I got one of these chinese miniature digital scopes, and I can say that yes, it is an interesting tool, but more useful when you have to use it on the field. The user interface is good, but the lack of the traditional knobs is sad. Luckily, it is completely open source. Anyway, I hope someone (or myself) build a control and visualizer tool over USB. That will make it much easier and practical to use on a workbench. Ah, for audio signals it seem to be accurate and good.
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