Electromagnetic compatibility of multimedia equipment – Immunity requirements

Published: May 10th, 2022

EN IEC 55035 is a new standard that combines EMC immunity requirements for IT equipment, consumer electronics such as audio and video equipment, and broadcast equipment within a multimedia technology equipment standard (MME). This standard applies to multimedia equipment (MME) with an AC or DC supply voltage rating of 600 V or less. EN IEC 55035 is aligned with EN IEC 55032 for emissions and would consider to be part of the requirements needed to demonstrate compliance with the EU EMC Directive 2014/30/EU.

This standard will replace EN IEC 55024 and EN IEC 55020. This new standard includes both new procedures and revised threshold values. Due to the technological integration of the functions of MME, performance standards shall be determined based on the function rather than the equipment.

Due to technology convergence of the functions of MME, the performance criteria have been determined on a function-orientated basis rather than on an equipment-orientated basis.

Equipment with a DC power port which is powered by a dedicated AC/DC power converter is defined as AC mains powered equipment.

The immunity tests required by EN 55035 shall be carried out individually, in any sequence. The same sample shall be used for all tests relating to a particular EM phenomenon, however other samples of the EUT may be used to test against different EM phenomena. These other samples shall be of the same type, including construction, software, firmware and other elements which may impact the result of the tests.

For Electrostatic discharging in accordance with IEC 61000-4-2:2008 shall be applied only to points and surfaces of the EUT which are expected to be touched during normal operation, including user access operations specified in the user manual, for example cleaning or adding consumables when the EUT is powered. The application of discharges to the contacts of open connectors is not required.

For continuous RF electromagnetic field disturbances in accordance with IEC 61000-4-3 has higher frequency spot testing to 5 GHz.

For Surges in accordance with IEC 61000-4-5:2005, the requirement in the basic standard to test a previously unstressed EUT is not applicable.

For Voltage Dips and Interruptions in accordance with IEC 61000-4-11:2004 there is a change in the degrees to be tested.

The following is a list of the applicable tests referenced by EN IEC 55035:

IEC 61000-4-2 Electrostatic discharge resistance examination

IEC 61000-4-3 Test for resistance to radiofrequency and electromagnetic fields

IEC 61000-4-4 Test for electrical transient/burst immunity

IEC 61000-4-5 Surge resistance evaluation

IEC 61000-4-6 Resistance to disturbances induced by radiofrequency fields

IEC 61000-4-8 Power frequency magnetic field immunity examination

IEC 61000-4-11 Immunity tests for voltage dips, brief interruptions, and voltage variations

IEC 61000-4-20 Transverse electromagnetic (TEM) waveguide emission and immunity testing

IEC 61000-4-21 Methods of reverberation chamber testing

ISO 9241-3:1992 Part 3: Visual display requirements Ergonomic requirements for office work with visual display terminals (VDTs)

IEEE Standard 802.3 IEEE Ethernet Standard, Section Three

For MME that fall under the scope of EN IEC 300386 or any part(s) of the EN IEC 301489 series, the requirements of these product-specific/family-specific standards take precedence over those of EN IEC 55035. This may be considered if the product must comply with the EU Radio Equipment Directive 2014/53/EU.

Please call Compatible Electronics to discuss the best method for ensuring that your products adhere to the current regulations and guidelines.

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