= Total Harmonic Distortion Measurements by Anritsu
{title2=11410-02911A}
https://dl.cdn-anritsu.com/en-us/test-measurement/files/Technical-Notes/White-Paper/11410-02911A.pdf[Official Anritsu white paper]. Printed p. 2, THD Definitions and Calculation Approach, distinguishes normalization to the fundamental from normalization to the full harmonic RMS sum. Printed p. 3 and Figure 1 describe source-power/receiver calibration across the measured harmonic frequencies. Printed pp. 4–7 demonstrate separate harmonic measurement channels and their root-sum-square combination.
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