Comité International Spécial des Perturbations Radioélectriques Totally Explained

Everything about Cispr totally explained

The Special International Committee on Radio Interference (abbreviated CISPR from the French name of the organization, Comité international spécial des perturbations radioélectriques) is concerned with developing norms for detecting, measuring and comparing electromagnetic interference in electric devices. Its members are partially also in the International Electrotechnical Commission (IEC). It was founded in 1934. The CISPR is divided into six subcommittees, each dealing with a different topic:

A - measurement of radio interference and statistical methods
B - measurement of interference regarding industrial, scientific or medical (ISM) equipment, high voltage equipment, power lines, or traction devices
D - interference in motor vehicles (both gasoline and electric)
F - interference in household appliances, tools, and lighting equipment
H - limitations to protect radio frequencies
I - electromagnetic compatibility of information technology (IT) equipment (for example computers), multimedia / hi-fi devices and radio equipment (receivers)

CISPR's publications are basically norms regarding measurement of radiated and conducted interference. They specify cable lengths, measurement device configurations and grounding measures, so that results become more comparable. The norms also concern themselves with immunity from external interference. With the CISPR norms, companies can require compliance to a specific norm from a supplier, instead of doing all the measurements internally (and having to develop an internal norm to be able to compare their own measurements).
Until now, over thirty CISPR standards have been published. Some of the better known are:

CISPR 10 - Organization, Rules and Procedures of the CISPR. (1971)

CISPR 11 - Industrial, Scientific and Medical (ISM) Radio-Frequency Equipment -- Electromagnetic Disturbance Characteristics -- Limits and Methods of Measurement.

CISPR 14 - Electromagnetic Compatibility -- Requirements for Household Appliance, Electric Tools, and Similar Apparatus: 1) Emissions, 2) Immunity.

CISPR 22 - Information Technology Equipment -- Radio Disturbance Characteristics -- Limits and Methods of Measurement.

CISPR 25 - Radio disturbance characteristics for the protection of receivers used on board vehicles, boats, and on devices - Limits and methods of measurement.Further Information

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