ISO/IEC 14517:1996
(Main)Information technology — 130 mm optical disk cartridges for information interchange — Capacity: 2,6 Gbytes per cartridge
Information technology — 130 mm optical disk cartridges for information interchange — Capacity: 2,6 Gbytes per cartridge
Defines a series of related 130 mm optical disk cartridges (ODCs). Gives the conditions for conformance testing and the Reference Drive, mechanical, physical and dimensional characteristics, the format of the information, the magneto-optical characteristics and the minimum quality of user-written data.
Technologies de l'information — Cartouches de disque optique de 130 mm pour l'échange d'information — Capacité: 2,6 Gbytes par cartouche
General Information
Standards Content (Sample)
INTERNATIONAL ISO/IEC
STANDARD
First edition
1996-12-15
Information technology - 130 mm optical
disk cartridges for information
interchange - Capacity: 2,6 Gbytes per
cartridge
Technologies de /‘information - Cartouches de dkque optique de
130 mm pour I’kchange d’information - Capacitk 2,6 Gbytes par
cartouche
Reference number
lSQ/IEC 14517:1996(E)
Contents
Page
Section 1 - General
1 Scope
2 Conformance
2.1 Optical Disk Cartridge (ODC)
2.2 Generating system
2.3 Receiving system
2.4 Compatibility statement
3 Normative reference
4 Definitions
4.1 band
4.2 case
4.3 clamping zone
4.4 control track
4.5 Cyclic Redundancy Check (CRC)
4.6 defect management
direct overwrite
4.7
4.8 disk reference blane
4.9 entrance surface
4.10 Error Correction Code (ECC)
4.11 format
4.12 hub
4.13 interleaving
4.14 Kerr rotation
4.15 land and groove
4.16 logical track
4.17 mark
4.18 mark edge
4.19 mark edge recording
4.20 optical disk
4.21 optical disk cartridge (ODC)
4.22 physical track
4.23 polarization
4.24 pre-recorded mark
@lSO/lEC 1996
AIP rights reserved. Unless otherwise specified, 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.
BSO/IEC Copyright Office l Case Postale 56 l CH-1211 Gengve 20 l Switzerland
Printed in Switzerland
ii
OISO/IEC
4.25 read power
4.26 recording layer
4.27 Reed-Solomon code
4.28 space
4.29 spindle
4.30 substrate
4.31 track pitch
4,32 write-inhibit hole
4.33 write-once functionality
4.34 zone
5 Conventions and notations
5.1 Representation of numbers
5.2 Names
6 List of acronyms
7 General description of the optical disk cartridge
8 General requirements
8.1 Environments
8.1.1 Test environment
8.1.2 Operating environment
8.1.3 Storage environment
8.1.4 Transportation
8.2 Temperature shock
8.3 Safety requirements
8.4 Flammability
9 Reference Drive
9.1 Optical system
9.2 Optical beam
9.3 Read channels
9.4 Tracking
9.5 Rotation of the disk
Section 2 - Mechanical and physical characteristics
10 Dimensional and physical characteristics of the case
10.1 General description of the case
10.2 Relationship of Sides A and B
10.3 Reference axes and case reference planes
10.4 Case drawings
10.5 Dimensions of the case
10.5.1 Overall dimensions
10.5.2 Location hole
10.5,3 Alignment hole
10.5.4 Surfaces on Reference Planes P
10.5.5 Insertion slots and detent features
X0.5.6 Gripper slots
10.5.7 Write-inhibit holes
10.5.8 Media sensor holes
10.5.9 FIead and motor window
10.5.10 Shutter
10.5.11 Slot for shutter opener
QISO/IEC
10.5.12 Shutter sensor notch
10.5.13 User label areas
10.6.1 Materials
10.6.2 Mass
10.6.3 Edge distortion
10.6.4 Compliance
10.6.5 Shutter opening force
10.7 Drop test
11 Dimensional, mechanical and physical characteristics of the disk
11.1 General description of the disk
11.2 Reference axis and plane of the disk
11.3 Dimensions of the disk
11.3.1 Hub dimension
11.4 Mechanical characteristics
11.4.1 Material
11.4.2 Mass
11.4.3 Moment of inertia
11.4.4 Imbalance
11.4.5 Axial deflection
11.4.6 Axial acceleration
11.4.7 Radial runout
11.4.8 Radial acceleration
11.4.9 Tilt
11.5 Optical characteristics
11.5.1 Index of refraction
11.5.2 Thickness
11.5.3 Birefringence
11.5.4 Vertical Birefringence
11.5.5 Reflectance
82 Interface between cartridge and drive
12.1 Clamping method
12.2 Clamping force
12.3 Capture cylinder
12.4 Disk position in the operating condition
Section 3 - Format of information
13 Track geometry
13.1 Track shape
13.2 Direction of track spiral
13.3 Track pitch
13.4 Logical track number
13.5 Physical track number
14 Track format
14.1 Physical track layout
14.2 Logical track layout
14.3 Radial alignment
14.4 Sector number
15 Sector format
15.1 Sector layout
ISOIIEC 14517:1996 (E)
OISOIIEC
15.2 Sector Mark
15.3 VFO fields
15.4 Address Mark (AM)
15.5 ID fields
15.6 Postamble (PA)
15.7 Gap
15.8 Flag
15.9 Auto Laser Power Control (ALPC)
15.10 Sync
15.11 Data field
15.11.1 User data bytes
15.11.2 CRC and ECC bytes
15.11.3 Bytes for the Sector Written Flag (SWF)
15.11.4 Bytes following the SWF in the Data field of the 512-byte sector format
