EN 62330-1:2004

SLOVENSKI SIST EN 62330-1:2004

STANDARD
september 2004
Digitalni videokasetni snemalni sistem z zapisovanjem s poševnimi sledmi na
12,65 mm (0,5 in) magnetskem traku – Format HD-D5 –1. del: VTR-
specifikacije (IEC 62330-1:2003)
Helical-scan digital video cassette recording system using 12,65 mm (0,5 in)
magnetic tape - Format HD-D5 - Part 1: VTR specifications (IEC 62330-1:2003)
ICS 33.160.40 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 62330-1
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2004
ICS 33.160.40; 35.240.99
English version
Helical-scan digital video cassette recording system
using 12,65 mm (0,5 in) magnetic tape -
Format HD-D5
Part 1: VTR specifications
(IEC 62330-1:2003)
Système de magnétoscope numérique  Videokassettensystem
à cassette à balayage hélicoïdal mit Schrägspuraufzeichnung
sur bande magnétique auf Magnetband 12,65 mm (0,5 in) -
de 12,65 mm (0,5 in) - HD-D5-Format
Format HD-D5 Teil 1: VTR-Festlegungen
Partie 1: Spécifications du magnétoscope (IEC 62330-1:2003)
(CEI 62330-1:2003)
This European Standard was approved by CENELEC on 2004-03-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 62330-1:2004 E
Foreword
The text of the International Standard IEC 62330-1:2003, prepared by Technical Area 6: Higher data
rate storage media and equipment, of IEC TC 100, Audio, video and multimedia systems and
equipment, was submitted to the formal vote and was approved by CENELEC as EN 62330-1 on
2004-03-01 without any modification.

The following dates were fixed:

– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2005-03-01

– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-03-01

Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 62330-1:2003 was approved by CENELEC as a European
Standard without any modification.

In the official version, for Bibliography, the following note has to be added for the standard indicated:

IEC 60735 NOTE Harmonized as EN 60735:1991 (not modified).
__________
- 3 - EN 62330-1:2004
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60461 2001 Time and control code for video tape EN 60461 2001
recorders
IEC 60958 Series Digital audio interface EN 60958 Series
Part 1: General
1)
2)
IEC 61835 - Helical-scan digital component video EN 61835 1998
cassette recording system using
12,65 mm (0,5 in) magnetic tape -
Format D-5
1)
ITU-R BS.647 - A digital audio interface for broadcasting - -
studios
SMPTE RP 155 1995 Audio Levels and Indicators for Digital - -
Audio Records on Digital Television
Tape Recorders
1)
Undated reference.
2)
Valid edition at date of issue.

INTERNATIONAL IEC
STANDARD 62330-1
First edition
2003-05
Helical-scan digital video cassette recording
system using 12,65 mm (0,5 in) magnetic tape –
Format HD-D5 –
Part 1:
VTR specifications
© IEC 2003 ⎯ Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch  Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale XB
International Electrotechnical Commission
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For price, see current catalogue

– 2 – 62330-1 © IEC:2003(E)
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references. 9
3 Environment and test conditions . 9
3.1 Environment . 9
3.2 Reference tape . 9
3.3 Calibration tape . 9
4 Video tape .10
4.1 Base.10
4.2 Width.10
4.3 Width fluctuation.10
4.4 Tape thickness .10
4.5 Transmissivity.10
4.6 Offset yield strength .10
4.7 Magnetic coating .10
4.8 Coating coercivity .10
4.9 Particle orientation.10
5 Helical recordings .11
5.1 Tape speed .11
5.2 Record location and dimensions .11
5.3 Helical track record tolerance zones .14
5.4 Relative positions of recorded information .15
5.5 Gap azimuth .15
5.6 Transport and scanner.16
6 Programme track data.19
6.1 Introduction .19
6.2 Labelling convention.19
6.3 Sector details .19
6.4 Edit gaps .27
6.5 Channel code .27
6.6 Magnetization .39
7 Video interface .40
8 Audio interface .40
8.1 Encoding parameters.40
8.2 Digital signal interface .40
9 Video processing .40
9.1 Introduction .40
9.2 Recorded data .40
9.3 Channel and video block distribution.42
9.4 Word data arrangement .42
9.5 Video randomize.43
9.6 Outer error protection .43
9.7 Field data array .43
9.8 Order of transmission to inner coding .45

