[Petteri Aimonen] presents for us a modular differential probe, as his entry into the ... to be probed and fed to an oscilloscope via a BNC cable. PCB Spark gap for primary ESD protection It ...

The video goes into a few other interesting tips, one highlight is using a ground-tied PCB perimeter zone, with wavelength-of-interest via stitching. This will reduce EMC side emissions from the ...