Total Harmonics Distortion (THD)

The Total Harmonic Distortion (THD) of a signal is a measurement of the harmonic distortion present and is defined as the ratio of the sum of the powers of all harmonic components to the power of the fundamental frequency. In an EDM sweep sine test, the sweep THD can be enabled by checking the option under Advanced Settings under Test Parameter tab. User can either view the live THD signals or the THD table as shown below.