62330-1 © IEC:2003(E) – 3 –
10 Audio processing .45
10.1 Introduction .45
10.2 Source coding.45
10.3 Source processing .48
10.4 Auxiliary words .52
10.5 Outer error protection .56
10.6 Inner protection .57
10.7 Order of transmission to inner coding .57
10.8 Channel code .57
10.9 Allocation of audio sectors.57
11 Longitudinal tracks.58
11.1 Relative timing.58
11.2 Control track.58
11.3 Cue record.59
11.4 Time and control code record .59
Annex A (normative) Tape tension .60
Annex B (normative) Cross-tape track measurement technique.61
Annex C (normative) Track pattern during insert editing .65
Bibliography.66
Figure 1 – Record block diagram. 8
Figure 2 – Playback block diagram. 8
Figure 3 – Location and dimensions of recorded tracks .12
Figure 4 – Location of cue and time and control code track record .13
Figure 5 – Location and dimensions of tolerance zones of helical track record .15
Figure 6 – A possible scanner configuration .17
Figure 7 – A possible longitudinal head location and tape wrap.18
Figure 8 – Sector arrangement on helical track .19
Figure 9 – Sync block format.20
Figure 10 – Sync block identification format .21
Figure 11 – Track, segment and field numbers .22
Figure 12 – Sync block number .23
Figure 13 – Sector preamble and postamble .26
Figure 14 – Reconfigured data .41
Figure 15 – Channel and video block distribution .42
Figure 16 – Field data array .44
Figure 17 – Audio data block field array .47
Figure 18 – Audio data block layout .50
Figure 19 – Audio data block arrangement .51
Figure 20 – Digital audio word to byte conversion .52
Figure 21 – Audio data block auxiliary data .53
Figure 22 – Audio channel arrangement.57
Figure 23 – Recorded control record waveform timing.58

– 4 – 62330-1 © IEC:2003(E)
Figure B.1 – Correction factors (actual tape speed and tension).63
Figure B.2 – Cross-tape measurement technique .63
Figure B.3 – Track location error plot (example).64
Figure C.1 – A typical pattern during insert editing .65
Table 1 – Record location and dimensions .14
Table 2 – Parameters for a possible scanner design .16
Table 3 – 8-14 modulation (CDS≥0) .29
Table 4 – 8-14 modulation (CDS≤0) .34
Table 5 – Priority of modulation code selection (end DSV = –2) .39
Table 6 – Priority of modulation code selection (end DSV = +2) .39
Table 7 – Data rate and wavelength .39
Table 8 – Signal format information.41
Table 9 – AES status data (Byte 0) .48
Table 10 – AES status data (Byte 1).48
Table 11 – Audio data word mode .51
Table 12 – Channel use control word .54
Table 13 – Pre-emphasis control word .54
Table 14 – Word mode control word .55
Table 15 – FNCT mode .55
Table B.1 – Nomenclature and calculation of track location error .62

62330-1 © IEC:2003(E) – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HELICAL-SCAN DIGITAL VIDEO CASSETTE RECORDING SYSTEM
USING 12,65 mm (0,5 in) MAGNETIC TAPE – FORMAT HD-D5 –
Part 1: VTR specifications
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 co-operation 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 express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
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.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62330-1 has been prepared by Technical Area 6: Higher data rate
storage media and equipment of IEC technical committee 100: Audio, video and multimedia
systems and equipment.
It was submitted to the national committees for voting under the Fast Track Procedure as the
following documents:
CDV Report on voting
100/504/CDV 100/603/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
2008. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
– 6 – 62330-1 © IEC:2003(E)
IEC 62330 consists of the following parts, under the general title Helical-scan digital video
cassette recording system using 12,65 mm (0,5 in) magnetic tape – Format HD-D5.
Part 1: VTR specifications
Part 2: Compression format
Part 3: Data stream format
This part 1 describes the VTR specifications which are tape, magnetization, helical recording,
modulation method and basic system data for high definition video compressed data on 29,97
or 59,94 frame rate.
Part 2 describes the specifications for encoding process and data format for 1080i and 720p
systems.
Part 3 describes the specifications for transmission of HD-D5 compressed video and audio
data stream over 360 Mb/s serial digital interface.

