EN IEC 62153-4-16:2021

Metallic cables and other passive components test methods - Part 4-16: Electromagnetic compatibility (EMC) - Extension of the frequency range to higher frequencies for transfer impedance and to lower frequencies for screening attenuation measurements using the triaxial set-up

This part of IEC 62153 specifies a method to extrapolate the test results of transfer impedance to higher frequencies and the test results of screening attenuation to lower frequencies when measured with the triaxial set-up in accordance with IEC 62153-4-3, IEC 62153‑4‑4 [1]1 and IEC 62153-4-15. This method is applicable for homogenous screens, i.e. screens having a transfer impedance directly proportional to length. The transfer impedance can have any frequency behaviour, i.e. it could have a behaviour where it does not increase with 20 dB per decade as observed for screens made of a foil and a braid.

Prüfverfahren für metallische Kommunikationskabel und andere passive Bauteile - Teil 4-16: Elektromagnetische Verträglichkeit (EMV) - Erweiterung des Frequenzbereiches zu höheren Frequenzen für den Kopplungswiderstand und zu niedrigeren Frequenzen für die Schirmdämpfung bei Messungen mit dem Triaxialverfahren

Méthodes d'essai des câbles métalliques et autres composants passifs - Partie 4-16: Compatibilité électromagnétique (CEM) - Extension de la plage de fréquences à des fréquences supérieures pour l'impédance de transfert et à des fréquences inférieures pour mesurer l'affaiblissement d'écran à l'aide d'un montage triaxial

IEC 62153-4-16:2021 décrit une méthode d'extrapolation des résultats d'essai de l'impédance de transfert à des fréquences supérieures et des résultats d'essai de l'affaiblissement d'écran à des fréquences inférieures mesurées à l'aide d'un montage triaxial selon l'IEC 62153-4-3, l’IEC 62153-4-4 [1] et l'IEC 62153-4-15, respectivement. Cette méthode s'applique aux écrans homogènes, c'est-à-dire aux écrans dont l'impédance de transfert est directement proportionnelle à la longueur. Cette deuxième édition annule et remplace la première édition parue en 2016.Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - Remplacement de la formule de conversion, qui était limitée à un DUT adapté, par une nouvelle formule correspondant à toutes les conditions de charge.

Preskusne metode za kovinske kable in druge pasivne komponente - 4-16. del: Elektromagnetna združljivost (EMC) - Razširitev frekvenčnega območja na višje frekvence za merjenje prenosne impedance in na nižje frekvence za merjenje zaslonskega slabljenja z uporabo triosne nastavitve (IEC 62153-4-16:2021)

Ta del standarda IEC 62153 določa metodo za ekstrapoliranje rezultatov preskusa prenosne impedance na višje frekvence in rezultatov preskusa zaslonskega slabljenja na nižje frekvence, kadar se meritve izvajajo z uporabo triosne nastavitve v skladu s standardi IEC 62153-4-3, IEC 62153‑4‑4 [1]1 in IEC 62153-4-15. Ta metoda se uporablja za homogene zaslone, tj. zaslone s prenosno impedanco, ki je neposredno sorazmerna z dolžino. Prenosna impedanca ima lahko poljubno frekvenčno obnašanje, tj. obnašanje, pri katerem se ne poveča za 20 dB na dekado, kot je mogoče opaziti pri zaslonih iz folije in mreže.

General Information

• Status: Published
• Publication Date: 30-Sep-2021
• ICS: 33.120.10 - Coaxial cables. Waveguides
• Technical Committee: CLC/TC 46X - Communication cables
• Drafting Committee: IEC/TC 46 - IEC_TC_46
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 01-Oct-2021
• Completion Date: 01-Oct-2021
• Ref Project: SIST EN IEC 62153-4-16:2021 - Metallic cables and other passive components test methods - Part 4-16: Electromagnetic compatibility (EMC) - Extension of the frequency range to higher frequencies for transfer impedance and to lower frequencies for screening attenuation measurements using the triaxial set-up (IEC 62153-4-16:2021)

