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Measuring Power
Data refresh interval
Measured values are calculated from the voltage and current waveforms, and the period for
refreshing the measured data is set.
Data acquired through communications, analog output data from D/A output, and data saved in
interval saving will be refreshed at the refresh intervals set here.
Display screen [INPUT] > [COMMON]
11
1
Tap the [Meas. Interval] box and select
the data refresh interval from the list.
Data refresh interval
10 ms
Select this interval when measuring fast power uctuations.
Even when 10 ms is selected, harmonic analysis operates at 50 ms intervals.
For frequencies lower than 100 Hz, the refresh rate may be a whole number multiple of
10 ms.
50 ms
In general, select [50 ms].
This option provides a good balance between speed and accuracy.
For frequencies lower than 20 Hz, the refresh rate may be a whole number multiple of
50 ms.
200 ms
Select this interval when the measured values are unstable at 50 ms due to large
uctuations.
Also select when IEC mode is used for harmonics measurement.
The data is refreshed almost simultaneously with the display refresh interval.
For frequencies lower than 5 Hz, the refresh rate may be a whole number multiple of
200 ms.
• Settings cannot be switched by on a wiring conguration or channel basis.
• The display refresh interval is xed at approximately 200 ms regardless of this setting.
• If the measured values are unstable even when 200 ms is selected, use the average function
together.
• To obtain a D/A output close to the smooth analog output of the previous model, 3193, select
10 ms and combine this setting with the exponential average or moving average of the average
function.
Displaying Power Numerically
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