62330-1 © IEC:2003(E) – 7 –
HELICAL-SCAN DIGITAL VIDEO CASSETTE RECORDING SYSTEM
USING 12,65 mm (0,5 in) MAGNETIC TAPE – FORMAT HD-D5 –
Part 1: VTR specifications
1 Scope
This part of IEC 62330 specifies the content, format, and recording method of the data blocks
containing HD compressed video data defined in part 2, audio, and associated data which
form the helical records on 12,65 mm (0,5 in) tape in cassettes as specified in IEC 61835.
In addition, this standard specifies the content, format, and recording method of the
longitudinal record containing tracking information for the scanning head associated with
the helical records, and also the longitudinal cue audio, and time and control code.
One video channel of HD compressed video data and four independent audio channels are
recorded in the digital format. Each of these channels is designed to be capable of
independent editing.
The HD compressed video data are derived from the following HD video signal:
• 1080 line / 59,94 Hz field frequency interlace system
• 720 line / 59,94 Hz frame frequency progressive system
Figure 1 and Figure 2 show block diagrams of the processes involved in the recorder.

– 8 – 62330-1 © IEC:2003(E)
AUDIO
(ANALOG)
ANALOG/ INTRA- OUTER
BLOCK
DIGITAL FIELD ECC
SHUFFLE
INTERFACE SHUFFLE ENCODER
(DIGITAL AES/EBU)
VIDEO
CHANNEL OUTER INTRA-
COMPRESSED
DEMUX ECC FIELD
HD DIGITAL DATA
SWITCH ENCODER SHUFFLE
RECORD INNER
HELICAL CHANNEL DATA
SYNC/
DRIVER ECC
TRACK CODER MUX
ID GEN.
AND HEAD ENCODER
CONTROL TRACK CONTROL TRACK
INFORMATION GEN.
EXT
TIME AND
TIME CODE RECORD
T.C.
CONTROL
GEN. DRIVERS
CODE
AND HEADS
(ANALOG)
CUE REC. AMP
Figure 1 – Record block diagram
AUDIO
(ANALOG)
DIGITAL/ AUDIO INTRA- OUTER
BLOCK
ANALOG ERROR FIELD ECC
DESHUFFLE
INTERFACE CONCEAL DESHUFFLE DECODER
(DIGITAL AES/EBU)
VIDEO
VIDEO CHANNEL OUTER INTRA-
COMPRESSED
ERROR MUX ECC FIELD
HD DIGITAL DATA
CONCEAL SWITCH DECODER DESHUFFLE
PLAYBACK
INNER
HELICAL SYNC DATA
HEAD CHANNEL
ECC
TRACK PRE AMP DETEC DECODER DEMUX
DECODER
AND EQ.
CONTROL TRACK CONTROL TRACK
INFORMATION   P.B.
T.C.
TIME AND TIME CODE
HEADS AND
CONTROL CODE READER
PLAYBACK
INTERFACE
(ANALOG)
CUE P.B. AMP
Figure 2 – Playback block diagram

62330-1 © IEC:2003(E) – 9 –
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 60461:2001, Time and control code for video tape recorders
IEC 60958, Digital audio interface
IEC 61835, Helical-scan digital component video cassette recording system using 12,65 mm
(0,5 in) magnet tape – Format D-5
ITU-R BS. 647 A digital audio interface for broadcasting studios
SMPTE RP 155:1995, Audio levels and Indicators for Digital Audio Records on Digital
Television Tape Recorders
3 Environment and test conditions
3.1 Environment
Tests and measurements made on the system to check the requirements of this standard
shall be carried out under the following conditions:
Temperature 20 °C ±1 °C
Relative humidity (50 ±2) %
Barometric pressure from 86 kPa to 106 kPa
Tape conditioning not less than 24 h
Centre tape tension 0,31 N ±0,05 N (see Annex A)
3.2 Reference tape
Blank tape for reference recordings should be available from any source meeting the tape
characteristics as portrayed by this standard.
3.3 Calibration tape
The calibration tapes meeting the requirements of 3.3.1 and Clause 4 should be available
from manufacturers who produce DTTRs and players in accordance with this standard.
3.3.1 Record locations and dimensions
Tolerances shown in Table 1 will be reduced by 50 %.
3.3.2 Calibration signals
Two sets of signals should be recorded on the calibration tape:
a) Video: 100 % colour bars
Audio: 1 kHz tone at 20 dB below full scale on each of audio channels
Cue: 1 kHz tone at reference level; 10 kHz tone at reference level

