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| How much noise floor and other things matter in oscilloscope usability |
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| Fiorenzo:
Max average possibile |
| Fiorenzo:
Fungus actually i think in my modest opinion that the Rigol is a greate scope, for sure i will miss it due to its graphics and fast acquisition, comparing both the scope you see the difference a lot. But It has also a lot more noise.... I have an idea to show you how much the signal degrade due to this problem. |
| tautech:
--- Quote from: Fiorenzo on December 29, 2021, 10:36:03 am ---Fungus actually i think in my modest opinion that the Rigol is a greate scope, for sure i will miss it due to its graphics and fast acquisition, comparing both the scope you see the difference a lot. But It has also a lot more noise.... I have an idea to show you how much the signal degrade due to this problem. --- End quote --- Study the screenshots you've just posted to see just how fast it actually is with averaging engaged. Which initiates another question; what would the MSO5000 sampling drop to if one more channel was activated ? |
| Fungus:
--- Quote from: nctnico on December 29, 2021, 12:30:05 am ---Just stop trying to make right what is clearly wrong. The small spikes that the trace shows on the Siglent (or any other modern DSO other than Rigol mentioned in this thread) can point to other problems. --- End quote --- I'm not trying to make anything "right", I'm just trying to see if the Rigol would prevent somebody from doing their job with this signal. Questions: (1) Can the Rigol display/measure the ripple? It clearly can. (2) Can the Rigol see the high frequency spikes? Maybe not as well as the Siglent but they're clearly visible. (and the jury is out until we know the effect of turning the intensity up/down to enhance them - just like you had to do on old Analog 'scopes to see artifacts like that) Bottom line: The Rigol can see what's going on in that signal. --- Quote from: nctnico on December 29, 2021, 12:30:05 am ---What are you going to do when the ripple is even smaller? --- End quote --- Get an amplifier? :-// Does ripple/noise/electronics magically stop at 1mV? There's plenty of signals that the Siglent can't see either... |
| Fungus:
--- Quote from: tautech on December 29, 2021, 10:42:11 am ---Which initiates another question; what would the MSO5000 sampling drop to if one more channel was activated ? --- End quote --- It's not difficult: With two channels you get 4GHz/channel, with three or four channels you get 2GHz/channel. At no point is it less than the Siglent with just a single channel. |
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