Methods of measurement on radio receivers for various classes of emission -- Part 9: Measurement of the characteristics relevant to radio data system (RDS) reception

Specifies the conditions, characteristics and methods of measurement to be used to determine the RDS reception characteristics of a sound-broadcasting receiver, so as to make possible the comparison of results of measurements made by different observers.

Meßverfahren für Funkempfänger für verschiedene Sendearten -- Teil 9: Messungen von auf RDS(Radio-Daten-System)-Empfang bezogenen Eigenschaften

Méthodes de mesure applicables aux récepteurs radioélectriques pour diverses classes d'émission -- Partie 9: Méthodes de mesure des caractéristiques relatives à la réception du système de radiodiffusion de données (RDS)

Spécifie les conditions, caractéristiques et méthodes de mesure à utiliser pour déterminer les caractéristiques de réception RDS d'un récepteur de radiodiffusion sonore, afin de pouvoir comparer des résultats des mesures réalisées par différents observateurs.

Methods of measurement on radio receivers for various classes of emission -- Part 9: Measurement of the characteristics relevant to radio data system (RDS) reception (IEC 60315-9:1996)

General Information

Status
Published
Publication Date
31-Mar-1999
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Apr-1999
Due Date
01-Apr-1999
Completion Date
01-Apr-1999

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SLOVENSKI STANDARD
SIST EN 60315-9:1999
01-april-1999

Methods of measurement on radio receivers for various classes of emission -- Part

9: Measurement of the characteristics relevant to radio data system (RDS)
reception (IEC 60315-9:1996)

Methods of measurement on radio receivers for various classes of emission -- Part 9:

Measurement of the characteristics relevant to radio data system (RDS) reception

Meßverfahren für Funkempfänger für verschiedene Sendearten -- Teil 9: Messungen von

auf RDS(Radio-Daten-System)-Empfang bezogenen Eigenschaften

Méthodes de mesure applicables aux récepteurs radioélectriques pour diverses classes

d'émission -- Partie 9: Méthodes de mesure des caractéristiques relatives à la réception

du système de radiodiffusion de données (RDS)
Ta slovenski standard je istoveten z: EN 60315-9:1996
ICS:
33.160.20 Radijski sprejemniki Radio receivers
SIST EN 60315-9:1999 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60315-9:1999SIST EN 60315-9:1999
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SIST EN 60315-9:1999SIST EN 60315-9:1999
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SIST EN 60315-9:1999SIST EN 60315-9:1999
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SIST EN 60315-9:1999SIST EN 60315-9:1999
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SIST EN 60315-9:1999SIST EN 60315-9:1999
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SIST EN 60315-9:1999SIST EN 60315-9:1999
NORME
CEI
INTERNATIONALE
IEC
315-9
INTERNATIONAL
Première édition
STANDARD
First edition
1996-05
Méthodes de mesure applicables
aux récepteurs radioélectriques pour
diverses classes d'émission —
Partie 9:
Méthodes de mesure des caractéristiques
relatives à la réception du système
de radiodiffusion de données (RDS)
Methods of measurement on radio
receivers for various classes of emission —
Part 9:
Measurement of the characteristics relevant
to radio data system (RDS) reception
© CEI 1996 Droits de reproduction réservés —Copyright - all rights reserved

Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized

utilisée sous quelque forme que ce soit et par aucun procédé, in any form or by any means, electronic or mechanical,

électronique ou mécanique, y compris la photocopie et les including photocopying and microfilm, without permission

microfilms, sans l'accord écrit de réditeur. in writing from the publisher

Bureau central de la Commission Electrotechnique Internationale 3, rue de Varembé Genève Suisse