– 10 – 62330-1 © IEC:2003(E)
b) A signal of constant recorded frequency (i.e. one-half the Nyquist frequency) shall be
recorded only on tracks of field 0, segment 0 for the purpose of mechanical alignment.
Recording level should conform to 6.6.3.
4 Video tape
4.1 Base
The base material shall be polyester or equivalent.
4.2 Width
The tape width shall be 12,650 mm ±0,008 mm.
The tape, covered with glass, is measured without tension at a minimum of five different
positions along the tape using a calibrated comparator having an accuracy of 0,001 mm
(1 µm). The tape width is defined as the average of the five readings.
4.3 Width fluctuation
Tape width fluctuation shall not exceed 5 µm peak to peak. Measurement of tape width
fluctuation shall be taken over a tape length of 900 mm. The value of tape width fluctuation
shall be evaluated by measuring the tape width at 10 points, each separated by a distance of
100 mm.
4.4 Tape thickness
Two types of tape thickness shall be permitted by this standard. The first tape thickness shall
be 10,2 µm to 11,0 µm (referred to as 11 µm); the second tape thickness shall be 13,0 µm to
14,0 µm (referred to as 14 µm).
4.5 Transmissivity
Transmissivity shall be less than 5 %, measured over the range of wavelengths 800 nm to
900 nm.
4.6 Offset yield strength
The offset yield strength shall be greater than 9 N for 11 µm tape and 10 N for 14 µm tape.
The force required to produce 0,2 % elongation of a 1 000 mm test sample with a pull rate of
a 10 mm per minute shall be used to confirm the offset yield strength. The line beginning at
0,2 % elongation parallel to the initial tangential slope is drawn and then read at the point of
intersection of the line and the stress-strain curve.
4.7 Magnetic coating
The magnetic layer of the tape shall consist of a coating of metal particles or equivalent.
4.8 Coating coercivity
The coating coercivity shall be a class 1 800 (144 000 A/m) with an applied field of
400 000 A/m (5 000 Oe) as measured by a 50 Hz or 60 Hz B-H meter or vibrating sample
magnetometer (VSM).
4.9 Particle orientation
The metal particles shall be longitudinally oriented.

62330-1 © IEC:2003(E) – 11 –
5 Helical recordings
5.1 Tape speed
The tape speed shall be 167,228 mm/s. The tolerance shall be ±0,2 %.
5.2 Record location and dimensions
5.2.1 The format requires full-width erasure for continuous recording and flying erasure for
insert editing.
5.2.2 Record location and dimensions for continuous recording shall be as specified in
Figure 3, Figure 4 and Table 1. In recording, sector locations on each helical track
shall be contained within the tolerance specified in Figure 3 and Table 1.
5.2.3 The reference edge of the tape for record location dimensions specified in this
standard shall be the lower edge as shown in Figure 3. The magnetic coating, with
the direction of tape travel as shown in Figure 3, is on the side facing the observer
(measuring techniques are shown in Annex B).
5.2.4 As indicated in Figure 3, this standard anticipates a zero guard band between
recorded tracks, and the record head width should be equivalent to the track pitch of
20 µm. The scanner head configuration should be chosen so that the recorded track
widths are contained within the limits of 18 µm to 22 µm.
5.2.5 In insert editing, this standard provides a guard band of 2 µm (nominal) between the
previously recorded track and the inserted track at editing points only. A typical track
pattern for insert editing is shown in Figure C.1.

