APPENDIX 25
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Appendix 4 Sampling in the 3166
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Appendix 4 Sampling in the 3166
This power meter uses two cycles (when measuring at 50/60 Hz; 16 cycles
when measuring at 400 Hz) as one sample and takes measurements by
continuously performing various calculations on the data (without losing the
waveform). This data is displayed intermittently, depending on the display
update rate, as the instantaneous values. In contrast, the
minimum/maximum values are displayed by finding the minimum and
maximum values in all of the continuously measured sample values.
Because all of the continuously measured sample value data is integrated for
the integrated values in Integrated Measurement mode and Demand
Measurement mode, even transient waveforms can be measured.
In Normal Measurement mode the D/A output continuously outputs all of the
continuously measured sample values.
Therefore, even transient changes in the input waveform generated by a power
spike, for example, will be faithfully detected or output.
In Integrated Measurement or Demand Measurement mode, however, the D/A
output follows the display update rate.
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