1、 IEC 62104 Edition 3.0 2015-07 INTERNATIONAL STANDARD Characteristics of DAB receivers IEC 62104:2015-07(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2015 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in a
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10、on or need further assistance, please contact the Customer Service Centre: csciec.ch. IEC 62104 Edition 3.0 2015-07 INTERNATIONAL STANDARD Characteristics of DAB receivers INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.060.20 ISBN 978-2-8322-2812-8 Registered trademark of the International Electro
11、technical Commission Warning! Make sure that you obtained this publication from an authorized distributor. 2 IEC 62104:2015 IEC 2015 CONTENTS FOREWORD . 6 1 Scope 8 2 Normative references. 8 3 Terms and definitions 10 4 Basic implementation and functional performance requirements . 13 4.1 Automatic
12、mode selection 13 4.1.1 General . 13 4.1.2 Requirements 13 4.2 Frequency bands 13 4.3 Channel decoder . 13 4.3.1 Standard receiver . 13 4.3.2 Multimedia receiver 13 4.4 Service selection . 13 4.4.1 General . 13 4.4.2 Requirements 14 4.5 Receiver reactions to a multiplex reconfiguration . 14 4.6 Audi
13、o decoder . 14 4.6.1 General . 14 4.6.2 DAB services . 15 4.6.3 DAB+ services . 15 4.7 Automatic switching to another ensemble 15 4.8 Response to conditional access (CA) services . 15 4.8.1 General . 15 4.8.2 Requirements for DAB receivers without CA capabilities . 15 4.9 Output for audio and other
14、services . 15 4.9.1 General . 15 4.9.2 Requirements 16 4.10 Display . 16 4.10.1 Standard receiver . 16 4.10.2 Multimedia receiver 16 4.11 Text labels 16 4.11.1 Standard receiver . 16 4.11.2 Multimedia receiver 16 4.12 Data applications 17 4.12.1 Standard receiver . 17 4.12.2 Multimedia receiver 17 5
15、 Interfaces 17 5.1 General . 17 5.2 RF input 17 5.2.1 General . 17 5.2.2 Domestic and portable receivers 17 5.2.3 Automotive receivers 18 5.3 Analogue audio interface (see IEC 61938) . 19 5.4 Digital audio interface (see IEC 60958-3) . 19 6 Options . 19 6.1 General . 19 IEC 62104:2015 IEC 2015 3 6.2
16、 Service lists 19 6.3 Display . 20 6.3.1 General . 20 6.3.2 Service labels and service component labels 20 6.3.3 Dynamic label 20 6.3.4 Signal quality indicator . 20 6.3.5 Audio coding information 20 6.4 Other receiver features 21 6.4.1 Time and date 21 6.4.2 Service following 21 6.4.3 Announcements
17、 . 21 6.4.4 Dynamic range control (DRC) . 21 6.5 Data features 21 6.5.1 Journaline 21 6.5.2 Broadcast website (BWS) . 22 6.5.3 TPEG services . 22 7 Minimum performance levels and measuring methods 22 7.1 General conditions 22 7.1.1 General Published specifications for receivers . 22 7.1.2 Power supp
18、ly . 22 7.1.3 Atmospheric conditions 22 7.1.4 BER measurement conditions . 22 7.1.5 Acoustic onset of impairment (OOI) measurement conditions 23 7.1.6 DAB signal . 23 7.1.7 Receiver classification . 23 7.2 Audio part Performance requirements . 24 7.2.1 General . 24 7.2.2 DAB services . 24 7.2.3 DAB+
19、 services . 24 7.3 RF part Sensitivity test methods . 24 7.3.1 General . 24 7.3.2 Baseband stream and RF conditions for BER and OOI testing . 24 7.3.3 Baseband stream and listening conditions for acoustic OOI testing . 24 7.4 Sensitivity requirement using a conducted signal at node “A” . 25 7.4.1 Ge
20、neral . 25 7.4.2 Method of measurement (Gaussian channel) using BER . 25 7.4.3 Presentation of results using BER 25 7.4.4 Requirements Receiver types A2, C2, D, E2 using BER . 26 7.4.5 Method of measurement (Gaussian channel) using acoustic OOI 26 7.4.6 Presentation of results using acoustic OOI . 2
21、6 7.4.7 Requirements Receiver types A2, C2, D, E2 using acoustic OOI 26 7.5 Sensitivity using radiated electromagnetic wave at node “N“ 27 7.5.1 General . 27 7.5.2 Link budget transmission assumption Non-automotive receivers . 27 7.5.3 Method of measurement Non-automotive types A1, B, C1. C2 and A2
22、with optional antenna . 27 7.5.4 Presentation of results . 29 7.5.5 Requirements Types A1, B, C1, C2 and A2 with optional antenna 29 7.5.6 Link budget transmission assumption Automotive types D, E1, E2 29 4 IEC 62104:2015 IEC 2015 7.6 RF part Maximum input power 29 7.6.1 General . 29 7.6.2 Method of
23、 measurement (Gaussian channel) 29 7.6.3 Presentation of results . 29 7.6.4 Requirements 29 7.7 RF part Selectivity 30 7.7.1 General . 30 7.7.2 Adjacent channel selectivity . 30 7.7.3 Rejection of unwanted signals (far-off selectivity) 32 7.8 RF part Performance in a Rayleigh channel 33 7.8.1 Genera
