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

IEC 62153-4-15:2021 is available as IEC 62153-4-15:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
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

IEC 62153-4-15:2021 est disponible sous forme de IEC 62153-4-15:2021 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
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
• ICS: 33.100.10 - Emission
• ICS: 33.120.10 - Coaxial cables. Waveguides
• Technical Committee: TC 46 - Cables, wires, waveguides, RF connectors, RF and microwave passive components and accessories
• Current Stage: PPUB - Publication issued
• Completion Date: 03-Aug-2021

Standards Content (sample)

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
IEC 62153-4-15:2021-08(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
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

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 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

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IEC 62153-4-15:2021 © IEC 2021 – 3 –

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 ....................................................................................................................... 44

Figure 1 – Definition of Z ..................................................................................................... 8

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

Figure A.4 – Coupling attenuation, principle of setup with multiport VNA and standard

head ................................................................................................................................... 27

Figure B.1 – Principle depiction of the triaxial cell to measure transfer impedance and

screening attenuation on a connector with tube-in-tube according to IEC 62153-4-7 ............. 28

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– 4 – IEC 62153-4-15:2021 © IEC 2021

Figure B.2 – Examples of different designs of triaxial cells ................................................... 29

Figure C.1 – Cavity or rectangular waveguide ...................................................................... 30

Figure C.2 – Comparison of the measurements of a RG 214 cable with 40 mm tube

and triaxial cells .................................................................................................................. 31

Figure C.3 – Principle of the triaxial cell with tube in tube and ferrite tiles as absorber ......... 31

Figure C.4 – Comparison of the measurements of an RG 214 with 40 mm tube and

triaxial cells with magnetic absorber .................................................................................... 32

Figure C.5 – Examples of magnetic flat absorber ................................................................. 32

Figure C.6 – Setup for correction measurement ................................................................... 33

Figure C.7 – Correction measurement ................................................................................. 33

Figure D.1 – Measured coupling transfer function of a braided screen versus frequency

with the triaxial cell ............................................................................................................. 34

Figure D.2 – Cross-section of triaxial cell with movable shorting plane ................................. 36

Figure D.3 – Crosscut of plane shortening housing and tube-in-tube .................................... 36

Figure D.4 – Detail H of Figure D.3: contact between plane and housing .............................. 37

Figure D.5 – Detail G of Figure D.3: contact between plane and tube-in-tube ....................... 37

Figure D.6 – Compilation of transfer impedance test results with different shorting

plane distances .................................................................................................................. 38

Figure E.1 – Example of forward transfer scattering parameter S for different

impedances in the outer circuit where the receiver input impedance is 50 Ω ......................... 39

Figure E.2 – DUT with uniform cylindrical shape in the centre of the cell .............................. 40

Figure F.1 – Principle of the test setup to measure transfer impedance and screening

or coupling attenuation of connectors .................................................................................. 41

Figure F.2 – Principle of the test setup to measure transfer impedance and screening

attenuation on a cable assembly ......................................................................................... 41

Figure G.1 – Measurement with HP8753D of S of a 3 dB attenuator .................................. 42

Figure G.2 – Measurement with ZVRE of S of a 3 dB attenuator ....................................... 43

Table 1 – IEC 62153-4 series, Metallic communication cable test methods – Test

procedures with triaxial test setup ....................................................................................... 10

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IEC 62153-4-15:2021 © IEC 2021 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
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
FOREWORD

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rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 62153-4-15 has been prepared by IEC technical committee 46:

Cables, wires, waveguides, R.F. connectors, R.F. and microwave passive components and

accessories.

This second edition cancels and replaces the first edition published in 2015. This edition

constitutes a technical revision.

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;
---------------------- Page: 7 ----------------------
– 6 – IEC 62153-4-15:2021 © IEC 2021
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 Z .
The text of this International Standard is based on the following documents:
FDIS Report on voting
46/814/FDIS 46/822/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 the parts in the IEC 62153-4 series, published under the general title Metallic

communication cable test methods – Electromagnetic compatibility (EMC), can be found on the

IEC website.

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 publication 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.
---------------------- Page: 8 ----------------------
IEC 62153-4-15:2021 © IEC 2021 – 7 –
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
1 Scope

This part of IEC 62153 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.

Measurements can be achieved by applying the device under test directly to the triaxial cell or

with the tube-in-tube method in accordance with IEC 62153-4-7.
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 61196-1, Coaxial communication cables – Part 1: Generic specification – General,

definitions and requirements
IEC TS 62153-4-1:2014, Metallic communication cable test methods – Part 4-1:
Electromagnetic Compatibility (EMC) − Introduction to electromagnetic screening
measurements

IEC 62153-4-3, Metallic communication cable test methods – Part 4-3: Electromagnetic

compatibility (EMC) − Surface transfer impedance − Triaxial method

IEC 62153-4-4:2015, Metallic communication cable test methods – Part 4-4: Electromagnetic

compatibility (EMC) – Test method for measuring of the screening attenuation a up to and

above 3 GHz, triaxial method

IEC 62153-4-7, Metallic communication cable test methods – Part 4-7: Electromagnetic

compatibility (EMC) – Test method for measuring the transfer impedance Z and the screening

attenuation as or coupling attenuation ac of connectors and assemblies up to and above 3 GHz

– Triaxial Tube in tube method

IEC 62153-4-8, Metallic cables and other passive components – Test methods – Part 4-8:

Electromagnetic compatibility (EMC) – Capacitive coupling admittance

IEC 62153-4-9:2018, Metallic communication cable test methods – Part 4-9: Electromagnetic

compatibility (EMC) – Coupling attenuation of screened balanced cables, triaxial method

IEC 62153-4-10, Metallic communication cable test methods – Part 4-10: Electromagnetic

compatibility (EMC) – Transfer impedance and screening attenuation of feed-throughs and

electromagnetic gaskets – Double coaxial test method
---------------------- Page: 9 ----------------------
– 8 – IEC 62153-4-15:2021 © IEC 2021

IEC 62153-4-16, Metallic communication cable 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
3 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 61196-1 and the

following apply.
3.1
triaxial cell
rectangular housing in analogy to the principles of the triaxial te
...