EMC measurements for aerospace and military applications

Goals

The objectives of the training 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