SIST EN 60843-2:1999

Helical-scan video tape cassette system using 8 mm magnetic tape - 8 mm Video -- Part 2: PCM multi-track audio system

Provides multi-track specifications for PCM audio recording and playback with 8 mm video systems. Applies to both 525 line / 60 field and 625 line / 50 field TV signals.

Videoband-Kassettensystem mit Schrägspuraufzeichnung auf Magnetband 8 mm - 8 mm Video -- Teil 2: PCM-Vielfachspur-Audiosystem

Système de magnétoscope à cassette à balayage hélicoïdal utilisant la bande magnétique de 8 mm - Vidéo 8 mm -- Partie 2: Système audio multipiste MIC

Contient les spécifications multipistes pour l'enregistrement et la lecture audio MIC utilisant les systèmes vidéo 8 mm. Applicable aussi bien aux signaux de télévision 525 lignes/60 trames qu'aux signaux 625 lignes/ 50 trames.

Helical-scan video tape cassette system using 8 mm magnetic tape - 8 mm Video -- Part 2: PCM multi-track audio system (IEC 61119-5:1993)

General Information

• Status: Published
• Publication Date: 31-Mar-1999
• 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-Apr-1999
• Due Date: 01-Apr-1999
• Completion Date: 01-Apr-1999
• Ref Project: EN 60843-2:1995 - Helical-scan video tape cassette system using 8 mm magnetic tape - 8 mm Video - Part 2: PCM multi-track audio system

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60843-2:1999
01-april-1999
Helical-scan video tape cassette system using 8 mm magnetic tape - 8 mm Video --
Part 2: PCM multi-track audio system (IEC 61119-5:1993)
Helical-scan video tape cassette system using 8 mm magnetic tape - 8 mm Video -- Part
2: PCM multi-track audio system
Videoband-Kassettensystem mit Schrägspuraufzeichnung auf Magnetband 8 mm - 8 mm
Video -- Teil 2: PCM-Vielfachspur-Audiosystem
Système de magnétoscope à cassette à balayage hélicoïdal utilisant la bande
magnétique de 8 mm - Vidéo 8 mm -- Partie 2: Système audio multipiste MIC
Ta slovenski standard je istoveten z: EN 60843-2:1995
ICS:
33.160.40 Video sistemi Video systems
SIST EN 60843-2:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60843-2:1999

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SIST EN 60843-2:1999

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SIST EN 60843-2:1999

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SIST EN 60843-2:1999

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SIST EN 60843-2:1999

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SIST EN 60843-2:1999
CEl
NORME
IEC
INTERNATIONALE
1119-5
INTERNATIONAL
Première édition
STANDARD
First edition
1993-05
à cassette (DAT)
Système audionumérique
Partie 5:
DAT pour usage professionnel
Digital audio tape cassette system (DAT)
Part 5:
DAT for professional use
ght — all rights reserved
de reproduction réservés — Copyri
© CEI 1993 Droits
ne peut être reproduite ni No part of this publication may be reproduced or utilized
Aucune partie de cette publication
cédé, in any form or by any means, electronic or mechanical,
utilisée sous quelque forme que ce soit et par aucun pro
les including photocopying and microfilm, without permission
électronique ou mécanique, y compris la photocopie et
in writing from the publisher
crofilms, sans l'accord écrit de l'éditeur. mi
Genève Suisse
Bureau central de la Commission Electrotechnique Internationale 3, rue de Varembé
Commission Electrotechnique Internationale CODE PRIX
International Electrotechnical Commission PRICE CODE
IEC
MewlzyHapoAHac 3neKTpoTexHH4ecHaR KOMHCCHA
Pour prix, voir catalogue en vigueur
•
For price, see current catalogue

