CISPR 16-2-3-2016 Specification for radio disturbance and immunity measuring apparatus and methods - Part 2-3 Methods of measurement of disturbances and immunity - Radiated disturb.pdf

1、 Specification for radio disturbance and immunity measuring apparatus and methods Part 2-3: Methods of measurement of disturbances and immunity Radiated disturbance measurements Spcifications des mthodes et des appareils de mesure des perturbations radiolectriques et de limmunit aux perturbations ra

2、diolectriques Partie 2-3: Mthodes de mesure des perturbations et de limmunit Mesurages des perturbations rayonnes CISPR 16-2-3 Edition 4.0 2016-09 INTERNATIONAL STANDARD NORME INTERNATIONALE CISPR 16-2-3:2016-09(en-fr) INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE COMIT INTERNATIONAL SPCIAL

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22、 distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. Specification for radio disturbance and immunity measuring apparatus and methods Part 2-3: Methods of measurement of disturbances and immunity Radiated disturbance measurements Spcification

23、s des mthodes et des appareils de mesure des perturbations radiolectriques et de limmunit aux perturbations radiolectriques Partie 2-3: Mthodes de mesure des perturbations et de limmunit Mesurages des perturbations rayonnes INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE COMIT INTERNATIONAL SP

24、CIAL DES PERTURBATIONS RADIOLECTRIQUES BASIC EMC PUBLICATION PUBLICATION FONDAMENTALE EN CEM colourinside 2 CISPR 16-2-3:2016 IEC 2016 CONTENTS FOREWORD. 7 1 Scope 9 2 Normative references 9 3 Terms, definitions and abbreviations 10 3.1 Terms and definitions 10 3.2 Abbreviated terms . 15 4 Types of

25、disturbance to be measured . 16 4.1 General . 16 4.2 Types of disturbance . 16 4.3 Detector functions . 16 5 Connection of measuring equipment 16 6 General measurement requirements and conditions 17 6.1 General . 17 6.2 Disturbance not produced by the equipment under test 17 6.2.1 General 17 6.2.2 C

26、ompliance (conformity assessment) testing . 17 6.3 Measurement of continuous disturbance 17 6.3.1 Narrowband continuous disturbance . 17 6.3.2 Broadband continuous disturbance . 17 6.3.3 Use of spectrum analyzers and scanning receivers . 17 6.4 EUT arrangement and measurement conditions . 18 6.4.1 G

27、eneral arrangement of the EUT 18 6.4.2 Operation of the EUT . 20 6.4.3 EUT time of operation 20 6.4.4 EUT running-in time . 21 6.4.5 EUT supply 21 6.4.6 EUT mode of operation . 21 6.4.7 Operation of multifunction equipment 21 6.4.8 Determination of arrangement(s) causing maximum emissions 21 6.4.9 R

28、ecording of measurements . 21 6.5 Interpretation of measuring results 22 6.5.1 Continuous disturbance 22 6.5.2 Discontinuous disturbance 22 6.5.3 Measurement of the duration of disturbance 22 6.6 Measurement times and scan rates for continuous disturbance 22 6.6.1 General 22 6.6.2 Minimum measuremen

29、t times . 23 6.6.3 Scan rates for scanning receivers and spectrum analyzers 23 6.6.4 Scan times for stepping receivers . 24 6.6.5 Strategies for obtaining a spectrum overview using the peak detector 25 6.6.6 Timing considerations using FFT-based instruments . 29 7 Measurement of radiated disturbance

30、s . 32 7.1 Introductory remarks . 32 7.2 Loop-antenna system measurements (9 kHz to 30 MHz) 33 7.2.1 General 33 7.2.2 General measurement method 33 CISPR 16-2-3:2016 IEC 2016 3 7.2.3 Test environment . 34 7.2.4 Configuration of the equipment under test . 35 7.2.5 Measurement uncertainty for LAS . 35

31、 7.3 Open-area test site or semi-anechoic chamber measurements (30 MHz to 1 GHz) 35 7.3.1 Measurand . 35 7.3.2 Test site requirements 38 7.3.3 General measurement method 38 7.3.4 Measurement distance . 39 7.3.5 Antenna height variation . 40 7.3.6 Product specification details . 40 7.3.7 Measurement

32、instrumentation . 42 7.3.8 Field-strength measurements on other outdoor sites . 42 7.3.9 Measurement uncertainty for OATS and SAC 42 7.4 Fully-anechoic room measurements (30 MHz to 1 GHz) . 42 7.4.1 Test set-up and site geometry 42 7.4.2 EUT position 45 7.4.3 Cable layout and termination 46 7.4.4 Me

33、asurement uncertainty for FAR . 47 7.5 Radiated emission measurement method (30 MHz to 1 GHz) and radiated immunity test method (80 MHz to 1 GHz) with common test set-up in semi-anechoic chamber . 47 7.5.1 Applicability . 47 7.5.2 EUT perimeter definition and antenna-to-EUT separation distance 47 7.

