ISO/IEC 22092:2002
(Main)Information technology — Data interchange on 130 mm magneto-optical disk cartridges — Capacity: 9,1 Gbytes per cartridge
Information technology — Data interchange on 130 mm magneto-optical disk cartridges — Capacity: 9,1 Gbytes per cartridge
ISO/IEC 22092:2002 specifies the mechanical, physical, and optical characteristics of a 130 mm optical disk cartridge (ODC) that employs thermo-magnetic and magneto-optical effects to enable data interchange between such disks. ISO/IEC 22092:2002 specifies two Types, viz. Type R/W provides for data to be written, read and erased many time over the recording surface(s) of the disk. Type WO provides for data once written to be read a multiplicity of times. Data shall not be erased nor amended. Multisession (incremental write operations) recording may be performed on type WO disks. The disk shall be of the same Type if recorded on both sides, A and B. Each side shall have a nominal capacity of 4,58 Gbytes, irrespective of the Type. The format specifies two sector sizes and allows for emulation of two further sizes. ISO/IEC 22092:2002 specifies the conditions for conformance testing and the Reference Drive; the environments in which the cartridges are to be operated and stored; the mechanical, physical and dimensional characteristics of the cartridge so as to provide mechanical interchangeability between data processing systems; the format of the information on the disk, both embossed and user-written, including the physical disposition of the tracks and sectors, the error correction codes, the modulation methods used; the characteristics of the embossed information on the disk; the thermo-magnetic and magneto-optical characteristics of the disk, enabling processing systems to write data onto the disk; the minimum quality of user-written data on the disk, enabling data processing systems to read data from the disk. ISO/IEC 22092:2002 provides for interchange between optical disk drives. Together with a standard for volume and file structure it provides for full data interchange between data processing systems.
Technologies de l'information — Échange de données sur cartouches de disque optique magnétique de 130 mm — Capacité: 9,1 Gbytes par cartouche
General Information
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Standards Content (Sample)
INTERNATIONAL ISO/IEC
STANDARD 22092
First edition
2002-07-01
Information technology — Data interchange
on 130 mm magneto-optical disk
cartridges — Capacity: 9,1 Gbytes per
cartridge
Technologies de l'information — Échange de données sur cartouches de
disque optique magnétique de 130 mm — Capacité: 9,1 Gbytes par
cartouche
Reference number
ISO/IEC 22092:2002(E)
©
ISO/IEC 2002
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ISO/IEC 22092:2002(E)
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ISO/IEC 22092:2002 (E)
Contents
Section 1 - General 1
1 Scope 1
2 Conformance 1
2.1 Optical Disk Cartridge (ODC) 1
2.2 Generating system 1
2.3 Receiving system 1
2.4 Compatibility statement 1
3 Normative reference 2
4 Terms and definitions 2
4.1 asymmetry 2
4.2 band 2
4.3 case 2
4.4 clamping zone 2
4.5 control track 2
4.6 Cyclic Redundancy Check (CRC) 2
4.7 defect management 2
4.8 disk reference plane 2
4.9 emulation 2
4.10 entrance surface 2
4.11 Error Correction Code (ECC) 2
4.12 format 2
4.13 hub 2
4.14 interleaving 2
4.15 Kerr rotation 3
4.16 land and groove 3
4.17 logical track 3
4.18 mark 3
4.19 mark edge 3
4.20 mark edge recording 3
4.21 optical disk 3
4.22 optical disk cartridge (ODC) 3
4.23 physical track 3
4.24 polarization 3
4.25 pre-recorded mark 3
4.26 read power 3
4.27 recording layer 3
4.28 recording track 3
4.29 Reed-Solomon code 3
4.30 space 3
4.31 spindle 4
4.32 substrate 4
4.33 track pitch 4