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SIST EN 60843-2:1999
1119-5 ©IEC:1993 – 3 –
CONTENTS
Page
FOREWORD 5
Clause
1 Scope and object 7
2 Normative references 7
Description of the system 7
3
9
Track configuration and pattern 6
9
6.1 Track configuration
9
6.1.1 Tape speed and number of tracks per second
9
11 Audio encoding
9
11.1 Mode application
9
11.1.1 Audio encoding mode
9
11.1.2 System application
11.2 Source encoding 9
11.2.1 Pre-emphasis 9
11.2.2 Number of audio channels 9
11.2.3 Sampling frequency 9
11
11.2.4 Sampling timing
11
11.2.5 Quantization
11
11.3 Word to symbol conversion
11.3.1 Audio data word 11
11
11.3.2 48k mode, 44k mode and 32k mode
11
11.4 Interleave format
11.4.1 48k mode, 44k mode and 32k mode. 11
13
12 Subcode encoding for audio use
12.1 Subcode in main ID 13
13
12.1.1 Bit assignment of ID1 to ID7
13
12.3 Subcode in subdata
13
12.3.4 Professional time and control code recording
15
12.3.4.1 Pro R Time pack
27
12.3.4.2 Pro binary pack
12.3.4.3 Alignment of Pro DAT time and control code to
33
audio signal
33 12.4 Subcode in main data
33
12.5 Application rules of subcode for pre-recorded tape
35
Annex A – Advice for the professional applications of DAT

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SIST EN 60843-2:1999
1119-5 ©IEC:1993 - 5 -
INTERNATIONAL ELECTROTECHNICAL COMMISSION
DIGITAL AUDIO TAPE CASSETTE SYSTEM (DAT)
Part 5: DAT for professional use
FOREWORD
The IEC (International Electrotechnical Commission) is a worldwide organization for standardization
1)
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 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, 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 published in the form of standards, technical
3)
reports or guides and they are accepted by the National Committees in that sense.
In order to promote international unification, IEC National Committees undertake to apply IEC International
4)
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
International Standard IEC 1119-5 has been prepared by sub-committee 60A: Sound
recording, of IEC technical committee 60: Recording.
The text of this standard is based on the following documents:
DIS Repo rt on Voting
60A(CO)150
60A(CO)138
Full information on the voting for the approval of this standard can be found in the report
on voting indicated in the above table.
IEC 1119 consists of the following parts, under the general title: Digital audio tape
cassette system (DAT):
- Part 1: 1992, Dimensions and characteristics
Part 2: 1991, DAT calibration tape
-
- Part 3: 1992, DAT tape properties
Part 5: 1993, DAT for professional use
-
- Part 6: 1992, Serial copy management system
Annex A is for information only.
Part 4 is under consideration.

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SIST EN 60843-2:1999
1119-5 ©IEC:1993 - 7 -
AUDIO TAPE CASSETTE SYSTEM (DAT)
DIGITAL
Part 5: DAT for professional use
Explanatory notes
Digital
IEC 1119-5 shall be used in conjunction with the first edition (1992) of IEC 1119-1:
audio tape cassette system (DAT) - Part 1: Dimensions and characteristics.
The clause numbers of this Part 5 corresponds to those in IEC 1119-1, and any text given
in this Part 5 shall modify the text given in IEC 1119-1. Absence of text in this Part 5
indicates that the provisions of the relevant clause in IEC 1119-1 shall apply.
1 Scope and object
This part of IEC 1119 applies to professional use of the digital audio tape cassette system
(DAT) for recording and/or reproducing digital audio signals. It defines the mechanical and
electrical characteristics necessary to ensure full interchangeability between software
and hardware in any geographical location.
2 Normative references
The following normative documents contain provisions which, through reference in this
text, constitute provisions of this part of IEC 1119. At the time of publication, the editions
indicated were valid. All normative documents are subject to revision, and parties to agree-
ments based on this part of IEC 1119 are encouraged to investigate the possibility of
applying the most recent editions of the normative documents indicated below. Members
of IEC and ISO maintain registers of currently valid International Standards.
IEC 461: 1986, Time and control code for video tape recorders
Digital audio interface
IEC 958: 1989,
rt 1: Dimensions and
Digital audio tape cassette system (DAT) - Pa
IEC 1119-1: 1992,
characteristics
3 Description of the system
The information carrier is a magnetic tape of 3,81 mm width wound on flangeless hubs
which are located in a cassette containing a slider and a lid to protect the tape from
accidental damage. The tape is of the metal powder type or its equivalent. The digital

