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Rigol DS1054z mystery

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Anthocyanina:
it is not just all that was mentioned above, but also that the 1054z unfortunately doesn't have good antialiasing. Even with it turned on, it will still alias. Other scopes do have much better antialising, like the AD2 for example, even with its very low memory and sample rate it doesn't show an aliased waveform, like shown in this video with a 1MHz sine. This particular scope will show a darker color to show there is information there not properly captured by the acquisition system. If you do stop the acquisition then zoom in, you will see an aliased waveform, but if the acquisition is running constantly, instead of aliasing, you'll see the darker color showing the right amplitude and it will let you know you should use a faster timebase to properly see the signal. So it's also important to know that memory and sample rate are not everything that matters when it comes to avoid displaying an aliased signal

RoGeorge:
Antialising works well enough in ds1054z if the acquisition is left on auto.
When one sets custom memory depth, this will affect sampling rate, too.
Aside that, in the above pics Anti-alising was set to OFF (default is on).

evava:
To sum it up, in the end it turned out, as it always does, that when all else fails,

RTFM !

I apologize for the unnecessary thread..

2N3055:

--- Quote from: evava on December 02, 2022, 08:10:21 am ---To sum it up, in the end it turned out, as it always does, that when all else fails,

RTFM !

I apologize for the unnecessary thread..

--- End quote ---

Don't worry. It was honest learning step and everybody was polite and nice to everybody. This is GOOD thread.  :-+

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