Limits, test methods and ISNs for emission and immunity on unshielded telecommunication ports

Author

Stecher, Manfred

Author_Institution

Rohde & Schwarz GmbH & Co. KG, Munchen, Germany

fYear

1999

fDate

1999

Firstpage

71

Lastpage

74

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 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 is used for verification and calibration. Imperfections of the CISPR 22 standard are discussed together with suggestions for improved testing

Keywords

electric connectors; electromagnetic compatibility; electromagnetic interference; telecommunication equipment; telecommunication standards; CISPR 22 standard; CISPR 22/EN 55022; CISPR 24/EN 55024; EMC; EMI; ISNS; RJ45 connector; cable categories; calibration; conformance alternatives; emission; high-performance balun; immunity; impedance stabilization networks; information technology equipment; telecommunication equipment; unshielded telecommunication ports; verification; Cable shielding; Connectors; DSL; Electromagnetic compatibility; Frequency; Immunity testing; Impedance; Information technology; Telecommunications; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 1999 International Symposium on

Conference_Location

Tokyo

Print_ISBN

4-9980748-4-9

Type

conf

DOI

10.1109/ELMAGC.1999.801265

Filename

801265