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GB/T 6113.202-2018 English PDF

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GB/T 6113.202-2018: Specification for radio disturbance and immunity measuring apparatus and methods -- Part 2-2: Methods of measurement of disturbances and immunity -- Measurement of disturbance power
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Basic data

Standard ID GB/T 6113.202-2018 (GB/T6113.202-2018)
Description (Translated English) Specification for radio disturbance and immunity measuring apparatus and methods -- Part 2-2: Methods of measurement of disturbances and immunity -- Measurement of disturbance power
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard L06
Classification of International Standard 33.100
Word Count Estimation 42,484
Date of Issue 2018-07-13
Date of Implementation 2019-02-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 6113.202-2018: Specification for radio disturbance and immunity measuring apparatus and methods -- Part 2-2: Methods of measurement of disturbances and immunity -- Measurement of disturbance power



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Specification for radio disturbance and immunity measuring apparatus and methods--Part 2-2. Methods of measurement of disturbances and immunity--Measurement of disturbance power ICS 33.100 L06 National Standards of People's Republic of China Replace GB/T 6113.202-2008 Radio disturbance and immunity measuring equipment and Measurement method specification Part 2-2. Radio disturbance and immunity measurement methods Disturbance power measurement apparatusandmethods-Part 2-2. Methodsofmeasurement (CISPR16-2-2..2010, IDT) 2018-07-13 released.2019-02-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Types of harassment tested 5 4.1 Overview 5 4.2 Types of Harassment 5 4.3 Function of the detector 6 5 Connection of measuring equipment 6 5.1 Overview 6 5.2 Connection of measuring auxiliary equipment 6 6 General requirements and conditions for measurement 6 6.1 Overview 6 6.2 Non-EUT harassment 6 6.3 Measurement of continuous disturbances 7 6.4 EUT operating conditions 7 6.5 Description of measurement results 7 6.6 Measurement time and sweep rate of continuous disturbance 8 7 Absorbing force measuring method 15 7.1 Introduction to ACMM 15 7.2 Application of the absorption clamp measurement method 16 7.3 Requirements for measuring instruments and test sites 16 7.4 Environmental Requirements 18 7.5 EUT lead requirements 18 7.6 Test layout requirements 18 7.7 EUT operating conditions 20 7.8 Measurement procedure 20 7.9 Determination of disturbance power 22 7.10 Determination of measurement uncertainty 22 7.11 Compliance Determination Criteria 22 8 Automatic measurement of emissions 22 8.1 Overview of automatic measurements 22 8.2 General Measurement Procedures 22 8.3 pre-scan 23 8.4 Data Screening 24 8.5 Selection of the maximum emission and final measurement 24 8.6 Data processing and report issuance 24 8.7 FFT-based measurement receiver emission measurement method 24 Appendix A (informative) Method for measuring interference power generated by household appliances and similar appliances in the Very High Frequency Band (VHF) Background 25 Appendix B (informative) Use of spectrum analyzers and scanning receivers 27 Appendix C (informative) Scanning rate and measurement time using the average detector 30 Appendix D (Normative) Applicability verification of spectrum analyzers for compliance testing 34 Reference 35

