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The present document provides a framework for standardized catalogue metadata in data spaces, in support of the 
publication and discovery of data products and to assure findability of data products within and across data spaces. 
The present document: 
a) sets out the common catalogue metadata, the minimum set to be applied across all common European data 
spaces; 
b) establishes rules on the setting out of catalogue metadata extensions, specific to a domain-specific data space 
or to a specific data spaces set. 

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. 
Low quality speech applications as toy microphones, baby phones etc. operating at frequencies below 50 MHz, 
occupied bandwidth < 25 kHz and operating according to CEPT/ERC/REC 70-03 [i.2], Annex 1 are out of scope of the 
present document. 

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 [i.6] and EN 61000-3-3 [i.7]). 
NOTE 2: The relationship between the present document and essential requirements of article 3.1(b) of 
Directive 2014/53/EU [i.1] is given in Annex A.