- Civil EMC measures

Goals

formation-objectifs-seointro - Civil EMC measures :

- Implement standardised measures in the aerospace/military field by understanding the methods and difficulties associated with measuring devices, installation and reproducibility

The aim of this training course is to:
- Understand the regulations in force for a system
- Understand the main characteristics of measuring equipment and devices
- Be able to analyse and implement standardised testing methods
- Become familiar with standardised EMC testing methods through demonstrations by the trainer

Program

1/ Introduction - Reminders

Regulatory reminders

Quantities and units

Power and voltage

Decibels

Narrowband/broadband interference

Coupling reciprocity

EMC control plan

Organisation of an EMC laboratory

2/ Principles of analysers and receivers

Representation of a signal Superheterodyne spectrum analyser>FFT spectrum analyser

Real-time spectrum analyser

C.I.S.P.R. meters

Measurement error related to the VSWR of the measurement chain

3/ Conducted emissions

Classification of equipment according to CISPR RSIL Measurements at RSIL Artificial hand Voltage probe

Current clamps and absorbent clamp CISPR clicks

Conducted emission errors Harmonic currents: IEC 61000-3-2

Example of conducted emission limits according to different areas of activity



4/ Radiated emissions

Definition of EM fields

Radiated emissions

Radio spectrum

CISPR site Antennas used in EMC

Antenna factor and antenna gain

Faraday cages and absorbent materials

Free field site, site calibration

Radiated emission errors

Example of radiated emission limits according to different areas of activity



5/ Immunity measurements

IEC 61000-4-X standard

Organisation of immunity tests

Evaluation of test results

Pulse shapes



6/ Conducted immunity

IEC standard 61000-4-2

Example of test setup

Test 61000-4-4

Application of the fast transient test

Test IEC 6100-4-5

61000-4-5: Coupling networks

Test 61000-4-6

IEC 61000-4-6: Implementation

Voltage dips and voltage variations

Damped oscillatory wave

IEC 61000-4-13 standard

Test overview

IEC 61000-4-16 standard

EN 61000-4-16: ImplementationFrequent errors in conducted immunity



7/ Radiated immunity

IEC 61000-4-3 classes

Power amplifiers

Radiated immunity errors



8/ Conclusion

Summary of the various tests

Summary of EMC measurements

Causes of equipment failure

EMC abbreviations

Bibliography