ETSI EN 301 357-2017 Cordless audio devices in the range 25 MHz to 2 000 MHz Harmonised Standard covering the essential requirements of article 3 2 of Directive 2014 53 EU (V2 1 1).pdf

1、 ETSI EN 301 357 V2.1.1 (2017-06) Cordless audio devices in the range 25 MHz to 2 000 MHz; Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU HARMONISED EUROPEAN STANDARD ETSI ETSI EN 301 357 V2.1.1 (2017-06) 2 Reference REN/ERM-TG17-19-2 Keywords audio, h

2、armonised standard, radio, radio MIC, testing ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice T

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7、all not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. ETSI 2017. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and L

8、TE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI EN 301 357 V2.1.1 (2017-06) 3 Contents Int

9、ellectual Property Rights 7g3Foreword . 7g3Modal verbs terminology 7g3Introduction 7g31 Scope 8g32 References 8g32.1 Normative references . 8g32.2 Informative references 9g33 Definitions, symbols and abbreviations . 10g33.1 Definitions 10g33.2 Symbols 11g33.3 Abbreviations . 11g34 Technical requirem

10、ents specifications . 12g34.0 General . 12g34.1 Cordless audio 12g34.1.1 In-vehicle cordless 12g34.1.2 Personal cordless 12g34.1.3 Broadband multi channel audio systems . 12g34.1.4 Band II LPD 12g34.2 Consumer radio microphones . 12g34.3 In-ear monitoring 12g34.4 Environmental profile . 12g35 Testin

11、g for compliance with technical requirements 13g35.1 Presentation of equipment for testing purposes 13g35.1.1 Introduction. 13g35.1.2 Choice of model for performance testing . 13g35.1.3 Definitions of alignment and switching ranges . 13g35.1.4 Alignment Range 14g35.1.5 Choice of frequencies . 14g35.

12、1.5.0 General 14g35.1.5.1 Testing of single channel equipment . 14g35.1.5.2 Testing of two channel equipment 14g35.1.5.3 Testing of multi-channel equipment (more than two channels) 14g35.1.6 Testing of equipment with an external frequency control . 14g35.1.7 Testing of equipment with an integral ant

13、enna . 15g35.1.7.0 General 15g35.1.7.1 Equipment with a permanent internal RF port 15g35.1.7.2 Equipment with a temporary RF port 15g35.2 Mechanical and electrical design 15g35.2.1 General 15g35.2.2 Physical Controls 15g35.2.3 Performance testing with integral antenna 15g36 Test conditions, power so

14、urces and ambient conditions 15g36.1 Normal and extreme test-conditions . 15g36.2 Test power source . 16g36.3 Normal test conditions 16g36.3.1 Normal temperature and humidity 16g36.3.2 Normal test power source voltage . 16g36.3.2.1 Mains voltage 16g36.3.2.2 Nickel-cadmium cells 16g36.3.2.3 Other pow

15、er sources 16g36.4 Extreme test conditions 17g3ETSI ETSI EN 301 357 V2.1.1 (2017-06) 4 6.4.1 General 17g36.4.2 Extreme temperatures . 17g36.4.2.0 General 17g36.4.2.1 Procedures for tests at extreme temperatures 17g36.4.3 Extreme test power source voltages 17g36.4.3.1 Mains voltage 17g36.4.3.2 Re-cha

16、rgeable battery power sources 17g36.4.3.3 Power sources using other types of batteries . 17g36.4.3.4 Other power sources 18g37 General conditions for testing 18g37.1 Band II LPD . 18g37.2 Normal test modulation 18g37.3 Test fixture . 19g37.4 Test site and general arrangements for radiated measuremen

17、ts 20g37.5 Modes of operation of the transmitter 20g37.6 Arrangement for test signals at the input of the transmitter . 20g38 Methods of measurement and limits for transmitter parameters 20g38.1 General . 20g38.2 Basic requirements for Band II LPD 21g38.3 Methods of measurement and limits for transm

18、itter parameters of Band II LPD . 21g38.3.1 General 21g38.3.2 Test site and general arrangements for radiated measurements 21g38.3.3 Test modulation 22g38.3.4 Effective radiated power (e.r.p.) . 22g38.3.4.1 Definition 22g38.3.4.2 Test procedure . 22g38.3.4.3 Limits 22g38.3.4.4 Measurement uncertaint

