1、 ETSI EN 301 357-1 V1.4.1 (2008-11)European Standard (Telecommunications series) Electromagnetic compatibilityand Radio spectrum Matters (ERM);Cordless audio devices in the range 25 MHz to 2 000 MHz;Part 1: Technical characteristics andtest methodsETSI ETSI EN 301 357-1 V1.4.1 (2008-11) 2 Reference
2、REN/ERM-TG17WG3-261-1 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
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6、No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2008. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTM, TIPHONTM, the TIPHON logo and the ETSI logo a
7、re Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI ETSI EN 301 357-1 V1.4.1 (2008-11) 3 Contents Intellectual Property Rights7 Foreword.7 Introduction 7 1 Scope 8 2 R
8、eferences 9 2.1 Normative references .9 2.2 Informative references9 3 Definitions, symbols and abbreviations .11 3.1 Definitions11 3.2 Symbols11 3.3 Abbreviations .12 4 Functional characteristics.12 4.1 Cordless audio 12 4.1.1 In-vehicle cordless 12 4.1.2 Personal cordless 12 4.1.3 Broadband multi c
9、hannel systems 12 4.1.4 Band II LPD13 4.2 Consumer radio microphones.13 4.3 In-ear monitoring13 5 General .13 5.1 Presentation of equipment for testing purposes13 5.1.1 Choice of model for performance testing .14 5.1.2 Definitions of alignment and switching ranges.14 5.1.3 Alignment Range 14 5.1.4 C
10、hoice of frequencies .14 5.1.4.1 Testing of single channel equipment.14 5.1.4.2 Testing of two channel equipment 14 5.1.4.3 Testing of multi-channel equipment (more than two channels) 14 5.1.5 Testing of equipment with an external frequency control.15 5.1.6 Testing of equipment with an integral ante
11、nna.15 5.1.6.1 Equipment with a permanent internal RF port 15 5.1.6.2 Equipment with a temporary RF port15 5.2 Mechanical and electrical design15 5.2.1 General15 5.2.2 Controls 15 5.2.3 Integral antenna 15 5.2.4 Marking 16 5.3 Interpretation of the measurement results 16 6 Test conditions, power sou
12、rces and ambient conditions 16 6.1 Normal and extreme test-conditions.16 6.2 Test power source.16 6.3 Normal test conditions16 6.3.1 Normal temperature and humidity17 6.3.2 Normal test power source voltage.17 6.3.2.1 Mains voltage17 6.3.2.2 Nickel-cadmium cells17 6.3.2.3 Other power sources17 6.4 Ex
13、treme test conditions 17 6.4.1 Extreme temperatures .17 6.4.1.1 Procedures for tests at extreme temperatures 17 6.4.2 Extreme test power source voltages18 6.4.2.1 Mains voltage18 ETSI ETSI EN 301 357-1 V1.4.1 (2008-11) 4 6.4.2.2 Re-chargeable battery power sources18 6.4.2.3 Power sources using other
14、 types of batteries.18 6.4.2.4 Other power sources18 7 General conditions18 7.1 Normal test modulation18 7.2 Test fixture .19 7.3 Test site and general arrangements for radiated measurements20 7.4 Modes of operation of the transmitter 20 7.5 Arrangement for test signals at the input of the transmitt
15、er .20 8 Methods of measurement and limits for transmitter parameters 20 8.1 Basic requirements for Band II LPD 20 8.2 Methods of measurement and limits for transmitter parameters of Band II LPD.21 8.2.1 Test site and general arrangements for radiated measurements21 8.2.2 Test modulation 21 8.2.3 Ef
16、fective radiated power (e.r.p.) .22 8.2.3.1 Definition 22 8.2.3.2 Test procedure.22 8.2.3.3 Limits 22 8.2.3.4 Measurement uncertainty22 8.2.4 Occupied bandwidth .22 8.2.4.1 Definition 22 8.2.4.2 Test procedure.23 8.2.4.3 Limits 23 8.2.4.4 Measurement uncertainty23 8.2.5 Frequency error.23 8.2.5.1 De
17、finition 23 8.2.5.2 Test procedure.23 8.2.5.3 Limits 24 8.2.5.4 Measurement uncertainty24 8.2.6 Transmitter timeout.24 8.2.6.1 Definitions.24 8.2.6.2 Test procedure.24 8.2.6.3 Limits 25 8.2.6.4 Measurement uncertainty25 8.2.7 Radiated spurious emissions.25 8.2.7.1 Definitions.25 8.2.7.2 Measurement
18、procedure25 8.2.7.3 Limits 25 8.2.7.3.1 Band II LPD 25 8.2.7.3.2 Combined equipments .25 8.2.7.4 Measurement uncertainty25 8.3 Frequency error 26 8.3.1 Definition26 8.3.2 Method of measurement .26 8.3.3 Limit .26 8.4 Carrier power26 8.4.1 Definition26 8.4.2 Method of measurement for equipment with i
