ETSI EN 300 422-1-2015 Electromagnetic compatibility and Radio spectrum Matters (ERM) Wireless microphones in the 25 MHz to 3 GHz frequency range Part 1 Technical characteristics a.pdf

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1、 ETSI EN 300 422-1 V1.5.1 (2015-06) Electromagnetic compatibility and Radio spectrum Matters (ERM); Wireless microphones in the 25 MHz to 3 GHz frequency range; Part 1: Technical characteristics and methods of measurement EUROPEAN STANDARD ETSI ETSI EN 300 422-1 V1.5.1 (2015-06) 2 Reference REN/ERM-

2、TG17WG3-14 Keywords audio, 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 n

3、otice 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/or print versions of the present document shall not be modified without the prior written author

4、ization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present document should b

5、e aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following service

6、s: https:/portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall

7、 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 2015. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for

8、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. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI EN 300 422-1 V1.5.1 (2015-06) 3 Contents Intellectual Prop

9、erty Rights 7g3Foreword . 7g3Modal verbs terminology 7g3Introduction 8g31 Scope 9g32 References 10g32.1 Normative references . 10g32.2 Informative references 10g33 Definitions, symbols and abbreviations . 11g33.1 Definitions 11g33.2 Symbols 13g33.3 Abbreviations . 13g34 Functional characteristics fo

10、r Radio microphones . 14g34.1 Radio microphone descriptions 14g34.2 In ear monitoring 14g34.3 Tour Guide systems 14g35 General . 14g35.1 Presentation of equipment for testing purposes 14g35.1.1 Choice of model for testing 15g35.1.2 Definitions of alignment and switching ranges . 15g35.1.3 Choice of

11、frequencies . 15g35.1.4 Testing of single channel equipment 15g35.1.5 Testing of two channel equipment 15g35.1.6 Testing of multi-channel equipment (more than two channels) 16g35.1.7 Testing of equipment without a permanent external RF port 16g35.1.7.1 Equipment with a permanent internal RF port 16g

12、35.1.7.2 Equipment with a temporary RF port 16g35.2 Mechanical and electrical design 16g35.2.1 General 16g35.2.2 Controls 16g35.2.3 Performance testing with Integral antenna 16g35.2.4 Marking (equipment identification) 16g35.3 Interpretation of the measurement results 16g36 Test conditions, power so

13、urces and ambient conditions 17g36.1 Normal and extreme test-conditions . 17g36.2 Test power source . 17g36.3 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 sources 18g36.4 Extreme test c

14、onditions 18g36.4.1 Extreme temperatures . 18g36.4.1.1 Procedures for tests at extreme temperatures 18g36.4.2 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 Di

15、gital systems 19g37.2 Artificial antenna 20g3ETSI ETSI EN 300 422-1 V1.5.1 (2015-06) 4 7.3 Test fixture . 20g37.4 Test site and general arrangements for radiated measurements 20g37.5 Modes of operation of the transmitter 20g37.6 Arrangement for test signals at the input of the transmitter . 20g38 Me

16、thods of measurement and limits for transmitter parameters 21g38.1 Frequency stability . 21g38.1.1 Method of measurement (analogue) . 21g38.1.2 Method of measurement (digital) 21g38.1.3 Limit . 21g38.2 Rated output power 21g38.2.1 Method of measurement for equipment without integral antenna 21g38.2.

17、2 Method of measurement for equipment with integral antenna 21g38.2.2.1 Method of measurement under normal test conditions . 21g38.2.3 Limit . 22g38.3 Necessary bandwidth 22g38.3.1 Necessary Bandwidth (BN) for Analogue Systems 22g38.3.1.1 Method of Measurement . 22g38.3.1.2 Limits 23g38.3.2 Necessar

18、y Bandwidth (BN) for Digital Systems 23g38.3.2.1 Method of Measurement . 23g38.3.2.2 Limits 25g38.4 Spurious emissions . 26g38.4.1 Definition 26g38.4.2 Method of measurement . 26g38.4.3 Limits 26g38.4.4 Measuring receiver . 26g39 Receiver 27g39.1 Spurious emissions . 27g39.1.1 Definitions 27g39.1.2

19、Method of measuring the power level in a specified load. 27g39.1.3 Method of measuring the effective radiated power of the enclosure 27g39.1.4 Method of measuring the effective radiated power . 28g39.1.5 Limits 28g310 Functional characteristics for Assistive listening devices 28g310.1 Assistive List

