Metallic cables and other passive components test methods - Part 4-15: Electromagnetic compatibility (EMC) - Test method for measuring transfer impedance and screening attenuation - or coupling attenuation with triaxial cell

IEC 62153-4-15:2021 specifies the procedures for measuring with triaxial cell the transfer impedance, screening attenuation or the coupling attenuation of connectors, cable assemblies and components, for example accessories for analogue and digital transmission systems, and equipment for communication networks and cabling. This second edition cancels and replaces the first edition published in 2015.This edition includes the following significant technical changes with respect to the previous edition:
a) measurement of coupling attenuation of balanced connectors, assemblies and components with balun and balunless added;
b) application of a test adapter was added;
c) application of a moveable shorting plane;
d) application of the triaxial "absorber" cell;
e) correction of test results in the case that the receiver input impedance R is higher than the characteristic impedance of the outer circuit Z2.

Méthodes d’essais des câbles métalliques et autres composants passifs - Partie 4-15 : Compatibilité électromagnétique (CEM) - Méthode d’essai pour le mesurage de l’impédance de transfert et de l’affaiblissement d’écran - ou de l’affaiblissement de couplage avec cellule triaxiale

L'IEC 62153-4-15:2021 spécifie les procédures de mesure de l’impédance de transfert, de l’affaiblissement d'écran ou de couplage des connecteurs, des cordons et des composants, par exemple les accessoires pour les systèmes de transmission numérique et analogique, et les équipements de réseaux de communication et de câblage, avec une cellule triaxiale. Cette deuxième édition annule et remplace la première édition parue en 2015. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) le mesurage de l’affaiblissement de couplage des connecteurs, cordons et composants symétriques avec ou sans symétriseur a été ajouté;
b) l’application d’un adaptateur d’essai a été ajoutée;
c) application d’un plan de court-circuit amovible;
d) application de la cellule "absorbeuse" triaxiale;
e) correction des résultats d'essai dans le cas où l’impédance d’entrée durécepteur R est supérieure à l’impédance caractéristique du circuit externe Z2.

General Information

Status
Published
Publication Date
02-Aug-2021
Current Stage
PPUB - Publication issued
Start Date
20-Aug-2021
Completion Date
03-Aug-2021
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IEC 62153-4-15:2021 RLV - Metallic cables and other passive components test methods - Part 4-15: Electromagnetic compatibility (EMC) - Test method for measuring transfer impedance and screening attenuation - or coupling attenuation with triaxial cell Released:8/3/2021 Isbn:9782832252147
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IEC 62153-4-15:2021+AMD1:2024 CSV - Metallic cables and other passive components test methods - Part 4-15: Electromagnetic compatibility (EMC) - Test method for measuring transfer impedance and screening attenuation - or coupling attenuation with triaxial cell Released:5/1/2024 Isbn:9782832288696
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IEC 62153-4-15:2021 - Metallic cables and other passive components test methods - Part 4-15: Electromagnetic compatibility (EMC) - Test method for measuring transfer impedance and screening attenuation - or coupling attenuation with triaxial cell
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IEC 62153-4-15 ®
Edition 2.0 2021-08
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Metallic communication cables and other passive components test methods –
Part 4-15: Electromagnetic compatibility (EMC) – Test method for measuring
transfer impedance and screening attenuation – or coupling attenuation with
triaxial cell
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.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
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 corrigendum or an amendment might have been published.

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(IEV) online.
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If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
IEC 62153-4-15 ®
Edition 2.0 2021-08
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Metallic communication cables and other passive components test methods –
Part 4-15: Electromagnetic compatibility (EMC) – Test method for measuring
transfer impedance and screening attenuation – or coupling attenuation with
triaxial cell
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.100.10; 33.120.10 ISBN 978-2-8322-5214-7
– 2 – IEC 62153-4-15:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references. 7
3 Terms and definitions . 8
4 Physical background . 10
5 Principle of the test methods . 10
5.1 General . 10
5.2 Transfer impedance . 12
5.3 Screening attenuation . 13
5.4 Coupling attenuation . 13
5.5 Tube-in-tube method . 13
6 Test procedures . 14
6.1 General . 14
6.2 Triaxial cell . 14
6.3 Cut-off frequencies, higher-order modes . 14
6.4 Test equipment . 14
6.5 Calibration procedure . 16
6.6 Test leads and connecting cables to the DUT . 17
7 Sample preparation . 17
7.1 Coaxial connector or assembly or quasi-coaxial component . 17
7.2 Balanced or multipin connectors or components . 17
7.3 Cable assemblies . 19
7.4 Other screened devices . 19
8 Transfer impedance (short-matched) . 20
8.1 General . 20
8.2 Principle block diagram of transfer impedance . 20
8.3 Measuring procedure . 20
8.4 Evaluation of test results . 21
8.5 Test report . 21
9 Screening attenuation . 21
9.1 General . 21
9.2 Impedance matching . 21
9.3 Measuring with matched conditions . 22
9.3.1 Procedure . 22
9.3.2 Evaluation of test results . 22
9.4 Measuring with mismatch . 23
9.4.1 General . 23
9.4.2 Evaluaton of test results . 23
9.5 Test report . 24
10 Coupling attenuation . 24
10.1 General . 24
10.2 Procedure . 24
10.2.1 Coupling attenuation with balun . 24
10.2.2 Balunless coupling attenuation . 25
10.3 Expression of results . 25

