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CEI membership discount

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our systems show that your name is connected to a company associated with CEI: you would therefore be entitled to thediscount reserved for our members for CEI products and services. To check the validity of the association and benefit from the discounts, it is necessary to enter the register number assigned to your company in the box below.

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From now on, after logging into your MyNorma account, you can purchase our products at the price reserved for our members.

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CEI 84-9

CEI Classification: 84-9

Sistemi di conferenza
Prescrizioni elettriche ed audio
standard
CEI
CEI
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Publication Date: 1997-05
ValidFrom: 1991-10
Language: IT
Pages: 48
Issue Num.:  3065 R
Commitee: CEI-CT100/103
EU Directives Low voltage (LVD)
shopping_cart Starting from € 22.00
La Norma si applica ai sistemi di conferenza ed agli elementi che costituiscono o che sono utilizzati come ausiliari di tali sistemi (cuffie, microfoni, apparecchiature di amplificazione). Essa descrive i diversi tipi di sistema di conferenza, che possono essere con fili e senza fili, e specificate caratteristiche elettriche essenziali delle apparecchiature audio per sistemi di conferenza.
La presente Norma costituisce la ristampa senza modifiche, secondo il nuovo progetto di veste editoriale, della Norma pari numero ed edizione (Fascicolo 1612).

Relations

Replaces: CEI 84-9

See also

IEC 914:1988
HD 549 S1:1989

International Coding Standard (ICS)

33.160.01
Audio, video and audiovisual systems in general
* Stage and studio equipment, see 97.200.10
33.160.60
Multimedia systems and teleconferencing equipment

Annotation

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Standard Evolution

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ICS

International Classification for Standards (ICS) is an international classification system for technical standards.

The ICS is a hierarchical classification organized on three levels.

Level 1 covers the main fields of activity in standardization, e.g. road vehicle engineering, agriculture, metallurgy.

Each field has a two-digit notation, e.g.

  43    Road Vehicle Engineering

The main fields are subdivided into groups (level 2). The notation of a group consists of the field notation and a three-digit group number, separated by a point, e.g.

  43.040    Road vehicle systems

Some groups are further divided into sub-groups (level 3). The notation of a sub-group consists of the group notation and a two-digit number, separated by a point, e.g.

  43.040.20 Lighting, signaling and warning devices

You can identify the ICS code of your interest by typing the code or a keywordword in the dropdown ICS field, and by selecting one of the filtered results.

Search also in the summary/description of the standard

By flagging this control, the search for keywords will not be limited to the Standard Number and Title fields, but will also be performed in the Abstract of the standard.

This way, you will get more results.

You should use this option when you can not find the desired result with the standard approach and it is necessary to extend the scope of the search: by increasing the number of results, you will increase the number of non-relevant elements, as well.