The EU Directive

The EMC Directive, issued by the European Commission, is a mandatory requirement in all EU member states. This creates a level playing field across the union. The Directive 89/336/EEC was originally issued in 1992, and updated in 2004 as 2004/108/EC. These are 'New Approach' directives. This means that they simply set down the basic legal requirements and leave all the technical detail to specialist European standards bodies such as CENELEC, ETSI and CEN.

The essential requirements are:

The first Directive offered two routes to compliance for the vast majority of products:

The 2004 version has completely eliminated the TCF route and now requires that each product has an EMC Assessment. This is undertaken, documented and retained by the manufacturer/importer. This EMC assessment should take into account the relevant EMC standards, but the selection of tests, the degree of testing and the nature of the documentation are at the discretion of the manufacturer/importer. The issue of a Declaration of Conformity must have ‘sound technical grounds’ to justify the declaration. The nature of the ‘sound technical grounds’ are at the discretion of the issuer. They may be results obtained from a test lab, results obtained by more or less limited self testing, a technical appraisal or a mixture of two or more of the above. In general, the requirements of the legislation will be deemed to have been satisfied provided that ‘due diligence’ is observed and any decisions/assumptions/interpretations are ‘reasonable’.
In either of the above ‘routes’, a vital initial step is the selection of the appropriate standard. This will define the applicable tests, product configuration and other relevant details. To help chose the right standard, see Standard Selector page.

When considering radiated emissions testing, the most common test technique specified by the standards (both EU and FCC) is the open area test site (OATS) technique. To ensure accuracy and repeatability, this technique relies on the lack of all reflections in the vicinity of the EUT and antenna apart from the ground plane reflection. In reality, due to limited space and limited resources, the vast majority of tests (both pre-compliance and self test/self certification) outside the test labs are done on very non-compliant sites.
These sites suffer from two distinct problems .......

These two factors which must be taken into account if results are to have any integrity. Laplace test kits are unique in their ability to address both of these factors.

Before deciding on any test equipment...check the facts!!