Direction of head motion
K0
K1
V
V1 A4 A3 A2 A1 0
X1
X2
X3
X4
X5
X6
L
M M
M M
– 12 – 62330-1 © IEC:2003(E)
Direction of tape travel
Cue track
Cue Track
A
Control track
Control Track
Time and control code track
Time and Control Code Track
θ
Reference edge
α0
α1
α1
α0
Detail A
NOTE 1 A1, A2, A3, and A4 are audio sectors.
NOTE 2 V0 and V1 are video sectors.
NOTE 3 Tape viewed from magnetic coating side.
NOTE 4 Dimensions X1 to X6 are determined by the programme reference point as defined in Figure 4.
Figure 3 – Location and dimensions of recorded tracks
I
Y
A
B
C
D
E
F
G
H
W
62330-1 © IEC:2003(E) – 13 –
P2
CUE TRACK
P1
HEAD MOTION
B
A
CONTROL TRACK
TAPE
TRAVEL
TIME AND CONTROL CODE TRACK
SERVO
REFERENCE
PULSE
RECORDING-CURRENT
WAVEFORM
NSSN
PROGRAMME REFERENCE
POINT
RECORDING-CURRENT
WAVEFORM
VIDEO
SECTOR
C
PREAMBLE
X1
DETAIL A
CONTROL
PROGRAMME
TRACK
REFERENCE POINT
X1
REFERENCE EDGE
TIME AND CONTROL CODE TRACK
DETAIL B
LOCATION OF
VIDEO START
DETAIL C
Figure 4 – Location of cue and time and control code track record
Y (BASIC)
Y
– 14 – 62330-1 © IEC:2003(E)
Table 1 – Record location and dimensions
Dimensions in millimetres
Dimensions Nominal Tolerance
A Time and control code track lower edge 0 Basic
B Time and control code track upper edge 0,450 ±0,050
C Control track lower edge 0,900 ±0,050
D Control track upper edge 1,300 ±0,050
E Programme area lower edge 1,629 Derived
F Programme area width 10,020 Derived
G Cue audio track lower edge 11,950 ±0,050
H Cue audio track upper edge 12,550 ±0,050
I Helical track pitch 0,0200 Ref
K0 Video sector 0 length 55,458 Derived
K1 Video sector 1 length 55,391 Derived
L Helical track total length 116,397 Derived
M Audio sector length 0,936 Derived
P1 Control track reference pulse to programme reference point (see 180,549 ±0,050
Figure 4)
P2 183,400 ±0,100
Cue/time and control code signal, start of code word, to programme
reference point (see Figure 4)
X1 0 ±0,050
Location of start of video sector V0
X2 55,752 ±0,050
1)
Location of start of audio sector A1
X3 57,049 ±0,050
1)
Location of start of audio sector A2
X4 58,345 ±0,050
1)
Location of start of audio sector A3
X5 59,642 ±0,050
1)
Location of start of audio sector A4
X6 60,938 ±0,050
Location of start of video sector V1
Y 1,640 Basic
Programme reference point
Track angle Basic
θ  4,938 4 °
Azimuth angle (track 0) ± 0,150 °
α0 - 20,038 °
Azimuth angle (track 1)
α1 19,962 ° ± 0,150 °
NOTE  Measurements shall be made under the conditions specified in 3.1. The measurements shall be
corrected to account for actual tape speed (see Figures B.1 and B.2).
1)
Audio channel numbers vary.
5.3 Helical track record tolerance zones
The lower edges of any eight consecutive tracks starting at the first track in each video frame
shall be contained within the pattern of the eight tolerance zones established in Figure 5.
Each zone is defined by two parallel lines which are inclined with respect to the tape
reference edge at an angle of 4,938 4° basic.
The centre lines of all zones shall be spaced apart 0,020 0 mm basic. The width of zones 1 to
3 and 5 to 8 shall be 0,006 mm basic. The width of zone 4 shall be 0,004 mm basic. These
zones are established to contain track angle errors, track straightness errors, and vertical
head offset tolerance (measuring technique is shown in Annex B).