34、5.3 Uniform test volume . 48 7.5.4 Specifications for EUT set-up in common emissions/immunity test set-up 49 7.5.5 Measurement uncertainty for common emission/immunity set-up and method 55 7.6 Fully-anechoic room and absorber-lined OATS/SAC measurements (1 GHz to 18 GHz) 55 7.6.1 Quantity to measure

35、 . 55 7.6.2 Measurement distance . 55 7.6.3 Set-up and operating conditions of the equipment under test (EUT) . 56 7.6.4 Measurement site . 56 7.6.5 Measurement instrumentation . 56 7.6.6 Measurement procedure . 57 7.6.7 Measurement uncertainty for FAR . 63 7.7 In situ measurements (9 kHz to 18 GHz)

36、 64 7.7.1 Applicability of and preparation for in situ measurements 64 7.7.2 Field-strength measurements in situ in the frequency range 9 kHz to 30 MHz 65 7.7.3 Field-strength measurements in situ in the frequency range above 30 MHz 65 7.7.4 In situ measurement of the disturbance effective radiated

37、power using the substitution method 66 7.7.5 Documentation of the measurement results . 70 7.7.6 Measurement uncertainty for in situ method 70 7.8 Substitution measurements (30 MHz to 18 GHz) 70 7.8.1 General 70 7.8.2 Test site . 71 4 CISPR 16-2-3:2016 IEC 2016 7.8.3 Test antennas 71 7.8.4 EUT confi

38、guration 72 7.8.5 Test procedure . 72 7.8.6 Measurement uncertainty for substitution method 72 7.9 Reverberation chamber measurements (80 MHz to 18 GHz) . 72 7.10 TEM waveguide measurements (30 MHz to 18 GHz) 72 8 Automated measurement of emissions . 72 8.1 Introduction Precautions for automated mea

39、surements . 72 8.2 Generic measurement procedure . 73 8.3 Pre-scan measurements 73 8.3.1 General 73 8.3.2 Determination of the required measurement time 74 8.3.3 Pre-scan requirements for different types of measurements 74 8.4 Data reduction 75 8.5 Emission maximization and final measurement 76 8.6

40、Post-processing and reporting . 77 8.7 Emission measurement strategies with FFT-based measuring instruments . 77 Annex A (informative) Measurement of disturbances in the presence of ambient emissions . 78 A.1 General . 78 A.2 Terms and definitions 78 A.3 Problem description 78 A.4 Proposed solution

41、. 78 A.4.1 Overview 78 A.4.2 Pre-testing the EUT in a shielded room . 81 A.4.3 Method of measurement of EUT disturbances in the presence of narrowband ambient emissions . 82 A.4.4 Method of measurement of EUT disturbance in the presence of broadband ambient emissions 85 A.5 Determination of the EUT

42、disturbance in case of superposition 87 Annex B (informative) Use of spectrum analyzers and scanning receivers . 92 B.1 General . 92 B.2 Overload . 92 B.3 Linearity test . 92 B.4 Selectivity . 92 B.5 Normal response to pulses 92 B.6 Peak detection 92 B.7 Frequency scan rate 93 B.8 Signal interceptio

43、n 93 B.9 Average detection . 93 B.10 Sensitivity . 93 B.11 Amplitude accuracy . 94 Annex C (informative) Scan rates and measurement times for use with the average detector 95 C.1 Purpose 95 C.2 Suppression of disturbances 95 C.2.1 Suppression of impulsive disturbance . 95 C.2.2 Suppression of impuls

44、ive disturbance by digital averaging 96 C.2.3 Suppression of amplitude modulation 96 CISPR 16-2-3:2016 IEC 2016 5 C.3 Measurement of slowly intermittent, unsteady or drifting narrowband disturbances . 96 C.4 Recommended procedure for automated or semi-automated measurements . 98 Annex D (informative

45、) Explanation of the APD measurement method applying to the compliance test 99 Annex E (normative) Determination of suitability of spectrum analyzers for compliance tests . 101 Bibliography . 102 Figure 1 Measurement of a combination of a CW signal (NB) and an impulsive signal (BB) using multiple sw

46、eeps with maximum hold . 26 Figure 2 Example of a timing analysis 27 Figure 3 A broadband spectrum measured with a stepped receiver . 28 Figure 4 Intermittent narrowband disturbances measured using fast short repetitive sweeps with maximum hold function to obtain an overview of the emission spectrum

47、 . 29 Figure 5 FFT scan in segments 31 Figure 6 Frequency resolution enhanced by FFT-based measuring instrument 32 Figure 7 Concept of magnetic field induced current measurements made with the loop antenna system . 34 Figure 8 Measurement distance . 36 Figure 9 Separation distance relative to the ph

48、ase centre of an LPDA antenna 38 Figure 10 Concept of electric field strength measurements made on an open-area test site (OATS) or semi-anechoic chamber (SAC) showing the direct and reflected rays arriving at the receiving antenna 39 Figure 11 Position of CMAD for table-top equipment on OATS or in

49、SAC 42 Figure 12 Typical FAR site geometry, where a, b, c, e depend upon the room performance . 43 Figure 13 Typical test set-up for table-top equipment within the test volume of a FAR . 44 Figure 14 Typical test set-up for floor-standing equipment within the test volume of a FAR . 45 Figure 15 Positions of reference planes for uniform field calibration (top-view) 48 Figure 16 Test set-up for table-top equipm