GB/T 6113.203-2025Specification for radio disturbance and immunity measuring apparatus and methods - Part 2-3: Methods of measurement of disturbances and immunity - Radiated disturbance measurements (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

Drafting.

GB/T (Z)6113, "Specification for Radio Interference and Immunity Measurement Equipment and Methods", is a fundamental standard for electromagnetic compatibility.

This document is Part 2-3 of GB/T (Z) 6113.GB/T (Z) 6113 has the following parts published.

Part 1: Radio Interference and Immunity Measurement Equipment

---Part 1-1.Radio Interference and Immunity Measurement Equipment;

---Part 1-2.Coupling devices for conducted interference measurements of radio disturbance and immunity measurement equipment;

---Parts 1-3.Radio Interference and Immunity Measurement Equipment and Auxiliary Equipment Interference Power;

---Parts 1-4.Radio Interference and Immunity Measurement Equipment, Antennas for Radiated Interference Measurement, and Test Sites;

---Parts 1-5.Radio Interference and Immunity Measurement Equipment, 5MHz~18GHz Antenna Calibration Site and Reference Test site;

---Parts 1-6.EMC antenna calibration for radio disturbance and immunity measurement equipment.

Part 2: Methods for Measuring Radio Interference and Immunity

---Part 2-1.Radio Interference and Immunity Measurement Methods - Conducted Interference Measurement;

---Part 2-2.Radio Interference and Immunity Measurement Methods - Interference Power Measurement;

---Parts 2-3.Methods for Measuring Radio Interference and Immunity; Radiated Interference Measurement;

---Parts 2-4.Radio Interference and Immunity Measurement Methods; Immunity Measurement;

---Parts 2-5.On-site measurements of large equipment disturbance launches.

Part 3: Technical Report on Radio Interference and Immunity Measurement

---Part 3: Technical Report on Radio Interference and Immunity Measurement Part 4: Uncertainty, Statistics, and Limit Modeling

---Part 4-1.Uncertainty, Statistics and Limit Modeling - Uncertainty in Standardized EMC Tests;

---Part 4-2.Uncertainty, Statistics and Limit Modeling. Uncertainty of Measurement Equipment and Facilities;

---Part 4-3.Uncertainty, Statistics, and Limit Modeling. Statistical Considerations for Determining EMC Compliance of Batch Products;

---Part 4-4.Uncertainty, Statistics, and Limit Modeling; Statistical Analysis of Complaints and Limit Calculation Models for Protecting Radio Services;

---Parts 4-5.Uncertainty, Statistics and Limits Modeling. Conditions for Using Alternative Experimental Methods this document replaces GB/T 6113.203-2020 "Specifications for Radio Interference and Immunity Measurement Equipment and Methods - Part 2-3".

"Methods for Measuring Radio Interference and Immunity - Radiated Interference Measurement", compared with GB/T 6113.203-2020, except for structural adjustments and editorial changes.

Aside from the modifications, the main technical changes are as follows.

---The terms "open test area/semi-anechoic chamber with absorbing material" (see 3.1.1, 2020 version 3.1.1) and "common mode" have been changed.

"Absorption device" (see 3.1.9, 2020 edition), "Test device" (see 3.1.14, 2020 edition), "Large-scale circulatory system" "Line System" (see 3.1.16, 2020 version of 3.1.16), "Product Standard" (see 3.1.21, 2020 version of 3.1.21);

---Added terms. "compliance test site," "far-field region," "near-field effect," "test space," "test device space," and "protection distance." "Feed point of small EUT and shielded loop antenna" (see 3.1.29~3.1.36);

---The full name of the abbreviation "UFA" has been changed (see 3.2, 2020 version 3.2);

---General requirements for test methods that have been modified for radiated emissions measurement (see 7.1.1, 7.1 in the 2020 edition);

---Added an overview of the maximum EUT space determined based on the measurement method, frequency range, and measurement distance (see 7.1.2);

---The measured quantity (1 GHz to 18 GHz) in the anechoic chamber and OATS/SAC measurements (with absorbing material) was modified (see 7.6.1).