HEAD MOTION
62330-1 © IEC:2003(E) – 15 –
TAPE TRAVEL
NOTE 3
ZONE ZONE ZONE ZONE ZONE ZONE ZONE ZONE
1 2 3 4 5 6 7 8
TRACK LOWER EDGES
TAPE REFERENCE EDGE
NOTE 1 Tolerance zone centrelines.
NOTE 2 0,020 0
NOTE 3 4,938 4°
NOTE 4 All dimensions in millimetres.
Figure 5 – Location and dimensions of tolerance zones of helical track record
5.4 Relative positions of recorded information
5.4.1 Relative positions of longitudinal tracks
Audio, video, control track, time and control code, and cue track with information intended to
be time coincident shall be positioned as shown in Figure 3 and Figure 4.
5.4.2 Programme area reference point
The programme area reference point is determined by the intersection of a line parallel to the
reference edge of the tape at a distance Y from the reference edge and the centre line of the
first track in each video field (segment 0, track 0). (See Figure 3 and Figure 4.)
The end of the preamble and start of the video sector are located at the programme area
reference point, and the tolerance is dimension X1. The locations are shown in Figure 3 and
Figure 4; dimensions X1 and Y are in Table 1. The relationship between sectors and contents
of each sector is specified in Clause 6.
5.5 Gap azimuth
5.5.1 Cue track, control track, time code track
The azimuth angle of the cue, control track, and time and control code head gaps used to
produce longitudinal track records shall be perpendicular to the track record.
NOTE 1
NOTE 1
NOTE 1
NOTE 1
NOTE 1
NOTE 1
NOTE 1
NOTE 1
NOTE 2
0,006
0,006
0,006
0,004
0,006
0,006
0,006
0 06
,0
– 16 – 62330-1 © IEC:2003(E)
5.5.2 Helical track
The azimuth of the head gaps used for the helical track shall be inclined at angles α and α
0 1
as specified in Table 1, with respect to a line perpendicular to the helical track. The azimuth
of the first track of every field (segment 0, track 0) shall be oriented in the counterclockwise
direction with respect to a line perpendicular to the helical track direction when viewed from
the side of tape containing the magnetic record.
5.6 Transport and scanner
The effective drum diameter, tape tension, helix angle, and tape speed taken together
determine the track angle. Different methods of design and/or variations in drum diameter and
tape tension can produce equivalent recordings for interchange purposes.
One possible configuration of the transport uses a scanner with an effective diameter of
76,000 mm. Scanner rotation is in the same direction as tape motion during normal playback
mode. Data is recorded by two groups of four heads mounted 180° apart. Figure 6 shows one
possible mechanical configuration of the scanner, and Table 2 shows the corresponding
mechanical parameters. Figure 7 shows the relationship between the longitudinal heads and
the scanner. Other mechanical configurations are allowable provided the same footprint of
recorded information is produced on tape.
Erase heads are described in 5.2.1 and Figure 6.
Table 2 – Parameters for a possible scanner design
Parameters
Scanner rotation speed (rps) 90/1,001
Number of tracks per rotation 8
Drum diameter (mm) 76,000
Centre span tension (N) 0,31
Helix angle (degrees) 4,9000
Effective wrap angle (degrees) 176,9
Scanner circumferential speed (m/s) 21,5
H1,H3 over wrap head entrance 14,1
(degrees)
H1,H3 over wrap head exit (degrees) 6
Angular relationship H1 – H4: 13,570
(degrees) H2 – H4: 9,047
H3 – H4: 4,523
H5 – H8: 13,570
H6 – H8: 9,047
H7 – H8: 4,523
H4 – H8: 180,000
Vertical displacement H1 – H4: 0,054
(mm) H2 – H4: 0,036
H3 – H4: 0,018
H5 – H8: 0,054
H6 – H8: 0,036
H7 – H8: 0,018
Maximum tip projection (µm) 42,0
Record head track width (µm)
62330-1 © IEC:2003(E) – 17 –
H6 H7
H5
H8
H10
176,9°
EFFECTIVE
WRAP
POLE TIP
ANGLE
ROTATION
197,0°
TOTAL
WRAP
ANGLE
TAPE
TAPE
TRAVEL
TRAVEL
H9
H4 H1
H3 H2
H1-H8 : RECORDING HEAD TIPS
H9-H10: FLYING ERASE HEAD TIPS
4,523°
(INSERT EDITING ONLY)
9,047°
13,570°
41,785°
76,000 mm(NOMINAL)
DRUM DIAMETER
UPPER DRUM
H9 CENTRE OF H9 H10
H4
36,6
18,0
H3
CENTRE DRUM
36,0
H2
54,0
H1
LOWER DRUM
(Unit: µm)
Figure 6 – A possible scanner configuration

