In building a sine wave oscillator the question is how pure is it? I need to get a piece of test equipment to measure THD, preferably in percentage. The best I have found so far is this:
https://www.amazon.com/gp/product/B07KC6X51M/ref=ox_sc_saved_image_10?smid=A18RFE6ZVD9PX6&psc=1
Which I really don't like . Any other suggestions?
https://www.amazon.com/gp/product/B07KC6X51M/ref=ox_sc_saved_image_10?smid=A18RFE6ZVD9PX6&psc=1
Which I really don't like . Any other suggestions?