ISO/IEC 11319:1993
(Main)Information technology — 8 mm wide magnetic tape cartridge for information interchange — Helical scan recording
Information technology — 8 mm wide magnetic tape cartridge for information interchange — Helical scan recording
This International Standard specifies the physical and magnetic characteristics of an 8 mm wide magnetic tape cartridge to enable interchangeability of such cartridges. It also provides a format and recording method, thus allowing, together with ISO 1001 for Magnetic Tape Labelling, full data interchange by means of such magnetic tape cartridges.
Technologies de l'information — Cartouche pour bande magnétique de 8 mm de large pour l'échange d'information — Enregistrement par balayage hélicoïdal
La présente Norme internationale spécifie les caractéristiques physiques et magnétiques d'une cartouche à bande magnétique de 8 mm de large, dans le but de permettre l'interchangeabilité de telles cartouches. Elle décrit également un format et une méthode d'enregistrement, permettant ainsi, avec l'ISO 1001 relative à l'étiquetage des bandes magnétiques, un échange total de données au moyen de telles cartouches à bande magnétique.
General Information
Standards Content (Sample)
INTERNATIONAL
ISO/IEC
STANDARD
First edition
1993-07-15
Information technology - 8 mm wide
magnetic tape cartridge for information
interchange - Helical scan recording
Technologies de I’informa tion
- Cartouche pour bande magnetique de
8 mm de large pour Mchange d’information - Enregistrement par
bala yage h&licoidal
Reference number
lSO/IEC 11319:1993(E)
Contents
Page
Section 1 : General
1 Scope
2 Conformance
3 Normative references
4 Definitions 1
4.1 AC erase
Average Signal Amplitude 1
4.2
4.3 azimuth
4.4 back surface
4.5 bit cell
byte 1
4.6
4.7 cartridge
4.8 Cyclic Redundancy Check (CRC) Character
4.9 Error Correcting Code (ECC)
4.10 flux transition position
4.11 flux transition spacing
4.12 2
magnetic tape
4.13 Master Standard Reference Tape
4.14 Physical Beginning of Tape (PBOT)
4.15 Physical End of T;lpe (PEOT)
4.16 physical recordinrr, density
4.17 Secondary Refer&we Amplitude
4.18 Secondary Reference Field
4.19 Secondary Standard Reference Tape
4.20 Standard Reference Current (II-)
4.21 Tape Reference Edge
4.22 Test Recording &rent
4.23
track
4.24
Typical Field
4.25
0 ISO/IEC 1993
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 per-
mission in writing from the publisher.
I SO/I EC Copyright Off ice l Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ISOlIEC 11319:1993(E)
Environment and safety
5.1 Testing environment
5.2 Operating environment
Storage environment
5.3
Transportation
5.4
5.5 Safety
5.6 Flammability
case 3
Section 2 : Requirements for the
Dimensional and mechanical characteristics of the case
. General
. Over211 dimension ( figure 3 )
Holding areas
63 .
l Cartridge insertion
65 . Window ( figure 1 )
. Loading grips ( figure 3 )
. Label areas ( figure 3 )
Datum areas and datum holes ( figures 4, 5 and 6 )
6:9 Support areas
6.10 Recognition holes ( figures 5, 6 and 7 )
Write-inhibit Hole ( figures 6 and 7 ) 8
6.11
Pre-positioning surfaces ( figures 3 and 5 )
6.12
Cartridge lid ( figures 3 and 8 )
6.13
Cartridge reel lock ( figure 11 )
6.14
Reel access holes ( figure 5 )
6.15
Interface between the reels and the drive spindles ( figures 17 and 18 )
6.16
Light path ( figures 5, 7, 15 and 16 )
6.17
6.18 Position of the tape in the case ( figure 16 )
6.19 Tape path zone ( figures 16 and 17 )
6.20 Tape access cavity ( figure 5 )
6.21 Tape access cavity clearance requirements ( figure 19 )
Section 3 : Requirements for the unrecorded tape l
Mechanical, physical and dimensional characteristics of the tape
7.1 Materials
7.2 Tape length
7.2.1 Length of magnetic tape
7.2.2 Length of leader and trailer tapes
7.2.3 Splicing tape
Width
7.3
Discontinuities
7.4
7.5 Thickness
7.5.1 Thickness of magnetic tape
7.5.2 Thickness of leader and trailer tape
. . .
7.6 Longitudinal curvature
7.7 Cupping
20 )
7.8 Coating adhesion ( figure
;Id hesion
7.9 Layer-lo- irwx
7.10 Tensik strketh
L.
