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| How much noise floor and other things matter in oscilloscope usability |
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| Fungus:
--- Quote from: Fiorenzo on December 24, 2021, 07:30:31 pm ---Could you suggest me a different model if you think It could be better? --- End quote --- At the same price? Not a chance. You'll have to go up quite a lot in price to get something better. Think: The difference would buy a good multimeter, a soldering iron and a bench power supply. (And the oscilloscope still wouldn't be perfect, you'd just have other things to worry about) OTOH you could even go down to a 500 Euro oscilloscope like the Siglent SDS1204X-E. It's probably all you need and you'd have enough money left over to create an awesome lab. |
| bdunham7:
--- Quote from: Fungus on December 24, 2021, 07:40:03 pm ---It definitely is. It will help reduce the Gibbs Phenomenon on your digital circuits. (Ever wonder how "ringing" can occur before a signal starts to rise? Undersampling combined with sin(x)/x reconstruction...) --- End quote --- Meh, ringing on step responses isn't usually Gibbs unless something has been designed or set wrong. You can have ringing (and even pre-ringing) on an analog scope. |
| Fungus:
--- Quote from: bdunham7 on December 24, 2021, 07:50:14 pm ---Meh, ringing on step responses isn't usually Gibbs unless something has been designed or set wrong. --- End quote --- It can be a mixture of both. --- Quote from: bdunham7 on December 24, 2021, 07:50:14 pm ---You can have ringing (and even pre-ringing) on an analog scope. --- End quote --- But you can't have Gibbs. ::) |
| Fiorenzo:
--- Quote from: Fungus on December 24, 2021, 07:41:06 pm --- --- Quote from: Fiorenzo on December 24, 2021, 07:30:31 pm ---Could you suggest me a different model if you think It could be better? --- End quote --- At the same price? Not a chance. You'll have to go up quite a lot in price to get something better. Think: The difference would buy a good multimeter, a soldering iron and a bench power supply. (And the oscilloscope still wouldn't be perfect, you'd just have other things to worry about) OTOH you could even go down to a 500 Euro oscilloscope like the Siglent SDS1204X-E. It's probably all you need and you'd have enough money left over to create an awesome lab. --- End quote --- Yes I know, this is one of my doubts. I will check some review of that scope but in the mean time what do you think about its bigger brother sds2000x-plus? |
| Fiorenzo:
--- Quote from: bdunham7 on December 24, 2021, 06:38:26 am ---Can you try again only set the vertical scale to 1mV/div and measure with no probe and with the shorted probe? Then do the same at 100mV/div. --- End quote --- Here I am, I did the test you asked for, please let me know whath do you think about It. Thank you very kind! Photos: 1) 1mv/div, no probe, 20Mhz BW limit, 1x 2) 1mv/div, probe, 20 MHz BW limit, 1x 3) 100mv/div, no probe, all the same 4) 100mv/div, probe, all the same |
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