EN 55032, “Electromagnetic compatibility of multimedia equipment – Emission Requirements”, sets the limits and measurement methods for the radio-frequency disturbance emitted by information technology, audio, video and broadcast receiver equipment. It replaced EN 55022 for information technology equipment and EN 55013 for broadcast receivers. The emission side of EMC testing for these products is done to this standard.
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EN 55032 at a glance
| Edition cited in the EU Official Journal | EN 55032:2015 |
|---|---|
| Official title | Electromagnetic compatibility of multimedia equipment – Emission Requirements |
| Legislation supported | EMC Directive 2014/30/EU |
| Type of standard | EMC product family standard |
Products covered
The standard applies to multimedia equipment: information technology equipment, audio and video equipment, broadcast receivers and entertainment lighting control equipment. Typical examples:
- Computers, laptops, servers and monitors
- Printers, scanners and multifunction office devices
- Modems, routers, network switches
- Televisions, satellite receivers, media players
- Audio systems, amplifiers and professional audio and video equipment
- Point-of-sale terminals and kiosks
Household appliances fall under EN 55014-1 and industrial, scientific and medical equipment under EN 55011. EN 55032 deals with emission only; the immunity requirements for the same product family are in EN 55035, and the two are applied together.
Main requirements of the standard
- Equipment class: Class B limits are for equipment used in a residential environment and are stricter; Class A limits are for other environments.
- Class A warning: The documents of Class A equipment state that it may cause radio interference in a residential environment.
- Conducted emission at the mains port: Disturbance voltage at the AC mains port is measured from 150 kHz to 30 MHz.
- Conducted emission at wired network ports: Common-mode disturbance is measured at Ethernet and similar communication ports.
- Radiated emission: Field strength is measured from 30 MHz to 1 GHz; depending on the highest internal frequency, measurement extends up to 6 GHz.
- Ports specific to broadcast receivers: Separate measurements are defined for disturbance at antenna and tuner ports.
- Operating conditions and arrangement: The equipment is measured in a typical arrangement, with peripherals and cables connected and its functions running.
- Test report content: The arrangement, cables, operating mode and highest emission values are recorded.
EN 55032 tests
Measurements are made in the operating mode and cable layout that give the highest emission.
| Test or check | What is verified? |
|---|---|
| Conducted emission at the AC mains port | Disturbance conducted into the mains is below the limits of the chosen class (artificial mains network) |
| Conducted emission at wired network ports | Common-mode disturbance on communication cables is below the limits |
| Radiated emission up to 1 GHz | Field strength radiated by the equipment and its cables is below the limits |
| Radiated emission above 1 GHz | Radiation from high-frequency processors and clock circuits is below the limits |
| Antenna and tuner port measurements | For broadcast receivers, disturbance leaving these ports is below the limits |
| Harmonic current and flicker | Assessed with EN IEC 61000-3-2 and EN 61000-3-3 for mains-connected equipment |
Radiated emission is measured on an open-area test site or in a semi-anechoic chamber.
Its place in CE marking
- EMC assessment: The environment, the ports and the applicable emission and immunity standards are identified.
- Design: Board layout, shielding, filtering and cables are chosen with the limits of the target class in mind.
- Testing: Emission is tested to EN 55032 and immunity to EN 55035.
- Technical file: The test report, set-up photographs and diagrams go into the technical file.
- Declaration of conformity: EN 55032 is listed among the standards applied and the CE marking is affixed.
Conformity with a harmonised standard gives presumption of conformity with the corresponding essential requirements of the EMC Directive 2014/30/EU. The safety side of mains-powered multimedia equipment is assessed with EN 62368-1.
Standards applied together
- EN 55035: Immunity of multimedia equipment
- EN 62368-1: Safety of audio/video and ICT equipment
- EN IEC 61000-3-2: Limits for harmonic current emissions
- EN 61000-3-3: Limits for voltage fluctuations and flicker
- EN 55014-1: Emission of household appliances
- EN 55011: RF disturbance of industrial, scientific and medical equipment
Frequently asked questions
Class A or Class B?
Equipment used at home or in a similar setting must meet the Class B limits. Equipment used only in commercial or industrial settings may be Class A, with the warning in its documents.
Is my EN 55022 report still valid?
EN 55022 has been withdrawn and replaced by EN 55032. For a new declaration of conformity the product should be assessed to EN 55032.
Which edition applies?
The edition cited in the EU Official Journal under the EMC Directive is EN 55032:2015. Check the current citation before testing starts.
Other standards in this group
- EN 55015: Radio Disturbance of Lighting Equipment
- EN 55014-1: EMC Emission of Household Appliances
- EN 55035: EMC Immunity of Multimedia Equipment
- EN 55011: RF Disturbance of Industrial Equipment
