Electromagnetic interference (EMI) and electromagnetic compatibility (EMC) are often used interchangeably when referring to the regulatory testing of electronic components and consumer goods.
But while related, they aren’t the same.
Tonex EMI/EMC Courses
|EMC/EMI Training for Aerospace||3 days|
|Performance and EMC Testing Training for Military & Aerospace||3 days|
|MIL STD 461F Training||3 days|
EMI is electromagnetic energy which affects the functioning of an electronic device. Sources of EMI can sometimes be naturally occurring environmental events, such as electrical storms and solar radiation. However, more commonly, the EMI source is another electronic device or electrical system.
EMI can be generated from any electronic device. That said, certain equipment and components – such as cellphones, welders, motors and LED screens – are more likely to create disturbances than others.
Because it is rare for electronics to operate in isolation, products are generally engineered to function in the presence of some amount of EMI. This is particularly important in military-grade and avionics equipment, as well as devices requiring superior reliability in all situations.
EMC on the other hand is a measure of a device’s ability to operate as intended in its shared operating environment while, at the same time, not affecting the ability of other equipment within the same environment to operate as intended.
Evaluating how a device will react when exposed to electromagnetic energy is one component of this, known as immunity (or susceptibility) testing. Measuring the amount of EMI generated by the device’s internal electrical systems – a process known as emissions testing – is another.
Both aspects of EMC are important design and engineering considerations in any system. Failing to properly anticipate the EMC of a device can have a number of negative consequences, including safety risks, product failure and data loss.
Consequently, a wide range of testing equipment for EMC and EMI has been developed to give engineers a clearer picture of how a device will operate in real-world conditions.
The Federal Communications Commission (FCC) defines limits for the amount of unlicensed radio frequency interference that can be produced by consumer electronics and other devices. The FCC does this in FCC Part 15 rules.
Other regulations such as MIL-STD 461 and MIL-STD 464 outline EMC and environmental requirements for components/subsystems and systems for military applications.
Outside of the U.S., various ISO, IEC, CISPR and other standards define acceptable limits of EMI and overall EMC. In some industries and markets, compliance with these standards is voluntary. In others, it is a requirement.
EMI/EMC Training Courses by Tonex
EMC/EMI Training Courses by Tonex, Applied Electromagnetic Compatibility (EMC) and Electromagnetic Interference (EMI) training course serves as a technical program to electromagnetic compatibility (EMC) and electromagnetic interference (EMI). It is a technical overview of many topics.
Tonex Applied EMC/EMI course is applicable to professional engineers and technicians practicing in EMC fields to include bonding, grounding, shielding, EMI prediction, EMI analysis, conducted and radiated interference, lightning protection and more.
Learn about the requirements that commercial and military electronic systems must meet to get certified. Master techniques that can be used to protect systems against these threats. Explore unconventional high power EM threats, including nuclear electromagnetic pulse and high power microwave weapons (optional topics).
In a nutshell, Engineers know the math and the physics of EMC. Technicians know the instruments and test setups. Engineers need good writing and verbal skills. Technicians need to know the pitfalls of real measurements. All applicants have to be competent in the fundamentals, i.e., coupling, filters, shielding, etc. as well as the specifications which apply to their particular specialty.
Who Should Attend
- Engineers and system architects
- EMC/EMI specialists (engineers and technicians)
- PCB layout professionals
- IC designers
- Applications Engineers
- Engineering and project Managers
- Understand EMI/EMC Concepts, Definitions, and Requirements
- Understand military and commercial EMI/EMC requirements
- Explore EMC Methodology, Environments, and Measurements
- Calculate electromagnetic propagation
- Understand EMC Modeling and Analysis
- Master EMC measurement, modeling, and analysis techniques
- Analyze EM Propagation and Crosstalk
- Understand EM Hardening Techniques
- Master Unconventional High Power Electromagnetic Threats
- Analyze potential EMI problems by identifying the source, the receptor, and the coupling path
- Harden electronic systems using the appropriate EMC protection technique(s): grounding, bonding, shielding, filtering, and printed circuit board design
INTRODUCTION TO EMI AND EMC
- What is EMI and EMC?
- Lightning Protection and Control
- Power Grounds
- Signal Grounding
- Cable and Connector Grounding
- Box and System-Level Grounding
- Shielding Effectiveness
- Shielding Materials and Coatings
TECHNICAL PRINCIPLES OF EMI AND EMC
- Principles of Electromagnetic Interference (EMI)
- Principles of Electromagnetic Compatibility (EMC)
- Electromagnetic Interference (EMI)
- Radio Frequency Interference (RFI)
- Electromagnetic Effects (EME)
- Electromagnetic Pulse (EMP)
- Aperture Leakage and Their Control
- Shielded Windows
- Electrical Gaskets
- Box and Housing Shield Designs
- Architectural Shielding
- Shielded Rooms
- Cable Shielding and Performance
- EMI and Control Issues
- Fields Levels, Meaning and Threats
- Electrical Noise Sources
- Analog Devices and Logic Victims and Their EMI Properties
- EMI Device Reciprocity
- Threat and Victim Levels and Margins
EMI AND EMC STANDARDS AND MEASUREMENTS
- Introduction to field strength
- Safety considerations
- EMC standards
- EMI Standards
- RF Emissions
- Low Frequency Emissions: Harmonics (IEC 1000-3-2)
- Measurement Equipment
- Types of Grounds
- Signal Grounds
- Single-point and Multi-point Grounds
- Common Impedance Coupling
- Separation of Grounds
- Ground Loops
- Shield Grounding
- Grounding and Interconnect
- Function of a Ground
- Single Point, Multi-Point and Hybrid Grounds
- Analog vs Digital Grounds
- Circuit Board Grounding
- Internal Cables and Connectors
- I/O Treatments
- Picking the Right Materials
- Enclosure Design Techniques
PHYSICS OF EMI/EMC INTERFERENCE SOURCES, PATHS AND RECEPTORS
- Key EMC/EMI Design Threats
- EMI Regulations and Their Impact on Design
- Physics of EMC/EMI
- Frequency, Time and Dimensions
- Transmission Lines and “Hidden” Antennas
- Immunity tests
- Design Principles
- Interference coupling mechanisms
- Layout and grounding
- Digital and analogue circuit design
- Interfaces, filtering and shielding
- EMC management
- Interface Control
- Conducted Interference
- Radiated Interference
- Military Specifications/Standards/Handbooks
- EMC Test Plans
- Test Equipment
- Test Facilities
- Safety Terminology
- Mathematic Spectrum Analysis
- Lightning Protection
- Inter-system and Intra-system Design
- Equipment Design
- EMI Prediction
- EMI Analysis
- Field Theory
- Filter Theory
- EMC/EMI Modeling and Analyzing
- EMC/EMI Simulation and Validation
- Levels of model validation
- Mathematical level
- Computational technique validation
- Implementation level
- Individual software code implementation validation
- Model level
- Specific model validation
- Electromagnetic Spectrum Modeling
- Electromagnetic and Spectrum related models and simulation programs
- Electromagnetic Data Acquisition Management