Signal Generator for Noise Search Tester to Improve Noise-measurement and Noise-identification Skills
NTT technical review · 2014
Case study Noise sourcesNoise sources that can lead to faults can exist in a wide variety of electric and electronic devices in addition to communications equipment.Identifying a noise source can therefore be quite difficult.Types of noise sources found in a two-year on-site survey are shown in Fig. 1.It can be seen from the figure that electric and electronic devices that use alternating current (AC) mains power, for example, a Kotatsu and AV (audio-visual) equipment, can be a source of noise.However, because a variety of electric and AbstractThis article introduces recent equipment and methods developed for use in troubleshooting noise faults.This is the twenty-fifth of a bimonthly series on the theme of practical field information on telecommunication technologies.This month's contribution is from the EMC Engineering Group, Technical Assistance and Support Center, Maintenance and Service Operations Department, Network Business Headquarters, NTT EAST.