20、ening Devices (Aids for the handicapped) 28g311 General . 29g311.1 Presentation of equipment for testing purposes 29g311.1.1 Choice of model for testing 30g311.1.2 Definitions of alignment and switching ranges . 30g311.1.3 Choice of frequencies . 30g311.1.4 Testing of single channel equipment 30g311

21、.1.5 Testing of two channel equipment 30g311.1.6 Testing of multi-channel equipment (more than two channels) 30g311.1.7 Testing of equipment without a permanent external RF port 30g311.1.7.1 Equipment with a permanent internal RF port 30g311.1.7.2 Equipment with a temporary RF port 31g311.2 Mechanic

22、al and electrical design 31g311.2.1 General 31g311.2.2 Controls 31g311.2.3 Performance testing with Integral antenna 31g311.2.4 Marking (equipment identification) 31g311.3 Interpretation of the measurement results 31g312 Test conditions, power sources and ambient conditions 31g312.1 Normal and extre

23、me test-conditions . 31g312.2 Test power source . 32g312.3 Normal test conditions 32g312.3.1 Normal temperature and humidity 32g312.3.2 Normal test power source voltage . 32g312.3.2.1 Mains voltage 32g3ETSI ETSI EN 300 422-1 V1.5.1 (2015-06) 5 12.3.2.2 Other power sources 32g312.4 Extreme test condi

24、tions 32g312.4.1 Extreme temperatures . 32g312.4.1.1 Procedures for tests at extreme temperatures 33g312.4.2 Extreme test power source voltages 33g312.4.2.1 Mains voltage 33g312.4.2.2 Other power sources 33g313 General conditions 33g313.1 Normal test modulation 33g313.1.1 Analogue systems . 33g313.1

25、.2 Digital systems 33g313.2 Artificial antenna 34g313.3 Test fixture . 34g313.4 Test site and general arrangements for radiated measurements 34g313.5 Modes of operation of the transmitter 34g313.6 Arrangement for test signals at the input of the transmitter . 35g314 Methods of measurement and limits

26、 for transmitter parameters 35g314.1 Frequency stability . 35g314.1.1 Method of measurement (analogue) . 35g314.1.2 Method of measurement (digital) 35g314.1.3 Limit . 35g314.2 Rated output power 35g314.2.1 Method of measurement for equipment without integral antenna 35g314.2.2 Method of measurement

27、for equipment with integral antenna 35g314.2.2.1 Method of measurement under normal test conditions . 35g314.2.3 Limit . 36g314.3 Necessary bandwidth 36g314.3.1 Necessary Bandwidth (BN) for Analogue Systems 36g314.3.1.1 Method of Measurement . 36g314.3.1.2 Limits 37g314.3.2 Necessary Bandwidth (BN)

28、for Digital Systems 38g314.3.2.1 Method of Measurement . 38g314.3.2.2 Limits 39g314.4 Spurious emissions . 39g314.4.1 Definition 39g314.4.2 Method of measurement . 39g314.4.3 Limits 39g314.4.4 Measuring receiver . 39g315 Receiver 40g315.1 Spurious emissions . 40g315.1.1 Definitions 40g315.1.2 Method

29、 of measuring the power level in a specified load. 40g315.1.3 Method of measuring the effective radiated power of the enclosure 40g315.1.4 Method of measuring the effective radiated power . 41g315.1.5 Limits 41g316 Measurement uncertainty . 41g3Annex A (normative): Radiated measurement 42g3A.1 Test

30、sites and general arrangements for measurements involving the use of radiated fields . 42g3A.1.1 Anechoic Chamber . 42g3A.1.2 Anechoic Chamber with a conductive ground plane 43g3A.1.3 Open Area Test Site (OATS) . 44g3A.1.4 Test antenna 45g3A.1.5 Substitution antenna . 45g3A.1.6 Measuring antenna . 4

31、6g3A.1.7 Stripline arrangement . 46g3A.1.7.1 General 46g3A.1.7.2 Description 46g3A.1.7.3 Calibration 46g3ETSI ETSI EN 300 422-1 V1.5.1 (2015-06) 6 A.1.7.4 Mode of use 46g3A.2 Guidance on the use of radiation test sites . 46g3A.2.1 Verification of the test site . 46g3A.2.2 Preparation of the EUT . 46

32、g3A.2.3 Power supplies to the EUT . 47g3A.2.4 Volume control setting for analogue speech tests 47g3A.2.5 Range length . 47g3A.2.6 Site preparation 48g3A.3 Coupling of signals . 48g3A.3.1 General . 48g3A.3.2 Data Signals 48g3A.3.3 Speech and analogue signals 48g3A.3.3.1 Acoustic coupler description.

