EN 50715:2022
(Main)Electromagnetic compatibility - Radio frequency emission - Statistical considerations in the determination of compliance for mass-produced products with requirements for unwanted radio frequency emission
Electromagnetic compatibility - Radio frequency emission - Statistical considerations in the determination of compliance for mass-produced products with requirements for unwanted radio frequency emission
This document specifies statistical considerations for the evaluation of unwanted radio frequency emissions of mass-produced products. NOTE 1 It is based on CISPR TR 16-4-3. The reasons for such statistical considerations are: a) that the abatement of interference aims that the majority of the products to be approved shall not cause interference; b) that the CISPR limits should be suitable for the purpose of type approval of mass-produced products as well as approval of single-produced products; c) that to ensure compliance of mass-produced products with the CISPR limits, statistical techniques have to be applied; d) that it is important for international trade that the limits shall be interpreted in the same way in every country. Therefore, this document specifies requirements and provides guidance based on statistical techniques. EMC compliance of mass-produced products with the requirements of this document are based on the application of statistical techniques that reassure the consumer, with an 80 % degree of confidence, that 80 % of the products of a type being investigated comply with the limits for unintended radio frequency emission. This document does not define limits or measuring methods. It can be used only after measurements of unwanted radio frequency emissions have been performed according to the applicable standard for the unwanted radio frequency emissions. NOTE 2 Clause 4 gives some general requirements on the interpretation of CISPR radio disturbance limits and specifies different methods, which can be used alternatively. Clause 5 gives some specific requirements for certain product groups. NOTE 3 This document does not give a calculation method about the manufacturer’s risk, whether a type of products will be accepted during a second statistical evaluation. More information on the acceptance probability for a repeated measurement is given in CISPR TR 16 4 3, Edition 2.1, Annex D.
Elektromagnetische Verträglichkeit - Hochfrequente Störaussendungen - Statistische Betrachtungen bei der Bestimmung der Übereinstimmung von seriengefertigten Produkten mit Anforderungen zur unerwünschten hochfrequenten Störaussendung
Compatibilité électromagnétique - Emissions radiofréquences - Considérations statistiques pour la détermination de la conformité des produits de série aux exigences en matière d’émissions radiofréquences indésirables
Le présent document spécifie les considérations statistiques relatives à l’évaluation des émissions radiofréquences indésirables des produits de série. NOTE 1 Il est fondé sur le CISPR TR 16-4-3. Les raisons qui motivent ces considérations statistiques sont les suivantes: a) l'objectif poursuivi avec la diminution des perturbations est que la majorité des produits à homologuer ne doivent pas engendrer de perturbations; b) il convient que les limites CISPR soient adaptées à l’homologation de type des produits de série ainsi qu’à l’homologation des produits fabriqués à l’unité; c) pour assurer la conformité des produits de série aux limites CISPR, des techniques statistiques doivent être appliquées; d) il est important pour le commerce international, que les limites soient interprétées de la même manière dans tous les pays. Par conséquent, le présent document spécifie des exigences et fournit des recommandations fondées sur les techniques statistiques. La conformité aux exigences de CEM du présent document des produits de série est fondée sur l’application de techniques statistiques qui rassurent le consommateur, avec un degré de confiance de 80 %, sur le fait que 80 % d'un type de produit donné soumis à évaluation sont conformes aux limites en matière d’émissions radiofréquences indésirables. Le présent document ne définit pas de limite ou de méthode de mesure. Il ne peut être utilisé qu’après la réalisation des mesurages des émissions radiofréquences indésirables selon la norme applicable en matière d’émissions radiofréquences indésirables. NOTE 2 L’Article 4 fournit des exigences générales relatives à l’interprétation des limites de perturbations radioélectriques CISPR et spécifie différentes méthodes qui peuvent être utilisées en variante. L’Article 5 fournit des exigences spécifiques pour certains groupes de produits. NOTE 3 Le présent document ne donne pas de méthode de calcul concernant le risque encouru par le fabricant, qu’un type de produit soit accepté lors d'une deuxième évaluation statistique. Le document CISPR TR 16 4 3, Edition 2.1, donne dans son Annexe D des informations complémentaires sur la probabilité d’acceptation lorsqu’on répète un mesurage.
Elektromagnetna združljivost - Radiofrekvenčno sevanje - Statistični vidiki ugotavljanja skladnosti množično proizvedenih izdelkov z zahtevami za neželena radiofrekvenčna sevanja
Za zagotovitev standarda (ne tehničnega poročila)
Ta standard določa statistične metode za ugotavljanje skladnosti z mejnimi vrednostmi radiofrekvenčnega sevanja za množično proizvedene izdelke.
