Power Line Communication (PLC)

Power line communication (PLC) utilizes data transmitted over power lines by overlaying regular power with high-frequency signals.  It is a component of "Smart Power" and is quite common in the industry.  OnFILTER makes several products for PLC:

Power line EMI adapters help to observe PLC signals on power lines using regular oscilloscopes or spectrum analyzers by completely blocking 50/60Hz AC power voltage and by providing galvanic separation between power lines and your instrument.  Our MSN series of adapters satisfies all major international standards for power line communication.  MSN15 and MSN17 adapters offer the broad frequency range - in excess of 150 MHz - and cover HomePlug AV, HomePlug AV2, IEEE 1901, ARIB, all CENELEC bands, and others.

CleanSweep® AC EMI filters and filtered PDUs effectively block PLC signals which is helpful in case of collision of the signals and for enhancing data security.  If power line is too noisy due to EMI from equipment, CleanSweep® EMI filters can help to "clean it up" for better signal quality.  

PLC signal on power line as seen using MSNxxx EMI Adapters

Relevant Products:

HomePlug AV2 Spectrum Measured with MSN15 EMI Adapter

Questions on PLC?  Ask Us:

What is EMI?  A formal definition of Electromagnetic Interference is that it is a malfunction of equipment caused by excessive high-frequency signals, either radiated (via air), or conducted (via wires).  Often it is also called RFI - Radio Frequency Interference.  Most conventionally, EMI is understood as undesirable high-frequency signals, and EMI filters as devices that suppress such signals while preserving the "good" ones.         

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U.S. Patents 10,263,591; 9,076,806 All specifications are subject to change without notice.

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