74
Measuring Harmonic
Conguring settings common to harmonics
Display screen [INPUT] > [COMMON]
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1
Tap the [Grouping] box, then from
the list, select a calculation method
of the intermediate harmonic for the
measured harmonic values.
OFF
Treats only components of a whole
number multiple of the fundamental
wave as the harmonic of the
corresponding order.
TYPE1
Treats the harmonic sub-group as
the harmonic of the corresponding
order.
This setting provides compatibility
with the Hioki PQ3198’s harmonic
measurement functions.
TYPE2
Treats the harmonic group as the
harmonic of the corresponding
order.
2
Tap the [THD calculation order] box, rotate the Y rotary knob to set the THD calculation
order, and then tap the [THD calculation order] box to conrm.
Lit up in green: in 1 increments
lit up in red: in 10 increments
THD calculation order: Upper limit order, which means the highest order to which the total harmonics are
calculated.
2 to 500 (per step)
• If the analysis order does not reach the set upper limit value due to the harmonic measurement mode and
fundamental frequency, the calculation will be performed using the analysis order as the upper limit.
• Measured harmonic values displayed in list and graph forms and measured harmonic values obtained via
the instrument’s communications functionality are not constrained by the upper limit order set here.
3
Tap the [THD calculation method] box, then from the list select the equation for total
harmonic distortion THD.
This setting is valid for all voltage and current harmonic measurement for all channels.
THD-F
Ratio of the total harmonic component to the fundamental wave
This setting is typically used in applications such as IEC standard-compliant measurement.
THD-R
Ratio of the total harmonic component to the total harmonic component including the
fundamental wave
This setting yields values lower than those of THD-F for waveforms with a large amount of
distortion.
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