(2020 version 7.6.1)

---The measurement distance for OATS/SAC measurements (1GHz~18GHz) in a fully anechoic chamber and with absorbing material was changed (see...).

7.6.2 (2020 version of 7.6.2);

---The measurement equipment for OATS/SAC measurements (1GHz~18GHz) in a fully anechoic chamber and with absorbing material was modified (see [link]).

Version 7.6.5 (2020 version 7.6.5)

---The measurement procedure for OATS/SAC measurements (1GHz~18GHz) in a fully anechoic chamber and with absorbing material has been modified.

General instructions for measuring radiation field strength above 1 GHz (see 7.6.6.1, 2020 version of 7.6.6.1);

---The final measurement procedure for OATS/SAC measurements (1GHz~18GHz) in a fully anechoic chamber and with absorbing material has been modified.

(See 7.6.6.2.4, 2020 version of 7.6.6.2.4);

---Increased open test area or semi-anechoic chamber measurement (9kHz~30MHz) (see 7.11).

This document is equivalent to CISPR 16-2-3.2023, "Specifications for equipment and methods of measuring radio disturbances and immunity, Parts 2-3".

Part 1: Measurement methods for radio interference and immunity, radiated interference measurement.

The following minimal editorial changes have been made to this document.

---Notes concerning French terms in sections 3.1.5, 3.1.6, 3.1.9, 3.1.14, 3.1.15, 3.1.16, and 3.1.20 have been deleted;

---The replacement descriptions for the English and Chinese expressions of terminology 3.1.30 have been removed;

---For ease of reading, the numbering of Figures 21 to 26 has been modified to reflect their order of appearance (corresponding to CISPR 16-2-3.2023).

Figures 22, 23, 25, 26, 27, and 24).

---For ease of reading, the serial numbers in Tables 3 through 10 have been modified and arranged in the order of their appearance (corresponding to CISPR 16-2-3.2023).

Tables 8-12, Tables 5-7);

---For easier reading, the numbers of formulas (14) to (25) have been changed to be arranged in the order of their appearance [corresponding to CISPR 16-2-Formula (22) of 3.2023, the two formulas in 7.7.2.1, formulas (14) to (21) and (23)];

---Correct "TO" to "Tp" in the caption of Figure 1;

---The reference in footnote b of Table 6, "Table 4 of CISPR 16-1-4", should be corrected to "Table 5 of GB/T 6113.104-2025";

---Correct "Based on the value of dphase in formula (11), it can be known" in 7.3.1 to "Based on the value of dphase in formula (9)";

---Correct "q" to "b" in Figure 15;

---The statement in C.1, "Chapter 6 provides detailed specifications for receivers used for measuring average values in the 9kHz to 1GHz range," is corrected to.

Chapter 7 of GB/T 6113.101-2021 provides detailed specifications for receivers used for measuring average values in the 9kHz to 18GHz range.

Regulation".

---Added the distance unit m in F.4.4 for "d2=5m correction to 4.4dB, d2=10m correction to 10.5dB".

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed and is under the jurisdiction of the National Technical Committee on Radio Interference Standardization (SAC/TC79).

Introduction

To standardize electromagnetic compatibility (EMC) measurements, consider measurement uncertainties, provide relevant background information, and classify EMC products...

The formulation and revision of standards laid the technical foundation. GB/T (Z)6113 "Specification for Measurement Equipment and Methods for Radio Interference and Immunity" stipulates the requirements for radio interference and immunity measurement.

The model for measuring electrical disturbance and immunity, including measurement equipment, methods, technical requirements for measurement uncertainty, and calculation limits, consists of four parts.

Part 1 specifies the equipment for measuring radio interference and immunity; Part 2 specifies the methods for measuring radio interference and immunity; Part 3...

