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| Rigol DHO800 memory depth / bandwidth upgrades and noise level! |
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| tautech:
--- Quote from: Fungus on November 08, 2023, 09:47:46 am --- --- Quote from: tautech on November 08, 2023, 09:35:45 am ---Yes, the active to the controls and selected channel trace is always atop all other channels. --- End quote --- So... Rigol has a much shallower learning curve. Got it! --- End quote --- Yep, no probe attenuation info. ::) |
| Fungus:
--- Quote from: tautech on November 08, 2023, 09:58:19 am ---Yep, no probe attenuation info. ::) --- End quote --- Yeah.... that's SO much more important than knowing which trace is going to move or change scale when you twist a knob. All the channel settings are only a gesture away. |
| bdunham7:
--- Quote from: rf-loop on November 08, 2023, 08:55:14 am ---So as far as possible I recommend to use around same settings (this msg was not based to you (and your other image) but as you see other people use image where was just after your 10k/500kSa image his ( @bdunham7 ) images where was used 2GSa 20M and 14Mpts. And my comment was just for this case. --- End quote --- For those of you faked out by the blue menu colors, in real life Siglent is using a blue color for active menu items, including the selected channel parameter, the "Trig'd" indicator, the trigger point and so forth. This is quite distinct in real life from the cyan channel color, although that may not be obvious on your monitor or if you have color-blindness. Unfortunately there's no option to change the colors. I missed the fact that the memory and sample rate were much reduced in the other examples. Why was that done anyway? In any case, here is the SDS1204X-E at 1MSa/s and 14kpts. Also, I added another screenshot showing how much of the noise in the Siglent is low-frequency. In addition, it might be good to compare scopes at 1V/div as well, to see how much of the fat traces are due to front-end noise at the lowest levels and how much is due to other factors. Some scopes don't quiet down proportionally as you decrease the gain and still have fat traces at the higher V/div settings. At 1mV/div, it looks like both the Rigol and the Siglent (1204X-E) have an ENOB of just under 7. I'd hope to see the Rigol doing much better at 1V/div. |
| Fungus:
--- Quote from: bdunham7 on November 08, 2023, 04:06:37 pm ---For those of you faked out by the blue menu colors, in real life Siglent is using a blue color for active menu items, including the selected channel parameter, the "Trig'd" indicator, the trigger point and so forth. This is quite distinct in real life from the cyan channel color --- End quote --- Yeah, it's obvious (sorta) when you know it... but it wasn't obvious to a few people just by looking at a screenshot. Hence my comment about "learning curve". |
| bdunham7:
--- Quote from: Fungus on November 09, 2023, 11:09:12 am ---Yeah, it's obvious (sorta) when you know it... but it wasn't obvious to a few people just by looking at a screenshot. --- End quote --- It's obvious enough when you're actually using the scope, so the only learning curve would be for reading screenshots. And Siglent seems to be good about getting most of the necessary information to interpret a signal up on the screen. Can you try what I suggested and post a screenshot of your scope at 20MHz and Full BW, 1ms/div, open connectors but at 1V/div? I'm curious what you'd get for ENOB when you get out of the lowest scales. |
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