10.4 Test report . 25
11 Coupling transfer function .
Annex A (informative) Principle of the triaxial test procedure . 28
A.1 General . 28
A.2 Transfer impedance . 29
A.3 Screening attenuation . 29
A.4 Coupling attenuation . 30
Annex B (informative) Triaxial cell . 33
Annex C (informative) Cut off frequencies, higher order modes .
Annex D (informative) Coupling transfer function .
Annex E (informative) Attenuation versus scattering parameter S .
Annex C (normative) Triaxial absorber cell . 42
C.1 Cut-off frequencies, higher order modes . 42
C.2 Absorber . 43
C.3 Influence of absorber . 45
Annex D (informative) Application of a moveable shorting plane. 46
D.1 Coupling transfer function . 46
D.2 Effect of the measurement length on the measurement cut-off frequency . 47
D.3 Details of the movable shorting plane . 47
D.4 Measurement results . 49
Annex E (informative) Correction in the case that the receiver input impedance R is
higher than the characteristic impedance of the outer circuit Z . 52
E.1 Impedance Z lower than the input impedance of the receiver . 52
E.2 Correction . 54
Annex F (informative) Test adapter . 55
Annex G (informative) Attenuation versus scattering parameter S . 56
Bibliography . 58

Figure 1 – Definition of Z . 8
T
Figure 2 – Principle depiction of the triaxial cell test setup (tube) to measure transfer
impedance and screening attenuation with tube in tube in accordance with IEC 62153-4-7 . 11
Figure 3 – Principle depiction of the triaxial cell to measure transfer impedance and
screening attenuation of connectors or assemblies with tube in tube in accordance with
IEC 62153-4-7 . 12
Figure 4 – Rectangular waveguide . 15
Figure 5 – Preparation of balanced or multipin connectors for transfer impedance and
screening attenuation. 18
Figure 6 – Preparation of balanced or multipin connectors for coupling attenuation
measurement . 19
Figure 7 – Test setup (principle) for transfer impedance measurement in accordance
with test method B of IEC 62153-4-3 . 20
Figure 8 – Principle test setup for balunless coupling attenuation measurement
according to IEC 62153-4-9 . 25
Figure A.1 – Principle test setup to measure transfer impedance and screening
attenuation . 28
Figure A.2 – Equivalent circuit of the principle of the test setup in Figure A.1 . 29
Figure A.3 – Coupling attenuation, principle of test setup with balun and standard tube . 31

– 4 – IEC 62153-4-15:2021 RLV © IEC 2021
Figure A.4 – Coupling attenuation, principle of setup with multiport VNA and standard
head . 31
Figure B.1 – Principle depiction of the triaxial cell to measure transfer impedance and
screening attenuation at HV-assemblies on a connector with tube-in-tube according to
IEC 62153-4-7 . 33
Figure B.2 – Examp
...


IEC 62153-4-15 ®
Edition 2.1 2024-05
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Metallic cables and other passive components test methods –
Part 4-15: Electromagnetic compatibility (EMC) related test method for
measuring transfer impedance and screening attenuation or coupling
attenuation with triaxial cell

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.

IEC Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
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 corrigendum or an amendment might have been published.

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committee, …). It also gives information on projects, replaced With a subscription you will always have access to up to date
and withdrawn publications. content tailored to your needs.

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Stay up to date on all new IEC publications. Just Published
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a month by email.
and French, with equivalent terms in 25 additional languages.

