7-26
IM WT3001E-51EN
Explanation
The harmonic measurement range can be specified. The harmonic orders specified here
are used to determine the numeric data of the distortion factor. For details on how to
determine the distortion factor, see section 7.11.
• Selecting the Minimum Harmonic Order to Be Measured
The order can be selected from the following:
• 0: Includes the 0
th
order (DC) component when determining various numeric data
of the harmonic waveform.
• 1: Does not include the 0
th
order (DC) component when determining various
numeric data of the harmonic waveform. 1
st
order (fundamental signal) is the
first component used.
• Setting the Maximum Harmonic Order to Be Measured
Select the harmonic order in the range from 1 to 100
th
order.
Note
• If the minimum harmonic order to be measured is set to 1, the data of the DC component is
not included when determining the numeric data of distortion factor.
• You can set the maximum harmonic order up to 100
th
order, but the maximum harmonic
order that is actually used to determine the numeric data is the order corresponding to the
upper limit of the measured order. The upper limit is determined automatically (maximum is
100
th
) by the frequency of the PLL source. The numeric data corresponding harmonic orders
exceeding the upper limit are shown as [-------] (no data).
• The maximum order that can be measured in IEC harmonic measurement mode is 50.
Orders exceeding 50 cannot be measured even if you specify such orders.
• If you use the Harmonic/Flicker Measurement Software, the maximum order is automatically
set to 40.
7.6 Setting the Measured Order
