EN 61120-1:1993

SLOVENSKI STANDARD
01-april-1999
Digital audio tape recorder reel to reel system, using 6,3 mm magnetic tape, for
professional use -- Part 1: General requirements (IEC 61120-1:1991)
Digital audio tape recorder reel to reel system, using 6,3 mm magnetic tape, for
professional use -- Part 1: General requirements
Digitales Tonbandgerät - Spulensystem mit Magnetband 6,3 mm für Studioanwendungen
-- Teil 1: Allgemeines
Système d'enregistrement à bande audionumérique, bobine à bobine, utilisant une
bande magnétique de 6,3 mm, à usage professionnel -- Partie 1: Généralités
Ta slovenski standard je istoveten z: EN 61120-1:1993
ICS:
33.160.30 Avdio sistemi Audio systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEI
NORME
IEC
INTERNATIONALE
1120-1
INTERNATIONAL
Première édition
STANDARD First edition
1991-10
Système d'enregistrement à bande audio-
numérique, bobine à bobine, utilisant une bande
magnétique de 6,3 mm, à usage professionnel
Partie 1:
Généralités
Digital audio tape recorder reel to reel system,
using 6,3 mm magnetic tape, for professional use
Part 1:
General requirements
ght — all rights reserved
CEI 1991 Droits de reproduction réservés — Copyri
©
of this publication may be reproduced or utilized
Aucune partie de cette publication ne peut être reproduite ni No part
in any form or by any means, electronic or mechanical,
utilisée sous quelque forme que ce soit et par aucun procédé,
crofilm, without permission
électronique ou mécanique, y compris la photocopie et les including photocopying and mi
de l'éditeur. in writing from the publisher
microfilms, sans l'accord écrit
Suisse
rnationale 3, rue de Varembé Genève
Bureau central de la Commission Electrotechnique Inte
L
Commission Electrotechnique Internationale CODE PRIX
International Electrotechnical Commission PRICE CODE
IEC
Men nyHapo4Haa 3nenrpoTexHHVecnaa HomHccHc
vigueur • Pour prix, voir catalogue en
i
For price, see current catalogue

1120-1 OIEC - 3 -
CONTENTS
Page
FOREWORD 5
Clause
1 Scope 7
2 Normative references
3 Definitions
3.1 Data flow of a digital audio tape recorder
4 Digital encoding
4.1 Sampling frequency
4.2 Sampling timing
4.3 Quantization
5 Tape speed
6 Tape winding
7 Reel 15
and hub
8 Allocation and dimension of magnetic tracks
9 Assignment and dimension of magnetic tracks
10 Emphasis
11 Auxiliary channels
11.1 Time code channel (sub-track 1)
11.1.1 Time code recording
11.1.2 Recording method
11.2 Auxiliary 19
data channel (sub-track 2)
11.2.1 Recording method
11.3 Auxiliary channels (sub-tracks 3 and 4)
11.3.1 Auxiliary channels 21
for format A
11.3.2 Auxiliary channels for format B 21
11.4 Alignment 21
12 Identification 21
12.1 Format identification 21

1120-1 ©IEC - 5 -
COMMISSION
INTERNATIONAL ELECTROTECHNICAL
DIGITAL AUDIO TAPE RECORDER REEL TO REEL SYSTEM,
USING 6,3 mm MAGNETIC TAPE,
FOR PROFESSIONAL USE
Part 1: General requirements
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.
In order to promote international unification, the IEC expresses the wish that all National Committees
3)
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.
rt of IEC 1120 has been prepared by Sub-Committee 60A: Sound recording, of IEC
This pa
Technical Committee No. 60: Recording.
The text of this part is based on the following documents:
Six Months' Rule Report on Voting
60A(CO)131
60A(CO)124
Full information on the voting for the approval of this pa rt can be found in the Voting Re-
port indicated in the above table.

1120-1 © IEC - 7 -
DIGITAL AUDIO TAPE RECORDER REEL TO REEL SYSTEM,
USING 6,3 mm MAGNETIC TAPE,
FOR PROFESSIONAL USE
Part 1: General requirements
1 Scope
This part of IEC 1120 applies to stereophonic digital audio recording on 6,3 mm wide tape
with stationary heads for professional use. It defines the mechanical and electrical charac-
teristics necessary to ensure the interchangeability of programme recorded digital audio
signal on magnetic tape amongst professional industries.
This standard is presented in three pa rts. Parts 2 and 3 describe two formats usable within
part 1. It is practical to have switchable operation between these two formats. Conse-
quently it is logical to include both in one standard.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute
provisions of this part of IEC 1120. At the time of publication, the editions indicated were
valid. All standards are subject to revision, and pa rties to agreements based on this part
of IEC 1120 are encouraged to investigate the possibility of applying the most recent
editions of the standards indicated below. Members of IEC and ISO maintain registers of
currently valid International Standards.
IEC 94, Magnetic tape sound recording and reproducing systems.
IEC 268-12: 1987, Sound system equipment - Pa rt 12: Application of connectors for broad-
cast and similar use.
IEC 268-15: 1987, Sound system equipment - Part 15: Preferred matching values for inter-
connection of sound system components.
IEC 461: 1986,
Time and control code for video tape recorders.
IEC 899: 1987, Sampling rate and source encoding for professional digital audio
recording.
3 Definitions
For the purpose of this part of IEC 1120, the following de
...