Measurement of emissions and immunity on telecommunication lines-a universal ISN concept for unshielded cables

Author

Stecher, Manfred

Author_Institution

Rohde & Schwarz, Munchen, Germany

Volume

2

fYear

1999

fDate

1999

Firstpage

695

Abstract

The new editions of CISPR 22/EN 55022 as well as CISPR 24/EN 55024 require testing of emission and immunity on telecommunication ports of information technology equipment (ITE) and telecommunication equipment. Different versions of impedance stabilization networks (ISNs) are required for the different conformance alternatives and cable categories. Since there is a great variety of systems with different pin connections of the Western RJ45 connector, a solution with a basic universal network using a universal interface and a series of adapters has been chosen. A high-performance balun has been developed for verification and calibration. Imperfections of the CISPR 22 standard are discussed together with characteristics and proposed amendments of CISPR 16-1 for ISN characterization and calibration

Keywords

calibration; electric connectors; electric impedance; electromagnetic interference; measurement standards; stability; telecommunication cables; telecommunication equipment testing; telecommunication transmission lines; CISPR 16-1; CISPR 22 standard; CISPR 22/EN 55022; CISPR 24/EN 55024; Western RJ45 connector; cable categories; calibration; emission measurement; high-performance balun; immunity measurement; impedance stabilization networks; information technology equipment; pin connections; telecommunication equipment; telecommunication lines; telecommunication ports; universal ISN concept; universal interface; unshielded cables; verification; Cable shielding; Calibration; DSL; Electromagnetic compatibility; Frequency; Immunity testing; Information technology; Standards publication; Telecommunication standards; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 1999 IEEE International Symposium on

Conference_Location

Seattle, WA

Print_ISBN

0-7803-5057-X

Type

conf

DOI

10.1109/ISEMC.1999.810102

Filename

810102