JJF 2079-2023 English PDF

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JJF 2079-2023: Calibration Specification for Coupling/Decoupling Networks of Conducted Disturbances Induced by Radio-Frequency Fields Testing
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Basic data

Standard ID: JJF 2079-2023 (JJF2079-2023)
Description (Translated English): Calibration Specification for Coupling/Decoupling Networks of Conducted Disturbances Induced by Radio-Frequency Fields Testing
Sector / Industry: Metrology & Measurement Industry Standard
Word Count Estimation: 30,319
Date of Issue: 2023-10-12
Date of Implementation: 2024-04-12
Issuing agency(ies): State Administration for Market Regulation

JJF 2079-2023: Calibration Specification for Coupling/Decoupling Networks of Conducted Disturbances Induced by Radio-Frequency Fields Testing

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
National Metrology Technical Specifications of the People's Republic of China RF Conducted Immunity Coupling/Decoupling Networks Calibration specifications Released on 2023-10-12 Implemented on 2024-04-12 Released by the State Administration for Market Regulation RF Conducted Immunity Coupling/Decoupling Networks Calibration specifications Responsible unit: National Radio Measurement Technical Committee Main drafting unit: Shanghai Institute of Metrology and Testing Technology Jiangsu Institute of Metrology China Institute of Metrology The National Radio Measurement Technical Committee is entrusted with the interpretation of this specification: The main drafters of this specification: Zhan Zhiqiang (Shanghai Institute of Metrology and Testing Technology) Zhao Pinzhang (Jiangsu Institute of Metrology) Li Bo (China Institute of Metrology) Participating drafters: Teng Yulong (Shanghai Institute of Metrology and Testing Technology) Li Lin (Jiangsu Institute of Metrology) Lin Haoyu (China Institute of Metrology) Zhou Lei (Jiangsu Institute of Metrology)

Table of contents

Introduction(Ⅱ) 1 Scope(1) 2 Cited documents(1) 3 Terminology and units of measurement(1) 4 Overview(1) 5 Measuring characteristics(2) 5:1 Common mode impedance value at the equipment under test (EUT) end (2) 5:2 150Ω/50Ω adapter pair insertion loss(2) 5:3 Coupling coefficient(2) 5:4 Decoupling attenuation(2) 6 Calibration conditions(3) 6:1 Environmental conditions(3) 6:2 Equipment for calibration(3) 7 Calibration items and calibration methods (4) 7:1 Calibration items (4) 7:2 Calibration method(4) 8 Calibration result expression(8) 9 Recalibration time interval(9) Appendix A Original record inner page format (10) Appendix B Calibration Certificate Inner Page Format (14) Appendix C Example of calibration uncertainty assessment of major items (16) Appendix D 150Ω/50Ω adapter, common mode conversion adapter, coaxial-common mode adapter structure diagram (21) Appendix E Calibration method of common mode impedance value at the equipment under test (EUT) end 2 (23)

Introduction

JJF 1071-2010 "Rules for Writing National Measurement Calibration Specifications" and JJF 1059:1-2012 "Measurement Uncertainty" Assessment and Expression" together constitute the basic series of specifications that support the preparation of this specification: This specification was formulated with reference to GB/T 17626:6-2017 "Electromagnetic Compatibility Testing and Measurement Technology Radio Frequency Field" "Induced Conducted Disturbance Immunity", GB/T 17626:6-2017 is equivalent to IEC 61000-4-6:2013: This specification is released for the first time: RF Conducted Immunity Coupling/Decoupling Networks Calibration specifications

1 Scope

This specification applies to coupling/decoupling networks used in conducted disturbance immunity tests induced by radio frequency fields in the field of electromagnetic compatibility: Calibration of network (0:15MHz~230MHz):

2 cited documents

This specification references the following documents: GB/T 17626:6-2017 Electromagnetic compatibility test and measurement technology Conducted disturbance immunity induced by radio frequency fields Disturbance For dated references, only the dated version applies to this specification; for undated references, only the dated edition applies: The latest version (including all modification orders) shall apply to this specification:

3 Terminology and units of measurement

3:1 Couplingcoefficient The open circuit voltage obtained at the equipment under test (EUT) port of the coupling/decoupling network is the same as that applied to the RF input The ratio of the open circuit voltage on the (RFIN) terminal: The open circuit voltage obtained at the auxiliary equipment (AE) port of the coupling/decoupling network is the same as that applied to the RF input The ratio of the open circuit voltage on the (RFIN) terminal:

4 Overview

The function of the RF conducted immunity coupling/decoupling network (hereinafter referred to as the coupling/decoupling network) is to The signal is coupled to various cables connected to the equipment under test, and prevents disturbance signals from affecting non-test devices, equipment and systems: system: It has 3 ports: radio frequency input (RFIN) end, equipment under test (EUT) end and auxiliary equipment (AE) end end: Usually composed of metal casing, insulating parts, electronic components (power or signal terminals, radio frequency connectors, resistors, It is composed of inductors, capacitors) and other parts, and its structure is shown in Figure 1: Types mainly include: CDN-S type coupling/decoupling network for shielded cables, CDN-S type coupling/decoupling network for unshielded cables CDN-M type coupling/decoupling network, CDN-T type coupling/decoupling network for unshielded balanced lines, etc: Figure 2 shows a simplified circuit diagram of a CDN-M3 type coupling/decoupling network: ......

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