SIST EN 62122:2003

Methods of measurement for consumer-use digital VTRs - Electronic and mechanical performances

Specifies the basic methods of measurement for evaluating the electronic and mechanical performance of consumer-use digital VTRs. Enables checks of the interchangeability and characteristics of the equipment under test and enables evaluation of the quality of image and sound.

Messverfahren für digitale Videobandgeräte für den Heimgebrauch - Elektrische und mechanische Leistungsfähigkeit

Méthodes de mesure pour les magnétoscopes numériques destinés au grand public - Performances électroniques et mécaniques

Specifies the basic methods of measurement for evaluating the electronic and mechanical performance of consumer-use digital VTRs. Enables checks of the interchangeability and characteristics of the equipment under test and enables evaluation of the quality of image and sound.

Methods of measurement for consumer-use digital VTRs - Electronic and mechanical performances (IEC 62122:2002)

General Information

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.160.40 - Video systems
• Technical Committee: AVM - Audio, video and multimedia systems and equipment
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: EN 62122:2002 - Methods of measurement for consumer-use digital VTRs - Electronic and mechanical performances

Standards Content (Sample)

SLOVENSKI SIST EN 62122:2003

STANDARD
december 2003
Methods of measurement for consumer-use digital VTRs - Electronic and
mechanical performances (IEC 62122:2002)
ICS 33.160.40 Referenčna številka
SIST EN 62122:2003(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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EUROPEAN STANDARD EN 62122
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2002
ICS 33.160.40
English version
Methods of measurement for consumer-use digital VTRs -
Electronic and mechanical performances
(IEC 62122:2002)
Méthodes de mesure Messverfahren für digitale
pour les magnétoscopes numériques Videobandgeräte für den Heimgebrauch -
destinés au grand public - Elektrische und mechanische
Performances électroniques Leistungsfähigkeit
et mécaniques (IEC 62122:2002)
(CEI 62122:2002)
This European Standard was approved by CENELEC on 2002-05-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands,
Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62122:2002 E

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EN 62122:2002 - 2 -
Foreword
The text of document 100/452/FDIS, future edition 1 of IEC 62122, prepared by IEC TC 100, Audio,
video and multimedia systems and equipment, was submitted to the IEC-CENELEC parallel vote and
was approved by CENELEC as EN 62122 on 2002-05-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-02-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-05-01
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annex A is informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 62122:2002 was approved by CENELEC as a European
Standard without any modification.
__________

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- 3 - EN 62122:2002
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
1)
IEC 60094-3 1979 Magnetic tape sound recording and EN 60094-3 1996
reproducing systems
Part 3: Methods of measuring the
characteristics of recording and
reproducing equipment for sound on
magnetic tape
IEC 60386 1972 Method of measurement of speed--
fluctuations in sound recording and
reproducing equipment
IEC 60883 1987 Measuring method for chrominance HD 527 S1 1989
signal-to-random noise ratio for video
tape recorders
IEC 61041-1 1990 Non-broadcast video tape recorders - EN 61041-1 1995
Methods of measurement
Part 1: General video (NTSC/PAL) and
audio (longitudinal) characteristics
IEC 61041-5 1997 Part 5: High-band video tape recorders, EN 61041-5 1997
including those equipped with Y/C video
connectors (NTSC/PAL)
IEC 61834 Series Recording - Helical-scan digital video EN 61834 Series
cassette recording system using 6,35
mm magnetic tape for consumer use
(525-60, 625-50, 1125-60 and 1250-50
systems)
ITU-R 1986 Nomenclature and description of colour--
Recommendation bar signals
BT.471-1
ITU-R 2000 Methodology for the subjective --
Recommendation assessment of the quality of television
BT.500-10 pictures

1)
EN 60094-3 includes A1:1980 + A2:1988 to IEC 60094-3.