15.11.5 Resync bytes
15.12 Buffer field
16 Recording code
17 Formatted Zone
17.1 General description of the Formatted Zone
17.2 Division of the Formatted Zone
17.2.1 Lead-in Zone
17.2.2 Manufacturer Zones
17.2.3 User Zone
17.2.4 Reflective Zone
17.2.5 Control Track Zones
17.3 Control Track PEP Zone
17.3.1 Recording in the PEP Zone
17.3.2 Format of the tracks of the PEP Zone
17.4 Control Track SFP Zones
17.4.1 Duplicate of the PEP information
17.4.2 Media information
17.4.3 System Information
18 Layout of the User Zone
18.1 General description of the User Zone
18.2 Divisions of the User Zone
18.3 User Area
18.4 Defect Management Areas (DMAs)
18.5 Disk Definition Structure (DDS)
18.6 Rewritable Zone
18.6.1 Location
18.6.2 Partitioning
18.7 Embossed Zone
18.7.1 Location
18.7.2 Partitioning
18.7.3 Parity sectors
18.8 Write Once Zone
18.8.1 Location
18.8.2 Partitioning
19 Defect Management in the Rewritable and Write Once Zones
OISOIIEC
19.1 Initialization of the disk
19.2 Certification
19.2.1 Slipping Algorithm
19.2.2 Linear Replacement Algorithm
19.3 Disks not certified
19.4 Write procedure
19.5 Primary Defect List (PDL)
19.6 Secondary Defect List (SDL)
Section 4 - Characteristics of embossed information
20 Method of testing
20.1 Environment
20.2 Use of the Reference Drive
20.2.1 Optics and mechanics
20.2.2 Read power
20.2.3 Read channels
20.2.4 Tracking
20.3 Definition of signals
21 Signal from grooves
21.1 Cross-track signal
21.2 Cross Track Minimum Signal
21.3 Push-pull signal
21.4 Divided push-pull signal
Phase depth
21.5
21.6 Track location
22 Signals from Headers
22.1 Sector Mark Signals
22.2 VFO signals
22.3 Address Mark, ID and PA signals
22.4 Timing jitter
23 Signals from embossed Recording fields
23.1 Signal amplitude
23.2 Modulation method offset
23.3 Timing Jitter
23.4 Byte Errors
24 Signals from Control Track PEP marks
Section 5 - Characteristics of the recording layer
25 Method of testing
25.1 Environment
25.2 Reference Drive
25.2.1 Optics and mechanics
25.2.2 Read power
25.2.3 Read Channel
25.2.4 Tracking
25.2.5 Signal detection for testing purposes
25.3 Write conditions
25.3.1 Write pulse and power
25.3.2 Write magnetic field
Vi
OHSQIIEC
25.3.3 Pulse power determination
253.4 Media power sensitivity
25.4 Erase conditions
25.4.1 Erase power
254.2 Erase magnetic field
25.5 Definition of signals
26 Magneto-optical characteristics
26.1 Figure of merit for magneto-optical signal
26.2 Imbalance of magneto-optical signal
27 Write characteristics
27.1 Resolution
27.2 Narrow-band signal-to-noise ratio
27.3 Cross-talk ratio
27.3.1 Rewritable track test method
27.3.2 Embossed track test method
27.4 Timing Jitter
27.5 Media thermal interaction
28 Erase power determination
Section 6 - Characteristics of user data
29 Method of testing
29.1 Environment
29.2 Reference Drive
29.2.1 Optics and mechanics
29.2.2 Read power
29.2.3 Read amplifiers
29.2.4 Mark Quality
29.2.5 Channel bit clock
29.2.6 Binary-to-digital converters
29.2.7 Error correction
29.2.8 Tracking
30 Minimum quality of a sector
30.1 Headers
30.1.1 Sector Mark
30.1.2 ID fields
30.2 User-written data
30.2.1 Recording field
30.2.2 Byte errors
30.2.3 Modulation method offset
30.2.4 Timing jitter
31 Data interchange requirements
31.1 Tracking
31.2 User-written data
31.3 Embossed data
3L4 Quality csf disk
vii
0ISO/IEC
ISO/IEC 14517: 1996 (E)
Annexes
A - Air cleanliness class 100 000
B - Edge distortion test
C - Compliance test
D - Test method for measuring the adsorbent force of the hub
E - CRC for ID fields
F - Interleave, CRC, ECC, Resync for the data field
G - Determination of Resync pattern
H - Read Channel for measuring NBSNR and jitter
J - Timing jitter measuring procedure
K - Definition of write pulse shape
L - Measurement of figure of merit
M - Implementation Independent Mark Quality Determination (IIMQD) for the interchange of recorded media
N - Requirements for interchange
P - Measurement implementation for Cross-track signal
Q - Office environment
ILP - Derivation of the operating climatic environment
S - Transportation
T - Sector retirement guidelines
U - Track deviation measurement
V - Values to be implemented in existing and future standards
W - Measurement of the vertical birefringence of the substrate
X - Guidelines for the use of Type WO and WO-DOW ODCs
Y - Laser power calibration for evaluation of media power sensitivity
..e
Vlll
ISOAEC 14517: 1996 (E)
@ISO/IEC
Foreword
IS0 (the International Organization for Standardization) and IEC (the International 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 committees collaborate in fields of mutual interest. Other
international organizations, 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, ISO/IEC JTC 1. 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.
