BS EN 61000-4-21:2011 - Electromagnetic compatibility (EMC). Testing and measurement techniques. Reverberation chamber test methods

BS EN 61000-4-21:2011

Electromagnetic compatibility (EMC). Testing and measurement techniques. Reverberation chamber test methods

Status : Current, Under review   Published : July 2011



IEC 61000-4-21:2011 considers tests of immunity and intentional or unintentional emissions for electric and/or electronic equipment and tests of screening effectiveness in reverberation chambers. It establishes the required test procedures for performing such tests. Only radiated phenomena are considered. The objective of IEC 61000-4-21:2011 is to establish a common reference for using reverberation chambers to evaluate the performance of electric and electronic equipment when subjected to radio-frequency electromagnetic fields and for determining the levels of radio-frequency radiation emitted from electric and electronic equipment. IEC 61000-4-21:2011 does not intend to specify the tests to be applied to a particular apparatus or system. Its main aim is to give a general basic reference to all concerned product committees of the IEC. The product committees should select emission limits and test methods in consultation with CISPR. The product committees remain responsible for the appropriate choice of the immunity tests and the immunity test limits to be applied to their equipment. Other methods, such as those covered in IEC 61000-4-3, CISPR 16-2-3 and CISPR 16-2-4 may be used. This second edition cancels and replaces the first edition published in 2003. This edition constitutes a technical revision and includes the following significant technical changes with respectto the first edition:

- In Clause 8, the use and specifications of E-field probes for application to reverberation chambers has been added.

- In Annex A, additional guidance and clarifications on the use of reverberation chambers at relatively low frequencies of operation (i.e., close to the lowest usable frequency of a given chamber) are given, and its implications on the estimation of field uncertainty are outlined.

- In Annex B, symmetric location of the field probes when the chamber exhibits cylindrical symmetry has been disallowed, as such placement could otherwise yield a false indication of field uniformity and chamber performance at different locations.

- Annex C now contains more quantitative guidance on the setting of the maximum permissible stirring speeds that warrant quasi-static conditions of operation for chamber validation and testing.

- In Annex D, a requirement for the EUT and equipment not to occupy more than 8 % of the total chamber volume in immunity testing has been added.

- Annex E has been extended with further guidance on the value of EUT directivity to be used in the estimation of radiated power and field.

- In Annex I, some clarifications on antenna efficiency measurements have been added.

- A new Annex K has been added that covers measurement uncertainty in reverberation chambers.

Standard NumberBS EN 61000-4-21:2011
TitleElectromagnetic compatibility (EMC). Testing and measurement techniques. Reverberation chamber test methods
StatusCurrent, Under review
Publication Date31 July 2011
Normative References(Required to achieve compliance to this standard)IEC 61000-4-3:2006/AMD 1:2007, CISPR 16-2-3, EN 55016-2-3:2010, CISPR 16-1-1, IEC 60050-161:1990, IEC 60050-161:1990/AMD 1:1997, IEC 60068-1, EN 61000-4-3:2006/AMD 1:2008, EN 55016-1-1:2010, IEC 61000-4-3:2006, IEC 60050-161:1990/AMD 2:1998, EN 61000-4-3:2006, EN 60068-1
Informative References(Provided for Information)IEC 60050-705:1995, IEC 60050-393:2003, CISPR 16-1-3, CISPR 16-1-2, CISPR 16-1-5, IEC 60050-151:2001, IEC 60050-801:1994, IEC 60050-712:1992, IEC 60050-723:1997, IEC 61000-4-6, IEC 60050-723:1997/AMD 1:1999, CISPR 16-2-1, CISPR 16-2-4, IEC 60050-731:1991, CISPR 16-1-4, IEC 60050-394:2007, IEC 60050-702:1992, CISPR 16-2-2, IEC 60050-121:1998, IEC 60050-726:1982, CISPR 22
ReplacesBS EN 61000-4-21:2003
International RelationshipsCLC/TS 61496-3:2003,EN 61000-4-21:2011,IEC 61000-4-21:2011
Draft Superseded By08/30190852 DC17/30340059 DC
DescriptorsReverberation rooms, Electromagnetic radiation, Reverberation, Electrical equipment, Electromagnetic fields, Radiofrequencies, Emission, Performance testing, Electronic equipment and components, Radiation measurement, Electromagnetic compatibility, Electric power system disturbances
Title in FrenchCompatibilité électromagnétique (CEM). Techniques d'essai et de mesure. Méthodes d'essai en chambre réverbérante
Title in GermanElektromagnetische Verträglichkeit (EMV). Prüf- und Messverfahren. Verfahren für die Prüfung in der Modenverwirbelungskammer
ISBN978 0 580 64788 8
File Size3.284 MB

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