Foreword

GB/T 6113 "Specifications for Radio Disturbance and Immunity Measurement Equipment and Measurement Methods" is the basic standard for electromagnetic compatibility, and is composed of the following four departments. Sub-composition. Part 1. Specification for radio disturbance and immunity measuring equipment --- Part 1-1. Measurement equipment for radio disturbance and immunity measuring equipment; --- Part 1-2. Coupling devices for measurement of conducted disturbances in radio disturbance and immunity measuring devices; --- Part 1-3. Radio disturbance and immunity measuring equipment auxiliary equipment disturbance power; --- Part 1-4. Radio disturbance and immunity measuring equipment - Radiation disturbance measuring antennas and test sites; --- Part 1-5. Radio disturbance and immunity measuring equipment 30MHz~1000MHz antenna calibration test site; ---Part 1-6. EMC antenna calibration. Part 2. Radio disturbance and immunity measurement methods --- Part 2-1. Radio disturbance and immunity measurement methods - Conductive disturbance measurement; --- Part 2-2. Radio disturbance and immunity measurement methods - Harassment power measurement; --- Part 2-3. Radio disturbance and immunity measurement methods - Radiance disturbance measurement; --- Part 2-4. Radio disturbance and immunity measurement methods - Immunity measurement; --- Part 2-5. Field measurement of large equipment harassment emissions. Part 3. Technical report on radio disturbance and immunity measurement --- Part 3. Technical report on radio disturbance and immunity measurement. Part 4. Uncertainty, statistics, and limit modeling --- Part 4-1. Uncertainty, statistical and limit modeling Modeling EMC test uncertainty; --- Part 4-2. Uncertainty, statistics and limits modeling uncertainty of equipment and facilities; --- Part 4-3. Uncertainty, statistics and limits modeling statistical considerations for the determination of EMC compliance for batch products; --- Part 4-4. Calculation models for statistical and limit values for uncertainty, statistics and limit modeling; --- Part 4-5. Uncertainty, statistics and limits modeling conditions for the use of alternative test methods. This part is part 2-2 of GB/T 6113. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 6113.202-2008 "Specifications for Radio Disturbance and Immunity Measurement Equipment and Measurement Methods Part 2-2. Radio disturbance and immunity measurement method for disturbance power measurement, compared with GB/T 6113.202-2008, the main technical changes are as follows. --- Part of the normative reference file has changed; --- Added 8 terms (3.3 Measurement Auxiliary Equipment, 3.15 Measurement, 3.21 Test, 3.23.1 Weighted Disturbance Measurement, 3.23.2 Weighted Special Sex, 3.23.3 weighted detector, 3.23.4 weighting factor and 3.25 weighting function), deleted a term (formerly 3.5 grounding parameters) Test), some terms have been revised, and the term number has been updated compared to the previous version; --- Chapter 6, Chapter 8 to increase the description of the emission measurement method of the FFT-based measuring instrument; --- Added Appendix C "Scan Rate and Measurement Time Using Average Detector"; --- Added Appendix D "Validation of Applicability of Spectrum Analyzers for Compliance Testing". This section uses the translation method equivalent to CISPR16-2-2.2010 "Radio Disturbance and Immunity Measurement Equipment and Measurement Method Specification Part 2-2. Radio disturbance and immunity measurement method for disturbance power measurement. The documents of our country that have a consistent correspondence with the international documents referenced in this part are as follows. --- GB/T 6113.104-2016 Radio disturbance and immunity measuring equipment and measuring methods - Part 1-4. Radio Harassment and immunity measuring equipment for radiation disturbance measurement antennas and test sites (CISPR16-1-4..2012, IDT); --- GB/T 6113.402-2018 Radio disturbance and immunity measurement equipment and methods of measurement - Part 4-2. Uncertain Degree, statistics, and limits model the uncertainty of equipment and facilities (CISPR16-4-2.2014, IDT). This part is proposed and managed by the National Radio Interference Standardization Technical Committee (SAC/TC79). This section drafted by. Shanghai Electric Apparatus Research Institute, China Electronic Technology Standardization Research Institute, Zhongfa Shangdong (Shanghai) testing technology Limited company, Shanghai Sanji Electronic Industry Co., Ltd., Shaanxi Haitai Electronics Co., Ltd. The main drafters of this section. Xing Lin, Cui Qiang, Chen Yu, Yin Haixia, Shi Beina, Guo Enquan. The previous versions of the standards replaced by this section are. ---GB/T 6113.202-2008. Radio disturbance and immunity measuring equipment and Measurement method specification Part 2-2. Radio disturbance and immunity measurement methods Disturbance power measurement

1 Scope

This part of GB/T 6113 specifies the method of measuring the disturbance power using an absorption clamp in the frequency range of 30 MHz to 1000 MHz. Note. According to the IEC 107 guidelines, CISPR16-2-2 is the basic EMC standard used by the IEC product committee. As stated in the IEC 107 guidelines, products The committee is responsible for determining the applicability of this EMC standard. CISPR and its subcommittees (corresponding to the domestic SAC/TC79 technical committee) And its subcommittees) work with these product committees to assess the value of specific trials for their specific products. The above product committee corresponds Domestic related product technical committee.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 4365-2003 Electrotechnical terminology electromagnetic compatibility [IEC 60050 (161)..1990, IDT] GB/T 6113.101-2016 Radio disturbance and immunity measuring equipment and measuring methods - Part 1-1. Radio disturbance And immunity measuring equipment measuring equipment (CISPR16-1-1..2010, IDT) GB/T 6113.103-2008 - Radio disturbance and immunity measuring equipment and measuring methods - Part 1-3. Radio disturbance And immunity measurement equipment auxiliary equipment disturbance power (CISPR16-1-3.2004, IDT) CISPR16-1-4 Radio disturbance and immunity measuring equipment and methods of measurement - Part 1-4. Radio disturbance and immunity Radiation disturbance measurement antenna and test site for measuring equipment (Specificationforradiodisturbanceandimmunity measuringapparatusandmethods-Part 1-4.Radiodisturbanceandimmunitymeasuringapparatus- Antennasandtestsitesforradiateddisturbancemeasurements) CISPR16-4-2 Specification for Radioacoustic and Immunity Measurement Equipment and Measurement Methods - Part 4-2. Uncertainty, Statistics and Limit modeling to measure the uncertainty of equipment and facilities (Specificationforradiodisturbanceandimmunitymeasuring apparatusandmethods-Part 4-2. Uncertainties, statisticsandlimitmodeling-Measurementinstru- Mentuncertainty)