Téléfax: +41 22 919 0300 e-mail: inmailiec.ch IEC web site http://www.iec.ch
Commission Electrotechnique Internationale CODE PRIX
International Electrotechnical Commission PRICE CODE
IEC
Meai yHapopHaa 3nel rporexHHVectlaa tioMwccwfl
Pour prix, voir catalogue en vigueur
For price, see current catalogue
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SIST EN 60315-9:1999SIST EN 60315-9:1999
315-9 ©IEC:1996 – 3 –
CONTENTS
Page
FOREWORD 5
Clause
1 General 7
2 General notes on measurements 9
3 Characteristics and methods of measurement 11
Annexes
A The radio broadcast data system 27
B Bibliography 29
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SIST EN 60315-9:1999SIST EN 60315-9:1999
315-9 ©IEC:1996 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
METHODS OF MEASUREMENT ON RADIO RECEIVERS FOR
VARIOUS CLASSES OF EMISSION —
Part 9:
Measurement of the characteristics relevant to
radio data system (RDS) reception
FOREWORD

The IEC (International Electrotechnical Commission) is a worldwide organization for standardization

comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to

promote international cooperation on all questions concerning standardization in the electrical and electronic

fields. To this end and in addition to other activities, the IEC publishes International Standards. Their

preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt

with may participate in this preparatory work. International, governmental and non-governmental organizations

liaising with the IEC also participate in this preparation. The IEC collaborates closely with the International

Organization for Standardization (ISO) in accordance with conditions determined by agreement between the

two organizations.

The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an

international consensus of opinion on the relevant subjects since each technical committee has representation

from all interested National Committees.

The documents produced have the form of recommendations for international use and are published in the

form of standards, technical repo rts or guides and they are accepted by the National Committees in that

sense.

4) In order to promote international unification, IEC National Committees undertake to apply IEC International

Standards transparently to the maximum extent possible in their national and regional standards. Any

divergence between the IEC Standard and the corresponding national or regional standard shall be clearly

indicated in the latter.

The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with one of its standards.

Attention is drawn to the possibility that some of the elements of this International Standard may be the

subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 315-9 has been prepared by subcommittee 100A (former 12A):

Receiving equipment, of IEC technical committee 100: Audio, video and multimedia systems

and equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
100A/2/FDIS 1 00A/1 4/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.
Annexes A and B are for information only.
This part of IEC 315 is to be used in conjunction with IEC 315-1 and IEC 315-4.
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SIST EN 60315-9:1999SIST EN 60315-9:1999
315-9 © IEC:1996 – 7 –
METHODS OF MEASUREMENT ON RADIO RECEIVERS FOR
VARIOUS CLASSES OF EMISSION —
Part 9: Measurement of the characteristics relevant to
radio data system (RDS) reception
1 General
1.1 Scope

This part of IEC 315 specifies the conditions, characteristics and methods of measurement to

be used to determine the RDS reception characteristics of a sound-broadcasting receiver, so

as to make possible the comparison of results of measurements made by different observers.

Performance requirements (limit values for the characteristics required for acceptable RDS

performance) are not specified. The methods of measurement are conceived for determining

the overall performance of the receiver, without attempting to study its functional units

separately.
1.2 Normative references

The following standards contain provisions which, through reference in this text, constitute

provisions of this pa rt
of IEC 315. At the time of publication, the editions indicated were valid.

All standards are subject to revision, and parties to agreements based on this part of IEC 315

are encouraged to investigate the possibility of applying the most recent editions of the

standards indicated below. Members of IEC and ISO maintain registers of currently valid

International Standards.
IEC 315-1: 1988,
Methods of measurement on radio receivers for various classes of emission –

Part 1: General considerations and methods of measurement, including audio-frequency

measurements
IEC 315-4: 1982,
Methods of measurement on radio receivers for various classes of emission –
Part 4: Radio-frequency measurements on receivers for frequency modulated sound-
broadcasting emissions
CISPR 16-1: 1993,
Specification for radio disturbance and immunity measuring apparatus and
methods – Part
1: Radio disturbance and immunity measuring apparatus
1.3 Definitions

The "characteristics to be specified" are defined in their relevant clauses. This avoids the need

for cross-references when reading the text. For the purposes of this pa
rt of IEC 315, the
following definition applies:
1.3.1 satisfactory reception:
The correct display of the programme service name (PS)
within 10 s after the beginning of the relevant step of a test.
NOTES

1 Any eight characters from the available character set may be chosen as the programme service name. The

chosen name(s) should be stated with the results.

