What is the difference between the EN 50371 and EN 62479 standard?

The EN 62479 has additional methodologies (four possible compliance routes) of demonstrating compliance over that which EN 50371 covered. The EN 50371 standard provided mainly a basis that where the average output power emitted is less than or equal to 20mW and the transmitting peak is less than 20W then the apparatus was deemed to comply with the basic restrictions without testing.

• The EN 62479 standard provides four possible compliance routes, including the one listed in EN 50371 (See EN 62479 Section 4.1A - 4.1D and Section 4.2). The possible compliance routes are presented graphically on page 10 of EN 62479.
•  Annex A.2 provides the Low power exclusion level (Pmax) which is, the SAR limit (2.0W/kg for general population exposure) multiplied by the averaging mass which is 10g for localised SAR. So the low power exclusion level, Pmax for general population exposure for localised SAR would be 20mW. For occupational exposure, the SAR limit is greater and therefore Pmax would be greater.
•  Section 4 provides additional general considerations for example for transmitters where there is more than one antenna configuration, and also guidance on exposure for multiple transmitting sources (simultaneous transmission)
• Section 5 provides guidelines on the EN 62479 assessment reporting requirements.
•  Section 6 provides guidance on the use of Measurement Uncertainty in the evaluation of compliance to limits.
•  Annex B provides an alternate Pmax derivation for devices located within 25mm of the body and within 300MHz to 6GHz.
•  Annex C provides compliance requirement for a pulsed field.

The BS EN 62479: 2010 standard can be downloaded from BSOL as the BS EN has now been published.

Do you have a question ask it here?

Leaders in EMC Testing , Environmental Testing, Safety Testing, Radio and Telecoms Testing, CE Marking, Vibration Testing, Climatic Testing, Certification, Training and Consulting