19、ntegral antenna26 8.4.2.1 Method of measurement under normal test conditions .26 8.4.2.2 Method of measurement under extreme test conditions27 8.4.3 Limit .27 8.5 Channel bandwidth.28 8.5.1 Definition28 8.5.2 Measurement of Necessary Bandwidth (BN) .28 8.5.3 Limits28 8.5.4 Edge of Band Limits.28 8.6
20、 Spurious emissions and cabinet radiation.29 8.6.1 Definitions 30 8.6.2 Method of measuring the effective radiated power.30 8.6.3 Limits30 ETSI ETSI EN 301 357-1 V1.4.1 (2008-11) 5 8.6.4 Measuring receiver .30 8.7 Cordless audio transmitter shutoff31 8.7.1 Definition31 8.7.2 Method of measurement .3
21、1 8.7.3 Limits31 9 Receiver31 9.1 Spurious emissions and cabinet radiation.31 9.1.1 Definitions 31 9.1.2 Method of measuring the power level in a specified load.31 9.1.3 Method of measuring the effective radiated power of the enclosure 32 9.1.4 Method of measuring the effective radiated power.32 9.1
22、.5 Limits32 10 Measurement uncertainty .33 10.1 Compliance assessment when measurement uncertainty is equal to or less than maximum acceptable uncertainty33 10.2 Compliance assessment when measurement uncertainty is greater than maximum acceptable uncertainty 33 10.3 Maximum allowable measurement un
23、certainties for cordless audio and radio microphones.33 10.4 Maximum allowable measurement uncertainties for Band II LPD 34 Annex A (normative): Radiated measurement35 A.1 Test sites and general arrangements for measurements involving the use of radiated fields.35 A.1.1 Anechoic chamber35 A.1.2 Anec
24、hoic chamber with a conductive ground plane.36 A.1.3 Open Area Test Site (OATS) .37 A.1.4 Test antenna38 A.1.5 Substitution antenna .39 A.1.6 Measuring antenna .39 A.1.7 Stripline arrangement .39 A.1.7.1 General39 A.1.7.2 Description39 A.1.7.3 Calibration 39 A.1.7.4 Mode of use 39 A.2 Guidance on th
25、e use of radiation test sites .40 A.2.1 Verification of the test site .40 A.2.2 Preparation of the EUT.40 A.2.3 Power supplies to the EUT.40 A.2.4 Volume control setting for analogue speech tests 40 A.2.5 Range length.41 A.2.6 Site preparation 41 A.3 Coupling of signals.42 A.3.1 General .42 A.3.2 Da
26、ta Signals42 A.3.3 Speech and analogue signals 42 A.3.3.1 Acoustic coupler description.42 A.3.3.2 Calibration 43 A.4 Standard test position .43 A.5 Test fixture .43 A.5.1 Description .43 A.5.2 Calibration44 A.5.3 Mode of use45 Annex B (normative): Measurement of Necessary Bandwidth (BN) 46 Annex C (
27、normative): Receiver parameters47 C.1 Blocking or desensitization 47 C.1.1 Definition .47 C.1.2 Method of measurement.47 ETSI ETSI EN 301 357-1 V1.4.1 (2008-11) 6 C.1.2.1 Measurement procedure47 C.1.2.2 Definitions 47 C.1.2.3 Limits for applications below 1 GHz48 C.1.2.4 Limits for applications abov
28、e 1 GHz 48 C.2 Frequency mask for the receiver part.48 C.2.1 Definition .48 C.2.2 Method of measurement.48 C.2.3 Typical values for receivers49 C.2.3.1 Typical values for receivers with analogue modulation49 C.2.3.2 Typical values for receivers with digital modulation49 Annex D (informative): Deriva
29、tion of radiated spurious emissions limit for Band II LPD 50 Annex E (informative): Justifications for field strength measurement.51 Annex F (informative): Typical test layout52 F.1 Use of vehicle power leads.52 Annex G (informative): Bibliography.53 History 54 ETSI ETSI EN 301 357-1 V1.4.1 (2008-11
30、) 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 SR 000 314: “Intellectual Prop
31、erty 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:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, inc
32、luding 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 Standard (Telecommun
33、ications series) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio spectrum Matters (ERM). Consumer audio equipment intended for audio and voice operating below 50 MHz and using narrow band modulation are considered and tested according to EN 300 220 i.3. Consumer
34、 radio microphones and in ear monitoring equipment may be tested to either EN 300 422 i.4 for equipment with maximum occupied bandwidth 200 kHz with due consideration of power and operating frequency. Electromagnetic Compatibility (EMC) requirements are covered by EN 301 489-9 i.5. The present docum
