EN 300 328 is one of the most common standards used today in order to demonstrate compliance with Article 3.2 of the R&TTE Directive. It covers Wideband Data Transmission equipments operating in the unlicensed 2.4 GHz ISM band. Products typically covered by this standard include WiFi, Bluetooth and Zigbee devices. So this important standard affects millions of devices employing these commonly used technologies.
Previous versions of the standard up to and including Version 1.7.1 were not particularly difficult to comply with. However, since Version 1.8.1 was published in June 2012 it has proved to be difficult to perform the tests required.
New tests relating to spectrum sharing and provision of “Listen Before Talk” features apply which requires the application of significant new test methodology.
Both versions 1.7.1 and 1.8.1 currently provide a presumption of conformity (or compliance) with Article 3.2 of the R&TTE Directive. Version 1.7.1 will cease to provide a presumption of conformity on 31/12/2014. So manufacturers can continue to issue their Declarations of Conformity to V1.7.1 up until that date, provided this additional clause in the EU Official Journal is also met:
“This version of the standard gives presumption of conformity with the requirements of Article 3(2) of Directive 1999/5/EC under the following condition: The equipment shall implement an adequate spectrum sharing mechanism, e.g. LBT (Listen Before Talk), DAA (Detect And Avoid), etc., in order to comply with the requirement specified in clause 4.3.5 of this version. Such a mechanism shall facilitate sharing between the various technologies and applications which currently exist and in case of congestion, users will be ensured equal access (and as a consequence a graceful degradation of service to all users). The efficiency of the various sharing mechanisms can be assessed using the appropriate clauses of EN 300328 version 1.8.1.”
So manufacturers should have evidence of compliance with this clause if they are to continue to market products in the EU and provide Declarations of Conformity to V1.7.1 of the standard.
TÜV SÜD Product Service can provide UKAS accredited testing to EN 300 328 V1.8.1. Please contact firstname.lastname@example.org for further details.