Products > Test Equipment
Rigol DHO800 memory depth / bandwidth upgrades and noise level!
tautech:
--- Quote from: Fungus on November 08, 2023, 07:40:35 am ---
--- Quote from: tautech on November 08, 2023, 07:04:01 am ---CH1 in white letters indicates which channel menu is selected. ;)
--- End quote ---
This?
--- End quote ---
Yes, the channel menu indicator which matches the channel tab info you conveniently deleted. :horse:
rf-loop:
--- Quote from: Fungus on November 08, 2023, 08:00:52 am ---
--- Quote from: rf-loop on November 08, 2023, 07:54:42 am ---
--- Quote from: bdunham7 on November 07, 2023, 01:12:39 am ---
--- Quote from: 2N3055 on November 06, 2023, 09:54:58 pm ---Now people can compare to other scopes with same settings..
--- End quote ---
--- End quote ---
;) Except that @Fungus have used 500kSa/s and 10k acquisition length.
--- End quote ---
Nope, this is the image being referred to by 2N3055 :
I don't think it will make any difference for RMS though.
--- End quote ---
Of course. All this is explained in old Agilent paper what all know. Evaluating Oscilloscope Vertical Noise Characteristics, Application Note 1558
With this kind of random noise trace visual fatness rise some amount when displayed data density rise (because noise is random and with more data we get more probability to catch more highest peak values..
But this leads to one thing.
If we use very very different amount of data... as in my previous message I told your one image have 5k data on display and other peoples (@bdunham7) image with other oscilloscope have 4000 times and 2800 times more data on display what produce more "fat" trace and many peoples may only fast look images and mind may produce imagination about noise level from trace fatness instead of measured numbers. We all know how peoples mind produce imaginations.
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.
Fungus:
--- Quote from: tautech on November 08, 2023, 08:49:02 am ---Yes, the channel menu indicator which matches the channel tab info you conveniently deleted. :horse:
--- End quote ---
I deleted them because I couldn't see any indication there that one of them was highlighted or related to the the bottom menu.
Is there anything else on screen to indicate which channel is selected apart from the white "CH1"?
tautech:
--- Quote from: Fungus on November 08, 2023, 09:08:41 am ---
--- Quote from: tautech on November 08, 2023, 08:49:02 am ---Yes, the channel menu indicator which matches the channel tab info you conveniently deleted. :horse:
--- End quote ---
I deleted them because I couldn't see any indication there that one of them was highlighted or related to the the bottom menu.
Is there anything else on screen to indicate which channel is selected apart from the white "CH1"?
--- End quote ---
Yes, the active to the controls and selected channel trace is always atop all other channels.
The channel button is illuminated and that channel menu is shown unless you use the Hide Menu feature.
Fungus:
--- 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!
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