Relations

• Corrected By: EN IEC 62153-4-16:2021/AC:2023-11 - Metallic cables and other passive components test methods - Part 4-16: Electromagnetic compatibility (EMC) - Extension of the frequency range to higher frequencies for transfer impedance and to lower frequencies for screening attenuation measurements using the triaxial set-up
• Effective Date: 14-Nov-2023

Overview

EN IEC 62153-4-16:2021 specifies a validated method to extend the useful measurement frequency range when testing metallic cables and passive components for electromagnetic compatibility (EMC). Using the triaxial set-up, this part of IEC 62153 defines how to:

• extrapolate measured transfer impedance results to higher frequencies, and
• extrapolate measured screening attenuation (shielding attenuation) results to lower frequencies.

The method is intended for homogeneous screens (screens whose transfer impedance is directly proportional to length) and accepts any frequency behaviour of transfer impedance - it does not assume the typical +20 dB/decade slope seen with foil-and-braid constructions.

Key topics and requirements

• Extrapolation method: Provides rules and procedures to extend measured data beyond the direct measurement band when using the triaxial arrangement per IEC 62153-4-3, IEC 62153‑4‑4 and IEC 62153-4-15.
• Applicability: Limited to homogeneous screens; requires measurements made with the standardized triaxial set-up.
• Frequency behaviour: Recognizes arbitrary transfer impedance frequency responses; does not rely on an assumed 20 dB/decade increase.
• Conversion and modelling: The 2021 edition updates the conversion approach (replacing a previous conversion formula limited to matched DUTs with a formula suitable for any load conditions).
• Test head and geometry considerations: Addresses how the triaxial test head and circuit impedances influence extrapolation (see clauses on frequency behaviour and circuit permittivity/impedance).

Applications

This standard is practical for:

• EMC test laboratories needing to report transfer impedance or screening attenuation beyond direct measurement bands.
• Cable and connector manufacturers validating shielding performance across extended frequency ranges for product development and qualification.
• EMC engineers and compliance officers assessing shielding effectiveness and predicting real-world performance where direct measurements are limited.
• Use cases include shielding performance prediction, troubleshooting unexpected coupling at higher frequencies, and supporting compliance or design decisions when physical measurement bandwidth is constrained.

Related standards

• IEC 62153-4-3 - Triaxial method for surface transfer impedance
• IEC 62153-4-4 - (Referenced for triaxial procedures)
• IEC 62153-4-15 - Test method for measuring transfer impedance and screening attenuation with triaxial cell

By applying EN IEC 62153-4-16:2021, practitioners can confidently extend transfer impedance and screening attenuation data measured on a triaxial setup to frequency regions relevant for EMC analysis, while respecting limitations for homogeneous screen types.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2021
Preskusne metode za kovinske kable in druge pasivne komponente - 4-16. del:
Elektromagnetna združljivost (EMC) - Razširitev frekvenčnega območja na višje
frekvence za merjenje prenosne impedance in na nižje frekvence za merjenje
zaslonskega slabljenja z uporabo triosne nastavitve (IEC 62153-4-16:2021)
Metallic cables and other passive components test methods - Part 4-16: Electromagnetic
compatibility (EMC) - Extension of the frequency range to higher frequencies for transfer
impedance and to lower frequencies for screening attenuation measurements using the
triaxial set-up (IEC 62153-4-16:2021)
Prüfverfahren für metallische Kommunikationskabel - Teil 4-16: Elektromagnetische
Verträglichkeit (EMV) – Erweiterung des Frequenzbereiches zu höheren Frequenzen für
den Kopplungswiderstand und zu niedrigeren Frequenzen für die Schirmdämpfung bei
Messungen mit dem Triaxialverfahren (IEC 62153-4-16:2021)
Méthodes d'essai des câbles métalliques et autres composants passifs - Partie 4-16:
Compatibilité électromagnétique (CEM) - Extension de la plage de fréquences à des
fréquences supérieures pour l'impédance de transfert et à des fréquences inférieures
pour mesurer l'affaiblissement d'écran à l'aide d'un montage triaxial (IEC 62153-4-
16:2021)
Ta slovenski standard je istoveten z: EN IEC 62153-4-16:2021
ICS:
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
33.120.10 Koaksialni kabli. Valovodi Coaxial cables. Waveguides
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62153-4-16

NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2021
ICS 33.120.10
English Version
Metallic cables and other passive components test methods -
Part 4-16: Electromagnetic compatibility (EMC) - Extension of
the frequency range to higher frequencies for transfer
impedance and to lower frequencies for screening attenuation
measurements using the triaxial set-up
(IEC 62153-4-16:2021)
Méthodes d'essai des câbles métalliques et autres Prüfverfahren für metallische Kommunikationskabel - Teil 4-
composants passifs - Partie 4-16: Compatibilité 16: Elektromagnetische Verträglichkeit (EMV) - Erweiterung
électromagnétique (CEM) - Extension de la plage de des Frequenzbereiches zu höheren Frequenzen für den
fréquences à des fréquences supérieures pour l'impédance Kopplungswiderstand und zu niedrigeren Frequenzen für
de transfert et à des fréquences inférieures pour mesurer die Schirmdämpfung bei Messungen mit dem
l'affaiblissement d'écran à l'aide d'un montage triaxial Triaxialverfahren
(IEC 62153-4-16:2021) (IEC 62153-4-16:2021)
This European Standard was approved by CENELEC on 2021-09-28. 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
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
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
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62153-4-16:2021 E

European foreword
The text of document 46/817/FDIS, future edition 2 of IEC 62153-4-16, prepared by IEC/TC 46
“Cables, wires, waveguides, RF connectors, RF and microwave passive components and
accessories” was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022–06–28
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024–09–28
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.
Endorsement notice
The text of the International Standard IEC 62153-4-16:2021 was approved by CENELEC as a
European Standard without any modification.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 62153-4-3 2013 Metallic communication cable test methods - -
- Part 4–3: Electromagnetic compatibility
(EMC) - Surface transfer impedance -
Triaxial method
IEC 62153-4-15 - Metallic cables and other passive EN IEC 62153-4-15 -
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 62153-4-16 ®
Edition 2.0 2021-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Metallic cables and other passive components test methods –

Part 4-16: Electromagnetic compatibility (EMC) – Extension of the frequency

range to higher frequencies for transfer impedance and to lower frequencies for

screening attenuation measurements using the triaxial set-up

Méthodes d’essai des câbles métalliques et autres composants passifs –

Partie 4-16: Compatibilité électromagnétique (CEM) – Extension de la plage de

fréquences à des fréquences supérieures pour l’impédance de transfert et à des

fréquences inférieures pour mesurer l’affaiblissement d’écran à l’aide d’un

montage triaxial
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.120.10 ISBN 978-2-8322-1010-1

– 2 – IEC 62153-4-16:2021 © IEC 2021
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviated terms . 5
3.1 Terms and definitions . 5
3.2 Abbreviated terms . 6
4 Overview . 6
5 Frequency behaviour of the triaxial set-up . 7
6 Extrapolation of transfer impedance measurement results . 9
6.1 General . 9
6.2 Example of a measurement according to IEC 62153-4-3, Method B . 9
6.3 Example of a measurement according to IEC 62153-4-3, Method C . 10
7 Extrapolation of screening attenuation measurement results . 12
8 Determination of the relative dielectric permittivity and impedance of the inner and
outer circuits . 14
8.1 General . 14
8.2 Influence of the test head . 17
Bibliography . 20

Figure 1 – Simulation of the scattering parameter S (left hand scale) and the transfer
impedance (right hand scale) for a single braid screen . 7
Figure 2 – Comparison of formulae for conversion between forward transfer scattering
parameter and transfer impedance . 9
Figure 3 – Example of the extrapolation of the transfer impedance of an RG59 type
cable. 10
Figure 4 – Measurement of transfer impedance of a single braided cable . 11
Figure 5 – Conversion of measured scattering parameter S to the transfer impedance
M
of a single braided cable . 12
Figure 6 – Example of the extrapolation of the scattering parameter S in logarithmic
frequency scale of an RG59 type cable . 13
Figure 7 – Example of the extrapolation of the scattering parameter S in linear
frequency scale of an RG59 type cable . 14
Figure 8 – Measurement of S of the outer circuit (tube) having a length of 203 cm . 16
Figure 9 – Example of test head (COMET set-up) . 17
Figure 10 – Example of how to obtain the electrical length of the test head from the
S measurement using a bare copper wire as DUT (COMET set-up) . 18
Figure 11 – Example of an RG58 type cable in 2 m triaxial set-up (COMET) . 19