International Standard ISO/IEC 145 17 was prepared by Joint Technical Committee ISO/IEC JTC 1, Injknatio~z technology,
Subcommittee SC 23, Optical disk cartridges for information interchange.
Annexes A to P form an integral part of this International Standard. Annexes Q to Y are for information only.
This page intentionally left blank
INTERNATIONAL STANDARD OISO/IEC ISO/IEC 14517:1996 (E)
Information technology - 130 mm optical disk cartridges for information
interchange - Capacity: 2,6 Gbytes per cartridge
Section 1 - General
1 Scope
This International Standard defines a series of related 130 mm optical disk cartridges (ODCs) by using a number of Type
designations.
A disk has two sides, called Side A and Side B. Each side can have a nominal capacity of 1,3 Gbytes.
provides for data to be written, read and erased many times over the recording surface of the corresponding
Type R/w
disk side, using thermo-magnetic and magneto-optical effects.
Type P-ROM provides for a part of the disk surface to be pre-recorded and reproduced by stamping or other means. This
part of the disk is read without recourse to the magneto-optical effect. All parts which are not pre-recorded
provide for data to meet the requirements of Type R/W.
Type O-ROM provides for the whole of the disk surface to be pre-recorded and reproduced by stamping or other means.
The corresponding disk sides are read without recourse to the magneto-optical effect.
Type DOW provides for data to be written and read many times over the recording surface of the corresponding disk
side, using the direct overwrite thermo-magnetic and magneto-optical effects requiring a single external
magnetic field.
provides for a part of the disk surface to be pre-recorded and reproduced by stamping or other means. This
Type P-DOW
part of the disk is read without recourse to the magneto-optical effect. All parts which are not pre-recorded
provide for data to meet the requirements of Type DOW.
provides write once, read multiple functionality using the thermo-magnetic and magneto-optical effects.
Type WO
Type WO-DOW provides write once, read multiple functionality using the direct overwrite thermo-magnetic and magneto-
optical effects.
In addition, for each Type, this International Standard provides for cartridges with a sector size of 512 bytes and cartridges
with a sector size of 1 024 bytes. All sectors of a disk are the same size.
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 magneto-optical characteristics of the disk, enabling processing systems to writedata 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.
0ISO/IEC
2 Conformance
21 . Optical Disk Cartridge: A claim of conformance shall specify the Type of the ODC. It shall be in conformance
with this International Standard if it meets all mandatory requirements specified therein for that Type.
Generating system: A claim of conformance with this International Standard shall specify which of Types R/W,
22 .
DOW, P-ROM, P-DOW, O-ROM, WO and WO-DOW 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 Standard for the Type(@)
supported.
23 . Receiving system: A claim of conformance with this International Standard shall specify which Type(s) is(are)
supported.
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.
24 . Compatibility statement: A claim of conformance with this International Standard shall include a statement
listing any other International 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.
3 Normative reference
The following standard contains provisions which, through reference in this text, constitute provisions of this International
Standard. At the time of publication, the edition indicated was valid. All 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 standard indicated below. Members of IEC and IS0 maintain registers of currently valid International
Standards.
IEC 950: 199 I, Safety of information technology equipment, including electrical business equipment.
4 Definitions
For the purposes of this International Standard, the following definitions apply.
41 . band: An annular area within the user zone on the disk having a constant clock frequency.
42 . case: The housing for an optical disk, that protects the disk and facilitates disk interchange.
43 . clamping zone: The annular part of the disk within which the clamping force is applied by the clamping device.
