CISPR

CISPR serves several purposes. First, it exists to protect against radio reception interference that is caused by a variety of electrical appliances, ignition systems and electricity supply systems, including electric transport systems; industrial, scientific and electromedical radiofrequencies (but excluding radiation from transmitters intended to convey information); sound and television broadcasting receivers; and IT equipment.

Second, CISPR deals with the equipment and the methods that are used to measure interference.

Finally, it defines the limits of the interference that is caused by the various sources listed.

CISPR and its SCs are responsible for 37 publications.

Subcommittees in CISPR

SC A (Subcommittee CIS/A) covers radio-interference measurements and statistical methods and is responsible for the CISPR 16 series of standards. It specifies EMC instrumentation, EMC measurement techniques, uncertainties, statistical methods and limit modelling. At present, it is working on improving existing standards as well as developing new methods and techniques.

SC B (Subcommittee CIS/B) handles interference relating to industrial, scientific and medical RF (Radio Frequency) apparatus.

SC D (Subcommittee CIS/D) deals with EM (Electromagnetic) disturbances related to electric and electronic equipment on vehicles and devices powered by internal-combustion engines.

SC F (Subcommittee CIS/F) covers interference relating to household appliances, tools, lighting and similar equipment.

SC H (Subcommittee CIS/H) sets limits for the protection of radio services.

SC I, (Subcommittee CIS/I) made up of the former SCs E and G, deals with the EMC of ITE (Information Technology Equipment), multimedia equipment and receivers, and is working on new emission and immunity standards. ITE includes audio, video and/or broadcast receiving equipment or a combination of these functions, such as radio and television receivers, audio amplifiers, DVD players, portable entertainment devices, for example, CD players, computers and peripheral equipment, routers, hubs and switches, telecommunication equipment, gaming machines, audio/video equipment intended to be mounted in vehicles, electronic musical instruments.

SC I is working on the future emission standard CISPR 32: Information technology, multimedia equipment and receivers - Radio disturbance characteristics - Limits and methods of measurement, is intended to replace the current CISPR 13 and CISPR 22, while the future immunity standard CISPR 35 will replace CISPR 20 and CISPR 24.

At the same time, SC I is working on measurement methods and emission limits for PLT (Power Line Telecommunications) devices, an issue which has been pending for many years. The project under development deals with measurement methods and emission limits for PLT devices connected to the mains at the customer premises. These PLT devices, able to establish network termination or provide local connections to other PLT devices connected in the same premises, are called “indoor” PLT devices.

The task of the project team in charge of this new technical work is to develop it in accordance with the current requirements of CISPR 22.