1、 ETSI EN 302 077-1 V1.1.1 (2005-01)European Standard (Telecommunications series) Electromagnetic compatibilityand Radio spectrum Matters (ERM);Transmitting equipment for theTerrestrial - Digital Audio Broadcasting (T-DAB) service;Part 1: Technical characteristics and test methodsETSI ETSI EN 302 077
2、-1 V1.1.1 (2005-01) 2 Reference DEN/ERM-TG17WG2-002-1 Keywords audio, broadcasting, DAB, digital, radio, terrestrial 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 e
3、nregistre la Sous-Prfecture de Grasse (06) N 7803/88 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 co
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8、. ETSI ETSI EN 302 077-1 V1.1.1 (2005-01) 3 Contents Intellectual Property Rights5 Foreword.5 Introduction 5 1 Scope 6 2 References 6 3 Definitions, symbols and abbreviations .7 3.1 Definitions7 3.2 Symbols8 3.3 Abbreviations .8 4 Technical requirements specifications .9 4.1 Environmental profile.9
9、4.2 Transmitter output characteristics 9 4.2.1 Rated output power.9 4.2.1.1 Definition 9 4.2.1.2 Method of measurement9 4.2.1.2.1 Initial conditions9 4.2.1.2.2 Procedure.9 4.2.1.2.3 Test requirements 10 4.2.1.3 Limit10 4.2.2 Frequency stability10 4.2.2.1 Definition 10 4.2.2.2 Method of measurement10
10、 4.2.2.2.1 Initial conditions10 4.2.2.2.2 Procedure.10 4.2.2.2.3 Test requirements 10 4.2.2.3 Limit11 4.2.3 Crest factor11 4.2.3.1 Definition 11 4.2.3.2 Method of measurement11 4.2.3.2.1 Initial conditions11 4.2.3.2.2 Procedure.11 4.2.3.2.3 Test requirements 11 4.2.3.3 Limit12 4.3 Digital signal pro
11、cessing 12 4.3.1 Signal delay of T-DAB transmitters .12 4.3.1.1 Definition 12 4.3.1.2 Method of measurement12 4.3.1.2.1 Initial conditions12 4.3.1.2.2 Procedure.12 4.3.1.2.3 Test requirements 12 4.3.1.3 Limit12 4.3.2 Behaviour in case of erroneous ETI signal .12 4.3.2.1 Definition 12 4.3.2.2 Method
12、of measurement13 4.3.2.2.1 Initial conditions13 4.3.2.2.2 Procedure.13 4.3.2.2.3 Test requirements 13 4.3.2.3 Limit13 4.3.3 BER-Performance degradation .13 4.3.3.1 Definition 13 4.3.3.2 Method of measurement13 4.3.3.2.1 Initial conditions13 4.3.3.2.2 Procedure.14 ETSI ETSI EN 302 077-1 V1.1.1 (2005-
13、01) 4 4.3.3.2.3 Test requirements 14 4.3.3.3 Limit14 4.4 Antenna port measurements .14 4.4.1 Spurious emissions .14 4.4.1.1 Definition 14 4.4.1.2 Method of measurement (essential test suite) .15 4.4.1.2.1 Initial conditions15 4.4.1.2.2 Procedure.15 4.4.1.2.3 Test requirements 15 4.4.1.3 Limit15 4.4.