44 . 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.
45 . Cyclic Redundancy Check (CRC): A method for detecting errors in data.
46 . defect management: A method for handling the defective areas on the disk.
47 . direct overwrite: a thermo-magnetic recording method using a specially designed media that does not require a
separate erase pass.
48 . 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.
49 . entrance surface: The surface of the disk on to which the optical beam first impinges.
4.10 Error Correction Code (ECC): A n error-detecting code designed to correct certain kinds of errors in data.
4.11 format: The arrangement or layout of information on the disk.
4.12 hub: The central feature on the disk which interacts with the spindle of the disk drive to provide radial centring and
the clamping force
4.13 interleaving: The process of allocating the physical sequence of units of data so as to render the data more immune
to burst errors.
OISO/IEC ISO/IEC 14517:1996 (E)
plane of polarization ofan optical beam upon reflection from the recording layer
4.14 Kerr rotation: The rotation of the
as caused by the magneto-optical Kerr effect.
4.15 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.
4.16 logical track: Either 3 1 consecutive sectors for 5 12-byte sector disks or 17 consecutive sectors for disks with 1 024-
byte sector in one or more physical tracks. The first sector of each logical track is assigned sector number 0.
4.17 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 1 - Subdivisions of a sector which are named “mark” are not marks in the sense of this definition.
4.18 mark edge: The transition between a region with a mark and one without a mark or vice versa, along the track.
4.19 mark edge recording: A recording method which uses a mark edge to represent a Channel bit.
4.20 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.
4.21 optical disk cartridge (ODC): A device consisting of a case containing an optical disk.
4.22 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.
4.23 polarization: The direction of polarization of an optical beam is the direction of the electric vector of the beam.
Note 2 - 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.
4.24 pre-recorded mark: A mark so formed as to be unalterable by magneto-optical means.
read power: The read power is the optical power, incident at the entrance surface of the disk, used when reading.
4.25
Note 3 - It is specified as a maximum power that may be used to the written data. Lower power may be used providing that the signal-to-
are met.
noise ratio and other requirements of this International Standard
4.26 recording layer: A layer of the disk on, or in, which data is written during manufacture and/or use.
4.27 An error detection and/or correction code which is particularly suited to the correction of
Reed-Solomon code:
errors which occur in bursts or are strongly correlated.
4.28 space: The area between marks along the track.
4.29 spindle: The part of the disk drive which contacts the disk and/or hub.
4.30 substrate: A transparent layer of the disk, provided for mechanical support of the recording layer, through which the
optical beam accesses the recording layer.
4.31
track pitch: The distance between adjacent track centrelines, measured in a radial direction.
4.32 write-inhibit hole: A hole in the case which, when detected by the drive to be open, inhibits both write and erase
operations.
4.33 write-once functionality: A technique whereby a rewritable MO ODC is restricted to initialization and writing
once only; erase is not permitted.
4.34
zone: An annular area of the disk.
OISO/IEC
Conventions and notations
51 0 numbers
resentation of
Rep
-
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 +O,Ol, and a negative tolerance of -0,02 allows a range of measured values from
1,235 to 1,275.
-
represent numbers in hexadecimal notation.
Letters and digits in parentheses
-
The setting of a bit is denoted by ZERO or ONE.
-
Numbers in binary notation and bit combinations are represented by strings of 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 &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 1 024-
byte sectors and that the value yy . . . y applies to 5 12-byte sectors.
52 0
Names
The names of entities, e.g. specific tracks, fields, etc., are given with a capital initial.
6 List of acronyms
ALPC Auto Laser Power Control
Address Mark
CRC Cyclic Redundancy Code
DDS Disk Definition Structure
DMA Defect Management Area
DMP Defect Management Pointers
DOW Direct overwrite
Error Correction Code
ECC
EDAC Error Detection And Correction
ID Identifier
LBA Logical Block Address
LSB Least Significant Byte
MO Magneto-Optical
Most Significant Byte
MSB
NBSNR Narrow-Band Signal-to-Noise Ratio
ODC Optical Disk Cartridge
O-ROM Optical Read Only Memory
Postamble
PA
PDL Primary Defect List
Phase-Encoded Part of the Control Tracks
PEP
P-DOW Partial ROM direct overwrite
P-ROM Partial Read Only Memory
Run Length Limited (code)
KL(l97)
R-S Reed-Solomon (code)
Rewritable
R-S/LDC Reed-Solomon Long Distance Code
Small Computer System Interface
SCSI
OISO/IEC
ISO/IEC 14517: 1996 (E)
SDL
Secondary Defect List
SFP Standard Formatted Part of the Control Tracks
SM
Sector Mark
TIA
Time Interval Analyzer
VFO Variable Frequency Oscillator
wo Write Once
WO-DOW Write once direct overwrite
ZCAV
Zoned Constant Angular Velocity
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.
windows covered The windows are
The case is a protective enclosure for the disk. It has access shutter. automatically
bY a
uncovered by the drive when the cartridge is in serted 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. Data may be
written over existing data by modulating the intensity of the optical beam. 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 or the entire disk may contain 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
81 b 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:
: 23 “C t 2 OC
temperature
relative humidity : 45 % to 55 %
: 60 kPa to 106 kPa
atmospheric pressure
: Class 100 000 (see annex A)
air cleanliness
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 h 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.