7.10.1 Breaking strencth
7X1.2 Yield stl-ength
L
Residual elong:k~n
7.11
Electric3 1 resistance of the surf;\ce
7.12
Tape winding
7.13
Light transmcittance of tape
7.14
Magnetic recording performance
8.1 Test conditions
8.2 Typicat Field
8.3 Signal Amplitude
Resolution
8.4
Narrow-band signal-to-noise ratio
8.5
8.5.1 Requirement
8.52 Proced u re
Ease of erasure
8:7 Tape quality
8.7.1 Missing pulses
8.7.2 Missing pulse zone
Inhibitor tape
8.8
Section 4 : Requirements for an interchanged tape
Format
9.1 Gener3 1
9.2 Information matrix
9.2.1 Loading of the information matrix
Method of recording
Physical recording density
10.1
10.1.1 Long-term average bit cell length
10.1.2 Short-term average bit cell length
10.1.3 Rate of change
Bit shift
10.2
Read sign:;1 amplitudes
10.3
iv
10.3.1 Amplitude of data signals 41
10.3.2 Amplitude of servo signals
10.3.3 Signal amplitude on an analogue tape mark track
10.4 Erasu i-e
Track geometry 42
1 l*l Track positions
11.2.1 Average track pitch
11.2.2 Adjacent track pitch
11.3 Track width
11.4 Track angle
11.5 Linearity of track edges
11.6 Azimuth
12 Format of an information track
12.1 Channel bit
12.2 Information Segment
12.2.1 Bit Synchronization field
12.2.2 Information Segment Number
12.2.3 Information Segment field
Information Block
12.3
12.4 Information Zone
Servo Zone
12.5
Information Tracks
12.6
12.6.1 Format ID Track
12.6.2 Data Track
12.6.3 Tape Mark Track
12.6.4 Splice Track
13 Tape Mark
13.1 Description
13.2 Long Tape Mark
Short Tape Mark
13.3
13.3.1 Normal Short Tape Mark
13.3.2 Alternative Short Tape Mark
14 ID Information
14.1 Column 00, Row 00
14.1.1 Block Type - Data Block
14.1.2 Block Type - Data Block
14.1.3 Block type - Format ID
14.1.4 Block type - Pad Block
14.2 Column 00, Row 01
14.3 Column 00, Row 02 49
14.4 Column 00, Row 03 49
14.5 Column 00, Row 04 50
14.6 Column 00, Rows 05, 06 50
14.6.1 Row 05
14.6.2 Row 06
14.7 Column 00. Row 07
14.8 Column 00, Rows 08, 09, 10
14.8.1 Block type 5 Data Block
14.8.2 Block type - non-Data Block
14.9 Column 00, 50
Rows 11, 12, 13
15 Rewritten Information Blocks
16 Physical tape format
Initial Erased Area 51
16.1
16.2 Logical Beginning of Tape Area (LBOT Area)
16.3 Usable area of the tape
16.4 Post Data erased area
Annexes
Measurement of light transmittance of tape and leaders 53
A
B Measurement of bit shift
C Representation of &hit bytes by IO-bit patterns
D Recommendations for transportation
Inhibitor tape 63
E
vi
ISOlIEC 11319:1993(E)
Foreword
IS0 (the International Organization for Standardization) and IEC (the lnter-
national Electrotechnical Commission) form the specialized system for
worldwide standardization. National bodies that are members of IS0 or
IEC participate in the development of International Standards through
technical committees established by the respective organization to deal
with particular fields of technical activity. IS0 and IEC technical com-
mittees collaborate in fields of mutual interest. Other international organ-
izations, governmental and non-governmental, in liaison with IS0 and IEC,
also take part in the work.
In the field of information technology, IS0 and IEC have established a joint
technical committee, lSO/IEC JTC 1. Draft International Standards adopted
by the joint technical committee are circulated to national bodies for vot-
ing. Publication as an International Standard requires approval by at least
75 % of the national bodies casting a vote.
International Standard lSO/IEC 11319 was prepared by the European
Computer Manufacturers Association (as Standard ECMA-145) and was
adopted, under a special “fast-track procedure”, by Joint Technical Com-
mittee lSO/IEC JTC 1, Information technology, Sub-Committee 11, Flex
ible magnetic media for digital data interchange, in parallel with its approva
by national bodies of IS0 and IEC.
Annexes A, B and C form an integral part of this International Standard
Annexes D and E are for information only.
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INTERNATIONAL STANDARD ISO/IEC 11319:1993 (E)
Information technology - 8 mm wide magnetic tape cartridge for information
Helical scan recording
interchange -
Section 1 : General
1 scope
This International Standard specifies the physical and magnetic characteristics of an 8 mm wide magnetic tape
cartridge to enable interchangeability of such cartridges. It also provides a format and recording method, thus
allowing, together with IS0 1001 for Magnetic Tape Labeliing, full data interchange by means of such magnetic
tape cartridges.
2 Conformance
A magnetic tape cartridge shall be in conformance with this International Standard if it satisfies all mandatory
requirements specified herein. The tape requirements shall be satisfied throughout the extent of the tape.
