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| Rigol DHO800 memory depth / bandwidth upgrades and noise level! |
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| ebastler:
That would be a tad more than 11 bits of effective resolution, right? Assuming 9 vertical divisions (with a bit of margin at the top and bottom), it's 9*50 mv / 0.2 mV = 2250 > 2048. |
| Fungus:
--- Quote from: bdunham7 on November 12, 2023, 08:25:41 pm ---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. --- End quote --- Second attempt, with the right vertical scale: CH1+CH2 @20MHz, CH3+CH4 full. |
| ebastler:
Hmm -- pity that you deleted the screenshots taken at 50 mV/div. Those actually had a higher ENOB (yes, I know that's not quite it...) than at 1 V/div. For the 1 V/div acquisitions, I get 9*1000 mV / 5 mV = 1800, so a bit less than 11 bits. |
| Fungus:
--- Quote from: ebastler on November 12, 2023, 09:18:00 pm ---Hmm -- pity that you deleted the screenshots taken at 50 mV/div. Those actually had a higher ENOB (yes, I know that's not quite it...) than at 1 V/div. --- End quote --- I can do them again: |
| bdunham7:
--- Quote from: ebastler on November 12, 2023, 09:18:00 pm ---For the 1 V/div acquisitions, I get 9*1000 mV / 5 mV = 1800, so a bit less than 11 bits. --- End quote --- 9? But yeah, I'm seeing 10+ ENOB, pretty good actually. |
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