ChildOfVision
Member
Hello to everybody!
I finally grabbed one used by good analog scope ! I'm not total newbie, I worked a lot with oscilloscope on my university, I thought I "know everything", but I missed one thing (fortunately, I RTFM before, just in case): differential measuring! I read anything I could find on this forum (and others), but still I'm unsure!
I know about methods of such a measuring, like "A-B" method, but for now I would like only to know one "simple" thing: Can I do measurements with normal probe with grounded scope on battery-powered circuits, OR circuits that work with main transformers (the "real" ones, not SMPS), e.g. some CD-player or so, without worries where I attach "ground crocodile" from probe?
In other words, can I measure e.g. voltage across some resistor, wherever it is placed, in devices described above, so I connect probe tip to one end of resistor and ground clip to the other end?
Of course, if I want to work with both channels, I must care about fact that both scope's inputs are tied together, I know that. Also, I do not intend to measure high voltages, or anything tied directly to main-plug! So my GND-clip on the probe would be possibly tied to the LOCAL GND of the circuit (like "minus" end of an battery).
Sorry if I ask stupid question!
TIA!
I finally grabbed one used by good analog scope ! I'm not total newbie, I worked a lot with oscilloscope on my university, I thought I "know everything", but I missed one thing (fortunately, I RTFM before, just in case): differential measuring! I read anything I could find on this forum (and others), but still I'm unsure!
I know about methods of such a measuring, like "A-B" method, but for now I would like only to know one "simple" thing: Can I do measurements with normal probe with grounded scope on battery-powered circuits, OR circuits that work with main transformers (the "real" ones, not SMPS), e.g. some CD-player or so, without worries where I attach "ground crocodile" from probe?
In other words, can I measure e.g. voltage across some resistor, wherever it is placed, in devices described above, so I connect probe tip to one end of resistor and ground clip to the other end?
Of course, if I want to work with both channels, I must care about fact that both scope's inputs are tied together, I know that. Also, I do not intend to measure high voltages, or anything tied directly to main-plug! So my GND-clip on the probe would be possibly tied to the LOCAL GND of the circuit (like "minus" end of an battery).
Sorry if I ask stupid question!
TIA!