14、2 Out-of-band emissions17 4.4.2.1 Definition 17 4.4.2.2 Method of measurement (essential test suite) .17 4.4.2.2.1 Initial conditions17 4.4.2.2.2 Procedure.17 4.4.2.2.3 Test requirements 17 4.4.2.3 Limit17 4.5 Enclosure port measurements (radiated emissions)21 4.5.1 Cabinet radiation.21 4.5.1.1 Defi
15、nition 21 4.5.1.2 Method of measurement (essential test suite) .21 4.5.1.2.1 Initial conditions21 4.5.1.2.2 Procedure.21 4.5.1.2.3 Test requirements 21 4.5.1.3 Limit22 4.6 Measurement uncertainties.23 Annex A (normative): General measuring arrangements24 A.1 Testing arrangements for antenna port mea
16、surements .24 A.1.1 Spurious emissions.24 A.1.2 Out-of-band emissions .25 A.1.3 Test frequency range 25 A.1.4 Test modulating signal .26 A.2 Testing arrangements for enclosure port (radiated emissions) measurements .26 Annex B (informative): Typical COFDM measuring arrangements.27 B.1 ETI errors .27
17、 B.2 Bit Error performance measurement 27 B.2.1 Test procedure27 Annex C (informative): Measurement of the overall delay of a T-DAB transmitter .29 Annex D (informative): Delay type and delay management.31 Annex E (informative): Spectrum measurements .32 Annex F (informative): Bibliography.33 Histor
18、y 34 ETSI ETSI EN 302 077-1 V1.1.1 (2005-01) 5 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 f
19、ound 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
20、 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.
21、Foreword This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio spectrum Matters (ERM). The present document is part 1 of a multi-part deliverable covering the Electromagnetic compatibility and Radio spectrum Matters (
22、ERM); Transmitting equipment for the Terrestrial - Digital Audio Broadcasting (T-DAB) service, as identified below: Part 1: “Technical characteristics and test methods“; Part 2: “Harmonized EN under article 3.2 of R EN 301 489-11 2. ETSI ETSI EN 302 077-1 V1.1.1 (2005-01) 6 1 Scope The present docum
23、ent applies to the following radio telecommunications terminal equipment types: - Digital Audio Broadcast - Terrestrial equipment used in the sound broadcasting service. NOTE: At the time the present document was drafted, the following bands were allocated to T-DAB (Wiesbaden agreement, Maastricht a
24、greement (see bibliography): square4 47 MHz to 68 MHz; square4 174 MHz to 240 MHz; square4 1 452 MHz to 1 492 MHz. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either specific (identified
25、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. Referenced documents which are not found to be publicly available in the expected location might be
26、found at http:/docbox.etsi.org/Reference. 1 ETSI EN 302 077-2: “Electromagnetic compatibility and Radio spectrum Matters (ERM); Transmitting equipment for the Terrestrial - Digital Audio Broadcasting (T-DAB) service; Part 2: Harmonized EN under article 3.2 of the R ElectroMagnetic Compatibility (EMC
27、) standard for radio equipment and services; Part 11: Specific conditions for terrestrial sound broadcasting service transmitters“. 3 ETSI ETS 300 799: “Digital Audio Broadcasting (DAB); Distribution interfaces; Ensemble Transport Interface (ETI)“. 4 CENELEC EN 55022: “Information technology equipme
28、nt - Radio disturbance characteristics - Limits and methods of measurement“. 5 CENELEC EN 55011: “Industrial, scientific and medical (ISM) radio-frequency equipment - Radio disturbance characteristics - Limits and methods of measurement“. 6 IEC 60489-1 amendment 2: “Methods of measurement for radio
29、equipment used in the mobile services. Part 1: General definitions and standard conditions of measurement“. 7 ETSI TR 100 028 (all parts): “Electromagnetic compatibility and Radio spectrum Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics“. ETSI ETSI EN 302 07
30、7-1 V1.1.1 (2005-01) 7 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: antenna port: port of an apparatus which is designed, in normal operation, to be connected to an antenna using coaxial cable broadcasti
31、ng 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. cabinet radiation: radiation from an enclosure containing, equipment,
32、 excluding radiation from connected antennas or cables class of emission: set of characteristics of an emission, designated by standard symbols, e.g. type of modulation of the main carrier, modulating signal, type of information to be transmitted, and also, if appropriate, any additional signal char
33、acteristics 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 carrier is not accessible for measurement, the reference level equivalent to dBc is decibels relative to the me
