Glossary

CE

Self-declaration by the manufacturer certifying that the device is compliant with all the applicable European directives

CEI

Comitato Elettrotecnico Italiano (Italian Electrotechnical Committee): organization recognized by the Italian government and the European Union responsible for standardization in the fields of electrotechnology, electronics and telecommunications

CEN

Comitato Europeo per la Normalizzazione (European Committee for Standardisation): the only European organisation recognised in accordance with Directive 98/34/EC for the planning, editing and adoption of European standards in all sectors of economic activity (with the exception of electrical engineering and telecommunications).

CENELEC

European Committee for Electrotechnical Standardization (Comité Européen de Normalisation Electrotechnique)

Certification

Procedure run by KNX Association in order to verify quality and interoperability of products for home and building automation based on the KNX standard

Certified product

A product that conforms to the KNX Specifications minimum requirements and has successfully passed the KNX Association Conformance Assessment; as a consequence it may bear the KNX logo

Checksum

KNX telegram field for the identification of possible transmission errors

Collision

Event that occurs when two or more bus devices begin transmitting a telegram at the same time (see also CSMA/CA)

Communication protocol

Set of fixed rules for interfaces, formats and services that enable the exchange of information between bus devices in a system

Compact fluorescent lamp

Low-pressure discharge lamps with ballast integrated, available also as dimmable version (it should be clearly indicated by the manufacturer on the packaging). Very common in the domestic lighting applications are compact fluorescent lamps with standard screw base (e.g. E27 or E14), which can easily replace the old incandescent lamps in the same lampholders

Configuration

Set of parameters specific of the application to be realized with which a KNX device is programmed with ETS (see also ETS)

Coupler between transmission media

KNX bus device for the connection of bus lines made with different transmission's media.

CSMA/CA

Carrier Sense Multiple Access / Collision Avoidance: access protocol to the bus used by KNX that allows the management of a collision between telegrams sent simultaneously from different devices (see also collision)