3 Terms and definitions

The following terms and definitions as defined in GB/T 4365-2003 apply to this document. For ease of use, the following is repeated Certain terms and definitions in GB/T 4365-2003. 3.1 Absorption clamp measurement method absorbingclampmeasurementmethod; ACMM The measurement method of the disturbance power of the device under test (EUT) is measured by an absorbing clamp device, and the lead of the EUT is embedded in the absorbing clamp during the measurement. 3.2 Absorbent clamp test site absorbingclamptestsite; ACTS The test site for disturbance power measurement can be effectively implemented using the Absorbing Clamp Measurement Method (ACMM). 3.3 Measuring aid ancilaryequipment A switching device connected to a measuring receiver or signal generator for the transmission of disturbance signals between the EUT and the measuring or test equipment (eg Such as. current probes, voltage probes and artificial networks). 3.4 Absorption clamp factor clampfactor; CF Fc The ratio of the disturbance power of the EUT to the received voltage at the output of the absorbing clamp. Note. The absorption clamp factor is the conversion factor of the absorption clamp. 3.5 Absorber clamp reference point clampreferencepoint; CRP Absorber external marking associated with the longitudinal position of the front end of the current transformer in the absorbing clamp for calibration of the absorbing clamp during testing horizontal position. 3.6 Coaxial cable coaxialcable a cable containing one or more coaxial cables, typically used for the matching of auxiliary equipment to measuring equipment or (test) signal generators, Provides a specified characteristic impedance and the maximum allowable cable transfer impedance. 3.7 Common mode (asymmetric) disturbance voltage commonmode(asymmetrical) disturbancevoltage When the cable is a double wire, it is the RF voltage between the grounding intermediate point and the reference ground; when the cable is bundled, it is at the end of the specified The effective RF disturbance voltage of the entire beam relative to the reference ground measured by the current clamp (current transformer) under the condition of the terminal impedance (asymmetric electricity) Pressed vector and). [GB/T 4365-2003, definition 161-04-09, modified]. 3.8 Common mode current commonmodecurrent Specifies the sum of the current vectors on two or more wires through which the Geometry cross section passes. 3.9 Continuous harassment of continuousdisturbance A radio frequency disturbance that exhibits a duration of more than.200 ms at the IF output of the receiver, which enables operation in a quasi-peak detection mode The deflection produced by the measuring receiver head does not decrease immediately. [GB/T 4365-2003, definition 161-02-11, modified] 3.10 Intermittent harassment discontinuousdisturbance For countable clicks, the disturbance at the IF output of the measuring receiver is less than.200ms, which makes the work The receiver head of the quasi-peak detection method produces a brief deflection. Note. For impulse pulse disturbance, see GB/T 4365-2003, 161-02-08. 3.11 (electromagnetic) emission (electromagnetic) The phenomenon of electromagnetic energy emitted from the source. [GB/T 4365-2003, definition 161-01-08] 3.12 (harassment source) emission limit emissionlimit(fromadisturbingsource) The maximum emission level of the specified electromagnetic disturbance source. [GB/T 4365-2003, definition 161-03-12] 3.13 Test equipment equipmentundertest; EUT Equipment (apparatus, appliance, and system) that is subject to electromagnetic compatibility (EMC) compliance testing. 3.14 Test line leadundertest; LUT A lead that is connected to the EUT and subjected to an emission or immunity test. Note. Typically, the EUT is connected to a power source or other network or to an auxiliary device by one or more leads. These leads are usually cables, such as power cables, Coaxial cable, data bus cable, etc. 3.15 Measurement measurement The process of obtaining one or more magnitudes and assigning them reasonably through experiments. [ISO /IEC Guide 99.2007, Definition 2.1] 3.16 Measurement, sweep and scan time 3.16.1 Measuring time measurementtime Tm The continuous time (some areas also known as dwell time) that make the measurement of a single frequency point effective. --- For the peak detector, the effective time at which the signal envelope maximum is detected; --- For the quasi-peak detector, the effective time of the weighted envelope maximum is measured; --- For the average detector, determine the effective time of the signal envelope average; --- For the rms detector, determine the effective time of the signal envelope rms. 3.16.2 Observation time observationtime To In the case of multiple scans, the sum of the time Tm is measured at a certain frequency point. If n is the number of scans or sweeps, then To = n × Tm. 3.16.3 Sweep scan The frequency within a given frequency span varies continuously or stepwise. 