Search found 5 matches

by pub2000
Sat May 24, 2014 6:30 am
Forum: PicoScope 6 for Windows
Topic: Inaccurate THD measurement !!!
Replies: 9
Views: 5833

Re: Inaccurate THD measurement !!!

Then I wish you much success in improving the PicoScope software. I wanted an answer today because I need to do some actual measurements but if you can not today, then in the next few days or next week. I recommend you buy at least three kits DIY audio amplifiers and test them as I said above. If yo...
by pub2000
Tue May 20, 2014 9:01 am
Forum: PicoScope 6 for Windows
Topic: Inaccurate THD measurement !!!
Replies: 9
Views: 5833

Re: Inaccurate THD measurement !!!

Maybe someone can give me a answer.
Anyway, I sent my message above and to technical support.
by pub2000
Fri May 16, 2014 6:19 pm
Forum: PicoScope 6 for Windows
Topic: Inaccurate THD measurement !!!
Replies: 9
Views: 5833

Re: Inaccurate THD measurement !!!

Hi, I tried but I don't think the result is the most appropriate . For example , I did this: 1 ) First, I used the PicoScope signal generator (AWG output) with no load on the output and the THD is ~0.05 % at 1 kHz. In fact, varies between 0.05 % and 100 % (quite frustrating); 2 ) I connected the gen...
by pub2000
Fri May 09, 2014 1:32 pm
Forum: PicoScope 6 for Windows
Topic: Inaccurate THD measurement !!!
Replies: 9
Views: 5833

Re: Inaccurate THD measurement !!!

I sent a message to that email address with some samples. I notice the THD errors occur especially when: 1. Changes measured parameters >> Properties >> Advanced> Harmonic detector; 2. Modify value "Capture Count" (I noticed a smaller value it is better!!!). Errors occur, I suppose, because if I inc...
by pub2000
Wed May 07, 2014 6:21 pm
Forum: PicoScope 6 for Windows
Topic: Inaccurate THD measurement !!!
Replies: 9
Views: 5833

Inaccurate THD measurement !!!

Hello, Is here a tutorial to measure THD (%) at output audio amplifier using PicoScope 6? I tried various settings, for example: I edited measuring THD use "Advanced Mode", I tried various settings to "harmonic detector" but the results are very inaccurate. I mention that I own a 2000 Series Oscillo...