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Convention Paper

Testing for Radio-Frequency Common Impedance Coupling (the "Pin 1 Problem") in Microphones and Other Audio Equipment

Authors: Brown, Jim

AES Convention 115 · Paper 5897 · October 2003

Abstract

It has been shown that a primary cause of VHF and UHF interference to professional condenser microphones is inadequate termination within the microphone of the shield of the microphone's output wiring, a fault commonly known as the pin 1 problem. Tests using only audio frequency test signals generally fail to expose susceptibility to radio frequency (RF) interference. Simple RF tests for pin 1 problems in microphones and other audio equipment are described that correlate well with EMI observed in the field.

Details

Published in
AES Convention 115
AES Convention
115
Paper number
5897
Publication date
October 6, 2003
Session subject
Instrumentation and Measurement
Affiliation
Audio Systems Group, Inc., Chicago, IL (See document for exact affiliation information.)
Type
Convention Paper