I am trying to measure the noise at the output of my buck regulator. I am getting some ripples. I feel that the ground loop caused by my oscilloscope GND ref might have a small impact here.
I was thinking of approaching this via the tip-barrel approach. Now, I wanted to know if I need specialised probes for the TIP-Barrel approach.
Now, the probe has a met section shown in the image above. Is that GND? If yes, in the tip-barrel approach, is it ok if I just connect a wire from here to my GND reference in the PCB?
This is shown in the image below. Will just a piece of wire from here to my PCB act as a GND?