A specified level of power, voltage or current in a circuit or system, to which all other levels of those quantities are referred, usually as a ratio expressed in dB. 1 mW is frequently taken as a reference signal power level, and is described as 0 dBm zero decibels with respect to 1 mW. If voltages or currents are taken as reference levels, then it is customary and desirable to state the impedance level at which the measurement is to take place.

Link to This Definition

Did you find this definition of REFERENCE LEVEL helpful? You can share it by copying the code below and adding it to your blog or web page.
Edited and fact checked by Pam: Google +