SIST EN 60094-7:1999

SLOVENSKI STANDARD
SIST EN 60094-7:1999
01-april-1999
Magnetic tape sound recording and reproducing systems -- Part 7: Cassette for
commercial tape records and domestic use (IEC 60094-7:1986)
Magnetic tape sound recording and reproducing systems -- Part 7: Cassette for
commercial tape records and domestic use
Systeme für Tonaufzeichnung und -wiedergabe auf Magnetband -- Teil 7:
Magnetbandkassette für vorbespieltes Band und für Heimanwendung
Systèmes d'enregistrement et de lecture du son sur bandes magnétiques -- Partie 7:
Cassette pour enregistrements du commerce et à usage grand public
Ta slovenski standard je istoveten z: EN 60094-7:1993
ICS:
33.160.30 Avdio sistemi Audio systems
SIST EN 60094-7:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60094-7:1999

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SIST EN 60094-7:1999

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SIST EN 60094-7:1999

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SIST EN 60094-7:1999

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SIST EN 60094-7:1999

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SIST EN 60094-7:1999
NORME CEI
INTERNATIONALE IEC
60094-7
INTERNATIONAL
Première édition
STAN DARD
First edition
1986-01
Systèmes d'enregistrement
et de lecture du son
sur bandes magnétiques —
Septième partie:
Cassette pour
enregistrements du commerce
et à usage grand public
Magnetic tape sound recording and reproducing
systems —
Part 7:
Cassette for commercial tape records and
domestic use
© IEC 1986 Droits
de reproduction réservés — Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni
No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun
any form or by any means, electronic or mechanical,
procédé, électronique ou mécanique, y compris la photo-
including photocopying and microfilm, without permission in
copie et les microfilms, sans l'accord écrit de l'éditeur.
writing from 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
M
PRICE CODE
International Electrotechnical Commission
IEC
MerHayHaponHae 3nenrporexHHVecnan HoMHccHR
Pour prix, voir catalogue en vigueur
• •
For price, see current catalogue

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SIST EN 60094-7:1999
— 3 —
94-7 © IEC 1986
CONTENTS
Page
5
FOREWORD
PREFACE 5
EXPLANATORY NOTES 9
SECTION ONE — GENERAL
Clause
9
1. Scope
SECTION Two — MECHANICAL REQUIREMENTS
9
12. Mechanical requirements and dimensions of cassette recording systems
11
12.1 Label area
11
Window 12.2
11
Sensing holes 12.3
11
12.4 Tape path and guides
13
12.5 Friction in the cassette
13
12.6 Tape tensile strength
Strength of tape-hub connection 13
12.7
13
12.8 Pressure pad
13
12.9 Cassette support areas
13
12.10 Capstan diameter
13
13. Designation of magnetic tracks
13
14. Allocation and dimensions of magnetic tracks
13
14.1 Dimensions and position
15
14.2 Utilisation
SECTION THREE — ELECTRICAL REQUIREMENTS
SECTION FOUR — TAPE AND PROGRAMME IDENTIFICATION
15
19.3 Unrecorded domestic cassettes
16
FIGURES
25
APPENDIX A — Identification of cassettes

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SIST EN 60094-7:1999
— 5 —
94-7 © I EC 1986
INTERNATIONAL ELECTROTECHNICAL COMMISSION
MAGNETIC TAPE SOUND RECORDING
AND REPRODUCING SYSTEMS
Part 7: Cassette for commercial tape records and domestic use
FOREWORD
I) The formal decisions or agreements of the I EC 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.
2) They have the form of recommendations for inte rnational use and they are accepted by the National Committees in that
sense.
rnational unification, the I E C expresses the wish that all National Committees should adopt the text of
3) In order to promote inte
the I EC recommendation for their national rules in so far as national conditions will permit. Any divergence between the I E C
recommendation and the corresponding national rules should, as far as possible, be clearly indicated in the latter.
4) The I E C has not laid down any procedure concerning marking as an indication of approval and has no responsibility when an
item of equipment is declared to comply with one of its recommendations.
PREFACE
This standard has been prepared by Sub-Committee 60A: Sound Recording, of I EC Technical Com-
mittee No. 60: Recording.
The text of this standard is based on the following documents:
Six Months' Rule Report on Voting Two Months' Procedure Report on Voting
60A(CO)64
60A(CO)53 60A(CO)60 60A(CO)66
60A(CO)59
60A(CO)55
60A(CO)72 60A(CO)76
60A(CO)80 60A(CO)93
rts on Voting indicated in the table above.
Further information can be found in the relevant Repo
The following I EC publications are quoted in this standard:
Publication Nos. 94-1 (1981): Magnetic Tape Sound Recording and Reproducing Systems. Pa rt 1: General Conditions and
Requirements.
5: Electrical Magnetic Tape Properties. (In preparation.)
94-5 ( — ): Pa rt
I EC Publication 94 and its supplements are under revision. The new I EC Publication 94 will be issued in several pa rts, of
7.
which this is Part
It will have the following parts:
Part 1: General conditions and requirements
General: electrical requirements for the magnetic tape recording and reproducing systems; mechanical requirements for the
magnetic tape; tape identification; programme identification (Fourth edition).
Part 2: Calibration tapes
Minimum requirements for calibration tapes for making adjustments and comparative assessments of the reproducing
performance (First edition 1975).

