EN 60107-2:1997

SLOVENSKI STANDARD
01-april-1999
Methods of measurement on receivers for television broadcast transmissions --
Part 2: Audio channels - General methods and methods for monophonic channels
(IEC 60107-2:1997)
Methods of measurement on receivers for television broadcast transmissions -- Part 2:
Audio channels - General methods and methods for monophonic channels
Meßverfahren für Empfänger für Fernseh-Rundfunksendungen -- Teil 2: Tonkanäle -
Allgemeine Meßverfahren und Meßverfahren für monophone Kanäle
Méthodes de mesures applicables aux récepteurs de télévision -- Partie 2: Voies son -
Méthodes générales et méthodes pour voies monophoniques
Ta slovenski standard je istoveten z: EN 60107-2:1997
ICS:
33.160.25 Televizijski sprejemniki Television receivers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME
CEI
INTERNATIONALE
IEC
60107-2
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
1997-02
Méthodes de mesure applicables
aux récepteurs de télévision –
Partie 2:
Voies son –
Méthodes générales et méthodes
pour voies monophoniques
Methods of measurement on
receivers for television broadcast
transmissions –
Part 2:
Audio channels –
General methods and methods
for monophonic channels
 IEC 1997 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni utilisée No part of this publication may be reproduced or utilized in
sous quelque forme que ce soit et par aucun procédé, électronique any form or by any means, electronic or mechanical, including
ou mécanique, y compris la photocopie et les microfilms, sans photocopying and microfilm, without permission in writing from
l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http: //www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
PRICE CODE U
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

60107-2 © IEC:1997 – 3 –
CONTENTS
Page
FOREWORD . 7
Clause
1 General. 9
1.1 Scope. 9
1.2 Normative references. 9
1.3 Definitions. 11
1.3.1 Audio channel. 11
2 General notes on measurements. 11
2.1 General conditions. 11
2.2 Audio-frequency input signal. 11
2.2.1 Standard reference frequency . 11
2.2.2 Audiofrequencies for measurements. 11
2.3 Radio-frequency (r.f.) television signal. 13
2.3.1 Carrier levels. 13
2.3.2 Modulation factor. 13
2.3.3 Reference modulation factor . 13
2.4 Radio-frequency input signals. 13
2.5 Measuring system and test instruments . 13
2.5.1 Audio filters. 15
2.5.2 Audio-frequency spectrum analyzer . 15
2.5.3 Audio voltmeter. 15
2.5.4 Psophometer (weighted noise meter). 15
2.6 Standard measuring conditions . 15
2.6.1 Standard r.f. television signal. 15
2.6.2 Standard r.f. input signal levels. 17
2.6.3 Standard output power and voltage. 17
2.6.4 Standard receiver settings. 17
2.7 General methods of measurement . 19
3 Audio-frequency output power.19
3.1 Definition. 19
3.2 Audio-frequency substitute load. 21
3.3 Measurement of audio-frequency output power . 21
4 Audio-frequency characteristics.21
4.1 Amplitude response to audiofrequencies. 21
4.1.1 Audio-frequency response characteristics. 21
4.1.2 Characteristics of tone control or equalizer . 23
4.1.3 Characteristics of loudness control. 23
4.1.4 Volume control characteristic . 25
4.2 Audio-frequency non-linear distortion . 25
4.2.1 Introduction. 25
4.2.2 Total harmonic distortion . 25
4.2.3 Intermodulation. 27

60107-2 © IEC:1997 – 5 –
Clause Page
5 Internally generated interference. 29
5.1 Buzz. 29
5.1.1 Definition. 29
5.1.2 Method of measurement. 29
5.1.3 Presentation of results. 29
5.2 Hum. 31
5.2.1 Definition. 31
5.2.2 Method of measurement. 31
5.2.3 Presentation of results. 31
5.3 Line-scan frequency interference. 31
5.3.1 Definition. 31
5.3.2 Method of measurement. 31
5.4 Amplitude modulation suppression ratio . 33
5.4.1 Definition. 33
5.4.2 Method of measurement. 33
5.4.3 Presentation of results. 33
6 Sensitivity. 35
6.1 Signal-to-noise ratio.35
6.1.1 Definition. 35
6.1.2 Method of measurement. 35
6.1.3 Presentation of results. 35
6.2 Ultimate signal-to-noise ratio. 37
6.2.1 Definition. 37
6.2.2 Method of measurement. 37
6.3 Noise-limited sensitivity. 37
6.3.1 Definition. 37
6.3.2 Method of measurement. 37
6.3.3 Presentation of results. 37
7 Immunity to undesired signals. 37
7.1 Introduction. 37
7.2 Basic method of measurement . 39
7.2.1 Measurement set-up. 39
7.2.2 Measurement procedure. 39
7.3 Presentation of results . 41
Table
1 Preferred frequencies. 43
Figures
1 200 Hz to 15 kHz bandpass filter . 45
2 22,4 Hz to 15 kHz bandpass filter . 45
3 Measurement of amplitude modulation suppression ratio . 47
4 Measurement of signal-to-noise ratio . 47
5 Measurement of wanted-to-unwanted r.f. signal ratio . 49
Annex
A Bibliography. 51

60107-2 © IEC:1997 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_________
METHODS OF MEASUREMENT ON RECEIVERS FOR TELEVISION
BROADCAST TRANSMISSIONS –
Part 2: Audio channels –
General methods and methods for monophonic channels
FOREWORD
1) 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 co-operation 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.
2) 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.
3) The documents produced have the form of recommendations for international use and are publi
...