– 18 – 62330-1 © IEC:2003(E)
197,0
176,9
TOTAL
EFFECTIVE
WRAP
WRAP
ANGLE
ANGLE
59,3 mm
POLE TIP
ROTATION
TAPE
TRAVEL
CONTROL HEAD
TOP VIEW
PROGRAMME
REFERENCE
59,3
END OF
POINT
HELICAL
TRACK
4,9000
CENTRE
LINE
1,640
3,98(6 )
180,549
UNWRAPPED, VIEWED MAGNETIC COATING SIDE
Figure 7 – A possible longitudinal head location and tape wrap

62330-1 © IEC:2003(E) – 19 –
6 Programme track data
6.1 Introduction
Each HD TV field (1080/60i) or frame (720/60p) is recorded on 12 tracks.
The helical tracks contain digital data from the video channel and four audio channels. Each
track contains a video sector followed by four audio sectors corresponding to four audio
channels and followed by a second video sector, recorded in that order. An edit gap between
sectors accommodates timing errors during editing. Figure 8 shows the arrangement of video
and audio sectors on the tape.
VIDEO SECTOR 0 AUDIO SECTOR AUDIO SECTOR
HEAD EDIT GAP EDIT GAP EDIT GAP
T PE P E P
(256 SYNC BLOCKS) (4 SYNC BLOCKS) (4 SYNC BLOCKS)
AUDIO SECTOR AUDIO SECTOR VIDEO SECTOR 1
EDIT GAP EDIT GAP HEAD
E P E P E P
(4 SYNC BLOCKS) (4 SYNC BLOCKS) (256 SYNC BLOCKS)
T Track preamble (58 bytes)
E In-track preamble
P Postamble (4 bytes)
Sync block: 97 bytes
Edit gap: 162bytes nominal
Figure 8 – Sector arrangement on helical track
6.2 Labelling convention
The least significant bit is written on the left and first recorded to tape.
The lowest numbered byte is shown at the left/top and is the first encountered in the input
data stream.
Byte values are expressed in hexadecimal notation unless otherwise noted. An h subscript
indicates hexadecimal value.
6.3 Sector details
Each sector (audio or video) is divided into the following elements:
– preamble containing clock run-up sequence, sync pattern, identification pattern and fill
pattern;
– 20 – 62330-1 © IEC:2003(E)
– sync blocks containing sync pattern and identification pattern, followed by a fixed length
data block with error control;
– postamble containing sync pattern and identification pattern.
6.3.1 Sync block
The sync block format is common to both audio and video sectors. Each sync block contains a
sync pattern (2 bytes) and an inner code block. Each inner block contains an identification
pattern (2 bytes) and 85 data bytes of video, audio, or outer check bytes followed by 8 inner
check bytes.
The inner code block contains the two bytes of the identification pattern together with 85 data
bytes. Figure 9 shows the sync block format.
01 2 3 4 5 6 86 87 88 89 90 91 92 93 94 95 96
B B
S S ID ID B B B B K K K K K K K K
0 1 0 1 84 83 2 1 7 6 5 4 3 2 1 0
82 0
SYNC ID DATA INNER CHECK
2 2 85 8
INNER CODE BLOCK (95 BYTES)
97 BYTES
Figure 9 – Sync block format
6.3.2 Sync pattern
a) Length: 16 bits (2 bytes).
b) Pattern: 97F1 (in hexadecimal notation).
LSB MSB
Byte 0  - 1 110 100 1
Byte 1  - 1 000 111 1
c) Protection: none.
d) Randomization: none.
6.3.3 Identification pattern
As illustrated in Figure 10, the first two bytes of each inner block are used for identification of
sync block, television field, segment (group of helical tracks scanned simultaneously), sector
(portion of a track), and helical track. Bits 1 to 6 of the second byte (byte 3 of sync block) of
the identification pattern identify the track. Bit 7 of the second byte (byte 3) identifies a sector
on the helical track (see Figure 11).
a) Length: 16 bits (2 bytes).
b) Arrangement: the sync block number (byte 2 and the bit 0 of byte 3) follows a coded
sequence along the track. Figure 12 shows the sequence of the sync block numbers.
The sector ID (bits 1to7 of byte 3) identifies a particular sector.

