Feature: T&M
To comply with market requirements and avoid costly recalls, manufacturers must ensure that electromagnetic disturbances do not interfere with other users or with the function of their products
Te world is now wireless, with nearly every electronic or
electrical device having integrated RF modules – from domestic and industrial machinery to wearable devices. We are seeing product evolution across the board as everything is becoming wireless enabled. However, that product evolution introduces complexity into electromagnetic compatibility (EMC) testing. EMC testing measures the ability of equipment or systems
to function satisfactorily in their electromagnetic environment without introducing intolerable electromagnetic disturbance in that environment. EMC compliance is a mandatory requirement in most markets, including Europe, the US, China, Korea, Australia and New Zealand. In the European Union, the vast majority of finished electronic
Successful EMC testing through automation
By Nicholas Forsyth, Senior Engineer, TÜV SÜD
T
he 1970s were the decade of automation, with computers and electronics being introduced into many products. Since then, the advent of Industry 4.0 has seen
the growth of networked industrial systems, cyber physical systems and the IoT. Industry 4.0’s
design principles include interoperability and interconnectivity, information transparency and decentralised, autonomous and real-time decisions, among others. Likewise, consumer products have evolved from autonomous and standalone to networked products that harness the IoT.
28 June 2023
www.electronicsworld.co.uk
products – whether battery- or mains-powered – must comply with EMC Directive 2014/30/EU, as well as other relevant directives, before they can carry the CE marking and be sold to the public. In the UK this directive has been replaced by the Electromagnetic Compatibility Regulations 2016 that require products be compliant before they can carry the UKCA mark. To comply with market requirements and avoid costly recalls, manufacturers in industries such as consumer products, medical devices, industrial machinery, railway, automotive, aerospace and military equipment must ensure that electromagnetic disturbances do not interfere with other users or with the function of their products.
EMC testing EMC testing ensures that products meet regulatory requirements. It also reduces the risk of costly non-compliance and improves product performance by avoiding failures in use, which could require product recalls or cause significant time-to-market delays for new products. As manufacturers are also under pressure to maintain quality, minimising the costs and time associated with EMC testing is vital. Overall, there are six major areas of EMC testing:
• Radiated emissions (RE). • Conducted emissions (CE). • Radiated immunity (RI). • Conducted transient immunity (CTI). • Conducted transient emissions (CTE). • Electrostatic discharge (ESD).
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