EN 62333-2:2006

Noise suppression sheet for digital devices and equipment - Part 2: Measuring methods

Specifies the methods for measuring the electromagnetic characteristics of a noise suppression sheet. Those methods are intended to provide useful and repeatable measurements to characterize the performance of the noise suppression sheets, so that manufacturers and their customers are able to obtain the same results. Is to be used with IEC 62333-1.

Rauschunterdrückungsschicht für digitale Geräte und Einrichtungen - Teil 2: Messverfahren

Plaque réduisant le bruit des dispositifs et appareils numériques - Partie 2: Méthodes de mesure

La CEI 62333-2:2006 spécifie les méthodes de mesure des caractéristiques électromagnétiques d'une plaque réduisant le bruit. Ces méthodes sont destinées à fournir des mesures utiles et reproductibles pour caractériser les performances des plaques réduisant le bruit, de sorte que les fabricants et leurs clients puissent obtenir les mêmes résultats. Cette publication doit être lue conjointement avec la CEI 62333-1:2006.

Protišumni list za digitalne naprave in opremo – 2. del: Merilne metode (IEC 62333-2:2006)

General Information

• Status: Withdrawn
• Publication Date: 05-Jul-2006
• Withdrawal Date: 31-May-2009
• ICS: 29.100.10 - Magnetic components
• Technical Committee: CLC/SR 51 - Magnetic components and ferrite materials
• Drafting Committee: IEC/TC 51 - IEC_TC_51
• Parallel Committee: IEC/TC 51 - IEC_TC_51
• Ref Project: SIST EN 62333-2:2006 - Noise suppression sheet for digital devices and equipment -- Part 2: Measuring methods

Relations

• Amended By: EN 62333-2:2006/A1:2015 - Noise suppression sheet for digital devices and equipment - Part 2: Measuring method
• Effective Date: 23-Jan-2023

Standards Content (Sample)

SLOVENSKI SIST EN 62333-2:2006

STANDARD
oct 2006
Protišumni list za digitalne naprave in opremo – 2. del: Merilne metode (IEC
62333-2:2006)
Noise suppression sheet for digital devices and equipment – Part 2: Measuring
methods (IEC 62333-2:2006)
ICS 33.160.01 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD
EN 62333-2
NORME EUROPÉENNE
July 2006
EUROPÄISCHE NORM
ICS 29.100.10
English version
Noise suppression sheet for digital devices and equipment
Part 2: Measuring methods
(IEC 62333-2:2006)
Plaque réduisant le bruit des dispositifs  Rauschunterdrückungsschicht für
et appareils numériques digitale Geräte und Einrichtungen
Partie 2: Méthodes de mesure Teil 2: Messverfahren
(CEI 62333-2:2006) (IEC 62333-2:2006)

This European Standard was approved by CENELEC on 2006-06-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in two official versions (English and German). A version in any other language
made by translation under the responsibility of a CENELEC member into its own language and notified to the
Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62333-2:2006 E
Foreword
The text of document 51/853/FDIS, future edition 1 of IEC 62333-2, prepared by IEC TC 51, Magnetic
components and ferrite materials, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 62333-2 on 2006-06-01.
This Standard is to be used in conjunction with EN 62333-1.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2007-03-01
– latest date by which the national standards conflicting
(dow) 2009-06-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 62333-2:2006 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 62333-2:2006
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

1) 2)
IEC 62333-1 - Noise suppression sheet for digital devices EN 62333-1 2006
and equipment
Part 1: Terms and definitions
CISPR 16-1 Series Specification for radio disturbance and EN 55016-1 Series
immunity measuring apparatus and methods
Part 1: Radio disturbance and immunity
measuring apparatus
1) 2)
CISPR 22 - Information technology equipment - Radio EN 55022 2006
(mod) disturbance characteristics - Limits and
methods of measurement
1)
Undated reference.
2)
Valid edition at date of issue.

INTERNATIONAL IEC
STANDARD 62333-2
First edition
2006-05
Noise suppression sheet for digital
devices and equipment –
Part 2:
Measuring methods
 IEC 2006  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale S
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 2 – 62333-2  IEC:2006(E)
CONTENTS
FOREWORD.3

1 Scope.5
2 Normative references.5
3 General.5
4 Measuring methods
4.1 Intra-decoupling ratio: R .6
da
4.2 Inter-decoupling ratio: R .11
de
4.3 Transmission attenuation power ratio: R .15
tp
4.4 Radiation suppression ratio: R .18
rs
Figure 1 – Schematic diagram of a pair of antennas and NSS under test .6
Figure 2 – A pair of antennas and NSS under test .6
Figure 3 – Frequency response of coupling between a pair of antennas.7
Figure 4 – Recommended examples of small loop antennas for the measurement .8
Figure 5 – Cross sectional view of the measuring configuration .9
Figure 6 – Schematic diagram of the measuring configuration .10
Figure 7 – Schematic diagram of a pair of loop antennas and test sample .12
Figure 8 – Schematic diagram of a pair of antenna and test sample.12
Figure 9 – Schematic diagram of the measuring configuration .13
Figure 10 – Schematic diagram of the measuring method for transmission attenuation
power ratio R .15
tp
Figure 11 – Data examples of the measurement results .18
Figure 12 – Measurement system diagram of R .19
rs
Figure 13 – Schematic diagram of test fixture .19
Figure 14 – Size and structure of test fixture.20
Figure 15 – Test sample attachment on test fixture .22
Figure 16 – Test fixture setup on turntable.22

Table 1 – Merits and limitations of the recommended antennas .9
Table 2 – Dimensions of loop antennas .9
Table 3 – Dimensions of test sample .10
Table 4 – Dimensions of loop antennas .13
Table 5 – Dimensions of test fixture .16
Table 6 – Dimensions of test sample .16
Table 7 – Dimensions of test fixture .20
Table 8 – Dimensions of test sample .21

62333-2  IEC:2006(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NOISE SUPPRESSION SHEET
FOR DIGITAL DEVICES AND EQUIPMENT –

Part 2: Measuring methods
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards. Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)“). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62333-2 has been prepared IEC technical committee 51: Magnetic
components and ferrite materials.
This standard is to be used in conjunction with IEC 62333-1.
The text of this standard is based on the following documents:
FDIS Report on voting
51/853/FDIS 51/861/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – 62333-2  IEC:2006(E)
IEC 62333 consists of the following parts, under the general title Noise suppression sheet for
digital devices and equipment:
Part 1: Definitions and general properties
Part 2: Measuring methods
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

62333-2  IEC:2006(E) – 5 –
NOISE SUPPRESSION SHEET
FOR DIGITAL DEVICES AND EQUIPMENT –

Part 2: Measuring methods
1 Scope
This part of IEC 62333 specifies the methods for measuring the electromagnetic
characteristics of a noise suppression sheet. Those methods are intended to provide useful
and repeatable measurements to characterize the performance of the noise suppression
sheets, so that manufacturers and their customers are able to obtain the same results.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendment) applies.
IEC 62333-1, Noise suppression sheet for digital devices and equipment – Part 1: Definitions
and general propert
...