ETSI EN 301 489-9 V1.3.1 (2002-08)
Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 9: Specific conditions for wireless microphones, similar Radio Frequency (RF) audio link equipment, cordless audio and in-ear monitoring devices
Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 9: Specific conditions for wireless microphones, similar Radio Frequency (RF) audio link equipment, cordless audio and in-ear monitoring devices
REN/ERM-EMC-230-9
Elektromagnetna združljivost (EMC) in zadeve v zvezi z radijskim spektrom (ERM) - Standard elektromagnetne združljivosti (EMC) za radijsko opremo in storitve - 9. del: Posebni pogoji za brezžične mikrofone, podobno opremo za radiofrekvenčne (RF) zvokovne povezave, brezvrvične avdio in ušesne slušne naprave
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.LRIUHNYHQþQHHElectromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 9: Specific conditions for wireless microphones, similar Radio Frequency (RF) audio link equipment, cordless audio and in-ear monitoring devices33.160.50PriborAccessories33.100.01Elektromagnetna združljivost na splošnoElectromagnetic compatibility in general33.060.01Radijske komunikacije na splošnoRadiocommunications in generalICS:Ta slovenski standard je istoveten z:EN 301 489-9 Version 1.3.1SIST EN 301 489-9 V1.3.1:2003en01-marec-2003SIST EN 301 489-9 V1.3.1:2003SLOVENSKI
STANDARD
SIST EN 301 489-9 V1.3.1:2003
ETSI EN 301 489-9 V1.3.1 (2002-08)Candidate Harmonized European Standard (Telecommunications series) Electromagnetic compatibilityand Radio spectrum Matters (ERM);ElectroMagnetic Compatibility (EMC)standard for radio equipment and services;Part 9: Specific conditions for wireless microphones,similar Radio Frequency (RF) audio link equipment,cordless audio and in-ear monitoring devices
SIST EN 301 489-9 V1.3.1:2003
ETSI ETSI EN 301 489-9 V1.3.1 (2002-08) 2
Reference REN/ERM-EMC-230-9 Keywords audio, digital, EMC, radio, radio mic, regulation ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
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Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be 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, send your comment to: editor@etsi.fr Copyright Notification 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 2002. All rights reserved.
DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTM and the TIPHON logo are Trade Marks currently being registered by ETSI 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. SIST EN 301 489-9 V1.3.1:2003
ETSI ETSI EN 301 489-9 V1.3.1 (2002-08) 3
Contents Intellectual Property Rights.5 Foreword.5 1 Scope.6 2 References.6 3 Definitions and abbreviations.7 3.1 Definitions.7 3.2 Abbreviations.7 4 Test conditions.8 4.1 General.8 4.2 Arrangements for test signals.8 4.2.1 Arrangements for test signals at the input of transmitters.8 4.2.2 Arrangements for test signals at the output of transmitters.9 4.2.3 Arrangements for test signals at the input of receivers.9 4.2.4 Arrangements for test signals at the output of receivers.11 4.2.5 Arrangements for testing transmitter and receiver together (as a system).11 4.3 Exclusion bands.11 4.3.1 Receiver and receivers of transceivers exclusion band.11 4.3.2 Transmitter exclusion band.11 4.4 Narrow band responses of receivers.12 4.5 Normal test modulation.12 4.5.1 Transmitters.12 4.5.2 Receivers.12 5 Performance assessment.12 5.1 General.12 5.2 Equipment which can provide a continuous communications link.13 5.3 Equipment which does not provide a continuous communications link.13 5.4 Ancillary equipment.13 5.5 Equipment classification.13 6 Performance criteria.13 6.1 General performance criteria.14 6.2 Performance criteria for equipment which provides a continuous communication link.14 6.2.1 Performance criteria for Continuous phenomena applied to Transmitters (CT) and Receivers (CR).14 6.2.2 Performance criteria for Transient phenomena applied to Transmitters (TT) and Receivers (TR).15 6.3 Performance criteria for equipment which does not provide a continuous communication link.15 6.4 Performance criteria for ancillary equipment tested on a stand alone basis.16 7 Applicability overview.16 7.1 Emission.16 7.1.1 General.16 7.1.2 Special conditions.16 7.2 Immunity.16 7.2.1 General.16 7.2.2 Special conditions.16 Annex A (informative): Examples of wireless microphones, cordless audio, in-ear monitoring and similar RF audio link equipment within the scope of the present document.17 A.1 Wireless radio microphone equipment.17 A.2 Cordless audio equipment.17 A.3 RF audio link equipment covered within the scope of the present document.18 SIST EN 301 489-9 V1.3.1:2003
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Annex B (normative): Acoustic stimulation of wireless radio microphones and similar radio communications link equipment, conditions for the test set up and configuration.19 B.1 General.19 B.2 Audio excitation.19 History.20
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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 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://webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, 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 Candidate Harmonized European Standard (Telecommunications series) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio spectrum Matters (ERM). The present document has been produced by ETSI in response to a mandate from the European Commission issued under Council Directive 98/34/EC [4] (as amended) laying down a procedure for the provision of information in the field of technical standards and regulations. The present document is intended to become a Harmonized Standard, the reference of which will be published in the Official Journal of the European Communities referencing the Council Directive on the approximation of the laws of the Member States relating to electromagnetic compatibility ("the EMC Directive") (89/336/EEC [3] as amended) and 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 ("the R&TTE Directive" [2]). The present document is part 2 of a multi-part deliverable. Full details of the entire series can be found in part 1 [1].
