1、 ETSI EN 300 422-4 V2.1.1 (2017-05) Wireless Microphones; Audio PMSE up to 3 GHz; Part 4: Assistive Listening Devices including personal sound amplifiers and inductive systems up to 3 GHz; Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU HARMONISED EUROP
2、EAN STANDARD ETSI ETSI EN 300 422-4 V2.1.1 (2017-05) 2 Reference REN/ERM-TG17-25 Keywords audio, harmonised standard, PMSE, 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
3、 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and
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7、ying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2017
8、. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE 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
9、 its Members GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI EN 300 422-4 V2.1.1 (2017-05) 3 Contents Intellectual Property Rights 6g3Foreword . 6g3Modal verbs terminology 7g3Executive summary 7g3Introduction 7g31 Scope 8g32 References 8g32.1 Normative ref
10、erences . 8g32.2 Informative references 8g33 Definitions, symbols and abbreviations . 10g33.1 Definitions 10g33.2 Symbols 12g33.3 Abbreviations . 13g34 General equipment requirements 14g34.1 Environmental profile . 14g34.2 Mechanical and electrical design 14g34.2.1 General 14g34.2.2 Physical Control
11、s 14g34.2.3 Performance testing with integral antenna 14g35 Presentation of equipment for testing purposes 14g35.1 Introduction 14g35.2 Choice of model for testing 15g35.3 Definitions of alignment and switching ranges 15g35.4 Choice of frequencies . 15g35.5 Testing of single channel equipment 15g35.
12、6 Testing of two channel equipment . 16g35.7 Testing of multi-channel equipment (more than two channels) . 16g35.8 Testing of equipment without a permanent external RF port . 16g35.8.1 General 16g35.8.2 Equipment with a permanent internal RF port 16g35.8.3 Equipment with a temporary RF port . 16g36
13、Test conditions, power sources and ambient conditions 16g36.1 Normal and extreme test conditions . 16g36.2 Test power source . 16g36.3 Normal test conditions 17g36.3.1 Normal temperature and humidity 17g36.3.2 Normal test power source voltage . 17g36.3.2.1 Mains voltage 17g36.3.2.2 Other power sourc
14、es 17g36.4 Extreme test conditions 17g36.4.1 Extreme temperatures . 17g36.4.2 Extreme test power source voltages 18g36.4.2.1 Mains voltage 18g36.4.2.2 Other power sources 18g37 General conditions 18g37.1 Normal test modulation 18g37.1.1 Analogue systems . 18g37.1.2 Digital systems 18g37.1.3 Inductiv
15、e Receivers. 19g37.2 Artificial antenna 19g37.3 Test fixture . 19g3ETSI ETSI EN 300 422-4 V2.1.1 (2017-05) 4 7.4 Test site and general arrangements for radiated measurements 19g37.5 Modes of operation of the transmitter 20g37.6 Arrangement for test signals at the input of the transmitter . 20g38 Tra
16、nsmitter technical requirements and corresponding methods for compliance testing 20g38.1 Frequency stability . 20g38.1.1 Method of measurement (analogue) . 20g38.1.2 Method of measurement (digital) 20g38.1.3 Limit . 20g38.2 Rated output power 20g38.2.1 Method of measurement for equipment without int
