CISPR 24:2010

Information technology equipment - Immunity characteristics - Limits and methods of measurement

CISPR 24:2010 applies to information technology equipment (ITE) as defined in CISPR 22. The object of this publication is to establish requirements that will provide an adequate level of intrinsic immunity so that the equipment will operate as intended in its environment. The publication defines the immunity test requirements for equipment within its scope in relation to continuous and transient conducted and radiated disturbances, including electrostatic discharges (ESD). Procedures are defined for the measurement of ITE and limits are specified which are developed for ITE within the frequency range from 0 Hz to 400 GHz. For exceptional environmental conditions, special mitigation measures may be required. Owing to testing and performance assessment considerations, some tests are specified in defined frequency bands or at selected frequencies. Equipment which fulfils the requirements at these frequencies is deemed to fulfil the requirements in the entire frequency range from 0 Hz to 400 GHz for electromagnetic phenomena. The test requirements are specified for each port considered. This second edition cancels and replaces the first edition published in 1997, and its Amendments 1(2001) and 2(2002). It is a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- dated references updated;
- option of using a 4 % step size for continuous conducted immunity test deleted;
- revision of Annex A for telephony equipment including methodology for measuring the demodulation from a speaker/hands free device;
- inclusion of new annex related to DSL equipment. The contents of the corrigendum of June 2011 have been included in this copy.

Appareils de traitement de l'information - Caractéristiques d'immunité - Limites et méthodes de mesure

La CISPR 24:2010 s'applique aux appareils de traitement de l'information (ATI) tels que définis dans la CISPR 22. L'objet de cette publication est de définir des exigences qui apportent un niveau approprié d'immunité intrinsèque de façon que l'appareil puisse fonctionner normalement dans son environnement. La publication définit les exigences d'essai d'immunité pour les appareils définis dans le domaine d'application, en matière de perturbations continues et transitoires, conduites et rayonnées, ce qui inclut les décharges électrostatiques (DES). Des procédures sont définies pour la mesure des ATI et des limites leur sont spécifiées dans la gamme des fréquences comprises entre 0 Hz et 400 GHz. Dans des conditions environnementales exceptionnelles, des mesures particulières de protection peuvent être nécessaires. Suite à l'évaluation des essais et des critères d'aptitude, certains essais ne sont définis que dans certaines bandes de fréquences ou à des fréquences particulières. Tout appareil qui satisfait à ces exigences pour ces fréquences est considéré comme satisfaisant aux exigences pour les phénomènes électromagnétiques dans toute la gamme des fréquences comprises entre 0 Hz et 400 GHz. Les exigences d'essai sont spécifiées pour chaque accès considéré. Cette deuxième édition annule et remplace la première édition parue en 1997, son Amendement 1 (2001) et 2 (2002). Elle constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- références datées mises à jour;
- option d'utilisation d'un pas de 4 % pour l'essai d'immunité conduite continu supprimée;
- révision de l'Annexe A pour les appareils de téléphonie, y compris la méthodologie de mesure de la démodulation d'un haut-parleur / dispositif mains libres;
- inclusion d'une nouvelle annexe relative aux appareils DSL. Le contenu du corrigendum de juin 2011 a été pris en considération dans cet exemplaire.

General Information

• Status: Withdrawn
• Publication Date: 16-Apr-2015
• Withdrawal Date: 30-Jul-2020
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.100.20 - Immunity
• Technical Committee: CIS/I - Electromagnetic compatibility of information technology equipment, multimedia equipment and receivers
• Current Stage: WPUB - Publication withdrawn
• Start Date: 31-Jul-2020
• Completion Date: 31-Jul-2020

Relations

• Amended By: CISPR 24:2010/AMD1:2015 - Amendment 1 - Information technology equipment - Immunity characteristics - Limits and methods of measurement
• Effective Date: 05-Sep-2023
• Corrected By: CISPR 24:2010/COR1:2011 - Corrigendum 1 - Information technology equipment - Immunity characteristics - Limits and methods of measurement
• Effective Date: 05-Sep-2023
• Revises: CISPR 24:1997/AMD2:2002 - Amendment 2 - Information technology equipment - Immunity characteristics - Limits and methods of measurement
• Effective Date: 05-Sep-2023
• Revises: CISPR 24:1997 - Information technology equipment - Immunity characteristics - Limits and methods of measurement
• Effective Date: 05-Sep-2023
• Revises: CISPR 24:1997/AMD1:2001 - Amendment 1 - Information technology equipment - Immunity characteristics - Limits and methods of measurement
• Effective Date: 05-Sep-2023

