EN 60735:1991

Measuring methods for video tape properties

Describes the measuring methods for evaluation of the properties of magnetic tapes for video recording reproduction. The following properties are considered: - mechanical; - electromagnetic and electrical; - tape on a video tape recorder.

Meßverfahren für die Eigenschaften von Video-Magnetbändern

Méthodes de mesure des propriétés des bandes magnétiques pour magnétoscopes

Décrit les méthodes de mesure permettant d'évaluer les propriétés de bandes magnétiques pour l'enregistrement et la reproduction sur magnétoscope. Les propriétés étudiées sont les suivantes: - mécaniques; - électromagnétiques et électriques; - bande sur magnétoscope.

Measuring methods for video tape properties (IEC 60735:1991)

General Information

• Status: Published
• Publication Date: 28-Oct-1991
• Withdrawal Date: 14-Oct-1992
• Technical Committee: CLC/TC 100X - Audio, video and multimedia systems and equipment and related sub-systems
• Drafting Committee: IEC/TC 100 - IEC_TC_100
• Parallel Committee: IEC/TC 100 - IEC_TC_100
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 29-Oct-1991
• Completion Date: 29-Oct-1991
• Ref Project: SIST EN 60735:1999 - Measuring methods for video tape properties

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60735:1999
01-julij-1999
Measuring methods for video tape properties (IEC 60735:1991)
Measuring methods for video tape properties
Meßverfahren für die Eigenschaften von Video-Magnetbändern
Méthodes de mesure des propriétés des bandes magnétiques pour magnétoscopes
Ta slovenski standard je istoveten z: EN 60735:1991
ICS:
33.160.40 Video sistemi Video systems
SIST EN 60735:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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NORME CEI
IEC
INTERNATIONALE
735
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
1991-09
Méthodes de mesure des propriétés
des bandes magnétiques pour magnétoscopes
Measuring methods for video tape properties
Copyright - all rights reserved
© IEC 1991 Droits de reproduction réservés —
publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
Aucune partie de cette
forme que ce soit et par aucun any form or by any means, electronic or mechanical,
utilisée sous quelque
y compris la photo- including photocopying and microfilm, without permission in
procédé, électronique ou mécanique,
de l'éditeur. writing from the publisher.
copie et les microfilms, sans l'accord écrit
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
e-mail: [e-mail] IEC web site http: //www.iec.ch
Telefax: [phone]
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Pour prix, voir catalogue en vigueur
•
For price, see current catalogue

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735©IEC - 3 -
CONTENTS
Page
FOREWORD 5
Clause
1 Scope 7
2 Normative references 7
3 Testing environment 7
4 Mechanical properties 7
4.1 Tape width 7
4.2 Tape thickness 9
4.3 Tensile tests 9
4.4 Residual elongation 9
4.5 Longitudinal shrinkage 9
4.6 Coefficient of elongation in humidity 9
11
4.7 Transverse cupping
11
4.8 Longitudinal curvature
11
4.9 Coefficient of friction
4.10 Layer-to-layer adhesion 13
4.11 Video head wear 15
5 Electromagnetic and electrical properties 15
5.1 Coercivity H 15
and retentivity Br
5.2 Coating resistance 15
6 Tape properties measured on a video tape recorder 15
6.1 Video properties 15
6.2 Audio properties 21

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735©IEC - 5 -
INTERNATIONAL ELECTROTECHNICAL COMMISSION
MEASURING METHODS
FOR VIDEO TAPE PROPERTIES
FOREWORD
1) The formal decisions or agreements of the IEC on technical matters, prepared by Technical Committees on
which all the National Committees having a special interest therein are represented, express, as nearly as
possible, an international consensus of opinion on the subjects dealt with.
They have the form of recommendations for international use and they are accepted by the National
2)
Committees in that sense.
3) In order to promote international unification, the IEC expresses the wish that all National Committees
should adopt the text of the IEC recommendation for their national rules in so far as national conditions will
permit. Any divergence between the IEC recommendation and the corresponding national rules should, as
far as possible, be clearly indicated in the latter.
This International Standard has been prepared by Sub-Committee 60B: Video recording,
of IEC Technical Committee No. 60: Recording.
This second edition of IEC 735 replaces the first edition, issued in 1982.
The text of this standard is based on the following documents:
DIS Report on Voting
60B(CO)124 60B(CO)136
Full information on the voting for the approval of this standard can be found in the Voting
Report
indicated in the above table.

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735©IEC - 7 -
MEASURING METHODS
FOR VIDEO TAPE PROPERTIES
1 Scope
This standard describes the measuring methods for evaluation of the properties of
magnetic tapes used for video recorders.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute
provisions of this International Standard. At the time of publication, the editions indicated
rties to agreements based on this
were valid. All standards are subject to revision, and pa
International Standard are encouraged to investigate the possibility of applying the most
ISO maintain regis-
recent editions of the standards indicated below. Members of IEC and
ters of currently valid International Standards.
IEC 698: 1981, Measuring methods for television tape machines.
IEC 883: 1987, Measuring method for chrominance signal-to-random noise ratio for video
tape recorders.
IEC 1105: 1991, Reference tapes for video tape recorder systems (being printed).
ISO 468: 1982, Surface roughness - Parameters, their values and general rules for speci-
fying requirements.
ISO/R 527: 19
...