Tagged Questions

3
votes
1answer
94 views

What's the use of ground coupling on digital oscilloscopes?

What's the practical use of ground coupling on modern DSOs? I know that it can be useful on analog oscilloscopes to adjust the ground exactly to a graticule line, but from what I've seen, most of the ...
2
votes
2answers
349 views

Can we connect battery negative terminal to oscilloscope ground?

I want to test my setup with 200Ah battery and check the outputs on oscilloscope. While testing can I connect battery ground to the oscilloscope ground? Is there any safety risk, as oscilloscope ...
3
votes
1answer
198 views

GND/Vss of 2 circuits with independent power supplies, and usage of scope/logic-analyzer

Probably an elementary electronics question. If I would like to trace waveforms from 2 different circuits with independent power supplies, s.a. an RF transmitter which uses a 9V battery and the RF ...
2
votes
3answers
907 views

Any problems with “floating” an oscilloscope?

I have a Chinese scope with a two-pin power cord and a plastic body, and measure megaohms between its ground terminals and the actual earth, so I believe it has an internal isolation transformer (I ...