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HD 549 S1:1989 Standard

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  Keywords:

#conference #equipment #applies #systems #parts

  Directive

Low voltage (LVD) Directive (2014/35/EU)

  Last Official Journal reference

Tuesday 22nd of July 2025

  Description:

Conference systems - Electrical and audio requirements

  Purpose

Applies to conference systems and to parts of which they are composed or which are used as auxiliaries to such systems (headphones, microphones, amplification equipment). Describes the different types of conference systems with both wired and wireless systems, and specifies the basic electrical requirements of audio equipment for conference systems. Prescribes the minimum requirements for conference systems in order to ensure interchangeability and optimum performance under conditions of normal operation.

  Publication

Wednesday 20th of April 2016

  Related Standards

EN ISO 11252:2013

Low voltage (LVD) Directive (2014/35/EU)

Lasers and laser-related equipment - Laser device - Minimum requirements for documentation (ISO 11252:2013)

EN 13637:2015

Low voltage (LVD) Directive (2014/35/EU)

Building hardware - Electrically controlled exit systems for use on escape routes - Requirements and test methods

HD 308 S2:2001

Low voltage (LVD) Directive (2014/35/EU)

Identification of cores in cables and flexible cords

HD 368 S1:1978

Low voltage (LVD) Directive (2014/35/EU)

Direct acting recording electrical measuring instruments and their accessories

HD 597 S1:1992

Low voltage (LVD) Directive (2014/35/EU)

Coupling capacitors and capacitor dividers

HD 597 S1:1992/AC:1992

Low voltage (LVD) Directive (2014/35/EU)

Coupling capacitors and capacitor dividers

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