EMC measurements for aerospace and military applications

Goals

formation-objectifs-seointro EMC measurements for aerospace and military applications :

- 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

2/ Principles of analysers and receivers

Representation of a signal

Superheterodyne spectrum analyser

FFT spectrum analyser

Real-time spectrum analyser

Standardised resolution filters for aerospace, military and civilian applications

Measurement error related to the VSWR of the measurement chain

3/ Specifications and commissioning of tests

EMC test plan

Organisation of immunity tests

Aero & Military test setup

EMC test programme



4/ Émission conducted in the air & military environment

Classification of equipment according to CISPR

RSIL Air & Military

Difference between the 2 types of RSIL

Measurements at RSIL

Current clamps

Section 21 : Conducted RF emissions

CE 101 / CE 101 / CE 106: Conducted emissions

Examples of conducted emission limits for aerospace and military applications



5/ Radiated emissions for aerospace and Military

Émission in radiation

Antennas used in EMC

Antenna factor and antenna gain

Faraday cages and absorbent materials

Radiated emission CRBM method

Section 15: Magnetic radiated emission

Section 21: RF radiated emissions

RE 101 / RE 102 / RE 103: Radiated emissions

Example of emission limits for aerospace & military radiation Military



6/ Conducted immunity for aerospace and military applications

Section 16: Power input

Section 17: Voltage peaks

Section 18: Susceptibility to conducted audio frequencies

Section 19: Susceptibility to induced signals

Section 20: Susceptibility to conducted RF (BCI)

CS 101 / CS 106 / CS 109: Susceptibility on power supplies and ground planes

CS 103 / CS 104 / CS 105: Susceptibility on the antenna port

CS 114: Conducted RF susceptibility (BCI)

CS 115: Susceptibility to impulse waves

CS 116: Susceptibility to damped oscillatory waves



7/ Radiation immunity

Radiation immunity

Section 20: Radiated RF susceptibility

Immunity to strong fields (CRBM)

RS 101 / RS 103 / RS 105: Susceptibility to EM fields

8/ Immunity to lightning waves

DO 160: Lightning-induced waveforms

Aeronautical waves: Multiple Stroke / Multiple Burst

Section 22: Injection on the beam

Section 22: Pin injection

Section 23: Direct injection

Characteristics of lightning current components A/B/C/D

9/ Regulatory developments

DO 160: comparison of versions

MIL STD 461: comparison of versions



8/ Conclusion

Summary of EMC measurements

EMC abbreviations

Bibliography