DBM ROOFING LLC

YOUNGSVILLE, LA 70592

Commercial Contractor (Certified)

the free encyclopedia Power level referenced to one milliwatt For other usesmicrowave and fiber-optical communication technicians &ampengineers to measure the power of system transmissions on a log scalemW) rather than a milliwatt. The decibel ( dB ) is a dimensionless unitused for quantifying the ratio between two valuessuch as signal-to-noise ratio . The dBm is also dimensionless&#911 &#932 &#93but since it compares to a fixed reference valuethe unit decibel (dB) for relative quantitieswithout any suffixmW) = 10&#160dB to comply with the SI. &#913 &#93In audio and telephonydBm is typically referenced relative to the 600-ohm impedance &#914 &#93commonly used in telephone

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