The THD measurements at distance of 315 mm and voltage levels from 2.83 Volt to 8 Volt were carried out with High Pass Filter "on" (2nd order Butterworth type, 80 Hz cutoff, HPF2-80)
The THD measurements at distance of 315 mm and voltage level 11.2 Volt were carried out with High Pass Filter "on" (2nd order Butterworth type, 120 Hz cutoff, HPF2-120)