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EN 62122:2002 - 4 -
Publication Year Title EN/HD Year
ITU-R 1995 Measuring methods for digital video--
Recommendation equipment with analogue input/output
BT.1204

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INTERNATIONAL IEC
STANDARD
62122
First edition
2002-03
Methods of measurement for
consumer-use digital VTRs –
Electronic and mechanical performances
Méthodes de mesure pour les magnétoscopes
numériques destinés au grand public –
Performances électroniques et mécaniques
 IEC 2002  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail]  Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
X
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

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– 2 – 62122  IEC:2002(E)
CONTENTS
FOREWORD.7
1 Scope and object .8
2 Normative references.8
3 Terms and definitions .9
4 Measuring conditions .10
4.1 General .10
4.2 Environmental conditions .10
4.3 Power supply.10
4.4 Test signal.10
4.4.1 Video test signal .10
4.4.2 Colour bar signal .11
4.4.3 Video input signal for measuring audio characteristics.11
4.5 Measuring instruments.11
4.5.1 Noise meter .11
4.5.2 Audio signal generator .11
4.5.3 Audio level meter .11
4.5.4 Audio mixed frequency oscillator .12
4.5.5 Audio harmonic distortion meter.12
4.6 Video test tape .12
5 Methods of measurement for mechanical characteristics .12
5.1 General .12
5.2 Tape speed .12
5.2.1 Test signal.12
5.2.2 Measurement.12
5.2.3 Presentation of the results .13
5.3 Flatness of the RF envelope .13
5.3.1 Test signal.13
5.3.2 Block diagram.13
5.3.3 Measurement.13
5.3.4 Presentation of the result .14
5.4 Linearity .14
5.4.1 Test signal.14
5.4.2 Measurement.14
5.4.3 Presentation of the results .15
5.5 Effective area starting position.15
5.5.1 Test signal.15
5.5.2 Measurement.15
5.5.3 Presentation of the results .15
5.6 Track displacement measurement by image processing .15
5.6.1 Measurement system .15
5.6.2 Image processing technique.15
5.6.3 Measuring results .16

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62122  IEC:2002(E) – 3 –
6 Video characteristics (analogue input/output) .17
6.1 General .17
6.2 Luminance amplitude frequency response.17
6.2.1 Test signal.17
6.2.2 Block diagram.17
6.2.3 Measurement.17
6.2.4 Presentation of results .18
6.3 Chrominance amplitude frequency response .18
6.3.1 Test signal.18
6.3.2 Block diagram.18
6.3.3 Measurement.18
6.3.4 Presentation of results .18
6.4 Luminance diagonal resolution.19
6.5 Luminance frequency characteristics of diagonal resolution (i) .19
6.6 Luminance frequency characteristics of diagonal resolution (ii).19
6.7 Luminance non-linear distortion .19
6.8 Luminance waveform distortion (linear distortion).19
6.9 Chrominance waveform distortion .19
6.9.1 Test signal.19
6.9.2 Block diagram.19
6.9.3 Measurement.19
6.9.4 Presentation of results .20
6.10 Luminance vertical waveform distortion.20
6.11 Chrominance vertical waveform distortion .20
6.12 Automatic Gain Control (AGC) operation.20
6.13 Chrominance to luminance horizontal displacement .20
6.14 Chrominance to luminance vertical displacement .20
6.15 Luminance signal-to-noise ratio .20
6.15.1 General .20
6.15.2 Test signal.21
6.15.3 Block diagram.21
6.15.4 Measurement.21
6.15.5 Presentation of the results .22
6.16 Chrominance signal-to-noise ratio.22
6.16.1 General .22
6.16.2 Test signal.22
6.16.3 Block diagram.22
6.16.4 Measurement.23
6.16.5 Presentation of the results .23
7 Composite signal decoding characteristics (luminance and chrominance separation).24
7.1 Luminance signal separation (general).24
7.2 Luminance signal separation at colour change points .24
7.3 Chrominance signal separation .24
7.4 Chrominance signal separation with three dimensional processing .24
7.4.1 Test signal.24
7.4.2 Block diagram.24
7.4.3 Measurement.24
7.4.4 Presentation of results .25

