Information Technology Equipment – Radio disturbance characteristics – Limits and methods of measurement
Published: May 10th, 2022
EN 55022 is a modified derivative of CISPR 22 and applies to, as the name implies, information technology equipment (ITE). Procedures are given for the measurement of the levels of spurious signals generated by the ITE and limits are specified within the standard for protection of radio services in industrial, commercial or residential environments.
The standard is produced by CENELEC, the European Committee for Electrotechnical Standardization. CENELEC is the European organization responsible for standardization in the electrotechnical engineering field.
The intention of this publication is to establish uniform requirements for the radio disturbance level of the equipment contained in the scope, to fix limits of disturbance, to describe methods of measurement and to standardize operating conditions and interpretation of results.
Compliance with this standard gives partial presumption of conformity with the European EMC Directive, 2004/108/EC. Most products will 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.
Information Technology Equipment (ITE), as would be tested for 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.
Europe has a series of standards prefixed “EN” – European Norm. These 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 CENELEC.
Harmonized standards are ENs produced by CEN, CENELEC or ETSI, 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 time to time in an official publication called the Official Journal of the European Union, often referred to as “the Official Journal” or “the OJ”. We have links to harmonized standards lists on our European Conformity Assessment page.
The date of publication (dop) for an EN standard is commonly 6 months from the date of availability (dav). The date the standard becomes mandatory is its date of withdrawal (DOW).
All European Standards, including EN 55022, are shaped by consensus among enterprises, public authorities, consumers, and trade unions, through a consultation process organized by independent, recognized standardization bodies at national, European and international level.
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