4.34 write-inhibit hole 4
4.35 write-once functionality 4
4.36 zone 4
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ISO/IEC 22092:2002 (E)
5 Conventions and notations 4
5.1 Representation of numbers 4
5.2 Names 4
6 List of acronyms 4
7 General description of the optical disk cartridge 5
8 General requirements 5
8.1 Environments 5
8.1.1 Test environment 5
8.1.2 Operating environment 5
8.1.3 Storage environment 6
8.1.4 Transportation 6
8.2 Temperature shock 6
8.3 Safety requirements 6
8.4 Flammability 6
9 Reference Drive 6
9.1 Optical system 7
9.2 Optical beam 8
9.3 Read channels 8
9.4 Tracking 8
9.5 Rotation of the disk 8
Section 2 - Mechanical and physical characteristics 9
10 Dimensional and physical characteristics of the case 9
10.1 General description of the case 9
10.2 Relationship of Sides A and B 9
10.3 Reference axes and case reference planes 9
10.4 Case drawings 9
10.5 Dimensions of the case 9
10.5.1 Overall dimensions 9
10.5.2 Location hole 10
10.5.3 Alignment hole 10
10.5.4 Surfaces on Reference Planes P 11
10.5.5 Insertion slots and detent features 12
10.5.6 Gripper slots 12
10.5.7 Write-inhibit holes 12
10.5.8 Media sensor holes 13
10.5.9 Head and motor window 14
10.5.10 Shutter 14
10.5.11 Slot for shutter opener 14
10.5.12 Shutter sensor notch 15
10.5.13 User label areas 15
10.6 Mechanical characteristics 16
10.6.1 Materials 16
10.6.2 Mass 16
10.6.3 Edge distortion 16
10.6.4 Compliance 16
10.6.5 Shutter opening force 16
10.7 Drop test 16
11 Dimensional, mechanical and physical characteristics of the disk 16
11.1 General description of the disk 16
11.2 Reference axis and plane of the disk 16
11.3 Dimensions of the disk 16
11.3.1 Hub dimension 17
11.4 Mechanical characteristics 18
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ISO/IEC 22092:2002 (E)
11.4.1 Material 18
11.4.2 Mass 18
11.4.3 Moment of inertia 18
11.4.4 Imbalance 18
11.4.5 Axial deflection 18
11.4.6 Axial acceleration 18
11.4.7 Radial runout 19
11.4.8 Radial acceleration 19
11.4.9 Tilt 19
11.5 Optical characteristics 19
11.5.1 Index of refraction 19
11.5.2 Thickness 19
11.5.3 Birefringence 19
11.5.4 Vertical Birefringence 19
11.5.5 Reflectance 20
12 Interface between cartridge and drive 20
12.1 Clamping method 20
12.2 Clamping force 20
12.3 Capture cylinder 20
12.4 Disk position in the operating condition 21
Section3-Formatofinformation 35
13 Track and Header geometry 35
13.1 Track and Header shape 35
13.2 Direction of track spiral 36
13.3 Track pitch 36
13.4 Logical track number 36
14 Track format 36
14.1 Physical track layout 36
14.2 Logical track layout 39
14.3 Radial alignment 39
14.4 Sector number 39
15 Sector format 39
15.1 Sector layout 39
15.2 Sector Mark 40
15.3 VFO fields 41
15.4 Address Mark (AM) 41
15.5 ID fields 41
15.6 Postamble (PA ) 42
1
15.7 Transition Area (TA ) 42
1
15.8 Gap 42
15.9 Auto Laser Power Control (ALPC) 42
15.10 Sync 42
15.11 Data field 43
15.11.1 User data bytes 43
15.11.2 CRC and ECC bytes 43
15.11.3 Bytes for Sector Written Flag (SWF) 43
15.11.4 Resync bytes 43
15.12 Postamble field (PA ) 43
2
15.13 Buffer field 43
15.14 Transition Area (TA ) 43
2
16 Recording code 44
17 Formatted Zone 45
17.1 General description of the Formatted Zone 45
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ISO/IEC 22092:2002 (E)
17.2 Division of the Formatted Zone 45
17.2.1 Lead-in Zone 46
17.2.2 Manufacturer Zones 46
17.2.3 User Zone 48
17.2.4 Reflective Zone 48
17.2.5 Control Track Zones 48
17.3 Control Track PEP Zone 48
17.3.1 Recording in the PEP Zone 48
17.3.2 Format of the tracks of the PEP Zone 49
17.4 Control Track SFP Zones 52
17.4.1 Duplicate of the PEP information 53
17.4.2 Media information 53
17.4.3 System Information 54
18 Layout of the User Zone 56
18.1 General description of the User Zone 56
18.2 Divisions of the User Zone 56
