9th Harmonic In Telecom Network
9th Harmonic In Telecom Network
(OP)
thread238-190839: What causes a 9th harmonic on the power line?
I've got a 540 Hz tone in a section of the telecomms network in a Caribbean island. It showed up on the exchange MDF as a tone. Frequency checked with a scope. Power Line analyser shows a high 9th harmonic voltage present on the grounded conductor at a number of locations.
I am assuming the two are one and the same. Anybody out there seen this problem before?
I've got a 540 Hz tone in a section of the telecomms network in a Caribbean island. It showed up on the exchange MDF as a tone. Frequency checked with a scope. Power Line analyser shows a high 9th harmonic voltage present on the grounded conductor at a number of locations.
I am assuming the two are one and the same. Anybody out there seen this problem before?





