21uV AC RMS noise at full 250M memory 100uV range 1ms/div. No difference on 200uV and 500uV ranges because they are physically the same.
Seems like they knocked it out of the park then.
(so far out that they added a 100uV range)
Rigol is doing some kind of interpolation/eres below 1mV/DIV. Clever and looks to be working OK.
But, they didn't knock anything out of the park. SDS2000X HD noise figures are for 500 MHz BW.
With only 20MHz limiter on, it has 22uV of RMS noise at 1mV/div
If I do the same trick on SDS200X HD and add ERES3 I get 18.5uV RMS at 500uV/div.
And since SDS2000X HD supports vertical zoom, here is
2uV/div display in all of it useless glory...
Anyways, it looks quite decent noise vise. Good job Rigol, finally. Now you need to do
all of them with
that frontend.
I'm looking forward to see how scope (as a whole) actually works. Maybe they are on the right track this time, looks promising..