Post
by Nils Roos » Wed Jan 06, 2016 11:45 pm
Happy new year to you, too^^ - sorry, it's a bit late.
The Red Pitaya can be used as a voltmeter, but it is not a perfect fit for the task, because you are limited in your range of voltages and switching between voltage settings is more complicated. If a huge dynamic range is of no concern to you, but you rather want to measure voltages in a specific range, for example 0-5V with mV resolution, it should work ok.
The input impedance is stated in the technical specs, 1 MOhm || 10pF