Products > Test Equipment
Rigol DP832 - Firmware list and bugs
mcinque:
@pascal_sweden:
As Dave said:
--- Quote from: EEVblog on April 14, 2015, 12:22:54 am ---...
I don't see the issue, you'll get this with almost any supply, capacitive coupling between output and mains earth is quite normal.
...
If for some reason this is an issue with your system, mains output reference your supply, that is what the earth terminal is on the front panel for.
--- End quote ---
pascal_sweden:
The guy on the video did mains output reference his supply, as you can see with the yellow cabling in the video.
mcinque:
When he's doing all his tests and reads high voltages, isn't the yellow cable disconnected from the earth terminal?
pascal_sweden:
Yes, you are right! I can also see a "crack" in the chassis of the power supply on the left down side.
Looks like he had some issue with the chassis.
Andy Watson:
--- Quote from: pascal_sweden on July 25, 2015, 02:46:43 pm ---
--- Quote from: Owen on March 28, 2015, 07:52:08 am ---For your list of bugs and design flaws in the DP832: Youtuber Jason Li investigated that Rigol's DP832 seems not to be isolated to earth. There's an AC coupling between earth and ground (exceed 32 Vac). Here's the video:
--- End quote ---
Is this problem fixed in the mean time?
--- End quote ---
Is it a problem? Unless there is a significant current flowing I would say that it is not a problem, it is typical "pick up" that you will find in any environment where mains AC fields are present. Quality power supplies employ a transformer with an electrostatic screen to reduce mains coupling, but it is still possible for capacitive coupling to occur on the internal wiring.
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