Table 1 – Parameters for simulation of triaxial set-up . 8

IEC 62153-4-16:2021 © IEC 2021 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
METALLIC CABLES AND OTHER
PASSIVE COMPONENTS TEST METHODS –

Part 4-16: Electromagnetic compatibility (EMC) –
Extension of the frequency range to higher frequencies
for transfer impedance and to lower frequencies for screening
attenuation measurements using the triaxial set-up

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.
IEC 62153-4-16 has been prepared by IEC technical committee 46: Cables, wires,
waveguides, RF connectors, RF and microwave passive components and accessories. It is an
International Standard.
This second edition cancels and replaces the first edition published in 2016. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– Replacement of the conversion formula which was limited to a matched DUT by a new
conversion formula suitable for any load conditions.

– 4 – IEC 62153-4-16:2021 © IEC 2021
The text of this International Standard is based on the following documents:
FDIS Report on voting
46/817/FDIS 46/826/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement,
available at www.iec.ch/members_experts/refdocs. The main document types developed by
IEC are described in greater detail at www.iec.ch/standardsdev/publications.
A list of all parts in the IEC 62153 series, published under the general title Metallic cables and
other passive components test methods, can be found on the IEC website.
Future documents in this series will carry the new general title as cited above. Titles of
existing documents in this series will be updated at the time of the next edition.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates that it
contains colours which are considered to be useful for the correct understanding of its
contents. Users should therefore print this document using a colour printer.

IEC 62153-4-16:2021 © IEC 2021 – 5 –
METALLIC CABLES AND OTHER
PASSIVE COMPONENTS TEST METHODS –

Part 4-16: Electromagnetic compatibility (EMC) –
Extension of the frequency range to higher frequencies
for transfer impedance and to lower frequencies for screening
attenuation measurements using the triaxial set-up

1 Scope
This part of IEC 62153 specifies a method to extrapolate the test results of transfer
impedance to higher frequencies and the test results of screening attenuation to lower
frequencies when measured with the triaxial set-up in accordance with IEC 62153-4-3,
IEC 62153‑4‑4 [1] and IEC 62153-4-15. This method is applicable for homogenous screens,
i.e. screens having a transfer impedance directly proportional to length. The transfer
impedance can have any frequency behaviour, i.e. it could have a behaviour where it does not
increase with 20 dB per decade as observed for screens made of a foil and a braid.
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.
IEC 62153-4-3:2013, Metallic communication cable test methods – Part 4-3: Electromagnetic
compatibility (EMC) – Surface transfer impedance – Triaxial method
IEC 62153-4-15, Metallic communication cable test methods – Part 4-15: Electromagnetic
compatibility (EMC) – Test method for measuring transfer impedance and screening
attenuation – or coupling attenuation with triaxial cell
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
__________
Numbers in square brackets refer to the bibliography.

– 6 – IEC 62153-4-16:2021 © IEC 2021
3.2 Abbreviated terms
CUT cable under test
DUT device under test
TDR time domain reflectometer
VNA vector network analyser
4 Overview
The triaxial set-up can be used to measure both the surface transfer impedance
(IEC 62153-4-3, IEC 62153-4-15) and the screening attenuation (IEC 62153-4-4,
IEC 62153-4-15). The transfer impedance is in general measured with a coupling length of
maximum 0,5 m resulting in an upper frequency limit of around 100 MHz, whereas the
screening attenuation is in general measured with a coupling length of 2 m to 3 m resulting in
an upper frequency limit for the transfer impedance of around 10 MHz and a lower frequency
limit for the screening attenuation of around 100 MHz (see also IEC TS 62153-4-1:2014,
Clauses 8 and 9 [2]).
Figure 1 shows the grey zone between electrically short (measurement range for the transfer
impedan
...