IEC 62153-4-12:2009

Metallic communication cable test methods - Part 4-12: Electromagnetic compatibility (EMC) - Coupling attenuation or screening attenuation of connecting hardware - Absorbing clamp method

IEC 62153-4-13:2009(E) details the method of test to determine the coupling attenuation or screening attenuation for connecting hardware used in analogue and digital communication systems. The test method details means to test one part of a connecting hardware (e. g. wall outlet or plug alone) as well as testing a mated pair of connecting hardware.
This publication is to be read in conjunction with IEC 62153-4-5:2006.

General Information

• Status: Published
• Publication Date: 05-Aug-2009
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• 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
• Drafting Committee: WG 5 - TC 46/WG 5
• Current Stage: PPUB - Publication issued
• Start Date: 31-Oct-2009
• Completion Date: 06-Aug-2009

Standards Content (Sample)

IEC 62153-4-12 ®
Edition 1.0 2009-08
INTERNATIONAL
STANDARD
colour
inside
Metallic communication cable test methods –
Part 4-12: Electromagnetic compatibility (EMC) – Coupling attenuation or
screening attenuation of connecting hardware – Absorbing clamp method

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IEC 62153-4-12 ®
Edition 1.0 2009-08
INTERNATIONAL
STANDARD
colour
inside
Metallic communication cable test methods –
Part 4-12: Electromagnetic compatibility (EMC) – Coupling attenuation or
screening attenuation of connecting hardware – Absorbing clamp method

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
M
ICS 33.100; 33.120.20 ISBN 978-2-88910-639-4
– 2 – 62153-4-12 © IEC:2009(E)
CONTENTS
FOREWORD.3

1 Scope.5
2 Normative references.5
3 Terms and definitions .5
4 Test method .5
4.1 Equipment .5
4.1.1 General .5
4.1.2 Balun requirements.6
4.1.3 Test head and extension cable requirements.7
4.1.4 Impedance matching.8
4.2 Test sample.8
4.2.1 Length of the extension cables.8
4.2.2 Tested length.8
4.2.3 Preparation of extension cable and test head .8
4.2.4 Balanced connecting hardware.8
4.3 Calibration procedure .9
4.4 Test set-up .9
4.4.1 General .9
4.4.2 Test set-up verification.10
4.5 Measuring procedure .11
5 Expression of test results.11
6 Test report.11
6.1 General .11
6.2 Evaluation of test results.11

Figure 1 – Measurement of surface wave at near end of connecting hardware .6
Figure 2 – Termination of extension cables.9
Figure 3 – Test set-up for a near end measurement of connecting hardware.10
Figure 4 – Test set-up for a near end measurement of connecting hardware.10
Figure 5 – Typical measurement of screened connecting hardware.12
Figure 6 – Typical measurement of an unscreened balanced connecting hardware .13
Figure 7 – Typical measurement of a screened balanced connecting hardware .13

Table 1 – Balun performance characteristics (30 MHz to 1 GHz).7

62153-4-12 © IEC:2009(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
METALLIC COMMUNICATION CABLE TEST METHODS –

Part 4-12: Electromagnetic compatibility (EMC) –
Coupling attenuation or screening attenuation
of connecting hardware – Absorbing clamp method

FOREWORD
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International Standard IEC 62153-4-12 has been prepared by IEC technical committee 46:
Cables, wires, waveguides, R.F. connectors, R.F. and microwave passive components and
accessories.
The text of this standard is based on the following documents:
CDV Report on voting
46/312/CDV 46/328/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication is to be read in conjunction with IEC 62153-4-5 (2006).

– 4 – 62153-4-12 © IEC:2009(E)

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 62153 series, under the general title: Metallic communication cable
test methods, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until the
maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version may be issued at a later date.

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 publication using a colour printer.

62153-4-12 © IEC:2009(E) – 5 –
METALLIC COMMUNICATION CABLE TEST METHODS –

Part 4-12: Electromagnetic compatibility (EMC) –
Coupling attenuation or screening attenuation
of connecting hardware – Absorbing clamp method

1 Scope
This part of IEC 62153 details the method of test to determine the coupling attenuation or
screening attenuation for connecting hardware used in analogue and digital communication
systems. The test method details means to test one part of a connecting hardware (e. g. wall
outlet or plug alone) as well as testing a mated pair of connecting hardware.
2 Normative references
The following referenced documents are indispensable for the application 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 60050-726, International Electrotechnical Vocabulary – Chapter 726: Transmission lines
and waveguides
IEC 61196-1, Coaxial communication cables – Part 1: Generic specification – General,
definitions and requirements
IEC 62153-4-5:2006, Metallic communication cables test methods – Part 4-5: Electromagnetic
compatibility (EMC) – Coupling or screening attenuation – Absorbing clamp method
ITU-T Recommendation G.117:1996, Transmission aspects of unbalance about earth
ITU-T Recommendation O.9:1999, Measuring arrangements to assess the degree of unbalance
about earth
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-726 and
IEC 61196-1 apply.
In this document, connecting hardware is defined as a complete connecting device including
compensating or matching networks (if any), connectors and cable terminations.
4 Test method
4.1 Equipment
4.1.1 General
See 5.1.1 of IEC 62153-4-5, and Figure 1 below.

– 6 – 62153-4-12 © IEC:2009(E)
The connecting hardware under test shall be terminated using the termination method and a
cable type for which it is constructed. If only one part of the connecting hardware is under test,
a test head shall be used to mate the part under test.
600 cm ± 10 cm
300 cm ± 5 cm 300 cm ± 5 cm
IEC  1342/09
Key
0 signal generator, output impedance Z
1 connecting hardware under test,
8 absorber (ferrite tube) of the clamp,
nominal characteristic impedance Z
operational attenuation > 10 dB
2 outer circuit of connecting hardware
9 absorber (or second clamp), operational
attenuation > 10 dB
under test, impedance Z2
10 termination of the far end extension cable
3 absorbing clamp, impedance Z
terminating the connecting hardware
4 measuring receiver
11 shield of signal generator and balun if needed
5 balun (if applicable)
for high dynamic range
6 current transformer of the clamp
12 reflector plate
7 measuring receiver cable (use the same
13 extension cable terminating the connecting
h
...