IEC 60512-23-3:2018
(Main)Connectors for electrical and electronic equipment - Tests and measurements - Part 23-3: Screening and filtering tests - Test 23c: Shielding effectiveness of connectors and accessories - Line injection method
Connectors for electrical and electronic equipment - Tests and measurements - Part 23-3: Screening and filtering tests - Test 23c: Shielding effectiveness of connectors and accessories - Line injection method
IEC 60512-23-3:2018. defines a standard test method for measuring the shielding effectiveness SE of a shielded connector, or of a connector not provided with integral shield once fitted with a shielding accessory and terminated with a screened cable. The complete assembly has a continuous 360° shielding capability throughout its length. This test method can be applied to shielded connectors and to connector accessories with shielding capability. The following different connector designs can be tested:
- circular connectors;
- rectangular connectors;
- connectors for printed boards;
- connector shielding accessories.
This test method utilizes the principle that the intrinsic shielding property of the connector/ accessory/cable assembly is its surface transfer impedance ZT which can be expressed as the longitudinal voltage inside the shield, relative to the current flow on the outside shell. This test is also suitable for measuring the shielding effectiveness of a connector fitted with triaxial contacts terminated with shielded, twisted pair cables, as used in data bus systems. This second edition cancels and replaces the first edition, published in 2000. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) an introduction has been added to provide some guidance to this document in view of concurrent test method 23g in the same family;
b) the frequency range for which this test method is considered reliable moved from 1 GHz to 3 GHz, to be consistent with Figure 7 (unchanged) and current industry practice and need;
c) update to IEC 62153-4-6:2017 of former normative reference IEC 60096-4-1:1990, withdrawn and incorrect (should have been IEC 61196-1:1995, also withdrawn);
d) update to current subclause numbers of IEC 62153-4-6:2017 what were the previous subclause numbers referenced in IEC 61196-1:1995 (wrongly attributed to IEC 60096-4-1:1990). For immediate understanding the title of these subclauses has been added;
e) alignment of title to the current scope of SC 48B (connectors) and inclusion of electrical equipment as target application of said connectors (per current scope of TC 48) and explicit reference to the method – line injection – for the measurement of transfer impedance;
f) symbols SE for shielding effectiveness and ZT for surface transfer impedance added throughout the document;
g) list of connectors to which the test method is applicable – previously in 3.1 – moved in scope;
h) former name of AECMA organization changed to the current ASD-STAN;
i) “specimen” used instead of “sample” throughout the document;
j) clarification in the title of what transfer impedance is described in Table 3 and editorial improvement of the same;
k) “dielectric constant” changed into the updated term “relative permittivity”;
l) added a note to warn about the fact that this test method requires in 6.6 a TDR with more stringent rise time of less than 100 ps than the value of less than 350 ps specified both in IEC 62153-4-6 and in EN 50289-1-6 for the similar line injection method applied to screened cables, whereas test 23g of IEC 60512-23-7 specifies for the same purpose a TDR with a rise time of less than 200 ps;
m) adoption of term “connector housing” [IEV 581-27-10] instead of “shell” to address the connector accessory providing the shielding;
n) title “Transfer impedance ZT [Ω]” added to the ordinate axis on the left side of double log diagram of Figure 7;
o) explanatory note to clarify the conversion formula for SE from ZT added.
Key words: Connectors, Screening and Filtering Tests, Shielding Effectiveness
Connecteurs pour équipements électriques et électroniques - Essais et mesures - Partie 23-3 : Essais d'écrantage et de filtrage - Essai 23c : Efficacité de blindage des connecteurs et des accessoires - Méthode de la ligne d'injection
L'IEC 60512-23-3:2018. définit une méthode d’essai normalisée pour mesurer l’efficacité de blindage SE d’un connecteur blindé, ou d’un connecteur sans blindage intégré et équipé d’un accessoire de blindage, et raccordé à un câble écranté. Le câble assemblé présente un blindage continu sur 360° sur toute sa longueur. La présente méthode d’essai peut être appliquée aux connecteurs blindés et aux accessoires de connecteur ayant un blindage. Les différentes conceptions de connecteur ci-après peuvent être soumises à essai:
- connecteurs circulaires,
- connecteurs rectangulaires,
- connecteurs pour cartes de circuit imprimé,
- accessoires de blindage pour connecteur.
