GB/T 6113.201-2018Specification 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).

The drafting organizations of this Part. Shanghai Electrical Apparatus Research Institute; China

Electronic Standardization Institute; Shanghai SANKI Electronics Industry Co., Ltd.; State

Grid Electric Power Research Institute; Nanjing Rongce Testing Technology Co., Ltd.; China

Shipbuilding Electromagnetic Compatibility Testing Center; Xiamen Products Quality

Supervision & Inspection Institute; Shaanxi Hitech Electronic Co., Ltd.; Jiangsu Electronic

Information Product Quality Supervision & Inspection Institute.

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.

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