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(IEV) online.
If you wish to give us your feedback on this publication or need

further assistance, please contact the Customer Service
Centre: sales@iec.ch.
IEC 62153-4-15 ®
Edition 2.1 2024-05
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Metallic cables and other passive components test methods –
Part 4-15: Electromagnetic compatibility (EMC) related test method for
measuring transfer impedance and screening attenuation or coupling
attenuation with triaxial cell
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.100.10; 33.120.10 ISBN 978-2-8322-8869-6
REDLINE VERSION – 2 – IEC 62153-4-15:2021+AMD1:2024 CSV
© IEC 2024
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Physical background . 10
5 Principle of the test methods . 10
5.1 General . 10
5.2 Transfer impedance . 12
5.3 Screening attenuation . 12
5.4 Coupling attenuation . 12
5.5 Tube-in-tube method . 12
6 Test procedures . 12
6.1 General . 12
6.2 Triaxial cell . 12
6.3 Cut-off frequencies, higher-order modes . 13
6.4 Test equipment . 14
6.5 Calibration procedure . 14
6.6 Test leads and connecting cables to the DUT . 15
7 Sample preparation . 15
7.1 Coaxial connector or assembly or quasi-coaxial component . 15
7.2 Balanced or multipin connectors or components . 15
7.3 Cable assemblies . 16
7.4 Other screened devices . 17
8 Transfer impedance (short-matched) . 17
8.1 General . 17
8.2 Principle block diagram of transfer impedance . 17
8.3 Measuring procedure . 18
8.4 Evaluation of test results . 18
8.5 Test report . 18
9 Screening attenuation . 19
9.1 General . 19
9.2 Impedance matching . 19
9.3 Measuring with matched conditions . 19
9.3.1 Procedure . 19
9.3.2 Evaluation of test results . 19
9.4 Measuring with mismatch . 20
9.4.1 General . 20
9.4.2 Evaluaton of test results . 20
9.5 Test report . 21
10 Coupling attenuation . 21
10.1 General . 21
10.2 Procedure . 21
10.2.1 Coupling attenuation with balun . 21
10.2.2 Balunless coupling attenuation . 22
10.3 Expression of results . 22
10.4 Test report . 23

© IEC 2024
Annex A (informative) Principle of the triaxial test procedure . 24
A.1 General . 24
A.2 Transfer impedance . 25
A.3 Screening attenuation . 25
A.4 Coupling attenuation . 26
Annex B (informative) Triaxial cell . 28
Annex C (normative) Triaxial absorber cell . 30
C.1 Cut-off frequencies, higher order modes . 30
C.2 Absorber . 31
C.3 Influence of absorber . 33
Annex D (informative) Application of a moveable shorting plane . 34
D.1 Coupling transfer function . 34
D.2 Effect of the measurement length on the measurement cut-off frequency . 35
D.3 Details of the movable shorting plane . 35
D.4 Measurement results . 37
Annex E (informative) Correction in the case that the receiver input impedance R is
higher than the characteristic impedance of the outer circuit Z . 39
E.1 Impedance Z lower than the input impedance of the receiver . 39
E.2 Correction . 40
Annex F (informative) Test adapter . 41
Annex G (informative) Attenuation versus scattering parameter S . 42
Annex H (normative) Coupling attenuation expressed by mixed mode scattering
parameter and an envelope line . 44
H.1 General . 44
H.2 Coupling attenuation expressed by mixed mode scattering parameter . 44
H.3 Envelope line of coupling attenuation . 44
Bibliography . 46

Figure 1 – Definition of Z . 8
T
Figure 2 – Principle depiction of the triaxial test setup (tube) to measure transfer
impedance and screening attenuation with tube in tube in accordance with IEC 62153-4-7 . 11
Figure 3 – Principle depiction of the triaxial cell to measure transfer impedance and
screening attenuation of connectors or assemblies with tube in tube in accordance with
IEC 62153-4-7 . 11
Figure 4 – Rectangular waveguide . 13
Figure 5 – Preparation of balanced or multipin connectors for transfer impedance and
screening attenuation . 16
Figure 6 – Preparation of balanced or multipin connectors for coupling attenuation
measurement . 16
Figure 7 – Test setup (principle) for transfer impedance measurement in accordance
with test method B of IEC 62153-4-3 . 17
Figure 8 – Principle test setup for balunless coupling attenuation measurement
according to IEC 62153-4-9 . 22
Figure A.1 – Principle test setup to measure transfer impedance and screening
attenuation . 24
Figure A.2 – Equivalent circuit of the principle of the test setup in Figure A.1. 25
Figure A.3 – Coupling attenuation, principle of test setup with balun and standard tube . 26

REDLINE VERSION – 4 – IEC 62153-4-15:2021+AMD1:2024 CSV
© IEC 2024
Figure A.4 – Coupling attenuation, principle of setup with multiport VNA and standard
head .
...


