IEC TS 62312-1-1:2018

IEC TS 62312-1-1 ®
Edition 2.0 2018-11
TECHNICAL
SPECIFICATION
Guideline for synchronization of audio and video –
Part 1-1: Measurement methods for synchronization of audio and video
equipment and systems – General

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IEC TS 62312-1-1 ®
Edition 2.0 2018-11
TECHNICAL
SPECIFICATION
Guideline for synchronization of audio and video –

Part 1-1: Measurement methods for synchronization of audio and video

equipment and systems – General

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.160.01 ISBN 978-2-8322-6187-3

– 2 – IEC TS 62312-1-1:2018 © IEC 2018
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 7
3.1 Terms and definitions . 7
3.2 Abbreviated terms . 7
4 Measuring conditions . 7
4.1 General conditions . 7
4.1.1 Power supplies . 7
4.1.2 Environmental conditions . 8
4.2 Specific conditions . 8
4.3 General settings. 8
4.4 Specific settings . 8
5 Measurement methods . 9
5.1 General block diagram . 9
5.2 Test signal source and test signal . 9
5.2.1 General . 9
5.2.2 Signal generator . 9
5.2.3 Test disc . 9
5.3 EUT . 10
5.3.1 Equipment . 10
5.3.2 Compound equipment . 11
5.4 Measuring instruments . 12
5.4.1 General . 12
5.4.2 Measurement of signal. 12
5.4.3 Measurement of reproduced signal . 12
5.4.4 Specific requirement . 13
Annex A (informative) Assessment of the result of measurement . 14
Annex B (informative) General measurement and test method of audio latency . 15
B.1 Measurement . 15
B.2 Test signal . 15
B.3 Test method . 15
Bibliography . 16

Figure 1 – General block diagram for measurement . 9
Figure 2 – Audio and video device . 10
Figure 3 – Source device . 11
Figure 4 – Display device . 11
Figure 5 – Recorder device . 11
Figure 6 – Compound equipment . 12
Figure 7 – Measurement of reproduced signal . 13
Figure B.1 – block diagram of test. 15

Table B.1 – Frequency range of test signal . 15

– 4 – IEC TS 62312-1-1:2018 © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GUIDELINE FOR SYNCHRONIZATION OF AUDIO AND VIDEO –

Part 1-1: Measurement methods for synchronization of audio
and video equipment and systems – General

FOREWORD
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The main task of IEC technical committees is to prepare International Standards. In
exceptional circumstances, a technical committee may propose the publication of a technical
specification when
• the required support cannot be obtained for the publication of an International Standard,
despite repeated efforts, or
• the subject is still under technical development or where, for any other reason, there is the
future but no immediate possibility of an agreement on an International Standard.
Technical specifications are subject to review within three years of publication to decide
whether they can be transformed into International Standards.
IEC TS 62312-1, which is a technical specification, has been prepared by technical area 11:
Quality for audio, video and multimedia systems, of IEC technical committee 100: Audio,
video and multimedia systems and equipment.

This second edition cancels and replaces the first edition published in 2008. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) new Annex B informs of general measurement and test method of audio latency;
b) comments from SMPTE (including small technical issues).
The text of this Technical Specifications is based on the following documents:
Enquiry draft Report on voting
100/3048/DTS 100/3105/RVDTS
Full information on the voting for the approval of this technical specification can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
The list of all the parts of IEC 62312, published under the general title Guideline for
synchronization of audio and video, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• transformed into an International standard,
• reconfirmed,
• withdrawn,
• replac
...