Products > Test Equipment
Powerbanks tested with DHO800/900
Houseman:
Thank You all. Would like to know a way to measure how much noise in injected into the rigol via power supply with this setup.
And why the power supply provides 12V instead of 15V provided by the powerbank
ebastler:
--- Quote from: Houseman on February 16, 2024, 04:48:13 pm ---And why the power supply provides 12V instead of 15V provided by the powerbank
--- End quote ---
Where "the power supply" means which power supply??
Only the very early power supplies shipped with beta units (and maybe to early Chinese customers) were of the cheap fixed 12V type described in the user manual. All DHO800/900 scopes shipped to the Western world should come with proper supplies which negotiate the voltage via the USB PD protocol, and should negotiate 15V.
Rigol have just neglected to update the user manual. Or did you actually measure 12V being used with your scope's power supply?
Demon Xanth:
Baesus 140W powerbank DOES NOT work works on the C2 output, but not the C1 input/output. Very curious.
Edit:
The C2 and USB-A outlets cut out due to lack of current, the C1 seems to have a handshaking issue. The 65W works fine though.
shapirus:
This one works too:
The PSU here is a 69W Ugreen. The battery is a 3s LiPo.
Curiously, just like the Baseus mentioned in the previous post, it doesn't work (or the scope doesn't work) on port USB-C1. The other two, USB-C2 and type A, work fine.
update: I checked the specs, and now it's obvious: the specs state 20W max on port C1, 60W max on port C2. But then again, it says max 22.5W on port USB-A, and the scope works fine powered from that port.
Houseman:
Nice!.
Isn't it a little bit undervoltage powered?
I see 11,1V instead of minimum 12V
How long does it last?
Regards
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