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	BS EN 55022:1998 CISPR 22:1997 Information technology equipment -Radio disturbance characteristics -Limits and methods of Measurement Buy BSI Collections Online subscriptions to multiple documents on various subjects Info To speak with an IHS Subject Matter Expert call 1-888-752-0334, outside the US/Canada call 303-397-2892. More Top BSI Standards...

BS EN 55022:1998 CISPR 22:1997 - Information technology equipment -Radio disturbance characteristics -Limits and methods of Measurement

Cross-references
The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled "International Standards Correspondence Index", or by using the "Search" facility of the BSI Electronic Catalogue or of British Standards Online.

This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.

Summary of pages
This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 47 and a back cover.

The BSI copyright notice displayed in this document indicates when the document was last issued.

Foreword
The text of document CISPR/G/112/FDIS, future edition 3 of CISPR 22, prepared by CISPR SC G, Interference relating to information technology equipment, was submitted to the IEC-CENELEC parallel vote.

The text of document CISPR/G/121/FDIS, a further part of CISPR 22, which failed to pass the IEC-CENELEC parallel vote within CENELEC, together with the common modifications prepared by SC 210A, EMC Products, of Technical Committee CENELEC TC 210, EMC, was submitted to the Unique Acceptance Procedure.

The combined text of edition 3 of CISPR 22, the common modifications in amendment A2:1997 to EN 55022:1994 and those for CISPR/G/121/FDIS were approved by CENELEC as EN 55022 on 1998-08-01.

This European Standard supersedes EN 55022:1994 + corrigendum August 1997 + A1:1995 + corrigendum August 1997 + A2:1997.

The following dates were fixed:

Annexes designated "normative" are part of the body of the standard.

Annexes designated "informative" are given for information only.

In this standard, Annex A, Annex B, Annex C and Annex ZA are normative and Annex D and Annex E are informative.

Annex ZA has been added by CENELEC.

Foreword to amendment A1
The text of document CISPR/G/177/FDIS, future amendment 1 to CISPR 22:1997, prepared by CISPR SC G, Interference relating to information technology equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A1 to EN 55022:1998 on 2000-08-01.

The following dates were fixed:

Foreword to amendment A2

The text of document CISPR/1/41/FDIS, future
amendment 2 to CISPR 22:1997, prepared by
CISPR SC 1, Electromagnetic compatibility of
information technology equipment, multimedia
equipment and receivers, was submitted to the
IEC-CENELEC parallel vote and was approved by
CENELEC as amendment A2 to EN 55022:1998
on 2002-12-01.

The following dates were fixed:
Annexes designated "normative" are part of the body of the standard. In this standard, Annex ZA is normative.

- latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1999-02-01

- latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2005-08-01

- latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2001-05-01

- latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 2005-08-01

- latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2003-09-01

- latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 2005-12-01

Introduction
The scope is extended to the whole radio-frequency range from 9 kHz to 400 GHz, but limits are formulated only in restricted frequency bands, which is considered sufficient to reach adequate emission levels to protect radio broadcast and telecommunication services, and to allow other apparatus to operate as intended at reasonable distance.

Scope and object
This publication applies to ITE as defined in 3.1. Procedures are given for the measurement of the levels of spurious signals generated by the ITE and limits are specified for the frequency range 9 kHz to 400 GHz for both class A and class B equipment. No measurements need be performed at frequencies where no limits are specified. The intention of this publication is to establish uniform requirements for the radio disturbance level of the equipment contained in the scope, to fix limits of disturbance, to describe methods of measurement and to standardize operating conditions and interpretation of results.

Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this publication. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this publication are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below.

Members of IEC and ISO maintain registers of currently valid International Standards. IEC 60083:1997, Plugs and socket-outlets for domestic and similar general use standardized in member countries of IEC

• IEC 61000-4-6:1996, Electromagnetic compatibility (EMC) - Part 4: Testing and measurement techniques - Section 6: Immunity to conducted disturbances, induced by radio-frequency fields
• CISPR 11:1990, Limits and methods of measurement of electromagnetic disturbance characteristics of industrial, scientific, and medical (ISM) radio-frequency equipment
• CISPR 13:2001, Sound and television broadcast receivers and associated equipment -Radio disturbance characteristics - Limits and methods of measurement
• CISPR 16-1:1993, Specification for radio disturbance and immunity measuring apparatus and methods - Part 1: Radio disturbance and immunity measuring apparatus
• CISPR 16-2:1996, Specification for radio disturbance and immunity measuring apparatus and methods - Part 2: Methods of measurement of disturbances and immunity ISO/IEC 11801:1995, Information technology - Generic cabling for customer premises