Good product design incorporates the application of basic EMC principles such as effective shielding, earthing, and filtering will simultaneously improve electromagnetic immunity and reduce electromagnetic emissions, whilst minimizing risk. The result of this would include product failure during tests and in the real world would mean that the product would be unreliable and not work as intended. If a product has to be redesigned, it can be prohibitively expensive and result in delays to market and a loss in consumer confidence.īad product design (from an EMC or EMI perspective) would be when earthing, filtering, and shielding have not been considered. How to design for EMI & EMC to minimize risk EMC testing guarantees the reliability and interference-free functioning of different electronic devices and systems in a common electromagnetic environment. The standards used are therefore based primarily on radiated and conducted tests. Testing, performed in a laboratory, considers electromagnetic interference (EMI) and electromagnetic susceptiblity (EMS). The two key methods that electromagnetic activity or ‘energy’ can reach a product are through the air (radiative coupling) or via the cabling (conductive coupling). How will the energy travel from the product to its “victim”?.With what/whom is it going to interfere? Electromagnetic compatibility (EMC) is defined bidirectionally, requiring both an acceptable level of emissions by the device and susceptibility to other.Where is this product going to be used?.The device’s intended application will determine the exact type of testing required. In addition, specific industrial or military standards will apply to the product depending on its target market and therefore also need to be considered.Įvaluating how a device will react when exposed to electromagnetic energy is known as susceptibility or immunity testing and involves determining the ability of a device to tolerate noise from external sources.Meanwhile, emissions testing measures the amount of EMI generated by the device that could affect other electrical products and can provide an accurate measurement of the amount and type of noise generated by a device. However, different requirements in the US and the European Union (EU), as well as differing interpretations of the meanings of EMC and EMI, often cause confusion when it comes to testing. Testing requirements, frequency range, setup, as well as the required test equipment will vary by standard and test level. Failing to consider them in the initial stages of product development can result in the time-consuming and costly need to redesign the product at a later stage to meet EMC/EMI specification tests and prevent product failure or safety risk. Conducted radio frequency (RF) testing is a continuous Electromagnetic Compatibility (EMC) test commonly required for commercial, automotive, and military equipment or products. All electronic devices have the potential to emit electromagnetic fields. The contents of the corrigendum of June 2015 have been included in this copy.Electromagnetic compatibility (EMC) and interference (EMI) are both extremely important design considerations. Electromagnetic Compatibility (EMC) and Radio Frequency (RF) Testing Electromagnetic Compatibility, also known as EMC, is the interaction of electrical and electronic equipment with its electromagnetic environment, and with other equipment. and informative Annexes H, I and J which are new. Annex G which now addresses the measurement uncertainty of the voltage test level Annex A which is now dedicated to EM and decoupling clamps reorganization of Clause 7 on test setup and injection methods It includes the following significant technical changes with respect to the previous edition: This fourth edition cancels and replaces the third edition published in 2008 and constitutes a technical revision. Electromagnetic Compatibility testing analyzes the ability of electronic devices to operate as anticipated when in proximity to other electronic devices or in the presence of electromagnetic disturbances that interfere with their intended operation. The test method documented in IEC 6:2013 describes a consistent method to assess the immunity of an equipment or system against a defined phenomenon. The object of this standard is to establish a common reference for evaluating the functional immunity of electrical and electronic equipment when subjected to conducted disturbances induced by RF fields. Equipment not having at least one conducting wire and/or cable (such as mains supply, signal line or earth connection) which can couple the equipment to the disturbing RF fields is excluded from the scope of this publication. IEC 6:2013 relates to the conducted immunity requirements of electrical and electronic equipment to electromagnetic disturbances coming from intended radio-frequency (RF) transmitters in the frequency range 150 kHz up to 80 MHz.
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