Operating environment
8.1.2
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 Q).
The operating environment is the environment where the air immediately surrounding the optical disk cartridge has the
following properties:
: 5 “C to 55 “C
temperature
:3%to85%
relative humidity
: 1 g/m3 to 30 g/m3
absolute humidity
OISO/IEC
: 60 kPa to 106 kPa
atmospheric pressure
: 10”CYhmax.
temperature gradient
: 10 %/h max.
relative humidity gradient
: office environment (see also Q.l)
air cleanliness
magnetic field strength at the recording layer for
: 32 000 A/m max. (see also Q.2)
any condition under which a beam is in focus
magnetic field strength at the recording layer
: 48 000 A/m max
during any other condition
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 R).
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:
: -10 “C to 55 “C
temperature
: 3 % to 90 %
relative humidity
: 1 g/m3 to 30 g/m3
absolute humidity
: 60 kPa to 106 kPa
atmospheric pressure
: 15 “Whmax.
temperature gradient
: lO%/hmax.
relative humidity gradient
: Office environment (see also Q.1)
air cleanliness
: 48 000 A/m max.
magnetic field strength at the recording layer
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 S.
82 0 Temperature shock
The optical disk cartridge shall withstand a temperature shock of up to 20 “C when inserted into, or removed from, the drive.
83 b Safety requirements
The cartridge shall satisfy the safety requirements of Standard IEC 950, when used in the intended manner or in any foreseeable
use in an information processing system.
84 l 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 950.
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
test to test. This clause gives an outline of all components; components critical for tests in specific clauses are specified in those
clauses.
91 l
Optical system
The basic set-up of the optical system of the Reference Drive used for measuring the write, read and erase parameters is shown
in figure 1. Different components and locations of components are permitted, provided that the performance remains the same
as that of the set-up in figure 1. The optical system shall be such that the detected light reflected from the entrance surface of
the disk is minimized so as not to influence the accuracy of the measurements.
OISO/IEC ISO/IEC 14517:1996 (E)
I2
;“““““““““‘“‘--“““““““‘~-~--------~~-~~~-~--~--------~---~---~~~---------------------~------------------
I
:
I
K3
I
: Ch.2 j
t I I I
I
+ 0
,
I
I
K2
I
:
:
T
M
A H Optional half-wave plate
Laser diode
B Collimator lens Tracking signals from photodiode K3
Il? 12
C Optional shaping prism J Polarizing beam splitter
Ch.1 Channel 1 Photodiodes for Channels 1 and 2
KlY K2
Ch.2 Channel 2 Split photodiode
K3
D Beam splitter
d.c.-coupled amplifiers
h L2
E Polarizing beam splitter M Tracking Channel (see 20.3)
F Objective lens N
Phase retarder
G Optical disk
Figure 1 - Optical system of the Reference Drive
In the absence of polarization changes in the disk, the polarizing beam splitter J shall be aligned to make the signal of detector
K1 equal to that of detector K2. The direction of polarization in this case is called the neutral direction. The phase retarder N
shall be adjusted such that the optical system does not have more than 2,5” phase retardation between the neutral polarization
and the polarization perpendicular to it. This position of the retarder is called the neutral position.
The phase retarder can be used for the measurement of the narrow-band signal-to-noise ratio (see 27.2).
The beam splitter 3 shall have a p-s intensity reflectance ratio of at least 100.
The beam splitter E shall have an intensity reflectance R, from F to H of nominally 0,30 for the neutral polarization direction.
The reflectance R, for the polarization perpendicular to the neutral direction shall be nominally 0,95. The actual value of R,
shall not be smaller than 0,90.
The imbalance of the magneto-optical signal is specified for a beam splitter with nominal reflectance. If the measurement is
made on a drive with reflectance’s R,’ and R,’ for beam splitter E, then the measured imbalance shall be multiplied by
/
RSR
P
/
S
RPR
vl
to make it correspond to the nominal beam splitter E.
OISO/IEC
The output of Channel 1 is the sum of the currents through photodiodes K1 and K2, and is used for reading embossed marks.
The output of Channel 2 is the difference between photo-diode currents, and is used for reading user-written marks with the
magneto-optical effect.