2 The correct display of the programme service name is used as the criterion for satisfactory reception,

because this application is generally available on RDS receivers, and can be used without making internal

connections to the receiver circuits.

3 If the PS is not available (on a special purpose receiver, for example), another, stated, criterion may be

used. In this case, it may be necessary to make internal connections to the receiver in order to obtain a suitable

output signal for measurement. If possible, a correlation should be established between this criterion and the PS

criterion, and stated with the results.
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SIST EN 60315-9:1999SIST EN 60315-9:1999
315-9 ©IEC:1996 – 9 –
2 General notes on measurements
2.1 Preliminary measurements

As the results of various measurements described in this part may be influenced by other

properties of the receiver, the related measurements given in IEC 315-1 and IEC 315-4 should

be carried out first.
2.2 Standard signals

Unless otherwise specified, the following standard signals shall be used for the measurements:

2.2.1 Standard measuring signal
– Standard radio-frequency (r.f.) input signal level: 70 dB(fW)
– Standard carrier frequency: 69 MHz, 83 MHz or 98 MHz,
(depending on the tuning range of the receiver,
see IEC 315-4, table 1)
– Stereophonic signal without audio modulation
– Frequency deviation of 19 kHz pilot tone: ±6,75 kHz
or in accordance with the broadcasting system standards
for which the receiver is designed
– Frequency deviation of RDS signal: ±1,20 kHz
– Phase relation to the third harmonic of the pilot tone: 0° ± 1°
– Repetition rate for RDS group type OA: approximately 4/s
2.2.2 Standard measuring signal with AR/ (see note 2)

When it is required to carry out measurements in the presence of an ARI signal, the following

requirements apply, in addition to those in 2.2.1.
– Frequency deviation of ARI signal (carrier only): ±3,50 kHz
– ARI area identification: A
– ARI traffic announcement identification: off
– Phase relation between ARI and RDS subcarriers: 90° ± 1°
– Phase relation between ARI signal and the third harmonic
of the pilot-tone: 0° ± 1°
NOTES

1 Unless otherwise stated, the receiver is tuned to the standard measuring frequency nearest the centre of

the broadcast band for which the receiver is designed (see IEC 315-4, table 1).

2 ARI is the Autofahrer-Rundfunk-Information (broadcast information for motorists), a traffic information

system used in some countries, and which can be broadcast simultaneously with the RDS system from the

same transmitters.
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SIST EN 60315-9:1999SIST EN 60315-9:1999
315-9 © IEC:1996 – 11 –
2.3 RDS data conditions

The RDS data shall consist of an appropriate PI code, a PS name, two AF values and default

values (see annex B, references [1] and [2]) for TP, DI, TA, PTY and M/S, with a maximum

repetition rate for group type OA of four groups per second.
2.4
Standard conditions for measurements

These shall be taken from IEC 315-1 and IEC 315-4. If the receiver has a "regionalization

mode", this shall be switched off. Except where stated, the alternative frequency (AF) mode

shall be switched off.
3 Characteristics and methods of measurement
3.1 RDS sensitivity
3.1.1 Characteristic to be specified

The lowest radio-frequency input signal level for which satisfactory reception (see 1.3.1) is

obtained.
3.1.2 Method of measurement

a) The receiver and the signal source are operated under standard measuring conditions,

according to 2.2, and the correct display of the programme se rvice name is checked.

b) The radio-frequency input signal is switched off, and a new programme service name is

set into the RDS encoder. The new programme se rvice name shall differ from the previous

one in all eight characters.

The radio-frequency input level is then reduced to a lower value, for which a correct

display is not expected, and then switched on again.

d) If satisfactory reception with the new programme service name is not achieved, the

whole sequence is repeated from step b), using a higher radio-frequency input level in

step c).