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– 4 – 62122  IEC:2002(E)
7.5 Luminance signal separation with three dimensional signal processing.25
7.5.1 Test signal.25
7.5.2 Block diagram.25
7.5.3 Measurement.25
7.5.4 Presentation of results .25
8 Audio characteristics (analogue input/output) .25
8.1 General .25
8.2 Audio operational output voltage (with AGC) .26
8.2.1 Test signal.26
8.2.2 Block diagram.26
8.2.3 Measurement.26
8.2.4 Presentation of results .26
8.3 Audio operational input voltage (without AGC).26
8.3.1 Test signal.26
8.3.2 Block diagram.26
8.3.3 Measurement.26
8.3.4 Presentation of results .26
8.4 Audio maximum output voltage .26
8.4.1 Test signal.26
8.4.2 Block diagram.27
8.4.3 Measurement.27
8.4.4 Presentation of results .27
8.5 Amplitude frequency response .27
8.5.1 Test signal.27
8.5.2 Measurement.27
8.6 Phase difference between channels .27
8.6.1 Test signal.27
8.6.2 Measurement.27
8.6.3 Presentation of results .27
8.7 Signal-to-noise ratio.27
8.8 Dynamic range .27
8.8.1 Test signal.27
8.8.2 Measurement.28
8.8.3 Presentation of results .28
8.9 Harmonic distortion.28
8.10 Inter-modulation distortion .28
8.10.1 Test signal.28
8.10.2 Measurement.28
8.10.3 Presentation of result.28
8.11 Channel separation.28
8.11.1 Test signals .28
8.11.2 Measurement.28
8.11.3 Presentation of results .28
8.12 Wow-flutter.29
8.13 Pitch difference between record and playback.29
8.13.1 Test signal.29
8.13.2 Measurement.29
8.13.3 Presentation of results .29
9 Classification of the characteristics to be specified.29

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62122  IEC:2002(E) – 5 –
Annex A (informative) Error rate .44
A.1 Definition .44
A.2 Block diagram .44
A.3 Measurement.44
A.4 Presentation of the results.45
A.5 Example 1.45
A.6 Example 2.45
Bibliography .47
Figure 1 – Basic block diagram of measurement system.30
Figure 2 – Measuring method for track interval .30
Figure 3 – Measuring block diagram for RF envelope flatness.31
Figure 4 – Measuring method for RF envelope flatness.31
Figure 5 – Cross-tape track height for DV format .31
Figure 6 – Cross-tape track height for D-VHS format .32
Figure 7 – Measuring method for linearity.32
Figure 8 – Measuring method for the starting position.32
Figure 9 – Block diagram of the measurement system .33
Figure 10 – Schematic diagram of the image processing technique.34
Figure 11 – Illustration of track displacement distribution (model) .35
Figure 12 – Example of calculation results.35
Figure 13 – Test signal for luminance amplitude frequency response .36
Figure 14 – Measuring block diagram for composite video signal .36
Figure 15 – Measuring block diagram for S video signal.36
Figure 16 – Test signal for chrominance amplitude frequency response .37
Figure 17 – Test signal for luminance non-linear distortion.37
Figure 18 – Test signal for luminance waveform distortion .37
Figure 19 – Test signal for chrominance waveform distortion .38
Figure 20 – Measuring method for chrominance waveform distortion .38
Figure 21 – Composite video test signal for luminance signal-to-noise ratio .39
Figure 22 – S luminance test signal for luminance signal-to-noise ratio .39
Figure 23 – S chrominance test signal for luminance signal-to-noise ratio .39
Figure 24 – Block diagram for composite video input .39
Figure 25 – Block diagram for S video input.40
Figure 26 – Composite video test signal for chrominance signal-to-noise ratio .40
Figure 27 – S luminance test signal for chrominance signal-to-noise ratio .40
Figure 28 – S chrominance test signal for chrominance signal-to-noise ratio .41
Figure 29 – Test signal for 3D chrominance signal separation.41
Figure 30 – Measuring block diagram for chrominance signal separation .41
Figure 31 – Measuring method for 3D chrominance signal separation .42
Figure 32 – Test signal for 3D luminance signal separation.42
Figure 33 – Measuring block diagram for luminance signal separation .42

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– 6 – 62122  IEC:2002(E)
Figure 34 – Measuring method for 3D luminance signal separation .43
Figure 35 – Block diagram for audio characteristics .43
Figure A 1 – Structure of Data-synchronisation blocks .46
Figure A 2 – Structure of DV format data-synchronisation blocks .46
Figure A 3 – Structure of D-VHS format data-synchronisation blocks .46
Table 1 – Setting of the colour noise meter for luminance measurement .21
Table 2 – Example: white level of test signal (8 bit system) .22
Table 3 – Setting of the colour noise meter for chrominance measurement .23
Table 4– Example: Chrominance level of test signal (8 bit system) .23
Table 5 – Classification of the characteristics to be specified .29

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62122  IEC:2002(E) – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
METHODS OF MEASUREMENT FOR CONSUMER-USE DIGITAL VTRs –
ELECTRONIC AND MECHANICAL PERFORMANCES
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 o
...