated, compared to the limit, and the judgement (pass or fail) is displayed.
• Judgement Display When the Measurement Is Complete
The figure below is a display example when the normal flicker measurement is complete.
Flicker measurement status: Complete
If the judgement of dc, dmax, Tmax, and Pst is pass for all observation periods,
Pass is indicated. Otherwise, Fail is indicated.
Element judgement
For elements whose measured data is
displayed, if the judgement of all items whose
judgement is turned ON is pass, Pass is
indicated. Otherwise, Fail is indicated.
Total judgement
If the judgement of all elements being
measurement is pass, Pass is indicated.
Otherwise, Fail is indicated.
Measured element
The long-term flicker value, Plt, is compared
to the limit, and the judgement (pass or fail) is
displayed.
12.5 Executing the Normal Voltage Fluctuation and Flicker Measurement