LEARN ABOUT EN 55022

Radio disturbance characteristics & limits and methods of measurement for Information Technology Equipment (ITE)

A modified product of CISPR 22, EN 55022 applies to information technology equipment (ITE). Limits are specified within the standard for protection of radio services in industrial, commercial or residential environments, and procedures are given for the measurement of the levels of spurious signals generated by the ITE.

The European Committee for Electrotechnical Standardization (CENELEC), the European organization responsible for standardization in the electrotechnical engineering field, produced this standard.

The publication was meant to fix limits of disturbance, describe methods of measurement, standardize operating conditions and interpretation of results, as well as establish uniform requirements for the radio disturbance level of the equipment contained in the scope.

Compliance with EN 55022 gives partial presumption of conformity with the European EMC Directive, 2004/108/EC. Most products also require assessment to the companion standard EN 55024, for immunity to electromagnetic interference and transient phenomenon. Additionally, devices powered via the A.C. mains, may require additional testing for power line harmonics and power line flicker.

The types of ITE that would be tested according to EN 55022 includes computer hardware and software, operating systems, web-based information and applications, telephones and other telecommunications products, video equipment and multimedia products, information kiosks, and office products such as photocopiers and fax machines.

The prefix “EN” stands for “European Norm” which are written by the European Committee for Standardization (CEN), the European Committee for Electrotechnical Standardization (CENELEC), and the European Telecommunications Standards Institute (ETSI). The vast majority of ENs that are relevant for the EMC Directive are produced by the CENELEC.

Harmonized standards are European Norms produced by CEN, CENELEC or ETSI. This is following a mandate issued by the European Commission for use with one or more directives. The lists of harmonized standards suitable for each Directive are published from periodically in an official publication called the Official Journal of the European Union, often referred to as “the OJ”.

The date of publication (dop) for an EN standard is commonly 6 months from the date of availability (dav), while the date the standard becomes mandatory is its date of withdrawal (DOW).

Formed by a consensus among enterprises, public authorities, consumers, and trade unions, all European Standards, EN 55022 included, take shape through a process organized by independent, recognized standardization bodies at national, European and international level.