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Rigol HDO1000 and HDO4000 12bit oscilloscopes launched in China
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Antonio90:
Doesn't seem to be the case then. Activating a second channel could induce some crosstalk maybe?
But activating and deactivating measurements, I don't know what could be causing it.
2N3055:

--- Quote from: Antonio90 on December 15, 2023, 07:03:00 pm ---Doesn't seem to be the case then. Activating a second channel could induce some crosstalk maybe?
But activating and deactivating measurements, I don't know what could be causing it.

--- End quote ---

There is no crosstalk.
There is nothing connected to anything.
NO signals.
Just scope's own noise...

That is error in measurement software.
Or at least let's hope it is. Otherwise there is hardware problem.
voltsandjolts:
Are the inputs shielded? Covered with tinfoil at least?

If 50 Ohm terminators fitted to the inputs are the noise measurements stable?
egonotto:
Hello,

I suspect it's a software bug.

Best regards
egonotto
2N3055:
That image that says 340µV P-P max, 280 µV P-P min does not have trace 0.3 div wide...
And it says 8µV RMS which, well, is not really possible...
That would be ratio of 30, not 6-8..
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