1、 ETSI EN 302 296 V2.1.1 (2017-06) Digital Terrestrial TV Transmitters; Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU HARMONISED EUROPEAN STANDARD ETSI ETSI EN 302 296 V2.1.1 (2017-06) 2 Reference REN/ERM-TG17-24 Keywords broadcasting, digital, harmoni
2、sed standard, radio, regulation, terrestrial, transmitter, TV, video 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 780
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9、2017-06) 3 Contents Intellectual Property Rights 5g3Foreword . 5g3Modal verbs terminology 5g3Introduction 5g31 Scope 6g32 References 6g32.1 Normative references . 6g32.2 Informative references 7g33 Definitions, symbols and abbreviations . 8g33.1 Definitions 8g33.2 Symbols 9g33.3 Abbreviations . 9g34
10、 Technical requirements specifications . 10g34.1 Environmental profile . 10g34.2 Conformance requirements 10g34.2.1 Introduction. 10g34.2.2 Spurious emissions . 10g34.2.2.1 Definition 10g34.2.2.2 Limits 11g34.2.2.3 Conformance test 11g34.2.3 Out-of-band emissions 12g34.2.3.1 Definition 12g34.2.3.2 C
11、lassification of transmitters . 12g34.2.3.3 Limits 12g34.2.3.4 Conformance test 16g35 Testing for compliance with technical requirements 17g35.1 Environmental conditions for testing . 17g35.2 Interpretation of the measurement results 17g35.3 Test conditions . 17g35.3.1 Test frequency range . 17g35.3
12、.2 Test modulation signal 18g35.4 Essential radio test suites 18g35.4.1 Introduction. 18g35.4.2 Spurious emissions . 18g35.4.2.1 Measurement approaches 18g35.4.2.2 Initial conditions . 19g35.4.2.3 Test procedure . 19g35.4.2.4 Test requirements 19g35.4.2.5 Test arrangement. 20g35.4.3 Out-of-band emis
13、sions 20g35.4.3.1 Initial conditions . 20g35.4.3.2 Test procedure . 21g35.4.3.3 Test requirements 21g35.4.3.4 Test arrangement. 21g3Annex A (informative): Relationship between the present document and the essential requirements of Directive 2014/53/EU . 22g3Annex B (informative): Void . 23g3Annex C
14、(informative): Practical measurement of spurious domain emissions for broadcast transmitters 24g3C.0 Introduction 24g3ETSI ETSI EN 302 296 V2.1.1 (2017-06) 4 C.1 Directional coupler issues 24g3C.2 Spectrum analyser settings . 26g3C.3 Composite measurement of spurious emissions . 26g3Annex D (informa
15、tive): Practical Measurement of out-of-band Domain Emissions 27g3D.1 Composite measurement of out-of-band emissions . 27g3D.2 System considerations 28g3D.3 Spectrum analyser settings for OOB measurements 29g3D.4 OOB domain emissions - typical spectrum analyser traces . 29g3D.5 ACLR measurement . 30g
16、3Annex E (informative): Impact of ACLR of low power broadcast transmitters on adjacent DVB-T/T2 services for co-sited networks 31g3E.0 Introduction 31g3E.1 Equipment Configuration . 31g3E.2 Results 32g3E.3 Theoretical impact of MER on END 33g3E.4 Conclusions 33g3Annex F (informative): Energy Efficie
17、ncy and the impact on unwanted Out of Block Emissions 34g3Annex G (informative): Bibliography . 35g3Annex H (informative): Change history . 36g3History 37g3ETSI ETSI EN 302 296 V2.1.1 (2017-06) 5 Intellectual Property Rights IPRs essential or potentially essential to the present document may have be
18、en 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“
19、, 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 by ETSI. No guarantee can be given as to the existence of other IPRs not referen
20、ced 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 Committee Electromagnetic compatibility and Radio spectrum Matters (ERM). The pre
21、sent document has been prepared under the Commissions standardisation request C(2015) 5376 final i.3 to provide one voluntary means of conforming 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
22、 of radio equipment and repealing Directive 1999/5/EC i.2. 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 document given in table A.1 confers, within the limits of the scope of the present do
23、cument, a presumption of conformity with the corresponding essential requirements of that Directive, and associated EFTA regulations. National transposition dates Date of adoption of this EN: 26 June 2017 Date of latest announcement of this EN (doa): 30 September 2017 Date of latest publication of n
24、ew National Standard or endorsement of this EN (dop/e): 31 March 2018 Date of withdrawal of any conflicting National Standard (dow): 31 March 2019 Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ a
25、re 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“ are NOT allowed in ETSI deliverables except when used in direct citation. Introduction The present document has been produced to update the existing stand
26、ard in line with the requirements of article 3.2 of Directive 2014/53/EU i.2. ETSI ETSI EN 302 296 V2.1.1 (2017-06) 6 1 Scope The present document specifies technical characteristics and methods of measurements for digital terrestrial television transmitters as defined in table 1.1 and in table 1.2.
27、 The output power classification (table 1.1) and emission classification (table 1.2) are combined to define a transmitter category. For example, power classification H and emission classification 0 denotes a high power transmitter (category H0) whose OOB emissions comply with a non-critical mask. Ta
28、ble 1.1: Transmitter power classification Power Class Description Notes H High power transmitter Transmitter with an output power 25 W operating in the VHF band (174 MHz to 230 MHz) or UHF band (470 MHz to 694 MHz). L Low power transmitter Transmitter with an output power 470 MHz to 694 MHz -36 dBm
29、for P 39 dBm 75 dBc for 39 dBm 694 MHz -36 dBm (250 nW) for P 69 dBm 105 dBc for 69 dBm 10 across the bandwidth of the victim service for 1 dB precision. Increasing the number of analyser points will improve the precision. D.4 OOB domain emissions - typical spectrum analyser traces Plot 1 to plot 3
30、below show example spectrum analyser measurement traces from the methodology described in clause D.1, clause D.2 and clause D.3 above. Plot 1 shows the RF filter transmission loss. Plot 2 shows the Transmitter performance before RF Filter/combiner. Plot 3 shows the Composite trace derived from the a
31、ddition of plot 1 and plot 2. Note the Non critical mask is also displayed on this plot. Figure D.2: Typical RF Analyser Traces ETSI ETSI EN 302 296 V2.1.1 (2017-06) 30 D.5 ACLR measurement Figure D.3 shows an example DVB-T2 ACLR measurement of first and second adjacent 7,8 MHz victim channels in 8 MHz spacing. In this case the ACLR values are automatically calculated in the instrument from the OOB composite plot. Figure D.3: ACLR Composite Trace Measurement