Technical report on radio interference and immunity measurement; Part 4 covers uncertainty, statistics, and limit modeling.

Part 2 is proposed to be divided into 5 parts.

---Part 2-1.Radio Interference and Immunity Measurement Methods Conducted Interference Measurement. The purpose is to clarify the types of interference and measurement methods.

Equipment connection, general requirements and conditions for measurement, conducted interference measurement methods, automatic measurement of emissions, and CDNE test setup.

and measurement procedures.

---Part 2-2.Radio Interference and Immunity Measurement Methods Interference power measurement. The purpose is to identify interference types and measurement equipment.

Equipment connection, general requirements and conditions for measurement, absorber clamp measurement method, automatic measurement of emission.

---Parts 2-3.Radio Interference and Immunity Measurement Methods Radiated Interference Measurement. The purpose is to clarify the types of interference and measurement equipment.

Equipment connection, general requirements and conditions for measurement, radiated disturbance measurement methods, and automatic measurement of emissions.

---Parts 2-4.Radio Interference and Immunity Measurement Methods. Immunity measurement aims to clarify immunity test criteria and...

General measurement procedures, conducted signal immunity measurement procedures, and radiated electric field immunity measurement procedures.

---Parts 2-5.Radio Interference and Immunity Measurement Methods - On-site Measurement of Interference Emissions from Large Equipment. The purpose is to clarify the current...

Field measurement methods, field measurement methods for conducted interference, and field measurement methods for radiated interference.

Radio interference and immunity measurement equipment and measurement method specifications Parts 2-3.Radio Interference and Immunity Measurement Method. Radiated Disturbance Measurement

1 Scope

This document specifies the measurement method for radiated emissions in the 9kHz–18GHz frequency band. For a description of measurement uncertainty, see [link to documentation].

CISPRTR16-4-1 and CISPR16-4-2.

Note. According to IEC Guide 107, CISPR 16-2-3 is the basic electromagnetic compatibility (EMC) standard used by the IEC product committees. As per IEC Guide 107...

The product committee is responsible for determining the applicability of EMC standards. CISPR and its subcommittees (corresponding to the domestic SAC/TC79 technical committee) the committee and its subcommittees collaborate with these product committees in evaluating the value of specific trials for their particular products. The aforementioned product committees this corresponds to the relevant product technology committee domestic.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 6113.102-2018 Specification for Radio Interference and Immunity Measurement Equipment and Methods - Part 1-2.Radio Interference Coupling device for conducted disturbance measurement with immunity measurement equipment (CISPR16-1-2.2014, IDT) GB/T 6113.104-2025 Specification for Radio Interference and Immunity Measurement Equipment and Methods - Part 1-4.Radio Interference Immunity measurement equipment, antennas for radiated disturbance measurement, and test sites (CISPR 16-1-4.2023, IDT) Note. There are no technical differences between the content referenced in GB/T 6113.104-2025 and the content referenced in CISPR16-1-4.2019.

GB/T 6113.201-2025 Specification for Radio Interference and Immunity Measurement Equipment and Methods - Part 2-1.Radio Interference Immunity measurement methods for conducted disturbances (CISPR 16-2-1.2017, IDT) Note. The content referenced in GB/T 6113.201-2025 is not technically different from the content referenced in CISPR16-2-1.2014.

CISPR 16-1-1 Specification for apparatus and methods of measurement of radio disturbances and immunity - Part 1-1.Radio disturbances and immunity Note. GB/T 6113.101-2021 Specification for Radio Interference and Immunity Measurement Equipment and Methods Part 1-1.Radio Interference and Immunity Measurement Measuring equipment (CISPR 16-1-1.2019, IDT) CISPR 16-1-4 Specification for apparatus and methods of measurement of radio disturbances and immunity - Part 1-4.Radio disturbances and immunity CISPRTR 16-4-1 Specification for apparatus and methods of measurement of radio disturbances and immunity - Part 4-1.Uncertainty, statistical