18.3 User Area 56
18.4 Defect Management Areas (DMAs) 63
18.5 Disk Definition Structure (DDS) 64
18.6 Rewritable Zone 66
18.6.1 Location 67
18.6.2 Partitioning 67
18.7 Write Once Zone 67
18.7.1 Location 67
18.7.2 Partitioning 67
19 Defect Management in the Rewritable and Write Once Zones 67
19.1 Initialization of the disk 67
19.2 Certification 67
19.2.1 Slipping Algorithm 67
19.2.2 Linear Replacement Algorithm 68
19.3 Disks not certified 68
19.4 Write procedure 68
19.5 Primary Defect List (PDL) 68
19.6 Secondary Defect List (SDL) 69
Section 4 - Characteristics of embossed information 70
20 Method of testing 70
20.1 Environment 70
20.2 Use of the Reference Drive 70
20.2.1 Optics and mechanics 70
20.2.2 Read power 70
20.2.3 Read channels 71
20.2.4 Tracking 71
20.3 Definition of signals 71
21 Signal from grooves 72
21.1 Ratio of Groove to Land 72
21.2 Push-pull signal 72
21.3 Divided push-pull signal 73
21.4 Track location 73
22 Signals from Headers 73
22.1 Sector Mark Signals 73
22.2 VFO signals 73
22.3 Address Mark, ID and PA signals 74
22.4 Timing jitter 74
22.5 Asymmetry 74
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ISO/IEC 22092:2002 (E)
23 Signals from Control Track PEP marks 74
Section 5 - Characteristics of the recording layer 75
24 Method of testing 75
24.1 Environment 75
24.2 Reference Drive 75
24.2.1 Optics and mechanics 75
24.2.2 Read power 75
24.2.3 Read Channel 75
24.2.4 Tracking 76
24.2.5 Signal detection for testing purposes 76
24.3 Write conditions 76
24.3.1 Write pulse and power 76
24.3.2 Write magnetic field 76
24.3.3 Pulse power determination 76
24.3.4 Media power sensitivity 77
24.4 Erase conditions 77
24.4.1 Erase power 77
24.4.2 Erasemagneticfield 77
24.5 Definition of signals 77
25 Magneto-optical characteristics 77
25.1 Figure of merit for magneto-optical signal 77
25.2 Imbalance of magneto-optical signal 78
26 Write characteristics 78
26.1 Resolution 78
26.2 Narrow-band signal-to-noise ratio 78
26.3 Cross-talk ratio 79
26.3.1 Rewritable track test method 79
26.4 Timing Jitter 79
26.5 Media thermal interaction 79
27 Erase power determination 80
Section 6 - Characteristics of user data 80
28 Method of testing 80
28.1 Environment 80
28.2 Reference Drive 80
28.2.1 Optics and mechanics 80
28.2.2 Read power 80
28.2.3 Read Channel 81
28.2.4 Mark Quality 81
28.2.5 Channel bit clock 81
28.2.6 Binary-to-digital converters 81
28.2.7 Error correction 81
28.2.8 Tracking 81
29 Minimum quality of a sector 81
29.1 Headers 81
29.1.1 Sector Mark 81
29.1.2 ID fields 81
29.2 User-written data 82
29.2.1 Recording field 82
29.2.2 Byte errors 82
29.2.3 Asymmetry 82
29.2.4 Timing jitter 82
30 Data interchange requirements 82
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ISO/IEC 22092:2002 (E)
30.1 Tracking 82
30.2 User-written data 82
30.3 Quality of disk 82
Annexes
A- Air cleanliness class 100 000 83
B- Edge distortion test 84
C- Compliance test 86
D- Test method for measuring the adsorbent force of the hub 88
E- CRC for ID fields 90
F- Interleave, CRC, ECC, Resync for the data field 91
G- Determination of Resync pattern 97
H- Read Channel for measuring jitter 102
J- Timing jitter measuring procedure 103
K- Definition of write pulse shape 104
L- Measurement of figure of merit 105
M- Implementation Independent Mark Quality Determination (IIMQD) for the interchange of recorded media 106
N- Requirements for interchange 108
P- Measurement implementation for Cross-track signal 110
Q- Asymmetry measuring definition 111
R- Office environment 113
S- Derivation of the operating climatic environment 114
T- Transportation 119
U- Sector retirement guidelines 120
V- Track deviation measurement 121
W- Values to be implemented in existing and future standards 125
X- Measurement of the vertical birefringence of the substrate 126
