1、 ETSI EN 302 245 V2.1.1 (2018-06) Transmitting equipment for the Digital Radio Mondiale (DRM) sound broadcasting service; Harmonised Standard for access to radio spectrum HARMONISED EUROPEAN STANDARD ETSI ETSI EN 302 245 V2.1.1 (2018-06) 2 Reference REN/ERM-TG17-17 Keywords audio, broadcasting, digi
2、tal, DRM, harmonised standard, radio, terrestrial, transmitter 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 I
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9、 3 Contents Intellectual Property Rights 5g3Foreword . 5g3Modal verbs terminology 5g3Introduction 6g31 Scope 7g32 References 7g32.1 Normative references . 7g32.2 Informative references 7g33 Definitions, symbols and abbreviations . 8g33.1 Definitions 8g33.2 Symbols 9g33.3 Abbreviations . 9g34 Technic
10、al requirements specifications . 10g34.1 Environmental profile . 10g34.2 Conformance requirements 10g34.2.1 Rated output power . 10g34.2.1.1 Definition 10g34.2.1.2 Limit 10g34.2.1.3 Conformance . 10g34.2.2 Frequency stability 10g34.2.2.1 Definition 10g34.2.2.2 Limit 10g34.2.2.2.1 DRM transmitters op
11、erating below 30 MHz . 10g34.2.2.2.2 DRM transmitters operating between 30 MHz and 300 MHz . 10g34.2.2.3 Conformance . 10g34.2.3 Spurious emissions . 11g34.2.3.1 Definition 11g34.2.3.2 Limit 11g34.2.3.2.1 DRM transmitters operating below 30 MHz . 11g34.2.3.2.2 DRM transmitters operating between 30 M
12、Hz and 300 MHz . 12g34.2.3.3 Conformance . 12g34.2.4 Transmitter muting during frequency shift . 13g34.2.4.1 Definition 13g34.2.4.2 Limits 13g34.2.4.3 Conformance . 13g34.2.5 Out-of-band emissions 13g34.2.5.1 Definition 13g34.2.5.2 Limit 13g34.2.5.2.1 DRM transmitters operating below 30 MHz . 13g34.
13、2.5.2.2 DRM transmitters operating between 30 MHz and 300 MHz . 15g34.2.5.3 Conformance . 16g34.2.6 Modulation Error Ratio (MER) 16g34.2.6.1 Definition 16g34.2.6.2 Limit 16g34.2.6.2.1 DRM transmitters operating below 30 MHz . 16g34.2.6.2.2 DRM transmitters operating between 30 MHz and 300 MHz . 16g3
14、4.2.6.3 Conformance . 16g35 Testing for compliance with technical requirements 17g35.1 Environmental conditions for testing . 17g35.2 Interpretation of the measurement results 17g35.3 Methods of measurement . 17g35.3.1 Rated output power . 17g35.3.1.1 Method of measurement 17g3ETSI ETSI EN 302 245 V
15、2.1.1 (2018-06) 4 5.3.1.1.1 Initial conditions 17g35.3.1.1.2 Procedure . 18g35.3.1.1.3 Test requirements 18g35.3.2 Frequency stability 18g35.3.2.1 Method of measurement 18g35.3.2.1.1 Initial conditions 18g35.3.2.1.2 Procedure . 18g35.3.2.1.3 Test requirements 19g35.3.3 Spurious emissions . 19g35.3.3
16、.1 Method of measurement 19g35.3.3.1.1 Initial conditions 19g35.3.3.1.2 Procedure . 19g35.3.3.1.3 Test requirements 19g35.3.4 Transmitter muting during frequency shift . 20g35.3.4.1 Method of measurement 20g35.3.4.1.1 Initial conditions 20g35.3.4.1.2 Procedure . 20g35.3.4.1.3 Test requirements 20g35
17、.3.5 Out-of-band emissions 20g35.3.5.1 Method of measurement 20g35.3.5.1.1 Initial conditions 20g35.3.5.1.2 Procedure . 20g35.3.5.1.3 Test requirements 21g35.3.6 Modulation Error Ratio (MER) 21g35.3.6.1 Method of measurement 21g3Annex A (informative): Relationship between the present document and th
18、e essential requirements of Directive 2014/53/EU . 22g3Annex B (normative): Typical measuring arrangements . 23g3B.1 Testing arrangements for antenna port (and MER) measurements 23g3B.1.0 General . 23g3B.1.1 Testing arrangement . 23g3B.1.2 Test frequency range (antenna port measurements) . 24g3B.1.3
19、 Test modulating signal . 24g3B.2 Test load characteristics . 24g3Annex C (informative): Change history . 25g3History 26g3ETSI ETSI EN 302 245 V2.1.1 (2018-06) 5 Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables may have been declared to
20、 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 ava
21、ilable 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 guarantee can be given as to the existence of other IPRs not referenced in ETSI SR
22、 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Trademarks The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners. ETSI claims no ownership of these except for any whi
23、ch are indicated as being the property of ETSI, and conveys no right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword Th
24、is Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio spectrum Matters (ERM). The present document has been prepared under the Commissions standardisation request C(2015) 5376 final i.4 to provide one voluntary means of conforming
25、to the essential requirements of Directive 2014/53/EU on the harmonisation 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.1. Once the present document is cited in the Official Journal of the European Union under
26、that Directive, compliance with the normative clauses of the present document 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. National tra
27、nsposition dates Date of adoption of this EN: 17 May 2018 Date of latest announcement of this EN (doa): 31 August 2018 Date of latest publication of new National Standard or endorsement of this EN (dop/e): 28 February 2019 Date of withdrawal of any conflicting National Standard (dow): 29 February 20
28、20 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 Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not
29、“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI EN 302 245 V2.1.1 (2018-06) 6 Introduction The present document describes the requirements for the design and operation of a DRM sound broadcasting service transmitter. ETSI ETSI EN 302 245 V2.1.1 (2018-06) 7 1 Sco
