BS EN 60118-13:2011 pdf free.Electroacoustics ——Hearing aids Electromagnetic compatibility (EMC).
BS EN 60118-13 This part of lEC 60118 in principle covers all relevant EMC phenomena for hearing aids. EMCphenomena,such as RF emission and electrostatic discharge, are not currently known to be asignificant problem in connection with hearing aids and are therefore not dealt with.Based onnew knowledge, they could be considered in connection with future revisions or extensions ofthis standard.Hearing aid immunity to high frequency electromagnetic fields originating fromdigital wireless devices operating in the frequency ranges 0,8 GHz to 0,96 GHz and 1,4 GHzto 2,48 GHz is currently identified as the only relevant EMC phenomenon regarding hearingaids.Future editions of this part of lEC 60118 may add tests for other frequency bands, asthey come into more common use.IEC 61000-4-3 is the basis for relevant EMC tests to beconducted on hearing aids.Measurement methods and acceptance levels are described inthis part of lEC 60118.
For the purpose of this part of lEC 60118, two immunity classes of hearing aids are defined(see 3.1) related to their use. “Bystander compatible” ensures that a hearing aid is usable inenvironments where digital wireless devices are in operation in the proximity of the hearingaid wearer. “User compatible” hearing aids ensures that a hearing aid is usable when thewearer is using a digital wireless device at the wearer’s own aided ear.
Measurement methods for hearing aids with non-acoustic outputs and for hearing aidsconnected to other equipment by cables are not given in this standard.
The following referenced documents are indispensable for the application of this document.For dated references, only the edition cited applies.For undated references, the latest editionof the referenced document (including any amendments) applies.IEC 60118-0，Hearing aids – Part 0: Measurement of electroacoustical characteristicsIEC 60118-2,Hearing aids – Part 2: Hearing aids with automatic gain control circuits.
hearing aid:wearable instrument,containing a variety of individual adjustment facilities,intended to aid aperson with impaired hearing. Consisting of a microphone,amplifier, an induction pick-up coil(optional) and earphone, powered by a battery.BS EN 60118-13 pdf download.