GB/T 6113.201-2025Specification for radio disturbance and immunity measuring apparatus and methods - Part 2-1: Methods of measurement of disturbances and immunity - Conducted disturbance measurements (English PDF)

Foreword

GB/T 6113 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods is a basic standard on electromagnetic compatibility. It is composed of the following four parts.

Part 1: Radio Disturbance and Immunity Measuring Apparatus

---Part 1-1.Radio Disturbance and Immunity Measuring Apparatus - Measuring Equipment;

---Part 1-2.Radio Disturbance and Immunity Measuring Apparatus - Coupling Devices for Conducted Disturbance Measurements;

---Part 1-3.Radio Disturbance and Immunity Measuring Apparatus - Ancillary Equipment - Disturbances Power;

---Part 1-4.Radio Disturbance and Immunity Measuring Apparatus - Radiated Disturbance Measuring Antenna and Test Site;

---Part 1-5.Radio Disturbance and Immunity Measuring Apparatus - Antenna Calibration Sites and Reference Test Sites for 30 MHz ~ 1,000 MHz;

---Part 1-6.Radio Disturbance and Immunity Measuring Apparatus - EMC Antenna Calibration.

Part 2: Methods of Measurement of Disturbances and Immunity

---Part 2-1.Methods of Measurement of Disturbances and Immunity - Conducted Disturbance Measurements;

---Part 2-2.Methods of Measurement of Disturbances and Immunity - Measurement of Disturbance Power;

---Part 2-3.Methods of Measurement of Disturbances and Immunity - Radiated Disturbance Measurements;

---Part 2-4.Methods of Measurement of Disturbances and Immunity - Immunity Measurements;

---Part 2-5.In Situ Measurements of Disturbing Emissions Produced by Physically Large Equipment.

Part 3: CISPR Technical Reports

---Part 3: CISPR Technical Reports.

Part 4: Uncertainties, Statistics and Limit Modeling

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

---Part 4-2.Uncertainties, Statistics and Limit Modeling - Measurement Instrumentation Uncertainty;

---Part 4-3.Uncertainties, Statistics and Limit Modeling - Statistical Considerations in the Determination of EMC Compliance of Mass-produced Products;

---Part 4-4.Uncertainties, Statistics and Limit Modeling - Statistics of Complaints and a Model for the Calculation of Limits;

---Part 4-5.Uncertainties, Statistics and Limit Modeling - Conditions for the Use of Alternative Test Methods.

This is Part 2-1 of GB/T 6113.

This Part was drafted in accordance with the rules in GB/T 1.1-2009.

This Part serves as a replacement of GB/T 6113.201-2017 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods - Part 2-1.Methods of Measurement of Disturbances and Immunity - Conducted Disturbance Measurements. In comparison with GB/T 6113.201-2017, the main technical changes are as follows.

---In accordance with the principle of equivalence, "NOTE" is added to the Scope to reflect the status of the EMC basic standard, and the relations between the product (category) standards of the relevant horizontal technical committees and the basic standard, and to consider necessary cooperation in the formulation of EMC standards;

---Four terms and definitions are added (see Chapter 3);

---Abbreviations are added (see 3.2);

---EUT arrangement is added (see 6.4.1);

---The working status of multi-function equipment is added (see 6.4.7);

---The determination of EUT arrangement that maximizes emissions is added (see 6.4.8);

---The recording of measurement results is added (see 6.4.9);

---The test set-up and measurement procedure using the CDNE in the frequency range 30 MHz ~ 300 MHz are added (see Chapter 9);

---The basic requirements for measurements on telecommunications ports are added (see Appendix G);

---The specific guidance for conducted disturbance measurements on telecommunication ports is added (see Appendix H);

---Examples of AANs and ANs used for screened cables are added (see Appendix I).

This Part adopts the translation method in the equivalent adoption of CISPR 16-2-1.2014 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods - Part 2-1.Methods of Measurement of Disturbances and Immunity - Conducted Disturbance Measurements.

The Chinese documents that have a consistent correspondence with the international documents normatively quoted in this Part are as follows.

---GB 4343.1-2018 Electromagnetic Compatibility Requirements for Household Appliances, Electric Tools and Similar Apparatus - Part 1: Emission (CISPR 14-1.2011, IDT);

---GB/T 4365-2003 Electro-technical Terminology - Electromagnetic Compatibility (IEC 60050 (161).1990, IDT);

---GB/T 6113.102-2008 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods - Part 1-2.Radio Disturbance and Immunity Measuring Apparatus - Ancillary Equipment - Conducted Disturbance (CISPR 16-1-2.2006, IDT);

---GB/T 6113.402-2018 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods - Part 4-2.Uncertainties, Statistics and Limit Modeling -Measurement Instrumentation Uncertainty (CISPR 16-4-2.2014, IDT).

This Part was proposed by and shall be under the jurisdiction of National Technical Committee 79 on Radio Interference of Standardization Administration of China (SAC/TC 79).

1 Scope

GB/T 6113 is designated a basic standard, which specifies the methods of measurement of disturbance phenomena in general in the frequency range 9 kHz to 18 GHz and especially of conducted disturbance phenomena in the frequency range 9 kHz to 30 MHz. With a CDNE, the frequency range is 9 kHz to 300 Hz.

2 Normative References

The following documents are indispensable to the application of this document. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this Document.

GB/T 6113.101-2016 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods of Measurement - Part 1-1.Radio Disturbance and Immunity Measuring Apparatus - Measuring Equipment (CISPR 16-1-1.2010, IDT)

3 Terms, Definitions and Abbreviations

network used to measure (or inject) asymmetric (common mode) voltages on unshielded symmetric signal (e.g. telecommunication) lines while rejecting the symmetric (differential mode) signal

4 Types of Disturbance to be Measured

Depending on the types of disturbance, measurements may be carried out using a measuring receiver with.

Measuring receivers incorporating these detectors are specified in GB/T 6113.101-2016.

5 Connection of Measuring Equipment

The artificial network (AN) shall be connected to the reference ground by a low RF impedance, e.g. by direct bonding of the case of the AN to the reference ground of a shielded room, or with a low impedance conductor as short and as wide as practical (the maximum length to width ratio of which is 3.1, and the inductance of which is less than approximately 50 nH corresponding to an impedance of less than approximately 10 ohm at 30 MHz). An in situ test of the voltage division factor as explained in Appendix E is recommended.

6 General Measurement Requirements and Conditions

The measurement signal-to-noise ratio with respect to ambient noise shall meet the following requirements. Should the ambient noise level exceed the required level, it shall be recorded in the test report.

The measuring receiver shall be kept tuned to the discrete frequency under investigation and retuned if the frequency fluctuates.

Where not specified in the product standard, the EUT shall be configured as described in the following paragraphs.

7 Measurement of Disturbances Conducted Along Leads, 9 kHz to 30 MHz

The common mode, differential and unsymmetric mode impedances of actual networks, such as of power mains and telecommunication networks, are location dependent and, in general, time varying.

8 Automated Measurement of Disturbances

The second step in the overall measurement procedure is used to reduce the number of signals collected during prescan and thus aimed at further reduction of the overall measurement time.

These processes can accomplish different tasks, e.g.

9 Test Set-up and Measurement Procedure Using the CDNE in the Frequency Range 30 MHz to 300 MHz in general, the level of asymmetric voltage is higher than the level of unintentional symmetric voltage. Therefore, a minimum longitudinal conversion loss (LCL) value of 20 dB is adequate to prevent any influences of the symmetric voltage on the measurement results. The CDNE, with a defined minimum LCL of 20 dB, is not appropriate for EUTs with an intentional differential mode on the mains network.