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| Rigol Rubbish DG800 - An expensive piece of Junk |
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| Aldo22:
--- Quote from: Njk on May 14, 2024, 09:32:32 am ---Sure. But keep in mind that typical modern generator has its waveform output connector internally grounded. That's not the case with the obsolete instrument. --- End quote --- My cheap FY3224S also came without grounding, with a two-core mains cable. Is that the same? Of course, I then pulled in a 3-core cable and connected PE to the BNC connectors (switchable). |
| Njk:
--- Quote from: Aldo22 on May 15, 2024, 07:21:33 am ---My cheap FY3224S also came without grounding, with a two-core mains cable. Is that the same? Of course, I then pulled in a 3-core cable and connected PE to the BNC connectors (switchable). --- End quote --- That does not count. I meant "grounded" is connected to the chassis, no matter if the chassis is grounded or not. IMHO a 3-core electrical arrangement brings more harm to T&M equipment than good. It's not a CE equipment, it's for professional use and that's normal. It was a common practice (at least here) that every instrument has a 2-core mains connection and it's the user's responsibility to connect the chassis of every instrument on the bench with PE in single point, using a dedicated wire. To avoid ground loops. Electrical safety of 3-core arrangement seems more a marketing/legal point that makes the instrument fool-proof but frequently results in inconvenience for all the others. |
| Aldo22:
@Njk: Thanks for the explanation. Interesting. The FY3224S does not actually have a chassis in that sense. The BNCs are soldered directly to the PCB and the housing is made of plastic. I put in a three core wire because otherwise the BNC have 94VAC against earth, which made me a bit worried. But as I said, I installed a switch so that it can be disconnected again. |
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