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SIST EN 60843-2:1999
1119-5 ©IEC:1993 - 9 -
information is recorded using the helical scanning principle and can be erased by over-
writing.
The digital information is read by magnetic heads using an automatic track finding (ATF)
scheme for following the tracks.
6 Track configuration and pattern
Track configuration
6.1
6.1.1 Tape speed and number of tracks per second
The speed of the magnetic tape shall be 8,150 mm/s ± 0,5% and the number of tracks
recorded per second shall be 200/3.
11 Audio encoding
11.1 Mode application
11.1.1 Audio encoding mode
Three audio encoding modes are specified. These modes are called the 48k mode, the
44k mode and the 32k mode.
11.1.2 System application
The 48k mode is mandatory. The 44k mode and 32k mode are optional.
11.2 Source encoding
11.2.1 Pre-emphasis
In general the use of pre-emphasis is not recommended. If pre-emphasis is applied, it
shall be identified on the tape and shall have the same characteristics as IEC 1119-1.
11.2.2 Number of audio channels
Two channels of the audio signal, indicated as A and B, can be recorded in the 48k mode,
44k mode and 32k mode.
The channels A and B correspond to left and right channels respectively, in stereophonic
use.
11.2.3 Sampling frequency
The accuracy of the sampling frequency at the encoding shall be within ±50.10 -6.

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SIST EN 60843-2:1999
1119-5 ©IEC:1993 - 11 -
11.2.4
Sampling timing
The two channels shall be sampled simultaneously.
11.2.5 Quantization
Each audio sample shall be quantized linearly and be expressed in 16 bits only, 2's
complement notation.
11.3 Word to symbol conversion
11.3.1 Audio data word
The audio data word is comprised of a 16-bit code only. The i-th sample of the audio word
is expressed as A i and Bi corresponding to audio channel A and B, respectively.
11.3.2 48k mode, 44k mode and 32k mode
Identical to IEC 1119-1.
11.4 Interleave format
11.4.1 48k mode, 44k mode and 32k mode
Identical to IEC 1119-1.

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SIST EN 60843-2:1999
1119-5 ©I EC:1993 – 13 –
12 Subcode encoding for audio use
12.1 Subcode in main ID
12.1.1 Bit assignment of ID1 to ID7
Usage Bit assignment
ID1 Pre-emphasis B5 B4
0 0 off
0 1 50/15 μs
1 0 reserved
1 1 reserved
ID2 Sampling B7 B6
frequency 0 0 48 kHz
44,1 kHz
o 1
1 0 32 kHz
1 reserved
1
ID3 Number of 135 84
channels 0 0 2 channels
0 1 reserved
1 0 reserved
1 1 reserved
ID4 Quantization B7 B6
0 0 16 bits linear
reserved
o 1
1 0 reserved
reserved
1 1
ID5 Track pitch B5 B4
0 normal track mode
0
0 1 reserved
1 0 reserved
1 1 reserved
B6
ID6 Digital copy B7
0 0 permitted
0 1 reserved
1 0 prohibited
reserved
1 1
ID7 Pack B5 B4
Pack contents
12.3 Subcode in subdata
12.3.4 Professional time and control code recording
Time and control code of IEC 461 or the channel status data for professional use of
IEC 958 (hereinafter called Pro DIO channel status) are transformed into Pro DAT time
and control code, and this Pro DAT time and control code is recorded in the subdata area
in the form of packs on a DAT tape. When it is played back, the Pro DAT time and control
code from the tape is re-transformed back into IEC time and control code and/or Pro DIO
channel status. The time information of lEC 461 is hereinafter called IEC time address.

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SIST EN 60843-2:1999
1119-5 ©IEC:1993 – 15 –
The time information (local sample address code or time-of-day sample address code) of
Pro DIO channel status is called Pro DIO sample address code.
The remaining data (except time information of IEC 461 or Pro DIO channel status) is
hereinafter called the non-time information.
Pro DAT time and control code consists of two packs. One is Pro R Time pack, which
carries the IEC time address or Pro DIO sample address code. The other is Pro binary
pack, which carries the non-time information of IEC 461 or Pro DIO channel status.
To identify the time and control code, subpack items are defined as follows.
12.3.4.1 Pro R Time pack
12.3.4.1.1 Pro R Time pack format
Pack item = 0011 PC1,B3 = 1: Pro R Time
IEC time address and Pro DIO sample address code are recorded in this pack.
Subpack item (PC1 B1,B0) is used for the identification of the time information of Pro DAT
time and control code recorded
...