EN 55022 is a modified derivative of CISPR 22 that applies to information technology equipment (ITE) as defined as any equipment:
– Which has a primary function of either (or a combination of) entry, storage, display, retrieval, transmission, processing, switching or control of data and of telecommunication messages and which may be equipped with one or more terminal ports typically operated for information transfer;
– With a rated supply voltage not exceeding 600 V.
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 in the frequency range of 9 kHz to 400 GHz for both class A and class B equipment.
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 AC 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.
Retrieved 03/03/2014 from Compatible Electronics: CENELEC EN 55022; CENELEC: EN 55022:2010; Keystone Compliance: EN 55022