National transposition dates Date of adoption of this EN: 9 August 2002 Date of latest announcement of this EN (doa): 30 November 2002 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
31 May 2003 Date of withdrawal of any conflicting National Standard (dow): 31 May 2004
SIST EN 301 489-9 V1.3.1:2003
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1 Scope The present document, together with EN 301 489-1 [1], covers the assessment of wireless microphones, similar RF audio link equipment, cordless audio and in-ear monitoring, intended for the transmission of music and speech, and associated ancillary equipment, in respect of ElectroMagnetic Compatibility (EMC). Technical specifications related to the antenna port and emissions from the enclosure port of wireless microphones, similar RF audio link equipment, cordless audio and in-ear monitoring are not included in the present document. Such technical specifications are found in the relevant product standards for the effective use of the radio spectrum. The present document specifies the applicable EMC tests, the test methods, the limits and the performance criteria for wireless microphones, similar RF audio link equipment, cordless audio, in-ear monitoring and associated ancillary equipment. This equipment can use analogue or digital modulation techniques. Examples of equipment types covered by the present document are given in annex A. Other types of transmitters or receivers, which are intended for combined use, with either wireless radio microphones, RF audio link equipment, cordless audio and in-ear monitoring shall be tested to their appropriate EMC standard. Low quality speech applications as toy microphone, babyphones etc. operating at frequencies below 50 MHz, occupied bandwidth < 25 kHz and operating according CEPT ERC/REC 70-03 [9], annex 1 are excluded from the present document and have to be tested according to EN 301 489-3 [10]. In case of differences (for instance concerning special conditions, definitions, abbreviations) between the present document and EN 301 489-1 [1], the provisions of the present document take precedence. The environmental classification and the emission and immunity requirements used in the present document are as stated in EN 301 489-1 [1], except for any special conditions included in the present document. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. • 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 not apply. • For a non-specific reference, the latest version applies. [1] ETSI EN 301 489-1: "Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services;
Part 1: Common technical requirements". [2] 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&TTE Directive). [3] Council Directive 89/336/EEC of 3 May 1989 on the approximation of the laws of the Member States relating to electromagnetic compatibility (EMC Directive). [4] Directive 98/34/EC of the European Parliament and of the Council of 22 June 1998 laying down a procedure for the provision of information in the field of technical standards and regulations. [5] ETSI EN 300 422-1: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Wireless microphones in the 25 MHz to 3 GHz frequency range; Part 1: Technical characteristics and test methods". [6] ETSI EN 300 454-1: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Wide band audio links; Part 1: Technical characteristics and test methods". SIST EN 301 489-9 V1.3.1:2003
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[7] ETSI EN 301 357-1: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Cordless audio devices in the range 25 MHz to 2 000 MHz; Consumer radio microphones and
in-ear monitoring systems operating in the CEPT harmonized band 863 MHz to 865 MHz;
Part 1: Technical characteristics and test methods". [8] ETSI EN 301 840-1: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Digital radio microphones operating in the CEPT Harmonized band 1 785 MHz to 1 800 MHz;
Part 1: Technical characteristics and methods of measurement". [9] CEPT ERC/REC 70-03: "Relating to the use of Short Range Devices (SRD)". [10] ETSI EN 301 489-3: "Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 3: Specific conditions for Short-Range Devices (SRD) operating on frequencies between 9 kHz and 40 GHz". 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in EN 301 489-1 [1], clause 3 and the following apply: companding: method of audio processing that compresses the audio dynamic range before transmission and then provides matching expansion of the signal in the receiver NOTE: The method is used to improve the audio performance in the RF link. integral antenna: antenna designed to be connected to the equipment without the use of a 50
external connector and considered to be part of the equipment NOTE: An integral antenna may be fitted internally or externally to the equipment. switching range: maximum frequency range over which the receiver or transmitter can be operated without reprogramming or realignment vehicle battery: battery used for the primary operation of the vehicle, i.e. the ignition or starting of the vehicle 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: CR Continuous phenomena applied to Receivers CT Continuous phenomena applied to Transmitters EMC ElectroMagnetic Compatibility erp effective radiated power EUT Equipment Under Test PMR Professional Mobile Radio RF Radio Frequency SINAD Ratio of (Signal + Noise + Distortion) to (Noise + Distortion) TR Transient phenomena applied to Receivers TT Transient phenomena applied to Transmitters SIST EN 301 489-9 V1.3.1:2003
ETSI ETSI EN 301 489-9 V1.3.1 (2002-08) 8
4 Test conditions For the purposes of the present document, the test conditions of EN 301 489-1 [1], clause 4 shall apply as appropriate. Further product related test conditions for wireless microphones, similar RF audio link equipment, cordless audio, in-ear monitoring equipment and ancillary equipment are specified in the present document. 4.1 General For emission and immunity tests the test modulation, test arrangements, etc., as specified in the present document, clauses 4.1 to 4.5 shall apply. For the purpose of EMC tests, body worn or hand held transmitters shall be mounted on a non-conductive stand at least 0,8 m from any conducting surface. The EUT and any other equipment required for the performance assessment before, during, and after the conclusion of the tests, shall be connected in a manner typical of normal intended use. Whenever the EUT is provided with a detachable antenna, it shall be tested with the antenna fitted in a manner typical of normal intended use. For immunity tests, if the equipment is of a category which permits it, a communications link shall be established at the start of the test and maintained during the test.
