EN 61237-2:1995
(Main)Broadcast video tape recorders - Methods of measurement - Part 2: Electrical measurements of analogue composite video signals
Broadcast video tape recorders - Methods of measurement - Part 2: Electrical measurements of analogue composite video signals
Describes the methods of measurement, test signals and procedures which may apply to characteristics of video recording/playback machines mainly intended for professional use.
Meßverfahren für Videobandgeräte für den Rundfunk - Teil 2: Elektrische Messungen für analoge Composite-Videosignale
Magnétoscopes de radiodiffusion - Méthodes de mesure - Partie 2: Mesures électriques pour les signaux vidéo analogiques composites
Décrit les méthodes de mesure, les signaux et les procédures d'essai qui peuvent s'appliquer aux caractéristiques des appareils d'enregistrement/de lecture vidéo, ces appareils étant principalement destinés à une utilisation professionnelle.
Broadcast video tape recorders - Methods of measurement -- Part 2: Electrical measurements of analogue composite video signals (IEC 61237-2:1995)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 61237-2:1999
01-april-1999
Broadcast video tape recorders - Methods of measurement -- Part 2: Electrical
measurements of analogue composite video signals (IEC 61237-2:1995)
Broadcast video tape recorders - Methods of measurement -- Part 2: Electrical
measurements of analogue composite video signals
Meßverfahren für Videobandgeräte für den Rundfunk -- Teil 2: Elektrische Messungen
für analoge Composite-Videosignale
Magnétoscopes de radiodiffusion - Méthodes de mesure -- Partie 2: Mesures électriques
pour les signaux vidéo analogiques composites
Ta slovenski standard je istoveten z: EN 61237-2:1995
ICS:
33.160.40 Video sistemi Video systems
SIST EN 61237-2:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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CEI
NORME
IEC
INTERNATIONALE
1237-2
INTERNATIONAL
Première édition
STANDARD
First edition
1995-05
Magnétoscopes de radiodiffusion —
Méthodes de mesure —
Partie 2:
Mesures électriques pour les signaux vidéo
analogiques composites
Broadcast video tape recorders —
Methods of measurement —
Part 2:
Electrical measurements of analogue
composite video signals
Copyright — all rights reserved
© CEI 1995 Droits de reproduction réservés —
No part of this publication may be reproduced or utilized in
Aucune partie de cette publication ne peut étre reproduite ni
any form or by any means, electronic or mechanical,
utilisée sous quelque forme que ce soit et par aucun pro-
including photocopying and microfilm, without permission
cédé, électronique ou mécanique, y compris la photocopie et
les microfilms, sans l'accord écrit de l'éditeur. in writing from the publisher.
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1237-2 ©IEC:1995
CONTENTS
Page
FOREWORD 7
Clause
11
1 Scope and object
11
2 Normative references
13 3 General
13
4 Test conditions
15
5 Measuring methods and test signals
15 5.1 Manual and automatic measurements
15
5.2 Measurement of differences between adjacent tracks (fields/segments)
15 5.3 Procedure of measurement
17
5.4 Test signals
17
5.4.1 Introduction
17
5.4.2 Amplitudes and characteristics of test signals
17
5.4.3 Test signal arrangement
19
Measurements of characteristics 6
19
6.1 Amplitude of output signals in E-E mode and playback
19
6.1.1 Luminance bar amplitude error
19 6.1.2 Synchronizing pulse amplitude error
6.1.3 Burst amplitude error 21
6.2 Short and line time distortions 21
6.2.1 K2T factor 21
6.2.2 2T/bar ratio 23
25
6.2.3 Bar tilt
6.2.4 Base-line distortion 25
Chrominance-luminance gain inequality 27
6.3
delay inequality 29
Chrominance-luminance
6.4
31
6.5 Amplitude/frequency characteristics
31
6.5.1 Luminance
31
6.5.2 Chrominance
33
6.6 Non-linear distortions
33
6.6.1 Differential gain
33
6.6.2 Differential gain versus frequency
35
6.6.3 Differential phase
35
6.6.4 Group delay
37
cross-talk/intermodulation Chrominance-luminance
6.7
6.8 Luminance signal-to-noise ratio 39
41
signal-to-noise ratio 6.9 Chrominance
41 6.9.1 Measurement of PAL/NTSC colour video signals
43
SECAM colour video signals
6.9.2 Measurement of
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1237-2 ©IEC:1995
Page
Clause
47
6.10 Field time distortions
47
6.10.1 Vertical tilt
6.11 Long time distortion 49
6.11.1 Signal bounce 49
49
6.11.2 Power supply interference
51
7 Special measurements
51 7.1 FM characteristic frequencies
51
7.2 Non-linear preemphasis
55 7.3 Noise coring
55
7.4 Moiré
57
7.5 Time base errors (measurements before time base error corrector)
57
7.5.1 Velocity errors
7.5.2 Phase step 59
7.5.3 Jitter 59
61
7.5.4 Time base errors after correction
61
7.6 Sc/H phase
Annexes
A - Test signals elements 69
87
B - 625-line systems
105
C - 525-line systems
119
D - Bibliography
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1237-2 © I EC:1995
INTERNATIONAL ELECTROTECHNICAL COMMISSION
BROADCAST VIDEO TAPE RECORDERS —
METHODS OF MEASUREMENT —
Part 2: Electrical measurements of analogue
composite video signals
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 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 tech
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