. Optical beam
The focused optical beam used for writing, reading and erasing data shall have the following properties:
+lO nm
Wavelength (h)
a>
685 nm
-10 nm
Wavelength (h) divided by the
b)
numerical aperture of the objective
IdNA = 1,245 pm 2 0,018 pm
lens (NA)
0,85 ~fr 0,05
Filling D/W of the aperture of the
C>
objective lens
Variance of the wavefront of the 0 to x2/ 330
d)
optical beam near the recording layer
after passing through an ideal substrate
Linear - parallel or perpendicular to the groove
Polarization
e>
where appropriate
Extinction ratio 0,Ol max.
f)
The optical power and pulse width for writing, reading and erasing are specified in later clauses of this standard.
g>
aperture and W is the beam diameter of the Gaussian beam where the intensity is l/e2 of the
D is the diameter of the lens
maximum intensity.
ratio is the ratio of the minimum over the maximum power observed behind a linear polarizer in the optical
The extinction
beam, which is rotated over at least 180”.
93 . Read channels
Two read channels shall be provided to generate signals from the marks in the recording layer. Channel 1 shall be used for
reading the embossed marks, using the diffraction of the optical beam by the marks. Channel 2 shall be used for reading the
written marks, using the rotation of the polarization of optical beam due to the magneto-optical effect of the marks. The read
amplifiers after the photo-detectors in Channel 1 and Channel 2 shall have a flat response within 1 dB from d.c. to 28 MHz.
Unless otherwise stated, the signal of Channel 1 is not equalized before detection. The signal from Channel 2 is not equalized
before detection. The signal shall be low-pass filtered with a 3-pole Butterworth filter with a cut-off frequency of one half the
Channel clock frequency.
94 0 Tracking
The Tracking Channel of the drive provides the tracking error signals to control the servos for the axial and radial tracking of
the optical beam. The method of generating the axial tracking error is not specified for the Reference Drive. The radial tracking
error is generated by a split photodiode detector in the tracking Channel. The division of the diode runs parallel to the image of
the tracks on the diode.
The requirements for the accuracy with which the focus of the optical beam must follow the tracks is specified in 20.2.4.
95 . Rotation of the disk
The spindle shall position the disk as specified in 12.4. It shall rotate the disk at 50,O Hz _ + 0,5 Hz. The direction of rotation
shall be counter-clockwise when viewed from the objective lens of the disk side being tested.
OISO/IEC
Section 2 - Mechanical and physica characteristics
1Q Dimensional and physical characteristics of the case
10.1
General description of the case
The case (see figure 3) is a rigid protective container of rectangular shape. It has spindle windows on both sides to allow the
spindle of the drive to clamp the disk by its hub. Both sides of the case have a head window, one for the optical head of the
drive, the other for the magnetic head providing the necessary magnetic fields. A shutter uncovers the windows upon insertion
into the drive, and automatically covers them upon removal from the drive. The case has write-inhibit, reflectance detection,
and rotation direction detection features, and gripper slots for an autochanger.
10.2 Relationship of Sides A and B
The features essential for physical interchangeability are represented in figure 3. When Side A of the cartridge faces upwards,
of the case are identical as far as the features given here are concerned,
Side A of the disk faces downwards. Sides A and B
one side only.
except as noted below. The description is given for References to Sides A and B can be changed to B or A
respectively.
Only the shutter and the slot for the shutter opener, described in 10.5.10 and 10.5.11, are not identical for both sides of the case.
10.3
Reference axes and case reference planes
There is a reference plane P for each side of the case. Each reference plane P contains two orthogonal axes X and Y to which
the dimensions of the case are referred. The intersection of the X and Y axes defines the centre of the location hole. The X axis
extends through the centre of the alignment hole.
10.4 Case drawings
The case is represented schematically by the following drawings.
- Figure 2 shows the hub dimensions.
- Figure 3 shows a composite drawing of Side A of the case in isometric form, with the major features identified from Side A.
- Figure 4 shows the envelope of the case with respect to a location hole at the intersection of the X and Y axes and reference
plane P.
- Figure 5 shows the surfaces Sl, S2, S3 and S4 which establish the reference plane P.
- Figure 5a shows the details of surface S3.
- Figure 6 shows the details of the insertion slot and detent.
- Figure 7 shows the gripper slots, used for automatic handling.
- Figure 8 shows the write-inhibit holes.
- Figure 9 shows the media ID sensor holes.
Figure 10 shows the shutter sensor notch.
-
- Figure 11. shows the head and motor window.
- Figure 12 shows the shutter opening features.
Figure 13 shows the capture cylinder.
-
- Figure 14 shows the user label areas.
10.5 Dimensions of the case
operating environment
The dimensions of the case shall be measured in the test environment. The dimensions of the case in an
can be estimated from the dimensions specified in this clause.
