This is a re-do of a video I did over a year ago, using a fixed camera position and adding a few more details (no shaky-cam!). It shows the use of a Tektronix MDO4000 series Mixed Domain Oscilloscope to track down the source of a transient RF / EMI signal through the use of RF triggering, and multiple time-correlated traces to characterize the repetitive nature of the transient signal and identify a potential cause for this transient emission.