Standards Content (Sample)

CISPR 24
Edition 2.0 2010-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
Information technology equipment – Immunity characteristics – Limits and
methods of measurement
Appareils de traitement de l'information – Caractéristiques d'immunité – Limites
et méthodes de mesure
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by
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CISPR 24
Edition 2.0 2010-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
Information technology equipment – Immunity characteristics – Limits and
methods of measurement
Appareils de traitement de l'information – Caractéristiques d'immunité – Limites
et méthodes de mesure
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
X
CODE PRIX
ICS 33.100.10 ISBN 978-2-88912-163-2
– 2 – CISPR 24 © IEC:2010
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope and object .7
2 Normative references.7
3 Terms and definitions .8
4 Immunity test requirements.11
4.1 General .11
4.2 Particular requirements.11
4.2.1 Electrostatic discharges (ESD).11
4.2.2 Electrical fast transients (EFT) .12
4.2.3 Continuous radio frequency disturbances .12
4.2.4 Power-frequency magnetic fields.13
4.2.5 Surges.13
4.2.6 Voltage dips and interruptions .13
5 Applicability .13
6 Conditions during testing.14
6.1 General conditions.14
6.2 Particular conditions (EUT operational modes, etc.) .15
7 Performance criteria .15
7.1 General performance criteria .15
7.2 Performance criterion A .15
7.3 Performance criterion B .15
7.4 Performance criterion C.15
7.5 Particular performance criteria.16
8 Product documentation .16
9 Measurement uncertainty.16
10 Immunity requirements .16
Annex A (normative) Telephony terminal equipment .19
Annex B (normative) Data processing equipment.29
Annex C (normative) Local area networks (LAN).33
Annex D (normative) Printers and plotters .34
Annex E (normative) Copying machines .35
Annex F (normative) Automatic teller machines (ATM).36
Annex G (normative) Point of sale terminals (POST) .38
Annex H (normative) xDSL Terminal equipment.40
Bibliography .44

Figure 1 – Description of ports .9
Figure A.1 – Example sound coupling set-up between the acoustic output device of a
telephone handset and an artificial ear for detecting demodulated sound pressure level.21
Figure A.2 – Example test set-up for measuring the sound pressure level from the
acoustic output device of a telephone handset.23
Figure A.3 – Test setup for measuring the reference sound pressure level from a
speaker/hands free phone.24
Figure A.4 – Demodulation on analogue lines, set up.25

CISPR 24 © IEC:2010 – 3 –
Figure A.5 – Example of typical small key telephone system or PABX .27
Figure H.1 – DSL access system configuration .40

Table 1 – Immunity, enclosure port.16
Table 2 – Immunity, signal ports and telecommunication ports.17
Table 3 – Immunity, input d.c. power port (excluding equipment marketed with a
a.c./d.c. power converter).17
Table 4 – Immunity, input a.c. power ports (including equipment marketed with a
separate a.c./d.c power converter) .18
Table A.1 – Criteria applied to TTE functions, used during continuous disturbances
testing.19
Table A.2 – Maximum acoustic demodulated levels at an ear piece .22
Table A.3 – Maximum acoustic demodulated levels relative to reference level.23
Table A.4 – Maximum demodulated differential mode signals at analogue ports.25
Table A.5 – TTE performance criteria for spot frequency tests .26
Table A.6 – TTE performance criteria for non-continuous radio frequency disturbances .26
Table A.7 – Test configurations and performance assessment methods applicable to a
PABX and associated terminals for continuous RF disturbance tests .28
Table H.1 – ITU-T recommendations for xDSL systems .41
Table H.2 – Example cable attenuation.41

– 4 – CISPR 24 © IEC:2010
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INFORMATION TECHNOLOGY EQUIPMENT –
IMMUNITY CHARACTERISTICS –
LIMITS AND METHODS OF MEASUREMENT

FOREWORD
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misinte
...