3.16.4 Span span Δf The difference between the scan or sweep start and stop frequencies. 3.16.5 Scan sweep Continuous frequency variation over a given frequency span. 3.16.6 Scan rate sweeprate Sweep rate scanrate The scan or sweep span divided by the time of the sweep or sweep. 3.16.7 Scan time sweeptime Sweep time scantime Ts The time from one start to the end of a scan or sweep. 3.16.8 Total observation time totalobservationtime Ttot The effective time of spectrum observation (single or multiple scans). If c is the number of frequency bands scanned or scanned, then Ttot = c × n × Tm. 3.17 Measuring receiver measuringreceiver Measuring instruments with or without preselectors that meet the requirements of GB/T 6113.101-2016, for example, tuning voltmeters, EMI reception Machine, spectrum analyzer or measurement device based on Fast Fourier Transform (FFT). Note. For more detailed information, see Appendix I of GB/T 6113.101-2016. 3.18 Number of scans per unit time (for example. per second) numberofsweepspertimeunit(egpersecond) Ns The reciprocal of the sum of the single scan time and the return time, ie 1/(scan time return time). 3.19 Product (class) EMC standard productpublication A standard established for EMC's specific requirements for products or product categories. 3.20 Slide reference point slidereferencepoint; SRP An end of the absorption clamp slide, the position of the EUT, which is used in the measurement procedure to determine the EUT to the absorption clamp reference point The horizontal distance between (CRP). 3.21 Test test Technical operation to determine one or more characteristics of a product, process, or service in accordance with a prescribed procedure. Note. Testing is the measurement or classification of a product's characteristics or properties under a range of environmental and operating conditions and/or requirements. [IEC 60050-151.2001,151-16-13][5] 3.22 Test layout testconfiguration The EUT measurement arrangement specified for measuring the emission level. 3.23 Weighting (eg, for impulse harassment) weighting (ofe.g.impulsivedisturbance) Converting the peak detection impulse pulse voltage level to an indication related to the pulse repetition rate (PRF) (in most cases decreasing), To correspond to the impact of interference on radio reception. Note 1. For analog receivers, the measurement results reflect a subjective assessment of the degree of psychological aversion (discomfort) in human psychology (auditory or visual, right The degree of misunderstanding of the content expressed cannot usually be measured by a certain value). Note 2. For digital receivers, the effect of the interference presented is an objective quantity, which can be specified as a critical bit error rate (BER) or ratio. Special error probability (BEP) (even if there is perfect error correction capability, error occurs) or choose a reproducible object that reflects objective evaluation. Rationality. 3.23.1 Weighted disturbance measurement weighteddisturbancemeasurement Harassment measurements using a weighted detector. 3.23.2 Weighted characteristic weightingcharacteristic Peak voltage level as a function of pulse repetition rate with a constant influence on a particular radio communication system, ie harassment through radio The communication system itself is weighted. 3.23.3 Weighted detector weightingdetector A detector with a contracted weighting function. 3.23.4 Weighting factor The value of the weighting function relative to the reference pulse repetition rate or relative to the peak. Note. The weighting factor is expressed in decibels (dB). 3.23.5 Weighting function weightingfunction Weighted curve weightingcurve When the measurement receiver with the weighted detector indicates that the (output) level is constant, its input peak voltage level and pulse repetition rate The relationship is measured by the receiver's response to repeated pulses.