Ta standard izhaja iz osnovnega tehničnega poročila EMC CISPR TR 16-4-3 »Specifikacija za merilne naprave in metode za merjenje radijskih motenj in odpornosti - 4-3. del: Modeliranje negotovosti, statistike in mejnih vrednosti - Statistični vidiki in določanje skladnosti z EMC množično proizvedenih izdelkov«.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2022
Elektromagnetna združljivost - Radiofrekvenčno sevanje - Statistični vidiki
ugotavljanja skladnosti množično proizvedenih izdelkov z zahtevami za neželena
radiofrekvenčna sevanja
Electromagnetic compatibility - Radio frequency emission - Statistical considerations in
the determination of compliance for mass-produced products with requirements for
unwanted radio frequency emission
Elektromagnetische Verträglichkeit - Hochfrequente Störaussendungen - Statistische
Betrachtungen bei der Bestimmung der Übereinstimmung von seriengefertigten
Produkten mit Anforderungen zur unerwünschten hochfrequenten Störaussendung
Compatibilité électromagnétique - Emissions radiofréquences - Considérations
statistiques pour la détermination de la conformité des produits de série aux exigences
en matière d’émissions radiofréquences indésirablesCompatibilité électromagnétique -
Emissions radiofréquences - Considérations statistiques pour la détermination de la
conformité des produits de série aux exigences en matière d’émissions radiofréquences
indésirables
Ta slovenski standard je istoveten z: EN 50715:2022
ICS:
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN 50715
NORME EUROPÉENNE
EUROPÄISCHE NORM July 2022
ICS 33.100.10
English Version
Electromagnetic compatibility - Radio frequency emission -
Statistical considerations in the determination of compliance for
mass-produced products with requirements for unwanted radio
frequency emission
Compatibilité électromagnétique - Emissions Elektromagnetische Verträglichkeit - Hochfrequente
radiofréquences - Considérations statistiques pour la Störaussendungen - Statistische Betrachtungen bei der
détermination de la conformité des produits de série aux Bestimmung der Übereinstimmung von seriengefertigten
exigences en matière d'émissions radiofréquences Produkten mit Anforderungen zur unerwünschten
indésirables hochfrequenten Störaussendung
This European Standard was approved by CENELEC on 2022-06-06. 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 CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
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Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50715:2022 E
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Interpretation of CISPR radio disturbance limits . 5
4.1 Significance of a CISPR limit . 5
4.2 General . 5
4.2.1 Equipment producing continuous disturbance . 5
4.2.2 Equipment producing discontinuous disturbance (clicks) . 5
4.3 Compliance with limits for equipment in large-scale production . 5
4.3.1 General . 5
4.3.2 Method based on a general margin to the limit . 6
4.3.3 Test based on the non-central t-distribution . 6
4.3.4 Test based on the binomial distribution . 7
4.3.5 Larger sample size . 8
5 Definition of sub-ranges for the test based on the non-central t-distribution . 8
5.1 General . 8
5.2 Definition of subranges for products in the scope of EN 55011 . 8
5.3 Definition of subranges for products in the scope of EN 55014-1 . 8
5.4 Definition of subranges for products in the scope of EN 55015 . 9
Figure
Figure 1 — Unit-to-unit variation of the sub-range maximum . 7
Tables
Table 1 — General margin to the limit for statistical evaluation . 6
Table 2 — Factor k for the application of the non-central t-distribution . 6
Table 3 — Application of the binomial distribution. 7
European foreword
This document (EN 50715:2022) has been prepared by CLC/TC 210 “Electromagnetic Compatibility (EMC)”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2023-06-06
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2025-06-06
conflicting with this document have to be
withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A complete
listing of these bodies can be found on the CENELEC website.
1 Scope
This document specifies statistical considerations for the evaluation of unwanted radio frequency emissions of
mass-produced products.
NOTE 1 It is based on CISPR TR 16-4-3.
The reasons for such statistical considerations are:
a) that the abatement of interference aims that the majority of the products to be approved shall not cause
interference;
b) that the CISPR limits should be suitable for the purpose of type approval of mass-produced products as
well as approval of single-produced products;
c) that to ensure compliance of mass-produced products with the CISPR limits, statistical techniques have to
be applied;
d) that it is important for international trade that the limits shall be interpreted in the same way in every country.
Therefore, this document specifies requirements and provides guidance based on statistical techniques. EMC
compliance of mass-produced products with the requirements of this document are based on the application of
statistical techniques that reassure the consumer, with an 80 % degree of confidence, that 80 % of the products
of a type being investigated comply with the limits for unintended radio frequency emission.
This document does not define limits or measuring methods. It can be used only after measurements of
unwanted radio frequency emissions have been performed according to the applicable standard for the
unwanted radio frequency emissions.
NOTE 2 Clause 4 gives some general requirements on the interpretation of CISPR radio disturbance limits and specifies
different methods, which can be used alternatively. Clause 5 gives some specific requirements for certain product groups.
NOTE 3 This document does not give a calculation method about the manufacturer’s risk, whether a type of products
will be accepted during a second statistical evaluation. More information on the acceptance probability for a repeated
measurement is given in CISPR TR 16-4-3, Edition 2.1, Annex D.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements 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.
EN 55011, Industrial, scientific and medical equipment Radio-frequency disturbance characteristics Limits
and methods of measurement
EN 55014-1, Electromagnetic compatibility Requirements for household appliances, electric tools and similar
apparatus Part 1: Emission
EN 55015, Limits
...
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