| Products > Test Equipment |
| Suitable USB-C powerbank for Rigol DHO800/900 series |
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| DaneLaw:
--- Quote from: Pinkus on February 08, 2024, 11:33:08 am ---Note for the post above: Search at Aliexpress for "ripple test board". The set (USB A und USB C) costs about $30. --- End quote --- Doesn't do much at my end, ..https://aliexpress.com/w/wholesale-ripple-test-board.html?spm=a2g0o.productlist.search.0 but then again quite a lot of listings are behind-region lock in 2024 on Aliexpress, so could be that you see listings I dont, not to mention these adapters are quite old, so you can't take for granted they are still for sale. Maybe you could share an active purchase link, as I cant.. hence none in stock for quite a while. In regards to powerbanks and certain Rigol products, worth noting they seem to consume a roundtrip to the moon & back in their breathing standby-mode atleast on this unit I got, that aint a DHxxx but a signal gen [DG800PRO) that uses the same form-factor, but it's a new product not released yet in the west, so could also be down to a far from optimal firmware. above 6 watts in a closed with power-status (FY6900 around 0.4w & DG800PRO 6watt) https://i.imgur.com/wtk7uhu.mp4 |
| Houseman:
Is it a BNC connector connected to the VUSB and ground via a resistor and a capacitor? How do you use it? Thank you |
| flaotte:
I just want to double check. If oscilloscope is powered from power bank, is it save to measure mains/mains coupled wires? 300V insulation means single phase at a time? |
| ebastler:
--- Quote from: flaotte on March 11, 2024, 10:17:57 am ---I just want to double check. If oscilloscope is powered from power bank, is it save to measure mains/mains coupled wires? 300V insulation means single phase at a time? --- End quote --- You run less danger of damaging the scope that way -- since it is not grounded, you will not cause a short circuit if you connect the probe's ground clip to a high potential. But you much increase the danger of damaging yourself! While you will not notice a problem with the scope's functionality if you make that connection, it will connect parts of the scope which you can touch -- nost notably the BNC connectors, and the shells of any BNC plugs you connect to them -- to that high potential. You can potentially kill yourself by tuoching them. So, please don't use the scope to measure mains voltage that way! |
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