La présente méthode d’essai part du principe que la propriété intrinsèque du blindage de l’ensemble connecteur/accessoire/câble est son impédance de transfert de surface ZT, qui peut être exprimée par la tension longitudinale à l’intérieur du blindage, en fonction du courant parcourant le boîtier extérieur. Le présent essai est également adapté à la mesure de l’efficacité de blindage d’un connecteur équipé de contacts triaxiaux raccordés à des câbles blindés à paires torsadées, comme ceux utilisés dans les systèmes pour bus de données. Cette deuxième édition annule et remplace la première édition, parue en 2000. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) ajout d’une introduction visant à donner des recommandations dans le présent document relatives à la méthode d’essai parallèle 23g, figurant dans la même famille;
b) modification de la plage de fréquences pour laquelle la présente méthode d’essai est considérée fiable, dont la limite supérieure passe de 1 GHz à 3 GHz, afin d’assurer l’homogénéité avec la Figure 7 (inchangée) et les pratiques et besoins actuels de l’industrie;
c) mise à jour de l’ancienne référence normative IEC 60096-4-1:1990, retirée et incorrecte (la référence normative à spécifier aurait dû être l’IEC 61196-1:1995, depuis elle aussi retirée), qui devient l’IEC 62153-4-6:2017;
d) mise à jour des numéros de paragraphe actuels pour refléter ceux de l’IEC 62153 4 6:2017, qui étaient auparavant les numéros de paragraphe de l’IEC 61196 1:1995 (attribués par erreur à l’IEC 60096-4-1:1990). Dans un souci de clarification, le titre de ces paragraphes a été ajouté;
e) alignement du titre sur le domaine d’application actuel du SC 48B (connecteurs) et inclusion des équipements électriques comme application cible desdits connecteurs (selon le domaine d’application actuel du TC 48), et référence explicite à la méthode (ligne d’injection) utilisée pour la mesure de l’impédance de transfert;
f) ajout dans l’ensemble du document des symboles SE pour l’efficacité de blindage, et ZT pour l’impédance de transfert de surface;
g) déplacement dans le domaine d’application de la liste des connecteurs auxquels s’applique la méthode d’essai, auparavant indiquée en 3.1;
h) modification de l’ancien nom de l’organisation AECMA pour refléter son nom actuel, l’ASD-STAN;
i) utilisation du terme «éprouvette» à la place d’«échantillon» dans l’ensemble du document;
j) clarification dans le titre de l’impédance de transfert décrite dans le Tableau 3 et amélioration éditoriale du titre;
k) utilisation de l’expression actualisée «permittivité relative» à la place de l’expression «constante diélectrique»;
l) ajout d’une note de mise en garde spécifiant que cette méthode d’essai exige en 6.6 un réflectomètre temporel avec un temps de montée inférieur à 100 ps, plus rigoureux que la valeur maximale de 350 ps spécifiée dans l’IEC 62153-4-6 et dans l’EN 50289-1-6 pour la méthode analogue de ligne d’injection appliquée aux câbles écrantés, tandis que l’essai 23g de l’IEC 60512-23-7 spécifie dans ce même contexte un RDT avec un temps de montée inférieur à 200 ps;
m) utilisation de l’expression «boîtier de connecteurs» [IEV 581-27-10] à la place du terme «capot», pou
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IEC 60512-23-3 ®
Edition 2.0 2018-12
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Electromechanical components Connectors for electrical and electronic
equipment – Basic testing procedures and measuring methods –
Tests and measurements –
Part 23-3: Screening and filtering tests – Test 23c: Shielding effectiveness of
connectors and accessories – Line injection method
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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International Standards for all electrical, electronic and related technologies.
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IEC 60512-23-3 ®
Edition 2.0 2018-12
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Electromechanical components Connectors for electrical and electronic
equipment – Basic testing procedures and measuring methods –
Tests and measurements –
Part 23-3: Screening and filtering tests – Test 23c: Shielding effectiveness of
connectors and accessories – Line injection method
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.220.01 ISBN 978-2-8322-6360-0
– 2 – IEC 60512-23-3:2018 RLV © IEC 2018
CONTENTS
FOREWORD . 3
INTRODUCTION . 6
1 Scope and object . 7
2 Normative references . 8
3 Terms and definitions . 8
4 Test method . 9
4.1 Test requirements . 9
Test screen diameter .
4.2 Applicable frequency range . 9
5 Test equipment . 10
6 Preparation of the sample under test specimen . 11
6.1 General . 11
6.2 Circular connectors . 11
6.3 Rectangular connectors . 12
6.4 Connectors for printed boards . 12
6.5 Impedance matching of primary and secondary circuits . 13
6.5.1 General. 13
6.5.2 Preparation of the secondary circuit . 13
6.5.3 Adaptation of the primary circuit . 13
6.6 Calibration of test set-up . 13
7 Measurement of shielding effectiveness . 14
7.1 Measurement . 14
7.2 Method of calculating shielding effectiveness SE (attenuation) from surface
transfer impedance Z . 14
T
8 Requirements . 15
9 Details to be specified . 15
Bibliography . 16
Figure 1 – Principle of line injection method . 8
Figure 2 – Installation of test set-up . 11
Figure 3 – Example of test set-up for shielded circular connectors . 12
Figure 4 – Example of test set-up for shielded rectangular connectors . 12
Figure 5 – Example of test set-up for shielded printed board connectors . 13
Figure 6 – Calibration test set-up . 14
Figure 7 – Example of a shielding attenuation (shielding effectiveness) plot . 15
Table 1 – Requirements for transfer impedance .
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROMECHANICAL COMPONENTS CONNECTORS
FOR ELECTRICAL AND ELECTRONIC EQUIPMENT –
BASIC TESTING PROCEDURES AND
MEASURING METHODS TESTS AND MEASUREMENTS –
Part 23-3: Screening and filtering tests – Test 23c: Shielding effectiveness
of connectors and accessories – Line injection method
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of 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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.