24、l . 33 7.8.2 Sensitivity 33 7.8.3 Method of measurement Conducted input signal only . 33 7.8.4 Presentation of results . 35 7.8.5 Requirements 35 7.9 RF part Acquisition time after synchronization loss 35 7.9.1 General . 35 7.9.2 Method of measurement . 35 7.9.3 Presentation of results . 36 7.9.4 Re
25、quirements 36 Annex A (informative) Recommended centre frequencies 37 Annex B (normative) Characteristics of a Rayleigh channel . 39 B.1 Simulation of the mobile radio channel . 39 B.2 Doppler spectrum types . 39 B.2.1 General . 39 B.2.2 Doppler spectrum: CLASS 40 B.2.3 Doppler spectrum: GAUS1 . 40
26、B.2.4 Doppler spectrum: GAUS2 . 40 B.2.5 Doppler spectrum: GAUSDAB 40 B.2.6 Doppler spectrum: RICE . 40 B.3 Propagation models 40 B.3.1 General . 40 B.3.2 Typical rural (non-hilly) area (RA) . 41 B.3.3 Typical urban (non-hilly) area (TU) . 41 B.4 Tap setting for hardware simulators . 42 Annex C (inf
27、ormative) Basic characteristics and functionality for accessibility for blind and visually impaired users . 44 Bibliography . 45 Figure 1 Example of a functional block diagram of a DAB receiver 12 Figure 2 Block diagram for the measurement of the sensitivity and the maximum input power, using BER .
28、25 Figure 3 Block diagram for the measurement of the sensitivity and the maximum input power, using acoustic OOI 26 Figure 4 Block diagram for the measurement of free field sensitivity 27 Figure 5 Free field screened chamber measurement Features and setup 28 Figure 6 Spectrum mask of the DAB signal
29、for selectivity measurements . 30 Figure 7 Block diagram for BER method selectivity measurements 31 IEC 62104:2015 IEC 2015 5 Figure 8 Block diagram for OOI method selectivity measurements. 32 Figure 9 Block diagram for measuring the performance in a Rayleigh channel . 34 Figure 10 Block diagram for
30、 measuring acquisition time after synchronization loss 35 Figure B.1 Continuous delay power profile P() for RA 41 Figure B.2 Continuous delay power profile P() for TU 41 Table 1 Performance requirement for an automotive active antenna 18 Table 2 Classification of receiver types 23 Table 3 Conditions
31、 for BER and OOI testing . 24 Table 4 Conditions for acoustic OOI testing 25 Table 5 Conditions for uniform signal level . 28 Table 6 Minimum requirements for maximum input power (conducted) 30 Table 7 Difference between the centre frequencies of the DAB ensembles 31 Table 8 Minimum requirement for
32、adjacent channel selectivity 32 Table 9 Channel simulation profiles related to frequency band and mode 34 Table A.1 Recommended centre frequencies for DAB (1 of 2) . 37 Table B.1 Four tap setting for typical rural (non-hilly) area (RA) 42 Table B.2 Six tap setting for typical rural (non-hilly) area
33、(RA) 42 Table B.3 Twelve tap setting for typical urban (non-hilly) area (TU) . 43 Table B.4 Six tap setting for typical urban (non-hilly) area (TU) . 43 Table B.5 Tap setting for single-frequency networks (SFN) in VHF bands 43 6 IEC 62104:2015 IEC 2015 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ CHA
34、RACTERISTICS OF DAB RECEIVERS FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions con
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43、enses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Att
44、ention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62104 has been prepared by technical area 1, Terminals for audio,video
45、 and data services and contents, of IEC technical committee 100: Audio, video and multimedia systems and equipment. This third edition cancels and replaces the second edition published in 2003. This edition constitutes a technical revision. The main changes with respect to the previous edition are a
46、s follows. The document has been updated in line with the development of the DAB system, and in particular the introduction of DAB+ audio services (see ETSI TS 102 563). 1 Requirements for displays, text and data applications have been introduced to reflect market trends. _ 1For an overview of the D
47、AB standards, see ETSI TR 101 495. IEC 62104:2015 IEC 2015 7 Additional test methods have been introduced to allow R.F. measurements to be made on receivers with integrated antennas and/or no external BER indicators by using an acoustic impairment method. Clause 6 has been updated to reflect the dev
48、elopment of the market and to provide better guidance for the implementation of optional features. The text of this standard is based on the following documents: FDIS Report on voting 100/2502/FDIS 100/2541/RVD Full information on the voting for the approval of this standard can be found in the repo
49、rt on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revise