IEC 62153-4-15 ®
Edition 2.0 2021-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Metallic cables and other passive components test methods –
Part 4-15: Electromagnetic compatibility (EMC) – Test method for measuring
transfer impedance and screening attenuation – or coupling attenuation with
triaxial cell
Méthodes d’essais des câbles métalliques et autres composants passifs –
Partie 4-15: Compatibilité électromagnétique (CEM) – Méthode d’essai pour
le mesurage de l’impédance de transfert et de l’affaiblissement d’écran –
ou de l’affaiblissement de couplage avec cellule triaxiale

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.

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Switzerland
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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 corrigendum or an amendment might have been published.

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containing more than 22 000 terminological entries in English
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and French, with equivalent terms in 18 additional languages.
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IEC 62153-4-15 ®
Edition 2.0 2021-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Metallic cables and other passive components test methods –

Part 4-15: Electromagnetic compatibility (EMC) – Test method for measuring

transfer impedance and screening attenuation – or coupling attenuation with

triaxial cell
Méthodes d’essais des câbles métalliques et autres composants passifs –

Partie 4-15: Compatibilité électromagnétique (CEM) – Méthode d’essai pour

le mesurage de l’impédance de transfert et de l’affaiblissement d’écran –

ou de l’affaiblissement de couplage avec cellule triaxiale

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.100.10; 33.120.10 ISBN 978-2-8322-1003-2

– 2 – IEC 62153-4-15:2021 © IEC 2021
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references. 7
3 Terms and definitions . 8
4 Physical background . 10
5 Principle of the test methods . 10
5.1 General . 10
5.2 Transfer impedance . 12
5.3 Screening attenuation . 12
5.4 Coupling attenuation . 12
5.5 Tube-in-tube method . 12
6 Test procedures . 12
6.1 General . 12
6.2 Triaxial cell . 12
6.3 Cut-off frequencies, higher-order modes . 13
6.4 Test equipment . 14
6.5 Calibration procedure . 14
6.6 Test leads and connecting cables to the DUT . 15
7 Sample preparation . 15
7.1 Coaxial connector or assembly or quasi-coaxial component . 15
7.2 Balanced or multipin connectors or components . 15
7.3 Cable assemblies . 16
7.4 Other screened devices . 17
8 Transfer impedance (short-matched) . 17
8.1 General . 17
8.2 Principle block diagram of transfer impedance . 17
8.3 Measuring procedure . 18
8.4 Evaluation of test results . 18
8.5 Test report . 18
9 Screening attenuation . 19
9.1 General . 19
9.2 Impedance matching . 19
9.3 Measuring with matched conditions . 19
9.3.1 Procedure . 19
9.3.2 Evaluation of test results . 19
9.4 Measuring with mismatch . 20
9.4.1 General . 20
9.4.2 Evaluaton of test results . 20
9.5 Test report . 21
10 Coupling attenuation . 21
10.1 General . 21
10.2 Procedure . 21
10.2.1 Coupling attenuation with balun . 21
10.2.2 Balunless coupling attenuation . 22
10.3 Expression of results . 22

10.4 Test report . 23
Annex A (informative) Principle of the triaxial test procedure . 24
A.1 General . 24
A.2 Transfer impedance . 25
A.3 Screening attenuation . 25
A.4 Coupling attenuation . 26
Annex B (informative) Triaxial cell . 28
Annex C (normative) Triaxial absorber cell . 30
C.1 Cut-off frequencies, higher order modes . 30
C.2 Absorber . 31
C.3 Influence of absorber . 33
Annex D (informative) Application of a moveable shorting plane. 34
D.1 Coupling transfer function . 34
D.2 Effect of the measurement length on the measurement cut-off frequency . 35
D.3 Details of the movable shorting plane . 35
D.4 Measurement results . 37
Annex E (informative) Correction in the case that the receiver input impedance R is
higher than the characteristic impedance of the outer circuit Z . 39
E.1 Impedance Z lower than the input impedance of the receiver . 39
E.2 Correction . 40
Annex F (informative) Test adapter . 41
Annex G (informative) Attenuation versus scattering parameter S . 42
Bibliography .
...

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