Civil EMC measures

Goals

The objectives of the training 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 61000-4-6IEC 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