I am a bit puzzled. I want an oscilloscope which allows me to watch two sinus albeit with a very small phase shift.
I have considered the usual parameters of scopes, namely: bandwidth, resolution, sampling rate and rise time. But I don't manage to put my head around it.
The sine have a frequency on the 100-200 Hz and amplitudes of about 2 Vpp. So typically small bandwidth will do. But I want to see phase shifts of 5ns -- 5 µs. I guess I need at least 18 bits resolution, but then? I don't want to go to the motto, I'll take a scope that overkills all, and be sure, because, those tend to cost slightly more.
Just to try and be clearer, I am not asking for a scope recommendation (brand and all), but which specification of a scope should I check to see such small shifts?