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SIST EN 60094-7:1999
-7 - 7 -
94 © IEC 1986
Part 3: Methods
of measuring the characteristics of recording and reproducing equipment for sound on magnetic tape
(First edition 1979)
Part 4: Mechanical magnetic tape properties
Characteristics to be specified and relevant methods of measurement. Equipment to be used to determine the mechanical
properties of magnetic tapes.
Part 5: Electrical magnetic tape properties
Characteristics to be specified, methods of measurement and equipment to be used for the determination of the electrical
properties of magnetic tape for analogue sound recording and reproduction.
Pail 6: Reel-to-reel systems
Mechanical requirements and dimensions, including reels, hubs and relevant track allocations.
Part 7: Cassette for commercial tape records and domestic use
Mechanical requirements and dimensions, including track allocations (based on I EC Publication 94A, First edition 1972).
Part 8: Eight-track magnetic tape cartridge for commercial tape records and domestic use
Mechanical requirements and dimensions, including track allocation (based on I EC Publication 94B, First edition 1974).
Part 9: Magnetic tape cartridge for professional use
Mechanical requirements and dimensions, including track allocation.
Part 10: Time and address codes.
(In preparation.)

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SIST EN 60094-7:1999
I EC 1986 — 9 —
94-7 ©
MAGNETIC TAPE SOUND RECORDING
AND REPRODUCING SYSTEMS
e for commercial tape records and domestic use
Part 7: Casse tt
EXPLANATORY NOTES
I EC
This Part 7 of I EC Publication 94 shall be used in conjunction with the fourth edition (1981) of
rt 1: General Condi-
Publication 94-1: Magnetic Tape Sound Recording and Reproducing Systems, Pa
tions and Requirements.
rt correspond to those in I EC Publication 94-1 and any text given in this
The clause numbers in this pa
rt shall modify the text given in I EC Publication 94-1. Absence of text in this part indicates that the
pa
provisions of the relevant clause in I EC Publication 94-1 apply.
SECTION ONE — GENERAL
1. Scope
This part applies only to cassette recording and reproducing systems.
SECTION TWO — MECHANICAL REQUIREMENTS
12. Replacement:
tte recording systems
Mechanical requirements and dimensions of casse
Constructional data which standardize the cassette to secure interchangeability of cassettes on
any cassette recorder or player are given in Figures 1 to 12, pages 16 to 24.
The X-, Y- and Z-reference planes in the figures have been defined as follows:
The Z-reference plane is the plane established by three points which are positioned half of the
distance between three reference areas U, V and W on one cassette side and three correspond-
ing ones on the other side (see Figure 9, page 22).
The X-reference plane per cassette side is defined as the common tangential plane at the rear
of both positioning holes per side, perpendicular to the Z-reference plane.
The Y-reference plane is defined perpendicular to the relevant X - and the Z-reference plane
and is situated at the mid-point of the centres of the reference holes (see Section D-D in
Figure 2, page 17).
These definitions show that a cassette can fulfil the dimensional requirements in this standard only on the
Note. —
basis of two X-reference planes and two Y-reference planes.
Furthermore, the following requirements shall apply:

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SIST EN 60094-7:1999
IEC 1986 — 11 —
94-7 ©
12.1 Label area
The label area shall not exceed the dimensions given in Figure 9, page 22. The maximum allow-
able depression in the thickness of the cassette in that area, measured including label is given for
each support plane.
Window (optional)
12.2
The maximum window area shall be in accordance with the dimensions given in Figure 10,
page 23. The maximum allowable increase in cassette thickness (required, for example, to accom-
modate marks indicating amount of wound and unwound tape) is given for each support plane.
12.3 Sensing holes
12.3.1 Erasure preventing sensing holes
When a break-out lug is removed erasure of the corresponding tracks is prevented. The relation-
ship between cassette sides, break-out lugs and tracks is given in Figure 11, page 24. The dimensions
of the lug holes are given in Figure 2, page 17.
However, it is not necessary that the lugs be attached as drawn, but only that the space between
lug and hole edges shall not exceed 1 mm. The lugs shall withstand a force of 3 N (about 300 g)
applied to point P in Figure 11.
12.3.2 Sensing holes for IEC type I tapes
Cassettes to be recorded and/or reproduced with time constants of 120 ps and 3 180 ps are only
provided with erasure preventing sensing holes.
12.3.3 Sensing holes for IEC type II and IEC type IV high resolution tapes
The holes next to the erasure preventing sensing holes serve to change the time constants of
120 ps to 70 ps (type II and type IV) and
...