I said I understood it was a bug, but what real world measurement fails for you, that is my point? It's a nice anecdote; however, if you were really measuring low-level DC or noise in the low mv range, who would be setting the scale to 160V?
Of course, I could be wrong and this is certainly a nuisance, but I've found it's best to use equipment in ways that enhance its performance rather than in ways magnify its weaknesses. That is true for anything.
BTW, I think in single channel mode, the performance of the scope is outstanding, and that is why I think this bug is nuisance, because it certainly need not be this way.
I don't know if you for some reason refuse to read what I wrote or you're making fun of me...
NO milivolts... Read again.. CH1 AND CH2 on 1V/DIV , probe connected only to CH1
NOTHING on CH2, disconnected, no probe connected...
RMS on CH1 2.07V, RMS on CH2 1.9V !!!
With nothing connected to the CH2 BNC.
CH2 with NOTHING connected to it measures cca 80% of whatever you are measuring on CH1 ( not flecking micro-volts, but 80 % of data from CH1.....
)
That fails EVERY real world measurement criteria for that channel and particular RMS measurement.....
If I have NOTHING connected to CH2(no probe, BNC is empty), I can't have spillover from CH1 to CH2 of 1.9V RMS... That is 2 DIVs
But is a serious thing if you need RMS... I can just measure on CH2 and CH3 as a workaround but it is a serous flaw anyways.. And I didn't buy 4CH scope to use it as a 1CH...
I could have gone with 2CH DS2000 series with just a little more money but I needed 4CH for the things I do...
So I want all channels to work normally.. Of course I will make do with it for the time being.. But it should be fixed eventually..
I don't want this to become an argument of a sorts. I'm persistent because you seem not to understand the problem, and despite your good will to help, you are talking about unconnected things..
I just want to untangle misunderstanding..
All the best..