Y- Guidelines for the use of Type WO ODCs 128
Z- Laser power calibration for evaluation of media power sensitivity 129
AA - 512-byte, 1 024-byte Sector Emulation 133
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ISO/IEC 22092:2002 (E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission)
form the specialized system for worldwide standardization. National bodies that are members of ISO 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. ISO and IEC technical committees
collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in
liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have
established a joint technical committee, ISO/IEC JTC 1.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
The main task of the joint technical committee is to prepare International Standards. Draft International Standards
adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the national bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of
patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
ISO/IEC 22092 was prepared by ECMA (as ECMA-322) and was adopted, under a special “fast-track procedure”,
by Joint Technical Committee ISO/IEC JTC 1, Information technology, in parallel with its approval by national bodies
of ISO and IEC.
Annexes A to Q form a normative part of this International Standard. Annexes R to AA are for information only.
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INTERNATIONAL STANDARD ISO/IEC 22092:2002 (E)
Information technology - Data interchange on 130 mm magneto-optical disk
cartridges - Capacity: 9,1 Gbytes per cartridge
Section 1 - General
1Scope
This International Standard specifies the mechanical, physical, and optical characteristics of a 130 mm optical disk cartridge
(ODC) that employs thermo-magnetic and magneto-optical effects to enable data interchange between such disks.
This International Standard specifies two Types, viz.
Type R/W provides for data to be written, read and erased many time over the recording surface(s) of the disk.
Type WO provides for data once written to be read a multiplicity of times. Data shall not be erased nor amended.
Multisession (incremental write operations) recording may be performed on type WO disks.
The disk shall be of the same Type if recorded on both sides, A and B. Each side shall have a nominal capacity of 4,58 Gbytes,
irrespective of the Type. The format specifies two sector sizes and allows for emulation of two further sizes.
This International Standard specifies
− the conditions for conformance testing and the Reference Drive;
− the environments in which the cartridges are to be operated and stored;
− the mechanical, physical and dimensional characteristics of the cartridge so as to provide mechanical interchangeability
between data processing systems;
− the format of the information on the disk, both embossed and user-written, including the physical disposition of the tracks
and sectors, the error correction codes, the modulation methods used;
− the characteristics of the embossed information on the disk;
− the thermo-magnetic and magneto-optical characteristics of the disk, enabling processing systems to write data onto the
disk;
− the minimum quality of user-written data on the disk, enabling data processing systems to read data from the disk.
This International Standard provides for interchange between optical disk drives. Together with a standard for volume and file
structure it provides for full data interchange between data processing systems.
2 Conformance
2.1 Optical Disk Cartridge (ODC)
An ODC shall be in conformance with this International Standard if it meets all mandatory requirements specified therein.
A claim of conformance with this International Standard shall specify the Type implemented.
