CEI/IEC 914-1988 pdf free download. Conference systems-Electrical and audio requirements.
CEI/IEC 914-1988 applies to conference systems and to the parts of which they are composed or which are used as auxiliaries to such systems (headphones, microphones, amplification equipment).
CEI/IEC 914-1988 describes the different types of conference systems with both wired and wireless systems, and specifics the basic electrical requirements of audio equipment for conference systems.
The purpose of CEI/IEC 914-1988 is to prcscribc thc minimum requirements for confercncc systems in ordcr to ensure interchangeability and optimum performance under conditions of normal operation.
This standard should facilitate the determination of quality of conference systems, the comparison of different systems and the determination of their proper application by listing the characteristics which arc useful for thcir specification.
In this standard, the word “quality” is intended to denote mainly electro-acoustical quality such as intelligibility and freedom from interference, and not the quality from the point of view of safety, durability, resistance to environmental conditions, etc.
Quality should he judged from the point of view of the user (intcrpretcr, delegate, etc.), who is concerned with the characteristics of the system as a whole and not, as a rule, with design details or components.
The use of this standard, both by manufacturers and users, will facilitate comparison between manufacturers’ specifications and users’ requirements for a particular system.
4. Persons
4.1 Delegate
A person participating in a conference having the facilities of a conference system to speak and listen.
4.2 interpreter
A person who interprets a spoken language into one or more other languages via the interpretation system.
4.3 Operator
A person operating the control equipment and the audiovisual equipment, changing tapes on tapc recorders and monitoring quality of sound to the interpreters and delegates.
4.4 Technician
A person who can perform the functions of an operator and is in addition trained in thc diagnosis and repair of equipment faults.
9. Conference room configurations
9.1 Round table configuration
The delegates are positioned around a table or a set of tables. All delegates arc able to take part in the conference.
9.2 Seminar configuration
A lecturer can deliver his speech from a lectern or a table at the front of the room. There may also be a table for a chairman or a panel. The delegates are positioned facing the front of the room.
The lecturer and, if present, the chairman or the panel as well as the delegates are able to take part continuously in the discussion.
9.3 Lecture configuration
A lecturer can deliver his spccch from a lectern or a table at the front of the room. There may also be a table for a chairman or a panel. The audience is positioned facing the front of the room.
The lecturer and, if present, the chairman or the panel arc able to take part continuously in the discussion; the audience has a limited possibility for questions and discussion.