17、egral antenna 20g38.2.2 Method of measurement for equipment with integral antenna 21g38.2.2.1 Method of measurement under normal test conditions . 21g38.2.3 Limit . 21g38.3 Necessary bandwidth 22g38.3.1 Necessary Bandwidth (BN) for Analogue Systems 22g38.3.1.1 Method of Measurement . 22g38.3.1.2 Lim
18、its 23g38.3.2 Necessary Bandwidth (BN) for Digital Systems 24g38.3.2.1 Method of Measurement . 24g38.3.2.2 Limits 24g38.3.3 Occupied Bandwidth for Digital Systems: Alternative Measurement Procedure . 24g38.3.3.1 Applicability . 24g38.3.3.2 Definition 24g38.3.3.3 Limits 24g38.3.3.4 Conformance . 25g3
19、8.3.3.4.1 Test conditions 25g38.3.3.4.2 Test method . 25g38.3.4 Transmitter Unwanted Emissions in the Out-of-band Domain: Alternative Measurement Procedure . 26g38.3.4.1 Applicability . 26g38.3.4.2 Definition 26g38.3.4.3 Limit 26g38.3.4.4 Conformance . 26g38.3.4.4.1 Test conditions 26g38.3.4.4.2 Tes
20、t method . 27g38.4 Spurious emissions . 28g38.4.1 Definition 28g38.4.2 Method of measurement . 28g38.4.3 Limits 29g39 Receiver technical requirements and corresponding methods for compliance testing . 29g39.1 Analogue and Digital Receivers . 29g39.1.1 Spurious Emissions . 29g39.1.1.1 Definition 29g3
21、9.1.1.2 Method of measuring the power level in a specified load . 30g39.1.1.3 Method of measuring the effective radiated power of the enclosure . 30g39.1.1.4 Method of measuring the effective radiated power . 30g39.1.1.5 Limits 31g39.1.2 Receiver Blocking 31g39.1.2.1 Applicability 31g39.1.2.2 Defini
22、tion 31g39.1.2.3 Method of Measurement . 31g39.1.2.3.1 Test conditions 31g39.1.2.3.2 Test Method . 32g39.1.2.4 Limits 34g39.1.2.4.1 Digital Systems 34g39.1.2.4.2 Analogue Systems . 34g39.1.3 Receiver Sensitivity 34g39.1.3.1 Definition 34g39.1.3.2 Method of Measurement . 35g39.1.3.3 Limits 35g39.2 In
23、ductive Receivers 35g3ETSI ETSI EN 300 422-4 V2.1.1 (2017-05) 5 9.2.1 Applicability . 35g39.2.2 Receiver Sensitivity 35g310 Measurement uncertainty and interpretation of the measurement results 35g3Annex A (informative): Relationship between the present document and the essential requirements of Dir
24、ective 2014/53/EU . 37g3Annex B (normative): Measurement of Necessary Bandwidth (B) for analogue systems . 39g3B.1 Test configuration for measurement of the Necessary Bandwidth (B) for analogue systems 39g3Annex C (normative): Radiated measurement 40g3C.1 Test sites and general arrangements for meas
25、urements involving the use of radiated fields . 40g3C.1.1 General . 40g3C.1.2 Anechoic chamber 40g3C.1.3 Anechoic chamber with a conductive ground plane . 41g3C.1.4 Open Area Test Site (OATS) . 42g3C.1.5 Test antenna 43g3C.1.6 Substitution antenna . 43g3C.1.7 Measuring antenna . 44g3C.1.8 Stripline
26、arrangement . 44g3C.1.8.1 General 44g3C.1.8.2 Description 44g3C.1.8.3 Calibration 44g3C.1.8.4 Mode of use 44g3C.2 Guidance on the use of radiation test sites . 44g3C.2.1 General . 44g3C.2.2 Verification of the test site . 44g3C.2.3 Preparation of the DUT 45g3C.2.4 Power supplies to the DUT. 45g3C.2.