10.5.1 Overall dimensions
The total length of the case (see figure 4) shall be
L1 = 153,O mm k 0,4 mm
The distance from the top of the case to the reference axis X shall be
L2 = 127,O mm t 0,3 mm
OISO/IEC
The distance from the bottom of the case to the reference axis X shall be
L3 = 26,0 mm k 0,3 mm
The total width of the case shall be
+ 0,o mm
L4 = 135,0 mm
- 0,6 mm
The distance from the left-hand side of the cartridge to the reference axis Y shall be
+ 0,o mm
L5 = 1285 mm
- 0,5 mm
The distance from the right-hand side of the cartridge to the reference axis Y shall be
Lfj = 6,5 mm f. 0,2 mm
The width shall be reduced on the top by the radius
= L4
Rl
originating from a point defined by L5 and
L7 = 101,O mm t 0,3 mm
The two comers of the top shall be rounded with a radius
R2= 1,5mm~O,5mm
and the two comers at the bottom with a radius
R3 = 3,0 mm t 1,0 mm
The thickness of the case shall be
&3= 1l,oomm~o,3omm
The eight long edges of the case shall be rounded with a radius
R4= 1,Ommma.x.
10.52 Location hole
The centre of the location hole (see figure 4) shall coincide with the intersection of the reference axes X and Y. It shall have a
square form with a side length of
+ 0,oo mm
Lg = 4,lO mm
- 0,06 mm
held to a depth of
Llo = 1,5 mm (i.e. typical wall thickness)
after which a cavity extends through to the alignment hole on the opposite side of the case.
The lead-in edges shall be rounded with a radius
R5 = 0,5 mm max.
10.53 Alignment hole
The centre of the alignment hole (see figure 4) shall lie on reference axis X at a distance of
L11 = 122,0 mm t, 0,2 mm
from the reference axis Y.
OISO/IEC
The dimensions of the hole shall be
+ 0,oo mm
L12 = 4,lO mm
- 0.06 mm
and
+ 0,2 mm
L13 = 5,0 mm
- 0,o mm
held to a depth of Llo, after which a cavity extends through to the location hole on the opposite side of the case.
The lead-in edges shall be rounded with radius R5.
Surfaces on Reference Planes P
10.54
The reference plane P (see figures 5 and 5a) for a side of the case shall contain four surfaces (S 1, S2, S3 and S4) on that side of
the case, specified as follows:
-
Two circular surfaces Sl and S2.
Surface S 1 shall be a circular area centred around the square location hole and have a diameter of
D1 = 9,0 mm min.
Surface S2 shall be a circular area centred around the rectangular alignment hole and have a diameter of
02 = 9,0 mm min.
-
Two elongated surfaces S3 and S4, that follow the contour of the cartridge and shutter edges.
Surfaces S3 and S4 are shaped symmetrically.
Surface S3 shall be defined by two circular sections with radii
R6 = 1,5 mm If: 0,l mm
with an origin given by
L14 = 4,0 mm 2 0,I mm
L15 = 86,0 mm t 0,3 mm,
and
R7 = 1,5 mm t 0,l mm
with an origin given by
i&j = 1,9 mm k o,l mm
L17 = 124,5 mm t, 0,3 mm
The arc with radius R7 shall continue on the right hand side with radius
+ 0,2 mm
Rg = 134,0 mm.
- 0,7 mm
which is a dimension resulting from L5 + L14 + R6 with an origin given by L5 and L7. A straight, vertical line shall smoothly
join the arc of R6 to the arc of Rg.
The left-hand side of S3 shall be bounded by radius
R9 = 4,5 mm t 0,3 mm
which is a dimension resulting from Llg + L14 - R6 with an origin given by
L18 = 2,0 mm k 0,l mm
L19 = 115,5 mm * 0,3 mm.
The left-hand side of the boundary shall be closed by two straight lines. The first one shall smoothly join the arc of R6 to the arc
of R9. The second one shall run from the left hand tangent of R7 to its intersection with R9. Along the left hand side of surface
S3 there shall be a zone to protect S3 from being damaged by the shutter. In order to keep this zone at a minimum practical
width
RIO = 4,l mm max.
This radius originates from the same point as Rg.
Insertion slots and detent features
10.5.5
The case shall have two symmetrical insertion slots with embedded detent features (see figure 6). The slots shall have a length
of
ho = 26,0 mm t 0,3 mm
a width of
=i- 0,3 mm
L21 = 6,0 mm
-- 0,O mm
and a depth of
L22 = 3,0 mm t 0,l mm
located
h3 = 2,5 mm + O,2 mm
from reference plane P.
The slots shall have a lead-in chamfer given bv
d
~24 = 0,5 mm max.
L25 = 5,0 mm max.
The detent notch shall be a semi-circle of radius
R11 = 3,0 mm G 0,2 mm
with the origin given by
&(j = 13,0 mm sf: 0,3 mm
L27 = 2,0 mm + 0,l UlITl
L73 = 114,O mm -r- 0,3 mm
The dimensions L2, L26, L73 are interrelated, their values shall be such so that they are all three within specification.