4 Types of harassment being tested

4.1 Overview This chapter gives a breakdown of the various types of disturbances and the various detectors that are suitable for measuring them. 4.2 Types of harassment Due to physical and physiological psychological reasons, according to the distribution of disturbance spectrum, measurement reception when measuring and assessing radio disturbances The harassment can be divided into the following three categories. machine bandwidth, duration of harassment, incidence, and the extent of harassment. a) Narrowband continuous disturbance. A discrete frequency of disturbance, such as the basis of engineering, medical, and medical (ISM) equipment that uses RF energy. The wave and its harmonics, which form the spectrum, are just a few individual lines whose spacing is greater than the bandwidth of the measuring receiver. So In the measurement, contrary to b) below, only one line falls within the bandwidth. b) Wideband continuous disturbance. Harassment usually caused by repeated pulses of a motor such as a commutator. Their repetition frequency is lower than the test The bandwidth of the receiver is such that more than one line falls within the bandwidth in the measurement. c) broadband intermittent harassment. disturbances caused by mechanical or electronic switching processes, for example, with repetition rates below 1 Hz (small click rate) Harassment generated by a temperature autoregulator or program controller at 30/min). For some isolated (single) pulses, the spectrum of b) and c) has the characteristics of a continuous spectrum, which has a discontinuous spectrum for repetitive pulses. specialty. The two spectrums of b) and c) are characterized by a wider frequency range than the measurement receiver specified in GB/T 6113.101-2016 Bandwidth. 4.3 The function of the detector Depending on the type of disturbance, a measurement receiver with the following detectors can be used for the measurement. a) Average detector. usually used for narrowband disturbance and narrowband signal measurement, especially for narrowband disturbance and broadband disturbance Identification b) Quasi-peak detectors. Weighted measurements for broadband disturbances to assess the effects of auditory disturbances on radio listeners, but can also be used Measurement of narrowband disturbances; c) rms-average detector. weighted measurements for broadband disturbances to evaluate impulse harassment for digital radio communications Business impact, but can also be used for narrowband disturbance measurements; d) Peak detector. Can be used for measurements of broadband disturbances and narrowband disturbances. GB/T 6113.101-2016 specifies the requirements for measuring receivers with these detectors.

5 Connection of measuring equipment

5.1 Overview This chapter describes how to connect measurement equipment, measurement receivers, and measurement aids. 5.2 Connection of measuring auxiliary equipment A shielded cable connection is applied between the measurement receiver and the measurement aid (absorber), and its characteristic impedance should be the same as that of the measurement receiver. The input impedance matches.

6 General requirements and conditions for measurement

6.1 Overview Radio disturbance measurements should. a) reproducible, for example, independent of measurement location, environmental conditions, and especially environmental noise; b) No interaction, for example, the connection between the EUT and the measuring device should not affect the function of the EUT or the measuring device Accuracy. To meet the above requirements, please refer to the following conditions. --- There must be sufficient signal-to-noise ratio at the level of the required measurement, such as the level associated with the disturbance limit; --- Clearly defined the measuring device, the operating conditions of the EUT and the terminal connection. 6.2 Non-EUT harassment 6.2.1 Overview Regarding the signal-to-noise ratio of environmental noise, the measurement should meet the following requirements. If the ambient noise level exceeds the required environmental level, it should be Recorded in the test report. 6.2.2 Compliance test The test site should be able to distinguish the various EUT emissions from ambient noise, and the ambient level is preferably lower than the level to be measured. 20dB, but at least 6dB lower. For the 6dB case, the measured EUT disturbance level is higher than the actual (possibly up to 3.5dB). can The site suitability of the required environment is determined by placing the EUT in place and not energizing, measuring the ambient level. When the compliance measurement is made based on the limit, as long as the result of the combination of the ambient level and the disturbance source emission level does not exceed the specified limit, the environment The level allows the above 6dB requirement not to be met. In this case, the EUT is considered to meet the limit requirements. Other approaches can also be taken, For example, the bandwidth can be reduced for narrowband signals. 6.3 Measurement of continuous disturbance 6.3.1 Narrowband continuous disturbance The measuring equipment should remain tuned at the discrete frequency points to be investigated and retuned if the frequency fluctuates. 6.3.2 Broadband continuous harassment In order to evaluate broadband unstable disturbances with unstable levels, the largest reproducible measurements should be found. See 6.5.1 for further details. 6.3.3 Application of spectrum analyzers and frequency sweep receivers Spectrum analyzers and swept receivers can also be used for disturbance measurements, especially to reduce measurement time. However, for some of these instruments These characteristics should be given special considerations, including overload, linearity, sel...

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