NOTE — It is necessary to repeat all the steps, because the receiver may have stored pa rts of the second

programme service name correctly at the low input signal level.
This process is repeated up to the radio-frequency input signal level at which
satisfactory reception is achieved, and this level is noted.

f) If required, the measurement may be repeated with an ARI signal present, using the

standard signal specified in 2.2.2.
3.1.3 Presentation of results

The lowest radio-frequency input signal level(s) determined according to steps e) and f) of

3.1.2 shall be stated as RDS sensitivities, in dB(fW).
3.2 RDS deviation sensitivity
3.2.1 Characteristic to be specified

The lowest value of deviation of the main carrier of the radio-frequency input signal by the RDS

subcarrier for which satisfactory reception is achieved.
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SIST EN 60315-9:1999SIST EN 60315-9:1999
315-9©IEC:1996 _13_
3.2.2 Method of measurement

The receiver and the signal source are operated under standard measuring conditions

according to 2.2, and the correct display of the programme service name is checked.

The radio-frequency input signal is switched off, and a new programme service name is

set into the RDS encoder. The new programme service name shall differ from the previous

one in all eight characters.

The RDS frequency deviation is then reduced below the standard value and the radio-

frequency input signal is switched on again.

If satisfactory reception is achieved, the measurement steps a) to d) are repeated with

reduced RDS frequency deviation in each cycle until satisfactory reception is not achieved.

The measurement shall be carried out down to an RDS frequency deviation of ±0,5 kHz.

NOTE — Care should be taken that the lowest value of deviation is not restricted by a receiver design which

applies a deviation-dependent RDS threshold and thus prevents the measurement of deviation sensitivity below

a certain receiver-dependent value. If that is the case, it should be noted with the results.

3.2.3 Presentation of results

The results shall be presented as the peak-to-peak frequency deviation (± x kHz). Values equal

to or less than ±0,5 kHz should be reported as "less than ±0,5 kHz".
3.3
Maximum RDS deviation
3.3.1
Characteristic to be specified

The highest value of deviation of the main carrier of the radio-frequency input signal by the

RDS subcarrier for which satisfactory reception is achieved.
3.3.2 Method of measurement

The method given in 3.2.2 is used, with the difference that in each cycle of measurements, the

RDS frequency deviation is set to an increased value compared with that of the previous cycle.

The measurement shall be carried out up to an RDS frequency deviation of ±7,5 kHz.

3.3.3 Presentation of results

The results shall be presented as the peak-to-peak frequency deviation (± x kHz). Values equal

to or greater than ±7,5 kHz should be reported as "greater than ±7,5 kHz".
3.4 Maximum phase error
3.4.1 Characteristic to be specified

The greatest difference between the actual phase angle of the RDS subcarrier, relative to the

ARI subcarrier (see 2.2.2), and the standard value of 90° for which satisfactory reception is

achieved.
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SIST EN 60315-9:1999SIST EN 60315-9:1999
315-9 © I EC:1996 –15 –
3.4.2
Method of measurement

The receiver and the signal source are operated under standard measuring conditions,

according to 2.2.2, and the correct display of the programme service name is checked.

The radio-frequency input signal is switched off, and a new programme service name is

set into the RDS encoder. The new programme service name shall differ from the previous

one in all eight characters.

The phase angle between the RDS subcarrier and the ARI subcarrier is changed by +10°.

The radio-frequency input signal is then switched on again.

If satisfactory reception is not achieved, the measurement steps a) to d) are repeated

with the phase angle changed by 1° less each time, until satisfactory reception is achieved.

The steps a) to d) shall be repeated with negative phase increments.
If required, the measurements may also be performed with traffic announcement
identification in the ARI signal.
3.4.3 Presentation of results

The results shall be presented as phase differences in degrees. If satisfactory reception is

obtained at phase differences of 10° or more, the values shall be stated as "greater than ±10°".

3.5
Alternative frequency (AF) switching thresholds, time of interruption of
the programme signal and alternative frequency performance features
3.5.1 Characteristics to be specified

The conditions under which an RDS receiver initiates a switch-over to an alternative frequency,

as follows.
switching thresholds to an alternative frequency;

time of interruption while the receiver tests the strength of an alternative signal;

c) alternative frequency pe rformance features:
– rejection of a signal with a different PI code;
– rejection of a signal without RDS modulation;

AF restoration time, for the receiver to accept an alternative signal with the same PI

code.

NOTE — If, as is usual, the AF switching criterion or criteria used by the receiver are not known, it is desirable to

measure the receiver using several of the methods given in 3.5.2, i
...

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