4. Measuring device immunity

4.1 General information on immunity testing

The aim of immunity testing is to guarantee reasonable immunity to various environmental disturbances, however infrequent (static electricity discharge (ESD), lightning), in order to avoid more or less pronounced damage resulting from malfunction. These consequences can range from simple inconvenience to serious material damage or even bodily injury.

For this reason, while until the early 1990s, manufacturers had no legal obligation to guarantee the electromagnetic immunity of their equipment, some countries, notably the European Community, have introduced a legal compliance requirement. In contrast, the legal obligation not to emit interfering signals (§ ) was in force long before.

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Measuring device immunity

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page Measuring disturbances produced by a device

Other EMC measures

Bibliography

(1) - SMITH (A.A.) Jr. et al - Calculation of site attenuation from antenna factors. - IEEE Trans. on EMC, vol. EMC 24, n° 3, août 1982.
(2) - SCOTT BENETT (W.), SMITH (A.A.) Jr - Final comments on « Calculation of site attenuation from antenna factors »....

Norms and Standards

European standards

AFNOR Association française de normalisation

Transmission de signaux sur les réseaux électriques basse tension dans la bande de fréquences de 3 kHz à 148,5 kHz. Partie 1 : règles générales, bandes de fréquences et perturbations électromagnétiques (indice de classement: C 90-201-1) - NF EN 50065-1 - 05-02
Compatibilité électromagnétique. Norme générique émission....

Regulations

Directive 2004/108/EC of the European Parliament and of the Council of December 15, 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC (OJ L of December 31, 2004) came into force in July 2007. It will definitively replace EMC Directive 89/336/EEC in July 2009.