CISPR 24 ®
Edition 2.1 2015-04
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

Information technology equipment – Immunity characteristics – Limits and
methods of measurement
Appareils de traitement de l'information – Caractéristiques d'immunité – Limites
et méthodes de mesure
All rights reserved. Unless otherwise specified, 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

either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or

your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie

et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des

questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

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iPad. Electrotechnical Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a More than 60 000 electrotechnical terminology entries in
variety of criteria (reference number, text, technical English and French extracted from the Terms and Definitions
committee,…). It also gives information on projects, replaced clause of IEC publications issued since 2002. Some entries
and withdrawn publications. have been collected from earlier publications of IEC TC 37,

77, 86 and CISPR.
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CISPR 24 ®
Edition 2.1 2015-04
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE

COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

Information technology equipment – Immunity characteristics – Limits and

methods of measurement
Appareils de traitement de l'information – Caractéristiques d'immunité – Limites

et méthodes de mesure
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.100.20 ISBN 978-2-8322-2625-4

CISPR 24 ®
Edition 2.1 2015-04
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

Information technology equipment – Immunity characteristics – Limits and
methods of measurement
Appareils de traitement de l'information – Caractéristiques d'immunité – Limites
et méthodes de mesure
– 2 – CISPR 24:2010
+AMD1:2015 CSV  IEC 2015
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope and object . 7
2 Normative references. 7
3 Terms and definitions . 8
4 Immunity test requirements . 11
4.1 General . 11
4.2 Particular requirements . 11
4.2.1 Electrostatic discharges (ESD) . 11
4.2.2 Electrical fast transients (EFT) . 12
4.2.3 Continuous radio frequency disturbances . 12
4.2.4 Power-frequency magnetic fields . 13
4.2.5 Surges . 13
4.2.6 Voltage dips and interruptions . 13
5 Applicability . 13
6 Conditions during testing. 14
6.1 General conditions . 14
6.2 Particular conditions (EUT operational modes, etc.) . 15
7 Performance criteria . 15
7.1 General performance criteria . 15
7.2 Performance criterion A . 15
7.3 Performance criterion B . 15
7.4 Performance criterion C . 16
7.5 Particular performance criteria . 16
8 Product documentation . 16
9 Measurement uncertainty . 16
10 Immunity requirements . 16
Annex A (normative) Telephony terminal equipment . 19
Annex B (normative) Data processing equipment . 31
Annex C (normative) Local area networks (LAN) . 35
Annex D (normative) Printers and plotters . 36
Annex E (normative) Copying machines . 37
Annex F (normative) Automatic teller machines (ATM) . 38
Annex G (normative) Point of sale terminals (POST) . 40
Annex H (normative) xDSL Terminal equipment . 42
Bibliography . 46

Figure 1 – Description of ports . 9
Figure A.1 – Example sound coupling set-up between the acoustic output device of a
telephone handset and an artificial ear for detecting demodulated sound pressure level . 21
Figure A.2 – Example test set-up for measuring the sound pressure level from the
acoustic output device of a telephone handset . 23
Figure A.3 – Test setup for measuring the reference sound pressure level from a
speaker/hands free phone . 24

+AMD1:2015 CSV  IEC 2015
Figure A.4 – Demodulation on analogue lines, set up . 25
Figure A.5 – Example of typical small key telephone system or PABX . 28
Figure A.6 – Example test set-up for A.2.6 with secondary device using the method
A.2.2 . 27
Figure A.7 – Example test set-up for A.2.6 with secondary device using the method
A.2.3 . 27
Figure H.1 – DSL access system configuration . 42

Table 1 – Immunity, enclosure port . 16
Table 2 – Immunity, signal ports and telecommunication ports . 17
Table 3 – Immunity, input d.c. power port (excluding equipment marketed with a
a.c./d.c. power converter) . 17
Table 4 – Immunity, input a.c. power ports (including equipment marketed with a
separate a.c./d.c power converter) . 18
Table A.1 – Criteria applied to TTE functions, used during continuous disturbances
testing . 19
Table A.2 – Maximum acoustic demodulated levels at an ear piece . 22
Table A.3 – Maximum acoustic demodulated levels relative to reference level . 23
Table A.4 – Maximum demodulated d
...