34、an power P. enclosure port: physical boundary of the apparatus through which electromagnetic fields may radiate or impinge NOTE: In the case of integral antenna equipment, this port is inseparable from the antenna port. environmental profile: range of environmental conditions under which equipment w
35、ithin the scope of EN 302 077-1 is required to comply with the provisions of EN 302 077-1 exclusion band: band of radio frequencies where no measurements are made harmonic: component of order greater than 1 of the Fourier series of a periodic quantity harmonic number: integral number given by the ra
36、tio of the frequency of a harmonic to the fundamental frequency (2ndharmonic = 2 x fundamental frequency) intermodulation products: unwanted frequencies resulting from intermodulation between carriers or harmonics of emission, or between any oscillations generated to produce the carrier L-band: for
37、the purpose of these document L-band is defined as the frequency range from 1 452 MHz to 1 492 MHz mean power: average power supplied to the antenna port by a transmitter during an interval of time sufficiently long compared with the lowest frequency encountered in the modulation envelope taken unde
38、r normal operating conditions necessary bandwidth: 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 frequ
39、encies immediately outside the necessary bandwidth which results from the modulation process, but excluding spurious emissions rated output power: power that the transmitter or transposer shall deliver at its output under specified conditions of operation reference bandwidth: bandwidth in which the
40、emission level is specified ETSI ETSI EN 302 077-1 V1.1.1 (2005-01) 8 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 o
41、f 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 between true power and apparent power is called reactive power). True Power = Vrms x (Irms cos ) Where cos is the ph
42、ase difference between voltage and current introduced by the reactance of the load. NOTE 2: From the above definition it becomes clear that unless any measuring system can be completely devoid of reactance then the measured power cannot be considered to be RMS power. It therefore becomes apparent th
43、at this parameter would be difficult to measure with any degree of accuracy at RF frequencies. spurious emissions: emissions on a frequency or frequencies which are outside the necessary bandwidth and the level of which may be reduced without affecting the corresponding transmission of information.
44、Spurious emissions include harmonic emissions, parasitic emissions, intermodulation products and frequency conversion products but exclude out of band emissions. unwanted emissions: consist of spurious emissions and out-of-band emissions 3.2 Symbols For the purposes of the present document, the foll
45、owing symbols apply: C/N Carrier power to Noise power density micro, 10-6 3.3 Abbreviations For the purposes of the present document, the following abbreviations apply: BER Bit Error Ratio COFDM Coded Orthogonal Frequency Division Multiplex CRC Cyclic Redundancy Check CW Continuous Wave EMC ElectroM
46、agnetic Compatibility ETI Ensemble Transport Interface EUT Equipment Under Test FIB Fast Information Blocks FIC Fast Information Channel Hz Hertz (cycles per second) IEC International Electrotechnical Commission IF Intermediate Frequency ITU International Telecommunications Union LV Low Voltage N No
47、ise power NI Network Independent layer PRBS Pseudo Random Binary Sequence R b) the highest operating frequency of the EUT; c) a frequency mid-way between a) and b) above. Test arrangement: (see figure A.1) 1) all ports unused at the time of testing shall be correctly terminated; 2) connect the EUT t
48、o the Test Load, via the Coupling Device or via the attenuator; 3) connect the measuring device to the Coupling Device or attenuator. 4.2.1.2.2 Procedure The power of the signal of a T-DAB transmitter is defined as the long-term average of the time-varying short-term signal power. An appropriate ins
49、trument for T-DAB power measurements is a thermal power meter. NOTE: The signal power is constant symbol by symbol. A certain short-term variation is especially given by the Null symbol. ETSI ETSI EN 302 077-1 V1.1.1 (2005-01) 104.2.1.2.3 Test requirements The results obtained shall be compared to the limits in clause 4.2.1.3 in order to demonstrate compliance. 4.2.1.3 Limit The output power shall be within 0,5 dB of the rated output power under normal operating conditions as defined by the manufacturer. 4.2.2 Frequency stability 4.2.2.1 Definit
