Having problems with your process controls and electrical instrumentation? The source may be a grounding disturbance known as a ground loop. According to the ANSI/ IEEE Standard Dictionary of ...

Of all the annoyances that can afflict any audio/video home theater or even a simple stereo installation, the notorious “ground loop” may well be the most difficult and persistent one to track down ...

You've just connected your system and there's a buzz or hum that won't go away. You're running your gear through power conditioners and you're beating your head against the wall trying to figure out ...