#305
This video shows how to use the FFT function on an oscilloscope to measure the relative amplitude of the harmonic distortion components of a signal, and then take those results and compute the THD, or Total Harmonic Distortion. Actual measurements are shown, and results are validated by a THD calculator in the scope as well as a THD measuring multimeter.
Videos mentioned in this video are:
Audio Compressor project: • #157: Circuit fun: Automatic audio le...
Demo of above: • #163: Automatic Volume Level Control ...
Basics of using FFT: • #65: Basics of using FFT on an oscill...
Basics of dB: • #136: What is a dB, dBm, dBu, dBc, et...
Notes from this video:
http://www.qsl.net/w2aew/youtube/THD_...