Thank you guys for responding.
I have one more question. What if my oscilloscope is a four channel scope? Can I use two of the proves to do the differential measurement while at the same time use the other two to do measurements as usual? Would this cause any issue?
Sorry if this is a dumb question, I just need to make sure.
Thanks.
In main stream yes. And yes if all these signals have synch with each others and time scale do not differ much of.
Example if you use CH1 and CH2 for poor mans differential you also mostly use trigger for this.
Other channels, in this case CH3 and 4 have same trigger source.
If you want look signals what are not syncronized with this signal what is your trigger source then you see more os less garbage (with some rare exeptions)
There is some scopes what have ALT trigger and also then more rare oscilloscopes what have ALT trigger with Dual time base (what is example in Siglent SDS1000 series with 2 channels). I have not seen 4 channel digital scope what have 4 channel ALT and never I have seen with Quad timebase. (with some analog oscilloscopes also this is possible.)