19、y 22g38.3.5 Occupied bandwidth . 23g38.3.5.1 Definition 23g38.3.5.2 Test procedure . 23g38.3.5.3 Limits 23g38.3.5.4 Measurement uncertainty 23g38.3.6 Frequency error . 23g38.3.6.1 Definition 23g38.3.6.2 Test procedure . 24g38.3.6.3 Limits 24g38.3.6.4 Measurement uncertainty 24g38.3.7 Transmitter tim

20、eout. 24g38.3.7.1 Definitions . 24g38.3.7.2 Test procedure . 24g38.3.7.3 Limits 25g38.3.7.4 Measurement uncertainty 25g38.3.8 Radiated spurious emissions . 25g38.3.8.1 Definition 25g38.3.8.2 Measurement procedure 25g38.3.8.3 Limits 25g38.3.8.3.1 Band II LPD 25g38.3.8.3.2 Combined equipments . 25g38.

21、3.8.4 Measurement uncertainty 26g38.4 Frequency error 26g38.4.1 General 26g38.4.2 Definition 26g38.4.3 Method of measurement . 26g38.4.4 Limit . 26g38.5 Carrier power 26g38.5.1 General 26g38.5.2 Definition 26g38.5.3 Method of measurement for equipment with integral antenna 27g38.5.3.1 Method of meas

22、urement under normal test conditions . 27g3ETSI ETSI EN 301 357 V2.1.1 (2017-06) 5 8.5.3.2 Method of measurement under extreme test conditions 27g38.5.4 Limit . 28g38.6 Channel bandwidth . 28g38.6.1 General 28g38.6.2 Definition 28g38.6.3 Measurement of Necessary Bandwidth (BN) . 28g38.6.4 Limits 29g

23、38.7 Spurious emissions and cabinet radiation . 30g38.7.1 Definition 30g38.7.2 Method of measuring the effective radiated power . 30g38.7.3 Limits 31g38.7.4 Measuring receiver . 31g38.8 Cordless audio transmitter shutoff 31g38.8.1 General 31g38.8.2 Definition 31g38.8.3 Method of measurement . 31g38.

24、8.4 Limits 31g39 Receiver 32g39.1 General . 32g39.2 Spurious emissions and cabinet radiation . 32g39.2.1 Definition 32g39.2.2 Method of measuring the power level in a specified load. 32g39.2.3 Method of measuring the effective radiated power of the enclosure 32g39.2.4 Method of measuring the effecti

25、ve radiated power . 33g39.2.5 Limits 33g39.3 Receiver sensitivity 33g39.3.1 Definition 33g39.3.2 Method of measurement . 33g39.3.3 Limits 34g39.4 Receiver adjacent channel selectivity . 34g39.4.1 Definition 34g39.4.2 Method of measurement . 34g39.4.3 Limits 35g39.5 Receiver blocking . 35g39.5.1 Defi

26、nition 35g39.5.2 Method of measurement . 35g39.5.3 Limits 36g310 Measurement uncertainty . 36g310.1 Compliance assessment when measurement uncertainty is equal to or less than maximum acceptable uncertainty 36g310.2 Compliance assessment when measurement uncertainty is greater than maximum acceptabl

27、e uncertainty 36g310.3 Maximum allowable measurement uncertainties for cordless audio and radio microphones. 37g310.4 Maximum allowable measurement uncertainties for Band II LPD 37g3Annex A (informative): Relationship between the present document and the essential requirements of Directive 2014/53/E

28、U . 38g3Annex B (normative): Measurement of Necessary Bandwidth (B) for analogue systems . 40g3B.1 Test configuration for measurement of the Necessary Bandwidth (B) for analogue systems 40g3Annex C (normative): Radiated measurement 41g3C.1 Test sites and general arrangements for measurements involvi

29、ng the use of radiated fields . 41g3C.1.1 General . 41g3C.1.2 Anechoic chamber 41g3C.1.3 Anechoic chamber with a conductive ground plane . 42g3C.1.4 Open Area Test Site (OATS) . 43g3C.1.5 Test antenna 44g3C.1.6 Substitution antenna . 44g3C.1.7 Measuring antenna . 45g3ETSI ETSI EN 301 357 V2.1.1 (201

30、7-06) 6 C.1.8 Stripline arrangement . 45g3C.1.8.1 General 45g3C.1.8.2 Description 45g3C.1.8.3 Calibration 45g3C.1.8.4 Mode of use 45g3C.2 Guidance on the use of radiation test sites . 45g3C.2.1 General . 45g3C.2.2 Verification of the test site . 45g3C.2.3 Preparation of the DUT 46g3C.2.4 Power suppl

31、ies to the DUT. 46g3C.2.5 Volume control setting for analogue speech tests 46g3C.2.6 Range length . 46g3C.2.7 Site preparation 47g3C.3 Coupling of signals . 47g3C.3.1 General . 47g3C.3.2 Data signals 47g3C.3.3 Speech and analogue signals 48g3C.3.3.0 General 48g3C.3.3.1 Acoustic coupler description.