30、pe The present document specifies technical characteristics and methods of measurements for transmitting equipment for the Digital Radio Mondiale (DRM) sound broadcasting service operating in the LF band, MF band, HF band and VHF band. NOTE: The relationship between the present document and essentia
31、l requirements of article 3.2 of Directive 2014/53/EU i.1 is given in annex A. 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 publ
32、icly available in the expected location might be found at https:/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
33、of the present document. 1 ETSI ES 201 980 (V4.1.2) (04-2017): “Digital Radio Mondiale (DRM); System Specification“. 2.2 Informative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only th
34、e cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. 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 d
35、ocuments are not necessary for the application of the present document but they assist the user with regard to a particular subject area. i.1 Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the maki
36、ng available on the market of radio equipment and repealing Directive 1999/5/EC. i.2 ETSI TR 100 028 (all parts) (V1.4.1) (12-2001): “Electromagnetic compatibility and Radio spectrum Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics“. i.3 ETSI TR 100 028-2: “E
37、lectromagnetic compatibility and Radio spectrum Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics; Part 2“. i.4 Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request to the European Committee for Electrotechnical Standard
38、isation and to the European Telecommunications Standards Institute as regards radio equipment in support of Directive 2014/53/EU of the European Parliament and of the Council. ETSI ETSI EN 302 245 V2.1.1 (2018-06) 8 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the pre
39、sent document, the terms and definitions given in Directive 2014/53/EU i.1 and the following apply: amplitude imbalance: error caused by different amplification of the I and Q signals antenna port: port of an apparatus which is designed, in normal operation, to be connected to an antenna using coaxi
40、al cable broadcasting service: radiocommunication service in which the transmissions are intended for direct reception by the general public NOTE: This service may include sound transmissions, television transmissions or other types of transmission. channel bandwidth: frequency band of defined width
41、 (as a multiple of the carrier grid) including safety margin for operation on adjacent channels, located symmetrically around a carrier frequency in the carrier grid class of emission: set of characteristics of an emission, designated by standard symbols NOTE: Type of modulation of the main carrier,
42、 modulating signal, type of information to be transmitted, and also, if appropriate, any additional signal characteristics. dBc: decibels relative to the unmodulated carrier power of the emission NOTE: In the cases which do not have a carrier, for example in some digital modulation schemes where the
43、 carrier is not accessible for measurement, the reference level equivalent to dBc is decibels relative to the mean power P. DRM transmitter: device comprising a DRM exciter, RF amplifier and RF system filter enclosure port: physical boundary of the apparatus through which electromagnetic fields may
44、radiate or impinge NOTE: In the case of integral antenna equipment, this port is inseparable from the antenna port. harmonic: component of order greater than 1 of the Fourier series of a periodic quantity harmonic number: integral number given by the ratio of the frequency of a harmonic to the funda
45、mental frequency NOTE: Second harmonic = 2 fundamental frequency. intermodulation products: unwanted frequencies resulting from intermodulation between carriers or harmonics of emission, or between any oscillations generated to produce the carrier mean power: average power supplied to the antenna po
46、rt by a transmitter during an interval of time sufficiently long compared with the lowest frequency encountered in the modulation envelope taken under normal operating conditions multiplex: stream of all the digital data carrying one or more services within a single physical channel necessary bandwi
47、dth: for a given class of emission, the width of the frequency band which is sufficient to ensure the transmission of information at the rate and with the quality required under specified conditions out-of-band emissions: emission on a frequency or frequencies immediately outside the necessary bandw
48、idth which results from the modulation process, but excluding spurious emissions quadrature error: error caused by phase shift between the I and Q signals reference bandwidth: bandwidth in which the emission level is specified RF system filter: filter connected to the output of the RF amplifier to c
49、ontrol output spectrum NOTE: The RF system filter may be internal or external to the transmitter casing. ETSI ETSI EN 302 245 V2.1.1 (2018-06) 9 RMS power: the apparent power of an AC power that is calculated by multiplying root-mean-square (rms) current by the root mean square voltage NOTE 1: In a purely resistive circuit this is held to be the equivalent heating effect of a DC power and can be deemed to be true power. In a circuit that consists of reactance as well as resistance the apparent power is greater than the true power (the vector difference bet