62330-1 © IEC:2003(E) – 21 –
The segment count is modulo 3. The field count for video sectors is modulo 4 (VF = 0 in
byte 3). The field count for audio sectors is modulo 4 (for AF and AF in byte 3) and AF
0 1 2
(in byte 3) is used for the identification of the five field sequences.
c) Video field identification: The field address VF , VF , VF (bits 4, 5, and 6 of the byte 3)
0 1 2
for video sync blocks shall identify the field sequence as shown below. In the case of
composite signal input, the field address shall identify the four-field colour sequences as
defined in ITU Report 624 and have the values as shown below:
Component signal input Composite signal VF VF VF
0 1 2
Field 1 Colour frame A, field I 0 0 0
Field 2 Colour frame A, field II 1 0 0
Field 1 Colour frame B, field III 0 1 0
Field 2 Colour frame B, field IV 1 1 0
ARRANGEMENT
BYTE 2 BYTE 3
9 BITS 7 BITS
SYNC BLOCK NUMBER SECTOR ID
SYNC BLOCK NUMBER
BYTE 2
0123 456 7
LSB MSB
B B B B B B B B
0 1 2 3 4 5 6 7
PART OF SYNC BLOCK NUMBER
SECTOR ID FOR VIDEO SYNC BLOCKS
BYTE 3
01234 567
LSB MSB
B S S CVF VF VF SEC
8 0 1 0 1 2
PART OF MSB OF
=0
SYNC BLOCK TRACK
NUMBER SEGMENT NUMBER NUMBER FIELD NUMBER SECTOR NUMBER
SECTOR ID FOR AUDIO SYNC BLOCKS
BYTE 3
012 34567
LSB MSB
B S S CAF AF AF SEC
8 0 1 0 1 2
PART OF
MSB OF
SYNC BLOCK
TRACK
NUMBER SEGMENT NUMBER NUMBER FIELD NUMBER SECTOR NUMBER
= 0 : 801 SAMPLES
= 1 : 800 SAMPLES
Figure 10 – Sync block identification format

HEAD MOT ON
I
F=1 C=1
S=2 T=3
F=1 C=1
S=2 T=2
F=1 C=0
S=2 T=1
F=1
S=2 C=0 T=0
F=1 =1
S=1 C T=3
F=1 C
S=1 =1 T=2
F=1
S=1 C=0 T=1
F=1 S=1 C=0 T=0
F=1 S=0 C=1 T=3
F=1 S=0 C=1 T=2
F=1 S=0 C=0 T=1
F=1 S=0 C=0 T=0
F=0 S=2 C=1 T=3
F=0 S=2 C=1 T=2
F=0 S C=0 T=1
=2
F=0 C=0
S=2 T=0
F=0 C=1
S=1 T=3
F=0 C=1
S=1 T=2
F=0 C=0
S=1 T=1
F=0 C=0
S=1 T=0
F=0
S=0 C=1 T=3
F=0 S=0 C=1 T=2
F=0 S=0 C=0 T=1
F=0 S=0 C=0 T=0
– 22 – 62330-1 © IEC:2003(E)
TAPE TRAVEL END OF VIDEO FIELD
SEC=1
SEC=0
START OF
VIDEO FIELD
NOTES
1 F = field number (0, 1, 2, 3).
2 S = segment number (0, 1, 2).
3 SEC = sector number; C = MSB of track number (0, 1).
4 T = track number (0, 1, 2, 3). LSB of track number is identified by the azimuth angle.
5 Audio sectors are not shown.
Figure 11 – Track, segment and field numbers
...