IEC 62634:2015

Radio data system (RDS) - Receiver products and characteristics - Methods of measurement

IEC 62634:2015 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 the market that significantly out-perform the minimum RDS receiver performance requirements quoted. This second edition cancels and replaces the first edition published in 2011 and constitutes a technical revision. It includes the following changes:
- 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 corrected. The term "de-emphasis" shall read correctly "pre-emphasis".

Système de radiodiffusion de données (RDS) - Récepteurs et caractéristiques - Méthodes de mesure

L'IEC 62634:2015 décrit les exigences minimales de performance des récepteurs RDS, qui concernent trois catégories de récepteurs RDS et leur mesure. Il convient néanmoins de noter qu'il existe aussi sur le marché des récepteurs RDS qui dépassent largement les exigences minimales de performances indiquées ici pour les récepteurs RDS. Cette deuxième édition annule et remplace la première édition publiée en 2011. Elle constitue une révision technique. Elle inclut les modifications suivantes:
- le cas de mesure d'essai à 100 kHz tiré de l'Article 8 de l'IEC 62634:2011 a été supprimé car il ne permettait pas d'obtenir des résultats de mesure stables et reproductibles;
- une erreur a été corrigée. À la place du terme "désaccentuation", il faut lire "préaccentuation".

General Information

• Status: Published
• Publication Date: 29-Mar-2015
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.060.20 - Receiving and transmitting equipment
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Current Stage: PPUB - Publication issued
• Start Date: 31-Mar-2015
• Completion Date: 30-Mar-2015

Relations

• Revises: IEC 62634:2011 - Radio data system (RDS) - Receiver products and characteristics - Methods of measurement
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62634 ®
Edition 2.0 2015-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Radio data system (RDS) – Receiver products and characteristics – Methods of
measurement
Système de radiodiffusion de données (RDS) – Récepteurs et caractéristiques –
Méthodes de mesure
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IEC 62634 ®
Edition 2.0 2015-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Radio data system (RDS) – Receiver products and characteristics – Methods of

measurement
Système de radiodiffusion de données (RDS) – Récepteurs et caractéristiques –

Méthodes de mesure
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.060.20 ISBN 978-2-8322-2267-6

– 2 – IEC 62634:2015 © IEC 2015
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references. 7
3 Terms, definitions 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 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 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 guidelines 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 Requirement . 15
Bibliography . 16

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 ELECTROTECHNICAL COMMISSION
____________
RADIO DATA SYSTEM (RDS) – RECEIVER PRODUCTS
AND CHARACTERISTICS – METHODS OF MEASUREMENT

FOREWORD
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