US Patent 7,791,353 B2
How it Works
Loop Slooth Exciter, Detector modules are both inductively coupled to cable under test -- no direct physical connection.
Linking Exciter to cable is electrically equivalent to splicing cable and inserting a signal generator at splice.
If cable is part of a loop, Exciter drives a small 100 kHz diagnostic current around loop. Detector picks up small magnetic field produced by this current and high-gain tuned amplifier in Detector drives LED and (some models) meter.
If ground loop exists, current flows around the loop, Detector LED illuminates and optional meter produces reading. If no ground loop, no current flows, Detector LED does not illuminate, and optional meter has no reading.
Ground loop path traced by moving Detector.
Loop Slooth Exciter, Detector modules are both inductively coupled to cable under test -- no direct physical connection.
Linking Exciter to cable is electrically equivalent to splicing cable and inserting a signal generator at splice.
If cable is part of a loop, Exciter drives a small 100 kHz diagnostic current around loop. Detector picks up small magnetic field produced by this current and high-gain tuned amplifier in Detector drives LED and (some models) meter.
If ground loop exists, current flows around the loop, Detector LED illuminates and optional meter produces reading. If no ground loop, no current flows, Detector LED does not illuminate, and optional meter has no reading.
Ground loop path traced by moving Detector.
Find ground loops fast!
-eliminate electical interference, fix star grounding
-eliminate electical interference, fix star grounding
US Patent 7,791,353 B2
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