16

04/00

Fig. 7

Propagation of electromagnetic interference and EMC measurement techniques

2.4

EMC regulations und legislation

A wide range of legislation and of harmonized standards have come into force and been published

in the field of EMC in the past few years. In the European Union, the EMC Directive 89/336/EEC of

the Council of the European Communites has come into effect on the 1st of January 1996. As of

this date, all electronic equipment must comply with the protection objectives of the EMC Directive.

The conformity with the respective standards must be guaranteed by the manufacturer or importer

in the form of a declaration of conformity. A CE mark of conformity must be applied to all equipment.

As a matter of principle, all electrical or electronic equipment, installations and systems must meet

the protection requirements of the EMC Directive and/or national EMC legislation. A declaration of

conformity by the manufacturer or importer and a CE mark are required for most equipment. Excep-

tions to this rule and special rulings are described in detail in the EMC laws.

New, harmonized European standards have been drawn up in relation to the EEC’s EMC Directive

and the national EMC laws. These specify measurement procedures and limit values or test sever-

ities, both for interference emission and for the interference susceptibility (or rather, immunity to in-

terference) of electronic devices, equipment and systems.

The subdivision of the European standards into various categories (cf. following table) makes it

easier to find the rules that apply to the respective equipment.

The generic standards always apply to all equipment for which there is no specific product family

standard or dedicated product standard.

The basic standards contain information on interference phenomena and general measuring

methods.

SSB0016-2

Quelle

Breitbandantenne

Messempfänger

Rahmenantenne

Netzzuführung

Netz-

Nachbildung

Stabantenne

Nahfeldkopplung

S

Ι

S

U

Stromwandler

S

H

Messempfänger

Messempfänger

Messempfänger

Tastkopf

Spektrumanalysator

Speicheroszillograph

Transientenrekorder

SSB0016-2

Selective voltmeter

Spectrum analyzer

Storage oscilloscope

Transient recorder

Near field coupling

Broadband dipole antenna

probe

Source

Line impedance

Loop antenna

Rod antenna

Selective voltmeter

Selective voltmeter

Selective voltmeter

stabilization

network

interference fields

interference fields

interference fields

(radiated emission)

Power supply

Current

probe

Voltage

General Technical Information