THD measurement

Forum for discussing PicoScope version 6 (non-automotive version)
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THD measurement

Post by kenneths » Tue Apr 19, 2011 9:42 am

We have used the ADC-42 scope together with SW Picoscope ver. 5.x for factory testing for many years with very good result. We have now bought a 2203 and try to measure the same parameters with Picoscope ver. 6.

The transfer is successful except for THD measuring. With the old SW we can set a maximum frequency for the FFT but I can’t find this option in the new SW so I get a terrible high maximum frequency in the spectrum window. The THD measurement is much higher than with the old SW which I suppose depends on noise in the high frequency region.

Have I missed something in the setup of the Picoscope or is there a work around?



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Re: THD measurement

Post by ziko » Thu Apr 21, 2011 2:38 pm

You can change the frequency range from the toolbar at the top. Please see attached image.

Kind regards

Technical Specialist

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