32、48g3C.3.3.2 Calibration 48g3C.4 Standard test position . 48g3C.5 Test fixture . 49g3C.5.1 General . 49g3C.5.2 Description . 49g3C.5.3 Calibration 50g3C.5.4 Mode of use 50g3Annex D (informative): Derivation of radiated spurious emissions limit for Band II LPD 51g3Annex E (informative): Justifications

33、 for field strength measurement . 52g3Annex F (informative): Typical test layout 53g3F.1 Use of vehicle power leads . 53g3Annex G (informative): Bibliography . 54g3Annex H (informative): Change History 55g3History 56g3ETSI ETSI EN 301 357 V2.1.1 (2017-06) 7 Intellectual Property Rights IPRs essentia

34、l or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially

35、Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guaran

36、tee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electroma

37、gnetic compatibility and Radio spectrum Matters (ERM). The present document has been prepared under the Commissions standardisation request C(2015) 5376 final i.9 to provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation of the laws of th

38、e Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC i.1. Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with the normative clauses of the present document given in table

39、 A.1 and table A.2 confers, within the limits of the scope of the present document, a presumption of conformity with the corresponding essential requirements of that Directive and associated EFTA regulations. National transposition dates Date of adoption of this EN: 6 June 2017 Date of latest announ

40、cement of this EN (doa): 30 September 2017 Date of latest publication of new National Standard or endorsement of this EN (dop/e): 31 March 2018 Date of withdrawal of any conflicting National Standard (dow): 31 March 2019 Modal verbs terminology In the present document “shall“, “shall not“, “should“,

41、 “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. Introd

42、uction The present document applies to cordless audio devices in the range 25 MHz to 2 000 MHz. The present document contains requirements to demonstrate that radio equipment both effectively uses and supports the efficient use of radio spectrum in order to avoid harmful interference. ETSI ETSI EN 3

43、01 357 V2.1.1 (2017-06) 8 1 Scope The present document specifies technical characteristics and methods of measurements for cordless audio devices in the range 25 MHz to 2 000 MHz, including: cordless headphones; cordless loudspeakers; consumer radio microphones in the range 863 MHz to 865 MHz; in-ea

44、r monitoring equipment using either 300 kHz bandwidth analogue modulation or 300 kHz, 600 kHz, 1 200 kHz digital FDMA modulation in the range 863 MHz to 865 MHz; in-vehicle cordless; personal cordless; broadband multi channel audio systems; Band II LPD (low power devices) in the 87,5 MHz to 108 MHz

45、range (Broadcasting Band II) using up to 200 kHz bandwidth and analogue modulation; and other devices and frequency bands defined within CEPT/ERC/REC 70-03 i.2, European or National regulation. NOTE 1: The frequency bands for this equipment may differ from country to country as specified in their na

46、tional regulations. All equipment is intended to be used with integral antennas. Table 1: Radiocommunications service frequency bands Radiocommunications service frequency bands Transmit 25 MHz to 2 000 MHz Receive 25 MHz to 2 000 MHz g3NOTE 2: Cordless audio devices covered within the present docum

47、ent are considered, by definition, Short Range Devices (SRD), the power limits for different frequency bands can be found in the current version of CEPT/ERC/REC 70-03 i.2, annex 13 (or European or national regulations). NOTE 3: Electromagnetic Compatibility (EMC) requirements are covered by ETSI EN

48、301 489-9 i.4. 2 References 2.1 Normative references References are specific, identified by date of publication and/or edition number or version number. Only the cited version applies. Referenced documents which are not found to be publicly available in the expected location might be found at https:

49、/docbox.etsi.org/Reference/. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are necessary for the application of the present document. 1 Recommendation ITU-R BS.559-2 (1990): “Objective measurement of radio-frequency protection ratios in LF, MF and HF broadcasting“. ETSI ETSI EN 301 357 V2.1.1 (2017-06) 9 2 IEC 60244-13 (1991): “Methods of measurement for radio transmitters - Part 13: Performance characteristics for FM