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  1. Here is an article on using a USB scope in the restoration and testing of an older (1946) AC/DC tube radio, and some safety precautions to follow:
  2. Any chance of Digilent designing a faster (say 100MHz) version of the Analog Discovery scope? Although the Discovery scope is nominally spec'd at 5MHz, it is actually useful up to about ~ 20MHz? (would be useful if the current version could do sine output to 20MHz instead of 10MHz. Or a function generator which goes to 50MHz?
  3. I think I've figured this out thanks to this very good article: Scaling FFT for noise Updated this article with a final paragraph with a specific example: 550 kHz Noise Measurement System
  4. For random noise spectra (e.g. amplified shot noise, thermal noise etc), a display of power density (e.g. in uV^2/Hz) is commonly used where the power is per unit bandwidth .. as in op-amp data sheets for en and in spectra. How does one convert a noise spectrum as displayed in the FFT plot generated with Analog Discovery to a uniform sampled power density plot in uv^2/Hz? Please no complicated FFT sampling theory .. just a simple "how to" answer with parameters accessible in Waveforms software.
  5. I've added a new article on circuit noise measurements using Analog Discovery and a low-noise high-gain audio preamp 550kHz Noise Measurements