1、 IEC 62634 Edition 2.0 2015-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Radio data system (RDS) Receiver products and characteristics Methods of measurement Systme de radiodiffusion de donnes (RDS) Rcepteurs et caractristiques Mthodes de mesure IEC 62634:2015-03(en-fr) THIS PUBLICATION IS COPYRIG
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19、es commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 62634 Edition 2.0 2015-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Radio data system (RDS) Receiver products and characteristics Methods of measurement Systme de radiodiffusion de donnes (RDS) Rcept
20、eurs et caractristiques Mthodes de mesure INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 33.060.20 ISBN 978-2-8322-2267-6 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warn
21、ing! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 IEC 62634:2015 IEC 2015 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope 7 2 Normative references. 7 3 Terms, definitions
22、 and abbreviations 7 3.1 Terms and definitions 7 3.2 Abbreviations 8 4 Measuring method . 8 4.1 Standard measuring signal 8 4.2 RDS data conditions 9 4.2.1 General . 9 4.2.2 Matching circuit 9 5 Measurement of the RDS sensitivity . 10 5.1 General . 10 5.2 Method of measurement 10 5.3 Presentation of
23、 the results . 10 6 Measurement of the RDS data acquisition 10 6.1 General . 10 6.2 Time to synchronise 10 6.3 Time to detect a first PI . 11 6.4 Method of measurement 11 7 Measurement of the large signal capabilities 11 7.1 General . 11 7.2 Resistance to high wanted signal levels . 11 7.2.1 Method
24、of measurement . 11 7.2.2 Large wanted signal requirement 11 7.3 RDS performance at large unwanted signal . 11 7.3.1 Method of measurement . 11 7.3.2 Large unwanted signal requirements 12 8 Measurement of the RDS selectivity . 12 8.1 General . 12 8.2 Method of measurement 12 9 Considerations and gui
25、delines for evaluation of the dynamic RDS performance 13 9.1 General . 13 9.2 RDS dynamic behaviour 13 9.3 Traffic announcements TA/TP . 14 9.3.1 TA message . 14 9.3.2 End of TA message 14 9.3.3 TP search 14 9.3.4 TA announcement skip . 14 9.4 Regionalisation . 14 9.4.1 Implementations . 14 9.4.2 Re
26、quirement 15 Bibliography . 16 IEC 62634:2015 IEC 2015 3 Figure 1 Coupling circuit 9 Figure 2 Matching circuits for RDS product devices with three different input impedances 9 Table 1 Presentation of the measurement result . 12 Table 2 AF example . 15 4 IEC 62634:2015 IEC 2015 INTERNATIONAL ELECTROT
27、ECHNICAL COMMISSION _ RADIO DATA SYSTEM (RDS) RECEIVER PRODUCTS AND CHARACTERISTICS METHODS OF MEASUREMENT FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). Th
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38、rd IEC 62634 has been prepared by technical area 1: Terminals for audio, video and data services and contents, of IEC technical committee 100: Audio, video and multimedia systems and equipment. This second edition cancels and replaces the first edition published in 2011. This edition constitutes a t
39、echnical revision. This edition includes the following significant technical changes with respect to the previous edition: the 100 kHz test measurement case from Clause 8 of IEC 62634:2011 was deleted as it did not permit to achieve stable and reproducible measurement results; an error has been corr
40、ected. The term “de-emphasis” shall read correctly “pre-emphasis”. IEC 62634:2015 IEC 2015 5 The text of this standard is based on the following documents: CDV Report on voting 100/2121/CCDV 100/2419/RVC Full information on the voting for the approval of this standard can be found in the report on v
41、oting 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 da
42、ta related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 6 IEC 62634:2015 IEC 2015 INTRODUCTION This International Standard gives commonly agreed measuring methods to complement the RDS standard IEC 62106 and the
43、 RBDS standard (NRSC-4-A) in the USA. The RDS measuring methods presented here are directed at all manufacturers of RDS receiver products, and in particular tuner modules with embedded RDS functionality, including TMC (see ISO 14819 series of standards). IEC 62634:2015 IEC 2015 7 RADIO DATA SYSTEM (
44、RDS) RECEIVER PRODUCTS AND CHARACTERISTICS METHODS OF MEASUREMENT 1 Scope This International Standard describes how to measure minimum RDS receiver performance requirements which concern three RDS receiver product categories. However, it should be noted that there are also RDS receiver products on t
45、he market that significantly out-perform the minimum RDS receiver performance requirements quoted. Methods and algorithms to achieve automatic programme service-following by means of AF lists are, however, very customer- and manufacturer-specific, and are therefore not covered in this standard. 2 No
46、rmative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendment
47、s) applies. IEC 62106, Specification of the Radio Data System (RDS) for VHF/FM sound broadcasting in the frequency range from 87,5 MHz to 108,0 MHz 3 Terms, definitions and abbreviations 3.1 Terms and definitions For the purposes of this document, the following terms and definitions apply. Terms and
48、 definitions of the RDS features used shall be found in IEC 62106. 3.1.1 RDS product category 1 RDS receiver product with high-ohmic input impedance EXAMPLE For portable devices. 3.1.2 RDS product category 2 RDS receiver product with 50 input impedance EXAMPLE Car radio optimized for active antenna.
49、 3.1.3 RDS product category 3 RDS receiver product with 75 input impedance EXAMPLE Car radio optimized for rod antenna or home receiver. 3.1.4 RDS reception the signal at which the RDS signal is received with 50 % non-corrected error-free blocks Note 1 to entry: In practice, the level at which the TP bit is immediately detected. 8 IEC 62634:2015 IEC 2015 3.1.5 large signal behaviour capability
