Tracking down sources of EMI/RFI

In my electronics lab, I am plagued with some odd high-frequency interference. When I’m looking at low-level signals with my scope set to 10, 20, or 50 mV/division, I can see repetitive waveforms with ~100 kHz and ~7 MHz content. This is especially insidious: It’s even present between adjacent earth ground connections. To track noise […] The post Tracking down sources of EMI/RFI appeared first on…