2.2 Generating system
A claim of conformance with this International Standard shall specify which of Type(s) of R/W and WO is (are) supported. A
system generating an ODC for interchange shall be in conformance with this International Standard if it meets the mandatory
requirements of this International Standard for the Type(s) supported.
2.3 Receiving system
A claim of conformance with this International Standard shall specify which Type is implemented.
A system receiving an ODC for interchange shall be in conformance with this International Standard if it is able to process any
recording made on the cartridge according to 2.1 on the Type(s) specified.
2.4 Compatibility statement
A claim of conformance with this International Standard shall include a statement listing any other Optical Disk Cartridge
Standard supported by the system for which conformance is claimed. This statement shall specify the number of the
Standard(s), including, where appropriate, the ODC Type(s), or the Types of side, and whether support includes reading only
or both reading and writing.
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ISO/IEC 22092:2002 (E)
3 Normative reference
The following normative document contains provisions which, through reference in this text, constitute provisions of this
International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not
apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of
applying the most recent edition of the normative document indicated below. For undated references, the latest edition of the
normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International
Standards.
IEC 60950-1, Information technology equipment — Safety — Part 1: General requirements
4 Terms and definitions
For the purposes of this International Standard, the following terms and definitions apply.
4.1 asymmetry
The deviation between the centre levels of the signals which give maximum and minimum amplitude.
4.2 band
An annular area within the user zone on the disk having a constant clock frequency.
4.3 case
The housing for an optical disk that protects the disk and facilitates disk interchange.
4.4 clamping zone
The annular part of the disk within which the clamping force is applied by the clamping device.
4.5 control track
A track containing the information on media parameters and format necessary for writing, reading and erasing the remaining
tracks on the optical disk.
4.6 Cyclic Redundancy Check (CRC)
A method for detecting errors in data.
4.7 defect management
A method for handling the defective areas on the disk.
4.8 disk reference plane
A plane defined by the perfectly flat annular surface of an ideal spindle onto which the clamping zone of the disk is clamped,
and which is normal to the axis of rotation.
4.9 emulation
Technique whereby a number of lesser size logical sectors may be recorded into a single larger size physical sector.
4.10 entrance surface
The surface of the disk on to which the optical beam first impinges.
4.11 Error Correction Code (ECC)
An error-detecting code designed to correct certain kinds of errors in data.
4.12 format
The arrangement or layout of information on the disk.
4.13 hub
The central feature on the disk, which interacts with the spindle of the disk drive to provide radial centering and the clamping
force.
4.14 interleaving
The process of allocating the physical sequence of units of data so as to render the data more immune to burst errors.
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ISO/IEC 22092:2002(E)
4.15 Kerr rotation
The rotation of the plane of polarization of an optical beam upon reflection from the recording layer as caused by the magneto-
optical Kerr effect.
4.16 land and groove
A trench-like feature of the disk, applied before the recording of any information, and used to define the track location. The
groove is located nearer to the entrance surface than the land with which it is paired to form a track. Recording is performed on
both land and groove.
4.17 logical track
A number of logical sectors that are grouped together and defined to constitute a uniquely addressable track to the recording
system. The first sector of each logical track is assigned sector number 0.
4.18 mark
A feature of the recording layer which may take the form of a magnetic domain, a pit, or any other type or form that can be
sensed by the optical system. The pattern of marks represents the data on the disk.
NOTE - Subdivisions of a sector which are named "mark" are not marks in the sense of this definition.
4.19 mark edge
The transition between a region with a mark and one without a mark or vice versa, along the track.
4.20 mark edge recording
A recording method which uses a mark edge to represent a Channel bit.
4.21 optical disk
A disk that will accept and retain information in the form of marks in a recording layer, that can be read with an optical beam.
4.22 optical disk cartridge (ODC)
A device consisting of a case containing an optical disk.
4.23 physical track
The path which is followed by the focus of the optical beam during one revolution of the disk. This path is not directly
addressable.
4.24 polarization
The direction of polarization of an optical beam is the direction of the electric vector of the beam.
