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Thanks for the recommendations. The GW will be added to my "maybe" list.
Quote from: nctnico on May 31, 2020, 08:46:55 pmThat is the Analog discovery.FFT length is important to get a high frequency resolution. More bits means more dynamic range. I don't have an extra computer to devote to the bench and not another $1K for one, so no Discovery 2. And yes, use is for audio frequency, distortion testing and diagnostics. The newish Rigol DS 1202Z ($299; ~$30 less than current Intek previously mentioned) has 24M bit depth which I thought would help with fft.
That is the Analog discovery.FFT length is important to get a high frequency resolution. More bits means more dynamic range.
IIRC Mechatrommer has written an FFT application for the DS1054Z but the update rate will be very low. The advantage of having FFT on an oscilloscope is that it is -somewhat- realtime with updates less than 1 second apart.
Quote from: nctnico on June 07, 2020, 04:20:07 pmIIRC Mechatrommer has written an FFT application for the DS1054Z but the update rate will be very low. The advantage of having FFT on an oscilloscope is that it is -somewhat- realtime with updates less than 1 second apart.I've seen a reasonable performing PoC a long time ago. This convinced me a lot should be possible when properly optimized. Unfortunately that software is long gone.https://hackaday.com/2015/09/22/a-better-spectrum-analyzer-for-your-rigol-scope/