Recommended · for beginners
#136: What is a dB, dBm, dBu, dBc, etc. on a Spectrum Analyzer?
Why people recommend it
A clear explanation of what decibels mean and how dB ratios relate to power, voltage and references like dBm, offered to anyone confused by the units.
Watch for: Suits anyone meeting dBm or dBV for the first time
In their words
There is a great video on Youtube that explains this relationship.
Enemy Of the State Machine on electronics.stackexchange.com, Jul 2014. CC BY-SA.