The test conditions shall be as follows: - the transmitter shall be operated at its normal maximum RF output power modulated with a suitable modulation signal (see clause 4.5.1); - for stand alone receivers or receivers of transceivers operating in simplex mode, the wanted RF input signal, coupled to the receiver, shall be modulated with a suitable modulation signal (see clause 4.5.2); - for duplex transceivers, the wanted RF input signal, coupled to the receiver, shall be modulated with a suitable modulation signal (see clause 4.5.2). The transmitter shall be operated at its normal maximum output power, modulated with the test modulation signal, coupled to the transmitter from the output of the receiver (repeater mode); - digitally modulated systems shall use a defined interface to convert between analogue and digital domain (and vice versa). 4.2 Arrangements for test signals The provisions of EN 301 489-1 [1], clause 4.2 shall apply. 4.2.1 Arrangements for test signals at the input of transmitters The provisions of EN 301 489-1 [1], clause 4.2.1 shall apply with the following modifications. For transmitters designed to operate from an integral or dedicated microphone (see figure 2) it shall be permissible to use an acoustic coupling device to inject the normal test modulation signal (see figure 3). The acoustic coupling device may be provided by the manufacturer. For equipment which can use a variety of audio capsules, the manufacturer shall declare the type of capsule, e.g. dynamic, electret, or condenser, to be provided with the system. Only one type of capsule shall be tested. All other capsules shall be deemed as compliant. The transmitter shall be tested at its most sensitive input with the test capsule. For equipment not designed to use an integral or dedicated microphone, the test signal shall be fed in electrical form to the most sensitive input socket (see figure 1) using maximum length cables as normally supplied by the manufacturer with the equipment. The modulation signal used for the tests shall be a 1 kHz sine wave tone at a level declared by the manufacturer to obtain 100 % audio modulation. SIST EN 301 489-9 V1.3.1:2003
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The manufacturer may provide a suitable companion receiver that can be used to set up a communications link. In this case a suitable attenuator in the companion receiver input may be necessary, see annex B for further details. In the case of systems with a digital audio input and outputs this test signal has to be presented via a suitable test fixture converting the analogue signal to the digital domain and vice-versa. The applicant shall provide details on the interface and test fixture used for the test. 4.2.2 Arrangements for test signals at the output of transmitters The provisions of EN 301 489-1 [1], clause 4.2.2 shall apply. 4.2.3 Arrangements for test signals at the input of receivers The provisions of EN 301 489-1 [1], clause 4.2.3 shall apply with the following modifications. The wanted RF input signal to the receiver should be modulated with a suitable signal corresponding to 100 % audio modulation (maximum channel loading). If it is not appropriate to provide a modulated RF signal to the receiver, the test may be performed using an unmodulated wanted RF input signal. The level and make up of the wanted RF input signal shall be declared by the manufacturer. The level chosen shall be set to a value 60 dB above the threshold sensitivity of the receiver. Other systems than analogue radio microphones can define another level more in line with the application. The level used shall be recorded in the test report. The manufacturer may provide a suitable companion transmitter that can be used to set up a communications link. In this case a suitable attenuator in the EUT input may be necessary. RF input Audio output Receiver Audio test equipment Absorber lined test chamber Audio
input Output Interfering signal Wanted signal EUT
Generator
Figure 1: Test configuration for integral antenna; transmitter operation - electrical input SIST EN 301 489-9 V1.3.1:2003
ETSI ETSI EN 301 489-9 V1.3.1 (2002-08) 10 RF input Audio output Receiver Audio test equipment Absorber lined test chamber Audio
input Output Interfering signal Wanted signal EUT Transducer Acoustic tube (see figure 3) Generator
Figure 2: Test configuration for integral antenna; transmitter operation - acoustic input Acoustic tubeSuggested minimum length 1 mFunnels (optional)E.U.T.TransducerPoweramplifier(optional)Audiosignalgenerator Figure 3: Example of acoustic coupling jig RF output Audio input Audio test equipment Absorber lined test chamber Audio Input output Interfering signal Wanted signal EUT RF generator
Generator
NOTE: The RF generator may be a companion transmitter sited inside the test chamber if necessary.