– 4 – IEC 60512-23-3:2018 RLV © IEC 2018
International Standard IEC 60512-23-3 has been prepared by subcommittee 48B: Electrical
connectors, of IEC technical committee 48: Electrical connectors and mechanical structures
for electrical and electronic equipment.
This second edition cancels and replaces the first edition, published in 2000. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) an introduction has been added to provide some guidance to this document in view of
concurrent test method 23g in the same family;
b) the frequency range for which this test method is considered reliable moved from 1 GHz
to 3 GHz, to be consistent with Figure 7 (unchanged) and current industry practice and
need;
c) update to IEC 62153-4-6:2017 of former normative reference IEC 60096-4-1:1990,
withdrawn and incorrect (should have been IEC 61196-1:1995, also withdrawn);
d) update to current subclause numbers of IEC 62153-4-6:2017 what were the previous
subclause numbers referenced in IEC 61196-1:1995 (wrongly attributed to IEC 60096-4-
1:1990). For immediate understanding the title of these subclauses has been added;
e) alignment of title to the current scope of SC 48B (connectors) and inclusion of electrical
equipment as target application of said connectors (per current scope of TC 48) and
explicit reference to the method – line injection – for the measurement of transfer
impedance;
f) symbols SE for shielding effectiveness and Z for surface transfer impedance added
T
throughout the document;
g) list of connectors to which the test method is applicable – previously in 3.1 – moved in
scope;
h) former name of AECMA organization changed to the current ASD-STAN;
i) “specimen” used instead of “sample” throughout the document;
j) clarification in the title of what transfer impedance is described in Table 3 and editorial
improvement of the same;
k) “dielectric constant” changed into the updated term “relative permittivity”;
l) added a note to warn about the fact that this test method requires in 6.6 a TDR with more
stringent rise time of less than 100 ps than the value of less than 350 ps specified both in
IEC 62153-4-6 and in EN 50289-1-6 for the similar line injection method applied to
screened cables, whereas test 23g of IEC 60512-23-7 specifies for the same purpose a
TDR with a rise time of less than 200 ps;
m) adoption of term “connector housing” [IEV 581-27-10] instead of “shell” to address the
connector accessory providing the shielding;
...
IEC 60512-23-3 ®
Edition 2.0 2018-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Connectors for electrical and electronic equipment – Tests and measurements –
Part 23-3: Screening and filtering tests – Test 23c: Shielding effectiveness of
connectors and accessories – Line injection method
Connecteurs pour équipements électriques et électroniques – Essais et
mesures –
Partie 23-3: Essais d’écrantage et de filtrage – Essai 23c: Efficacité de blindage
des connecteurs et des accessoires – Méthode de la ligne d’injection
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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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.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 21 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.
IEC publications search - webstore.iec.ch/advsearchform IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and
CISPR.
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IEC 60512-23-3 ®
Edition 2.0 2018-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Connectors for electrical and electronic equipment – Tests and measurements –
Part 23-3: Screening and filtering tests – Test 23c: Shielding effectiveness of
connectors and accessories – Line injection method
Connecteurs pour équipements électriques et électroniques – Essais et
mesures –
Partie 23-3: Essais d’écrantage et de filtrage – Essai 23c: Efficacité de blindage
des connecteurs et des accessoires – Méthode de la ligne d’injection
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.220.01 ISBN 978-2-8322-6319-8
– 2 – IEC 60512-23-3:2018 © IEC 2018
CONTENTS
FOREWORD . 3
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 8
3 Terms and definitions . 8
4 Test method . 9
4.1 Test requirements . 9
4.2 Applicable frequency range . 9
5 Test equipment . 9
6 Preparation of the test specimen . 10
6.1 General . 10
6.2 Circular connectors . 10
6.3 Rectangular connectors . 11
6.4 Connectors for printed boards . 11
6.5 Impedance matching of primary and secondary circuits . 12
6.5.1 General. 12
6.5.2 Preparation of the secondary circuit . 12
6.5.3 Adaptation of the primary circuit . 12
6.6 Calibration of test set-up . 12
7 Measurement of shielding effectiveness . 13
7.1 Measurement . 13
7.2 Method of calculating shielding effectiveness SE (attenuation) from surface
transfer impedance Z . 13
T
8 Requirements . 14
9 Details to be specified . 14
Bibliography . 15
Figure 1 – Principle of line injection method . 8
Figure 2 – Installation of test set-up . 10
Figure 3 – Example of test set-up for shielded circular connectors . 11
Figure 4 – Example of test set-up for shielded rectangular connectors . 11
Figure 5 – Example of test set-up for shielded printed board connectors . 12
Figure 6 – Calibration test set-up . 13
Figure 7 – Example of a shielding attenuation (shielding effectiveness) plot . 14
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONNECTORS FOR ELECTRICAL AND ELECTRONIC
EQUIPMENT – TESTS AND MEASUREMENTS –
Part 23-3: Screening and filtering tests – Test 23c: Shielding effectiveness
of connectors and accessories – Line injection method
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of 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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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 60512-23-3 has been prepared by subcommittee 48B: Electric
...
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