27、5 Volume control setting for analogue speech tests 45g3C.2.6 Range length . 45g3C.2.7 Site preparation 46g3C.3 Coupling of signals . 46g3C.3.1 General . 46g3C.3.2 Data signals 46g3C.3.3 Speech and analogue signals 47g3C.3.3.0 General 47g3C.3.3.1 Acoustic coupler description. 47g3C.3.3.2 Calibration
28、47g3C.4 Standard test position . 47g3C.5 Test fixture . 48g3C.5.1 General . 48g3C.5.2 Description . 48g3C.5.3 Calibration 49g3C.5.4 Mode of use 49g3Annex D (informative): Additional receiver parameters identified under article 3.2 of Directive 2014/53/EU 50g3Annex E (informative): Installation test
29、procedure for ALDs in the 173,965 MHz to 216 MHz band . 52g3Annex F (informative): Bibliography . 53g3Annex G (informative): Technical description of Assisted Listening Devices 54g3Annex H (informative): Change History 55g3History 56g3ETSI ETSI EN 300 422-4 V2.1.1 (2017-05) 6 Intellectual Property R
30、ights IPRs essential 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); Essenti
31、al, or potentially 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
32、 by ETSI. No guarantee 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
33、Committee Electromagnetic compatibility and Radio spectrum Matters (ERM). The present document has been prepared under the Commissions standardisation request C(2015) 5376 final i.18 to provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisati
34、on of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC i.14. 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 do
35、cument given in table A.1 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. The present document is part 4 of a multi-part deliverable covering Wireless Microph
36、ones, Audio PMSE up to 3 GHz, as identified below: Part 1: “Class A Receivers; Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU“; Part 2: “Class B Receivers; Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU“;
37、 Part 3: “Class C Receivers; Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU“; Part 4: “Assistive Listening Devices including personal sound amplifiers and inductive systems up to 3 GHz; Harmonised Standard covering the essential requirements of article
38、 3.2 of Directive 2014/53/EU“. National transposition dates Date of adoption of this EN: 25 April 2017 Date of latest announcement of this EN (doa): 31 July 2017 Date of latest publication of new National Standard or endorsement of this EN (dop/e): 31 January 2018 Date of withdrawal of any conflicti
39、ng National Standard (dow): 31 January 2019 ETSI ETSI EN 300 422-4 V2.1.1 (2017-05) 7 Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI D
40、rafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. Executive summary With the introduction of Directive 2014/53/EU i.14, the present multi-part deliverable has been reformatted into multiple p
41、arts to accommodate the different types of equipment represented, i.e. different receivers for audio Programme Making and Special Events (PMSE); and Assistive Listening Devices (ALDs). Part 4 covers Assistive Listening Devices including personal sound amplifiers and inductive systems with digital an
42、d analogue (FM) receivers. It is also applicable to accessories associated with ALDs. In addition, it covers ALDs with inductive receivers (T-coils). Introduction With the introduction of Directive 2014/53/EU i.14, receiver parameters are now included and the removal of the 9 kHz lower limit has bro
43、ught inductive loop systems and receivers into the present document. Inductive loop transmitters are covered within ETSI EN 303 348 i.19 along with test receivers; hearing aids containing inductive loop receivers (often referred to as T coil) are now covered in clause 9.2 of the present document. Th
44、e frequency range of the present document has been reduced to accommodate inductive loop receivers. The present document is a testing standard based on spectrum utilization parameters and does not include performance characteristics that may be required by the user nor requirements for interfacing e
45、quipment. ETSI EN 300 422 i.2 was originated in 1991 when Assistive Listening Devices (ALD) were a very small part of the Radio Microphone Industry; in recent years major advances in both the volume and functionality of ALDs has caused a rethink in how to best present the testing regime in a clear a
46、nd concise manner. After a number of discussions, the present ETSI EN 300 422 family i.2 covers audio PMSE as Parts 1 i.20, 2 i.21, and 3 i.22; and ALDs as Part 4 (the present document). Systems including assistive listening devices (Aids for the handicapped) with digital modulations and operating i
47、n the range 863 MHz to 865 MHz may be tested to either the present document or to ETSI EN 301 357 i.1 with due consideration of power and operating frequency. Ear worn hearing assistance devices may in some cases require stereo transmission to present both left and right audio information to the wea
48、rer. For that reason, devices that transmit information to the hearing impaired may require two channel operation. It is expected that two or more channel devices will be tested separately when determining bandwidth and associated measurements. Channels may involve the use of two separate frequencie
49、s or wider bandwidth. Additional standards or specifications may be required for equipment: 1) intended to interface to Public Networks, e.g. PSTN. This facility may be subjected to regulatory conditions; or 2) other relevant radio standards. ETSI ETSI EN 300 422-4 V2.1.1 (2017-05) 8 1 Scope The present document specifies technical characteristics and methods of measurements for Assistive Listening Devices (ALDs) comprising personal hearing aid systems including inductive systems, personal sound amplifiers, and associated accessories for ALDs, e.g. remot
