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HD 549 S1:1989 Standard

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  Keywords:

#conference #equipment #applies #electrical #requirements

  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 60523:1993

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

Direct-current potentiometers

EN 60947-1:2007

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

Low-voltage switchgear and controlgear - Part 1: General rules

EN 60825-4:2006

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

Safety of laser products - Part 4: Laser guards

EN 60825-12:2004

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

Safety of laser products - Part 12: Safety of free space optical communication systems used for transmission of information

EN 60831-1:2014

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

Shunt power capacitors of the self-healing type for a.c. systems having a rated voltage up to and including 1 000 V - Part 1: Gene...

EN 60831-1:2014/AC:2014

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

Shunt power capacitors of the self-healing type for a.c. systems having a rated voltage up to and including 1 000 V - Part 1: Gene...

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