EMC Testing

These complex measurements and procedures require specialised instrumentation and knowledge. We have a considerable degree of experience in EMC compliance.

The EMC Directive differs from other European CE Marking Directives in that the primary goal is the functionality of the equipment & protection of the electromagnetic spectrum from interference rather than overall product safety.

Nearly all finished electrical products must comply with the EMC Directive – regardless of how they are powered. There are however a few exceptions to the rules – sub-assemblies or components with no intrinsic function of themselves, products covered by other Directives, and prototypes.

The Directive stipulates that the product tested must not emit unwanted electromagnetic interference and must be immune to a normal level of interference. Compliance is usually demonstrated by testing to a harmonized standard, but testing is not mandatory & a manufacturer may choose to provide a technical rationale for compliance as an alternative.

The Directive is enforced within the UK by National Trading Standards & Ofcom. The penalties for non-complaince can include 3 months imprisonment & a £5000 fine, however an infraction generally involves a full recall & replacement of any affected product.

EMC Emissions

We measure the amount of electromagnetic energy emanating from your product. This energy can be emitted from the unit itself, from the power supply cable or any signal cables that may be attached in normal operation.

EMC Immunity

The purpose of EMC immunity testing is to ensure that the product will function correctly in the presence of electromagnetic interference (EMI).
The product will be sunjected to a wide range of different types of EMI and the behaviour of the product will be monitored to confirm continued operation as intended.