NOTE - The plane of polarization is the plane containing the electric vector and the direction of propagation of the beam. The polarization is right-handed
when to an observer looking in the direction of propagation of the beam, the end-point of the electric vector would appear to describe an ellipse in the
clockwise sense.
4.25 pre-recorded mark
A mark so formed as to be unalterable by magneto-optical means.
4.26 read power
The read power is the optical power, incident at the entrance surface of the disk, used when reading.
4.27 recording layer
A layer of the disk on, or in, which data is written during manufacture and/or use.
4.28 recording track
Either a land or groove feature of the disk where recording may be performed.
4.29 Reed-Solomon code
An error detection and/or correction code which is particularly suitedtothe correctionoferrors whichoccurinburstsor are
strongly correlated.
4.30 space
The area between marks along the track.
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ISO/IEC 22092:2002 (E)
4.31 spindle
The part of the disk drive which contacts the disk and/or hub.
4.32 substrate
A transparent layer of the disk, provided for mechanical support of the recording layer, through which the optical beam
accesses the recording layer.
4.33 track pitch
The distance between land track centrelines to adjacent groove track centerlines, measured in a radial direction.
4.34 write-inhibit hole
A hole in the case which, when detected by the drive to be open, inhibits both write and erase operations.
4.35 write-once functionality
A technique whereby a rewritable MO ODC is restricted to initialization and writing once only.
4.36 zone
An annular area of the disk.
5 Conventions and notations
5.1 Representation of numbers
A measured value is rounded off to the least significant digit of the corresponding specified value. It implies that a specified
value of 1,26 with a positive tolerance of +0,01, and a negative tolerance of -0,02 allows a range of measured values from
1,235 to 1,275.
Letters and digits in parentheses represent numbers in hexadecimal notation.
The setting of a bit is denoted by ZERO or ONE.
Numbers in binary notation and bit combinations are represented by strings of the digits 0 and 1.
Numbers in binary notation and bit combinations are shown with the most significant bit to the left.
Negative values of numbers in binary notation are given in TWO's complement.
In each field the data is recorded so that the most significant byte (byte 0) is recorded first. Within each byte the least
significant bit is numbered 0 and is recorded last, the most significant bit (numbered 7 in an 8-bit byte) is recorded first. This
order of recording applies also to the data input of the Error Detection and Correction circuits and their output.
Unless otherwise stated, groups of decimal digits of the form xx . x/yy . y indicate that the value xx . x applies to
4 096-byte sectors, yy . y applies to 2 048-byte sectors.
5.2 Names
The names of entities, e.g. specific tracks, fields, etc., are given with a capital initial.
6 Listofacronyms
ALPC Auto Laser Power Control
AM Address Mark
CRC Cyclic Redundancy Code
DDS Disk Definition Structure
DMA Defect Management Area
DMP Defect Management Pointers
ECC Error Correction Code
EDAC Error Detection And Correction
ID Identifier
LBA Logical Block Address
LSB Least Significant Byte
MO Magneto-Optical
MSB Most Significant Byte
ODC Optical Disk Cartridge
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ISO/IEC 22092:2002(E)
PA Postamble
PDL Primary Defect List
PEP Phase-Encoded Part of the Control Tracks
RLL Run Length Limited (code)
R-S Reed-Solomon (code)
R/W Rewritable
R-S/LDC Reed-Solomon Long Distance Code
SCSI Small Computer System Interface
SDL Secondary Defect List
SFP Standard Formatted Part of the Control Tracks
SM Sector Mark
SWF Sector Written Flag
TA Transition Area
TIA Time Interval Analyzer
VFO Variable Frequency Oscillator
WO Write Once
ZCAV Zoned Constant Angular Velocity
7 General description of the optical disk cartridge
The optical disk cartridge which is the subject of this International Standard consists of a case containing an optical disk.
The case is a protective enclosure for the disk. It has access windows covered by a shutter. The windows are automatically
uncovered by the drive when the cartridge is inserted into it.
