Products > Test Equipment
Spikes and noise on Rigol DHO814
Fungus:
--- Quote from: ebastler on March 12, 2024, 01:44:24 pm ---It is good practice to move the power supply as far away from the scope and the device under test as possible, and to definitely ground the scope (both for EMC and safety reasons).
--- End quote ---
Ground won't make any difference to this.
It's usually something external.
eTobey:
--- Quote from: Fungus on March 13, 2024, 05:00:47 am ---Ground won't make any difference to this.
--- End quote ---
Wrong! It made it better. Altough it wasnt huge.
I have already proven, that the problem is the powersupply, so turning anything else would make no difference. :palm:
Fungus:
--- Quote from: eTobey on March 13, 2024, 07:51:43 am ---I have already proven, that the problem is the powersupply, so turning anything else would make no difference. :palm:
--- End quote ---
Where did you prove that?
eTobey:
Just in my first post! I found the same frequency on the cable, and doing measures for this, got rid of that spikes quite a bit!
Did you actually read what i wrote, and looked at the pictures???
eTobey:
--- Quote from: jim_griff on March 13, 2024, 12:21:35 am ---Hi there. My DHO804 arrived today. I found the same issue with the switching USB-C PD PSU supplied with the Rigol. Haven't tried any other supplies as I don't own any, but will be figuring out a way of dealing with it. It shouldn't be this way.
--- End quote ---
I only just watched your pictures, but there are no spikes like mine. You should scale it like i had, to see if this is really the same problem. You could also measure on the cable with a coil.
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