This Micsig video shows how GaN devices can blow up when being tested with a normal differential probe. Micsig's OIP Pro Series Optical-fiber Isolated Probes unveil the real signal you've never seen! Micsig's exclusive SigOFIT ™ optical isolation technology, powered by laser, has extremely high common-mode rejection ratio and Isolation voltage, and helps engineers to see the true, undistorted signal within the probe's bandwidth.
https://tinyurl.com/saeligOIP