IEC 62153-4-16:2016 PDF

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

Название (английский):

IEC 62153-4-16:2016

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 18
Дата публикации:: 26 октября 2016 г.
Издание:: IEC IS 62153 edition 1 version 1
ICS:: 17.220.20

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Описание (английский):

IEC 62153-4-16:2016(E) describes 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 according to IEC 62153-4-3 (method B) respectively IEC 62153-4-4. A similar approach to extrapolate the test results of transfer impedance to higher frequencies was already described in IEC 61196-1:1995 Subclause 12.2. This method is applicable for homogenous screens, i.e. screens having a transfer impedance directly proportional to length. The transfer impedance may 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.

Технические детали

Технический комитет: TC 46 - Cables, wires, waveguides, RF connectors, RF and microwave passive components and accessories
SKU: IEC 62153-4-16:2016

Abstract

Overview

IEC 62153-4-16:2016 is part of the IEC 62153 series on metallic communication cable test methods. It defines a validated method to extend the frequency range of triaxial EMC measurements: extrapolating measured transfer impedance to higher frequencies and screening attenuation to lower frequencies when using the triaxial set-up (per IEC 62153-4-3 method B and IEC 62153-4-4). The procedure is intended for homogeneous screens (screen transfer impedance proportional to length) and accounts for the triaxial frequency behaviour through coupling equations and dielectric properties.

Key topics and requirements

Scope and purpose
- Extension of frequency coverage for triaxial measurements: higher frequencies for transfer impedance, lower frequencies for screening attenuation.
Applicability
- Applicable to homogeneous screens (transfer impedance ∝ length). The screen’s transfer impedance may follow any frequency behaviour (not necessarily +20 dB/decade).
Triaxial set-up parameters
- Uses the triaxial measurement geometry described in IEC 62153-4-3 and IEC 62153-4-4 (method B).
- Typical coupling lengths: transfer impedance measured with max ~0.5 m (upper limit ≈ 100 MHz); screening attenuation measured with 2–3 m coupling length (upper limit for transfer impedance ≈ 10 MHz, lower limit for screening attenuation ≈ 100 MHz).
Analytical basis
- Frequency behaviour derived from coupling equations (see IEC TS 62153-4-1) and depends on coupling length, relative dielectric permittivity of inner/outer circuits and impedance/load ratios.
- Some derivations neglect capacitive through-screen coupling and attenuation; the standard explains how to include test-head effects and extract electrical length.
Measurement prerequisites
- DUT (cable under test) matched at near/far ends for the presented equations.
- Determination of relative dielectric permittivity and test-head influence is required for reliable extrapolation.

Practical applications

Cable manufacturers: extend EMC characterization beyond direct measurement bands for product development and quality control.
Independent test labs and certification bodies: extrapolate triaxial test data to demonstrate compliance across wider frequency ranges without additional complex setups.
EMC engineers and system designers: assess shielding performance (transfer impedance and screening attenuation) over frequency ranges relevant to real-world installations.
R&D teams: compare braid/foil designs and predict shielding performance where direct measurement is impractical.

Related standards

IEC 62153-4-3 - Surface transfer impedance, triaxial method (method B)
IEC 62153-4-4 - Screening attenuation test method (triaxial)
IEC TS 62153-4-1 - Introduction to electromagnetic screening measurements
IEC 61196-1 and IEC TR 62152 - background on cable specifications and two-port transmission properties

Keywords: IEC 62153-4-16, transfer impedance, screening attenuation, triaxial set-up, EMC, metallic communication cable test methods, homogeneous screen, dielectric permittivity.

Overview

Key topics and requirements

Scope and purpose
- Extension of frequency coverage for triaxial measurements: higher frequencies for transfer impedance, lower frequencies for screening attenuation.
Applicability
- Applicable to homogeneous screens (transfer impedance ∝ length). The screen’s transfer impedance may follow any frequency behaviour (not necessarily +20 dB/decade).
Triaxial set-up parameters
- Uses the triaxial measurement geometry described in IEC 62153-4-3 and IEC 62153-4-4 (method B).
- Typical coupling lengths: transfer impedance measured with max ~0.5 m (upper limit ≈ 100 MHz); screening attenuation measured with 2–3 m coupling length (upper limit for transfer impedance ≈ 10 MHz, lower limit for screening attenuation ≈ 100 MHz).
Analytical basis
- Frequency behaviour derived from coupling equations (see IEC TS 62153-4-1) and depends on coupling length, relative dielectric permittivity of inner/outer circuits and impedance/load ratios.
- Some derivations neglect capacitive through-screen coupling and attenuation; the standard explains how to include test-head effects and extract electrical length.
Measurement prerequisites
- DUT (cable under test) matched at near/far ends for the presented equations.
- Determination of relative dielectric permittivity and test-head influence is required for reliable extrapolation.

Practical applications

Cable manufacturers: extend EMC characterization beyond direct measurement bands for product development and quality control.
Independent test labs and certification bodies: extrapolate triaxial test data to demonstrate compliance across wider frequency ranges without additional complex setups.
EMC engineers and system designers: assess shielding performance (transfer impedance and screening attenuation) over frequency ranges relevant to real-world installations.
R&D teams: compare braid/foil designs and predict shielding performance where direct measurement is impractical.

Related standards

IEC 62153-4-3 - Surface transfer impedance, triaxial method (method B)
IEC 62153-4-4 - Screening attenuation test method (triaxial)
IEC TS 62153-4-1 - Introduction to electromagnetic screening measurements
IEC 61196-1 and IEC TR 62152 - background on cable specifications and two-port transmission properties

Keywords: IEC 62153-4-16, transfer impedance, screening attenuation, triaxial set-up, EMC, metallic communication cable test methods, homogeneous screen, dielectric permittivity.

IEC 62153-4-16:2016 PDF

Технические детали

Abstract

Overview

Key topics and requirements

Practical applications

Related standards

Похожие стандарты

Abstract

Overview

Key topics and requirements

Practical applications

Related standards

Похожие стандарты

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