Figure 4: Test configuration for integral antenna; receiver operation SIST EN 301 489-9 V1.3.1:2003
ETSI ETSI EN 301 489-9 V1.3.1 (2002-08) 11 4.2.4 Arrangements for test signals at the output of receivers The provisions of EN 301 489-1 [1], clause 4.2.4 shall apply with the following modification. The audio frequency output of the equipment shall be suitably coupled to the SINAD measuring system outside of the test environment. The characteristics of the SINAD measuring system shall be such that the upper -3 dB frequency of its detector part is to exceed 16 kHz, and its electrical measurement flatness error between 40 Hz and 16 kHz is not to exceed ±2 dB. The coupling means actually used shall be recorded in the test report. In the case of systems with a digital audio output a suitable test fixture to convert from digital to analogue signals shall be defined by the applicant. The applicant shall provide details on the interface and test fixture used for the test. The interface shall be capable to meet the above specifications. 4.2.5 Arrangements for testing transmitter and receiver together (as a system) The provisions of EN 301 489-1 [1], clause 4.2.5 shall apply. In case of digitally modulated systems, the applicant shall define suitable test fixtures for converting from the analogue to the digital domain and vice versa. This definition shall be included in the test report. 4.3 Exclusion bands The provisions of EN 301 489-1 [1], clause 4.3 shall apply. 4.3.1 Receiver and receivers of transceivers exclusion band The exclusion band for receivers and receivers of transceivers is the frequency range determined by the switching range, as declared by the manufacturer, extended as follows: 1) Category 1 and 2 equipment (as defined in clause 6): - the lower frequency of the exclusion band is the lower frequency of the switching range, minus 5 % of the centre frequency of the switching range; - the upper frequency of the exclusion band is the upper frequency of the switching range, plus 5 % of the centre frequency of the switching range. 2) Category 3 equipment (as defined in clause 6): - the lower frequency of the exclusion band is the lower frequency of the switching range, minus 5 % of the centre frequency of the switching range, or minus 10 MHz, whichever will result in the lowest frequency; - the upper frequency of the exclusion band is the upper frequency of the switching range, plus 5 % of the centre frequency of the switching range, or plus 10 MHz, whichever will result in the highest frequency. The manufacturer shall state the category of equipment on the documentation accompanying the product, and shall declare the category to the test house in the form of a manufacturer's declaration. 4.3.2 Transmitter exclusion band The lower frequency of the exclusion band is the lower frequency of the switching range, minus 5 % of the centre frequency of the switching range. The upper frequency of the exclusion band is the upper frequency of the switching range, plus 5 % of the centre frequency of the switching range. SIST EN 301 489-9 V1.3.1:2003
ETSI ETSI EN 301 489-9 V1.3.1 (2002-08) 12 4.4 Narrow band responses of receivers The provision of EN 301 489-1 [1], clause 4.4 shall apply. The identification criterion for narrow band responses of the EUT is a reduction of the observed SINAD level of the audio output below the relevant category limit set out in table 2, see clause 6.2. The nominal frequency offset used for the identification of narrowband responses shall be twice the bandwidth of the receiver IF filter immediately preceding the demodulator, as declared by the manufacturer, for the first part of the identification procedure, and two and one half times the bandwidth of the receiver for its second part. For digital systems the narrowband response shall be limited to less than 3 times the declared bandwidth (B) of the system. See EN 300 422-1 [5], EN 300 454-1 [6], EN 301 357-1 [7] and EN 301 840-1 [8]. 4.5 Normal test modulation 4.5.1 Transmitters The transmitter shall be modulated with a sinusoidal audio frequency signal of 1 000 Hz, provided either by a suitable acoustic coupling means or by a shielded transmission line (e.g. a coaxial cable). The level of this audio signal shall be adjusted corresponding to 100 % audio modulation (maximum channel loading) of the wanted RF carrier. For digitally modulated systems the applicant shall specify the modulation method and its parameters and provide a suitable test fixture to allow for testing similar to 100 % audio modulation level. 4.5.2 Receivers The receivers wanted RF inpu
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