The present document specifies technical characteristics and methods of measurements for wireless microphones, similar RF audio link equipment, cordless audio (including low power Band II transmitters), in-ear monitoring, cochlear implant and assistive listening devices, intended for the transmission of music and speech including the associated ancillary equipment in respect of electromagnetic compatibility, as detailed in table 1.
Technical specifications related to the antenna port and emissions from the enclosure port of the radio equipment are out of scope of the present document. Such technical specifications are found in the relevant product standards for the effective use of the radio spectrum, see table 1.
The present document specifies the applicable test conditions, performance assessment and performance criteria for wireless microphones, similar RF audio link equipment, cordless audio, in-ear monitoring, ALD and Cochlear Implants and associated ancillary equipment. This equipment can use analogue or digital modulation techniques.
Table 1: Radio Technologies in scope of the present document
Technology; ETSI Standard
Wireless Microphones
In-Ear Monitoring
Wireless Multichannel Audio Systems;
ETSI EN 300 422-1
Assistive Listening Devices
Cochlear Implants
Neck loops-T-Coil
Personal Sound Amplifiers
Hearing Aid Systems;
ETSI EN 300 422-4
Cordless Audio
Low Power FM Tx
Low Power Radio Microphones
In-Ear Monitoring;
ETSI EN 301 357-1
Audio Links;
ETSI EN 300 454-1
For cochlear implants more stringent EMC standards exist and Annex E provides information on its relationship to the present document.
NOTE 1: Technical specifications related to conducted emission EMC requirements below 9 kHz on the AC mains port of radio equipment are out of scope of the present document. Such technical specifications are normally found in the relevant product family standards for AC mains powered equipment (e.g. EN 61000-3-2 and EN 61000-3-3).
NOTE 2: The relationship between the present document and essential requirements of article 3.1(b) of Directive 2014/53/EU is given in Annex A.
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