At any point in a transmission system , the ratio of the circuit noise at that point to an arbitrary level chosen as a reference. ( 188 ) Note: The circuit noise level is usually expressed in dBrn0, signifying the reading of a circuit noise meter, or in dBa0 , signifying circuit noise meter reading adjusted to represent an interfering effect under specified conditions.
CIRCUIT NOISE LEVEL
Meaning of CIRCUIT NOISE LEVEL in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012