5-1
IM WT5000-02EN
5.1 Setting Harmonic Measurement Conditions
► “Input Element Group (Elements)” in the features guide
► “PLL Source (PLL Source)” in the features guide
► “Measured Harmonic Orders (Min Order/Max Order)” in the features guide
► “Distortion Factor Equation (Thd Formula)” in the features guide
► “Number of FFT Points (FFT Points)” in the features guide
► “Anti-Aliasing Filter” in the features guide
This section explains operating procedures using the following setup methods.
• Procedure Using the Setup Menu (see chapter 1)
* For the operation to perform harmonic measurements in accordance with IEC 61000-4-7, see chapter 13.
In IEC Harmonic measurement, there is a limitation on the measurement functions that can be measured.
See the appendix in the Getting Started Guide, IM WT5000-03EN.
Procedure Using the Setup Menu
1.
Tap the Setup icon , or press MENU under SETUP.
2.
Tap Computation/Output tab. A computation and output settings overview screen appears.
Pressing ESC closes the overview screen.
Setting the Harmonic Measurement (Harmonics)
3.
Tap Harmonics. A harmonic measurement setup screen appears.
Computation/Output tab
Harmonics button
Set the number of FFT points (1024, 8192).
Set the distortion factor equation (1/Total, 1/Fundamental).
Set the maximum value of the measured harmonic order (1 to 500).
Set the minimum value of the measured harmonic order (0, 1).
Set the PLL source (U1 to U7, I1 to I7, Ext Clk).
Group Hrm1 Group Hrm2
element groups.
Chapter 5 Harmonic Measurement
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