IEC 61000-4-31:2016 relates to the conducted immunity of electrical and electronic equipment to electromagnetic disturbances coming from intended and\/or unintended broadband signal sources in the frequency range 150 kHz up to 80 MHz. It has the status of a basic EMC publication in accordance with IEC Guide 107.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 6<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 1 Scope and object 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 4 General <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 5 Test levels Figures Figure 1 \u2013 Immunity test to broadband conducted disturbances <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | Tables Table 1 \u2013 Test levels <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 6 Test equipment and level setting procedures 6.1 Test generator Figure 2 \u2013 Example of voltage spectrum of a broadband test signal measured with a 120\u00a0kHz resolution bandwidth <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 6.2 Coupling and decoupling devices 6.2.1 General Figure 3 \u2013 Principle of the test generator Table 2 \u2013 Characteristics of the test generator <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 6.2.2 CDND for the port under test 6.2.3 Coupling\/decoupling networks (CDNs) for cables that are not under test Figure 4 \u2013 Example of simplified diagram for the circuit of CDND Table 3 \u2013 Specification of the main parameters of the CDND for current \u2264 16 A <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Figure 5 \u2013 Example of coupling and decoupling network for power ports other than AC mains Table 4 \u2013 Usage of CDNs <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 6.3 Verification of the test systems 6.3.1 General 6.3.2 Verification procedure of test generator flatness <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 6.3.3 Verification procedure of the insertion loss of the CDND using transformer jigs Figure 6 \u2013 Test set-up regarding test generator flatness and typical test signal Figure 7 \u2013 Typical circuit diagram of the transformer jig showing 50 \u03a9 side and 100 \u03a9 side of the transformer and 2 pcs 0,1 \u03bcF coupling capacitors <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 6.3.4 Insertion loss of the injection coupling system Figure 8 \u2013 Transformer jig specifications Figure 9 \u2013 Example of the set-up geometry to verify the insertion loss of the injection coupling system <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 6.4 Test level setting procedure 6.4.1 General 6.4.2 Setting of the output level at the EUT port of the CDND Figure 10 \u2013 Set-up for the evaluation of the total insertion loss of the injection coupling system <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 7 Test set-up and injection methods 7.1 Test set-up 7.2 EUT comprised of a single unit Figure 11 \u2013 Set-up for level setting <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 7.3 EUT comprised of several units Figure 12 \u2013 Example of test set-up for an EUT comprised of a single unit (top view) <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Figure 13 \u2013 Example of a test set-up for an EUT comprised of several units (top view) <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 7.4 CDN and CDND termination application <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | 8 Test procedure Figure 14 \u2013 Immunity test to a 2-port EUT (when only CDNDs can be used) <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 9 Evaluation of the test results 10 Test report <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | Annex A (informative) Measurement uncertainty of the power spectral density test level A.1 General A.2 Uncertainty budgets for test methods A.2.1 General symbols A.2.2 Definition of the measurand A.2.3 MU contributors of the measurand <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | A.2.4 Input quantities and calculation examples for expanded uncertainty Figure A.1 \u2013 Example of influences upon the power spectral density test level using a CDND <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | A.3 Expression of the calculated measurement uncertainty and its application Table A.1 \u2013 CDND level setting process <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | Annex B (informative) Rationale for the selection of the preferred broadband source \u2013 Information on test signal generation B.1 General B.2 Principles of band-limited broadband signal generation B.2.1 General B.2.2 (True) random noise generation <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | B.2.3 Pseudo-random noise sequence Figure B.1 \u2013 White noise source <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | Figure B.2 \u2013 Principle of band-limited broadband signal generation with an arbitrary waveform generator <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | Figure B.3 \u2013 Signal spectrum of a band-limited pseudo-random noise signal (measured with a 120 kHz resolution bandwidth) <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | Figure B.4 \u2013 Extract of the band-limited pseudo noise signalin time domain (measured with an oscilloscope) Figure B.5 \u2013 Signal spectrum of the band-limited pseudo noise signal without an anti-alias filter <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | B.2.4 Impulse Figure B.6 \u2013 Extract of the signal spectrum of a band-limitedpseudo noise signal (measured with a 200\u00a0Hz resolution bandwidth) <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | Figure B.7 \u2013 Signal spectrum of a band-limited impulse signal (measured with a 120\u00a0kHz resolution bandwidth) Figure B.8 \u2013 Extract of the band-limited impulse signal in time domain (measured with an oscilloscope) <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | B.2.5 OFDM scheme Figure B.9 \u2013 Extract of the signal spectrum of a band-limited impulse signal (measured with a 200\u00a0Hz resolution bandwidth) <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | Figure B.10 \u2013 Signal spectrum of an OFDM signal (measured with a 120\u00a0kHz resolution bandwidth) Figure B.11 \u2013 Extract of the signal spectrum of an OFDM signal (measured with a 200\u00a0Hz resolution bandwidth) <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | B.3 Selection of the preferred broadband source Figure B.12 \u2013 Signal spectrum of an OFDM signal with an amplitude step at 30\u00a0MHz (measured with a 120\u00a0kHz resolution bandwidth) Table B.1 \u2013 Comparison of white noise signal generation methods <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Electromagnetic compatibility (EMC) – Testing and measurement techniques. AC mains ports broadband conducted disturbance immunity test<\/b><\/p>\n |