35、ent is part 1 of a multi-part deliverable covering cordless audio devices in the range 25 MHz to 2 000 MHz; as identified below: Part 1: “Technical characteristics and test methods“; Part 2: “Harmonized EN covering essential requirements of article 3.2 of the R cordless loudspeakers; consumer radio
36、microphones in the range 863 MHz to 865 MHz; in-ear 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 L
37、PD (low power devices) in the 87,5 MHz to 108 MHz 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. The frequency bands for this equipment may differ from c
38、ountry to country as specified in their national regulations. All equipment is intended to be used with integral antennas. Annex A provides normative specifications concerning radiated measurements. Annex B provides the test configuration for the measurement of necessary bandwidth. Annex C provides
39、informative parameters on the receiver part, which are intended to give guidance to manufacturers. Annex D provides information on the derivation of radiated emissions limits for Band II LPD. Annex E provides a justification for field strength limits for Band II LPD. Annex F provides details of a ty
40、pical test layout for Band II LPD. Annex G contains the Bibliography. ETSI ETSI EN 301 357-1 V1.4.1 (2008-11) 9 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For a specific reference, subsequent revisions do n
41、ot apply. Non-specific reference may be made only to a complete document or a part thereof and only in the following cases: - if it is accepted that it will be possible to use all future changes of the referenced document for the purposes of the referring document; - for informative references. Refe
42、renced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. For online referenced documents, information sufficient to identify and locate the source shall be provided. Preferably, the primary source of the referenced docu
43、ment should be cited, in order to ensure traceability. Furthermore, the reference should, as far as possible, remain valid for the expected life of the document. The reference shall include the method of access to the referenced document and the full network address, with the same punctuation and us
44、e of upper case and lower case letters. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. 2.1 Normative references The following referenced documents are indispensable for the application of the present document.
45、For dated references, only the edition cited applies. For non-specific references, the latest edition of the referenced document (including any amendments) applies. 1 ITU-R Recommendation BS.559-2 (1990): “Objective measurement of radio-frequency protection ratios in LF, MF and HF broadcasting“. 2 I
46、EC 60244-13 (1991): “Methods of measurement for radio transmitters - Part 13: Performance characteristics for FM sound broadcasting“. 3 ETSI TR 102 273 (all parts) (2001): “Electromagnetic compatibility and Radio spectrum Matters (ERM); Improvement on Radiated Methods of Measurement (using test site
47、) and evaluation of the corresponding measurement uncertainties“. 4 ANSI C63.5 (2006): “American National Standard for Calibration of Antennas Used for Radiated Emission Measurements in Electro Magnetic Interference“. 5 IEC 60489-3 (1988): “Methods of measurement for radio equipment used in the mobi
48、le services. Part 3: Receivers for A3E or F3E emissions“. 2.2 Informative references The following referenced documents are not essential to the use of the present document but they assist the user with regard to a particular subject area. For non-specific references, the latest version of the refer
49、enced document (including any amendments) applies. i.1 Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual recognition of their conformity (R Short Range Devices (SRD); Radio equipment to be used in the 25 MHz to 1 000 MHz frequency range with power levels ranging up to 500 mW“. i.4 ETSI EN 300 422: “Electromagnetic compatibility and Radio spectrum Matters (ERM); Wireless microphones in the 25 MHz to 3 GHz frequency range“. i.5 ET