3 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 were valid. Ail standards are subject to
revision, and parties to agreements based on this International Standard are encouraged to investigate the
possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0
maintain registers of currently valid International Standards.
ISO/R 527: 1966, Plastics - Determination of tensile properties.
IS0 1001: 1986, Information processing - File structure and labelling of magnetic tapes for ‘information interchange.
IS0 1302: 1978, Technical drawings - Method of indicating surface texture on drawings.
IEC 950: 1990, Safety of information Technology Equipment, including Electrical Business Equipment.
4 Definitions
For the purpose of this International Standard, the following definitions apply.
4.1 AC erase: A process of erasure utilizing alternating fields of decaying level.
4.2 Average Signal Amplitude: The average peak-to-peak value of the signal output of the read head measured
over a minimum of 1,40 mm, exclusive of missing pulses.
4.3 azimuth: The angular deviation, in degrees of arc, of the recorded flux transitions on a track from the line
normal to the track centreline.
4.4 back surface: The surface of the tape opposite to the magnetic coating used to record data.
4.5 bit cell: A distance along the track allocated for the recording of a Channel bit.
4.6 byte: An ordered set of bits acted upon as a unit.
4.7 cartridge: A case containing magnetic tape stored on twin reels.
4.8 Cyclic Redundancy Check (CRC) Character: A character used for error detection.
ISOlIEC 11319:1993(E)
4.9 Error Correcting Code (WC): A mathematical procedure yielding bytes for the detection and
correction of errors.
point which exhibits the maximum free-space flux density normal to the tape
4.10 flux transition position: That
surface.
4.11 flux transition spacing: The distance along a track between successive flux transitions.
4.12 accepts and retains magnetic signals intended for input, output, and storage of
magnetic tape: A tape that
for information
data processing.
A tape selected as the standard for amplitude, Typical Field and
4.13 Master Standard Reference Tape:
Resolution.
NOTE I The hlaster Standard Reference Tape has been established by the SONY Corporation.
4.14 Physical Beginning of Tape (PBOT): The transition from the tape leader to the opaque area of the splice by
which the translucent leader tape is joined to the magnetic tape.
4.15 Physical End of Tape (PEOT): The transition from the opaque area of the splice to the translucent trailer
tape.
recorded flux transitions per unit length of track, expressed in
4.16 physical recording density: The number of
flux transitions per millimetre (ftpmm).
4.17 Secondary Reference Amplitude: The Average Signal Amplitude from the Secondary Standard Reference
Tape when it is recorded with the Test Recording Current at 2126 ftpmm.
4.18 Secondary Reference Field: The Typical Field of the Secondary Standard Reference Tape.
4.19 Secondary Standard Reference Tape: A tape the performance of which is known and stated in relation to
that of the Master Standard Reference Tape.
NOTE 2 Secondary Standard Reference Tapes can be ordered under the Part Number RSE-5001, until the year 2001, from the
Magnetic Product Group, Data Media Sales Division, h-7-35 Kitashinagawa, Shinagawa-ku, TOKYO 131,
Sony Corporation,
Japan.
it is intended that these be used for calibrating tertiary reference tapes for use in routine calibration.
4.20 Standard Reference Current (Ir): The current that produces the Secondary Reference Field.
4.21 Tape Reference Edge: The lower edge of the tape when the magnetic coating is facing the observer and the
supply reel is to the observer’s right.
4.22 Test Recording Current: The current that is 1,5 times the Standard Reference Current.
4.23 tone: A signal recorded at 98 ftpmm.
4.24 track: A diagonally positioned area on the tape along which a series of magnetic transitions may be
recorded.
4.25 Typical Field: In the plot of the Average Signal Amplitude against the recording field at the physical
recording density of 2 126 ftpmm, the minimum field that causes an Average Signal Amplitude equal to 90% of
the maximum Average Signal Amplitude.
5 Environment and safety
The conditions specified below refer to ambient conditions immediately surrounding the cartridge. Cartridges
exposed to environments outside these limits may still be able to function usefully; however, such exposure may
cause permanent damage.
5.1 Testing environment
Unless otherwise specified, tests and measurements made on the cartridge to check the requirements of this
International Standard shall be carried out under the following conditions
temperature: 23 OC k 2 OC
relative Humidity: 40 % to 60 %
conditioning period before testing: 24 h
5.2 Operating environment
used for data interchange shall be capable of operating under the following conditions
Cartridges
temperature: 5 OC to 45 OC
relative Humidity: 20 % to 80 %
wet Bulb Temperature: 26 OC max.
There shall be no deposit of moisture on or in the cartridge.
Conditioning before operating:
If a cartridge has been exposed during storage and/or transportation to a condition outside the above values,
before use the cartridge shall be conditioned in the operating environment for a time at least equal to the period
during which it has been out of the operating environment, up to a m
...
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