33、48g3A.3.3.2 Calibration 49g3A.4 Standard test position . 49g3A.5 Test fixture . 50g3A.5.1 Description . 50g3A.5.2 Calibration 50g3A.5.3 Mode of use 51g3Annex B (normative): Measurement of Necessary Bandwidth (BN) for analogue systems 52g3Annex C (informative): Bibliography . 53g3History 54g3ETSI ETS

34、I EN 300 422-1 V1.5.1 (2015-06) 7 Intellectual Property Rights 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

35、SR 000 314: “Intellectual Property Rights (IPRs); Essential, 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 (http:/ipr.etsi.org). Pursuant to the ETSI IPR Policy, no inve

36、stigation, including IPR searches, has been carried out 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 European Standa

37、rd (EN) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio spectrum Matters (ERM). The present document has been updated in line with the advances in radio microphone technology in the digital field and the increased use of wireless applications for Assistive liste

38、ning Devices, also with changes generated within CEPT and the EC in the former ERMES band for aids for the handicapped. The present document is part 1 of a multi-part deliverable covering the Electromagnetic compatibility and Radio spectrum Matters (ERM); Wireless microphones in the 25 MHz to 3 GHz

39、frequency range, as identified below: Part 1: “Technical characteristics and methods of measurement“; Part 2: “Harmonized EN covering the essential requirements of article 3.2 of the R - an audio interface either by direct connection or by an acoustic coupler. In addition, the test fixture for integ

40、ral antenna equipment shall contain a radio frequency coupling device associated with an integral antenna equipment for coupling the integral antenna to an RF port at the working frequencies of the (EUT). This allows certain measurements to be performed using the conducted measurement methods. Only

41、relative measurements may be performed and only those at or near frequencies for which the test fixture has been calibrated. The performance characteristics of the test fixture shall be agreed upon with the test laboratory and shall conform to the following basic parameters: - the circuitry associat

42、ed with the RF coupling shall contain no active or non-linear devices; - the coupling loss shall not influence the measuring results; - the coupling loss shall be independent of the position of the test fixture and be unaffected by the proximity of surrounding objects or people; - the coupling loss

43、shall be reproducible when the EUT is removed and replaced; - the coupling loss shall remain substantially constant when the environmental conditions are varied. 7.4 Test site and general arrangements for radiated measurements For guidance on radiation test sites, see annex A. Detailed descriptions

44、of the radiated measurement arrangements are included in this annex. 7.5 Modes of operation of the transmitter For the purpose of the measurements according to the present document there should preferably be a facility to operate the transmitter in an unmodulated state. The method of achieving an un

45、modulated carrier frequency or special types of modulation patterns may also be decided by agreement between the manufacturer and the testing laboratory. It shall be described in the test report. It may involve suitable temporary internal modifications of the EUT. If it is not possible to provide an

46、 unmodulated carrier then this has to be stated in the test report. 7.6 Arrangement for test signals at the input of the transmitter For the purpose of the present document, the transmitter audio frequency modulation signal shall be supplied by a generator at the correct impedance applied at the con

47、nections of the stated audio input, unless otherwise stated. ETSI ETSI EN 300 422-1 V1.5.1 (2015-06) 21 8 Methods of measurement and limits for transmitter parameters 8.1 Frequency stability 8.1.1 Method of measurement (analogue) The carrier frequency shall be measured (in the absence of modulation)

48、 with the transmitter connected to an artificial antenna (see clause 7.2). A transmitter without an RF port may be placed in a test fixture (see clause 7.3) connected to an artificial antenna. The measurement shall be made under normal test conditions (see clause 6.3), and extreme test conditions (c

49、lauses 6.4.1 and 6.4.2 applied simultaneously). The measured value shall be compared with the nominal value. Radio microphones that also include an RF port for use with other external antennas shall be tested using this port. 8.1.2 Method of measurement (digital) In the case of transmitters that are capable of producing an unmodulated carrier, the measurement method in clause 8.1.1 can apply, alternatively, the mean of two frequency measurements taken at the same level on the upper and lower sides of the modulation envelope shall be taken as the measurement. In case of transmi