The optical disk consists of two sides assembled together with their recording layers on the inside.
The optical disk may be recordable on both sides. Data can be written onto the disk as marks in the form of magnetic domains
in the recording layer and can be erased from it with a focused optical beam, using the thermo-magnetic effect. The data can
be read with a focused optical beam, using the magneto-optical effect. The beam accesses the recording layer through the
transparent substrate of the disk.
Part of the disk contains read-only data in the form of pre-embossed pits. This data can be read using the diffraction of the
optical beam by the embossed pits.
The entire disk may be used for write once recording of data using the thermo-magnetic effect. This data can be read using the
magneto-optic effect.
8 General requirements
8.1 Environments
8.1.1 Test environment
The test environment is the environment where the air immediately surrounding the optical disk cartridge has the following
properties:
temperature : 23 °C ± 2 °C
relative humidity : 45 % to 55 %
atmospheric pressure : 60 kPa to 106 kPa
air cleanliness : Class 100 000 (see annex A)
No condensation on or in the optical disk cartridge shall occur. Before testing, the optical disk cartridge shall be conditioned in
this environment for 48 hours minimum. It is recommended that, before testing, the entrance surface of the disk be cleaned
according to the instructions of the manufacturer of the disk.
Unless otherwise stated, all tests and measurements shall be made in this test environment.
8.1.2 Operating environment
This International Standard requires that an optical disk cartridge which meets all requirements of this Standard in the
specified test environment provides data interchange over the specified ranges of environmental parameters in the operating
environment. ( See also annex R.)
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ISO/IEC 22092:2002 (E)
The operating environment is the environment where the air immediately surrounding the optical disk cartridge has the
following properties:
temperature :5°Cto55°C
relative humidity : 3 % to 85 %
3 3
absolute humidity : 1 g/m to 30 g/m
atmospheric pressure : 60 kPa to 106 kPa
temperature gradient : 10 °C/h max.
relative humidity gradient : 10 %/h max.
air cleanliness : office environment (see also annex R.1)
magnetic field strength at the recording layer for
any condition under which a beam is in focus : 32 000 A/m max. (see also annex R.2)
magnetic field strength at the recording layer
during any other condition : 48 000 A/m max.
No condensation on or in the optical disk cartridge shall occur. If an optical disk cartridge has been exposed to conditions
outside those specified in this clause, it shall be acclimatized in an allowed operating environment for at least 2 hours before
use. (See also annex S).
8.1.3 Storage environment
The optical disk cartridge without any protective enclosure shall not be stored in an environment outside the range allowed for
storage. The storage environment is defined as an environment where the air immediately surrounding the optical disk
cartridge has the following properties:
temperature :-10°Cto55°C
relative humidity : 3 % to 90 %
3 3
absolute humidity : 1 g/m to 30 g/m
atmospheric pressure : 60 kPa to 106 kPa
temperature gradient : 15 °C/h max.
relative humidity gradient : 10 %/h max.
air cleanliness : Office environment (see also annex R.1)
magnetic field strength at the recording layer : 48 000 A/m max.
No condensation on or in the optical disk cartridge shall occur.
8.1.4 Transportation
This International Standard does not specify requirements for transportation; guidance is given in annex T.
8.2 Temperature shock
The optical disk cartridge shall withstand a temperature shock of up to 20 °C when inserted into, or removed from, the drive.
8.3 Safety requirements
The cartridge shall satisfy the safety requirements of IEC 60950, when used in the intended manner or in any foreseeable use
in an information processing system.
8.4 Flammability
The cartridge and its components shall be made from materials that comply with the flammability class for HB materials, or
better, as specified in IEC 60950.
9 Reference Drive
The Reference Drive is a drive several critical components of which have well defined properties and which is used to test the
write, read and erase parameters of the disk for conformance to this International Standard. The critical components vary from
6 ISO/IEC 2002 - All rights reserved
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ISO/IEC 22092:2002(E)
test to test. This clause gives an outline of all components; components critical for tests in specific clauses are specified
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