decibels above reference coupling
decibels above reference coupling
[′des·ə·bəlz ə¦bəv ′ref·rəns ‚kəp·liŋ] (electricity)
A measure of the coupling between two circuits, expressed in relation to a reference value of coupling that gives a specified reading on a specified noise-measuring set when a test tone of 90 dBa is impressed on one circuit. Abbreviated dBx.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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