10.5.6 Gripper slots
The case shall have two symmetrical gripper slots (see figure 7) with a depth of
L28 = 5,0 mm k 0,3 mm
from the edge of the case and a width of
L29 = 6,0 mm k 0,3 mm
The upper edge of a slot shall be
L30 = 12,0 mm + 0,3 mm
above the bottom of the case.
OISO/IEC
ISO/IEC 14517: 1996 (E)
10.5.7 Write-inhibit holes
Sides A and I3 shall each have a write-inhibit hole (see figure 8). The case shall include a device for opening and closing each
hole. The hole at the left-hand side of Side A of the case, is the write-inhibit hole for Side A of the disk. The protected side of
the disk shall be made clear by inscriptions on the case or by the fact that the device for Side A of the disk can only be operated
from Side A of the case.
When writing and erasing on Side A of the disk is not allowed, the write-inhibit hole shall be open all through the case. It shall
have a diameter
03 = 4,0 mm min.
Its centre shall be specified by
L31 = 8,0 mm k 0,2 mm
L32= lll,Omm+0,3mm
on Side A of the case.
When writing is allowed on Side A of the disk, the write-inhibit hole shall be closed on Side A of the case, at a depth of
typically Llo, i.e. the wall thickness of the case. In this state, the opposite side of the same hole, at Side B of the case, shall be
closed and not recessed from the reference plane P of Side B of the case by more than
...
INTERNATIONAL ISO/IEC
STANDARD 14517
First edition
1996-12-15
Corrected and reprinted
1998-07-15
Information technology — 130 mm optical
disk cartridges for information
interchange — Capacity: 2,6 Gbytes per
cartridge
Technologies de l’information — Cartouches de disque optique de 130 mm
pour l’échange d’information — Capacité: 2,6 Gbytes par cartouche
Reference number
B C
Contents
Page
Section 1 - General 1
1 Scope 1
2 Conformance 2
2.1 Optical Disk Cartridge (ODC) 2
2.2 Generating system 2
2.3 Receiving system 2
2.4 Compatibility statement 2
3 Normative reference 2
4 Definitions 2
4.1 band 2
4.2 case 2
4.3 clamping zone 2
4.4 control track 2
4.5 Cyclic Redundancy Check (CRC) 2
4.6 defect management 2
4.7 direct overwrite 2
4.8 disk reference plane 2
4.9 entrance surface 2
4.10 Error Correction Code (ECC) 2
4.11 format 2
4.12 hub 2
4.13 interleaving 2
4.14 Kerr rotation 3
4.15 land and groove 3
4.16 logical track 3
4.17 mark 3
4.18 mark edge 3
4.19 mark edge recording 3
4.20 optical disk 3
4.21 optical disk cartridge (ODC) 3
4.22 physical track 3
4.23 polarization 3
4.24 pre-recorded mark 3
©ISO/IEC 1996
All rights reserved. Unless otherwise specified, 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.
ISO/IEC Copyright Office · Case Postale 56 · CH-1211 Genève 20 · Switzerland
Printed in Switzerland
ii
ISO/IEC ISO/IEC 14517:1996 (E)
4.25 read power 3
4.26 recording layer 3
4.27 Reed-Solomon code 3
4.28 space 3
4.29 spindle 3
4.30 substrate 3
4.31 track pitch 3
4.32 write-inhibit hole 3
4.33 write-once functionality 3
4.34 zone 3
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 6
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 13
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 15
iii
10.5.12 Shutter sensor notch 15
10.5.13 User label areas 16
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 17
11.1 General description of the disk 17
11.2 Reference axis and plane of the disk 17
11.3 Dimensions of the disk 17
11.3.1 Hub dimension 17
11.4 Mechanical characteristics 18
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 19
11.4.6 Axial acceleration 19
11.4.7 Radial runout 19
11.4.8 Radial acceleration 19
11.4.9 Tilt 20
11.5 Optical characteristics 20
11.5.1 Index of refraction 20
11.5.2 Thickness 20
11.5.3 Birefringence 20
11.5.4 Vertical Birefringence 20
11.5.5 Reflectance 20
12 Interface between cartridge and drive 21
12.1 Clamping method 21
12.2 Clamping force 21
12.3 Capture cylinder 21
12.4 Disk position in the operating condition 21
Section 3 - Format of information 36
13 Track geometry 36
13.1 Track shape 36
13.2 Direction of track spiral 36
13.3 Track pitch 36
13.4 Logical track number 36
13.5 Physical track number 36
14 Track format 36
14.1 Physical track layout 36
14.2 Logical track layout 37
14.3 Radial alignment 37
14.4 Sector number 37
15 Sector format 37
15.1 Sector layout 37
iv
ISO/IEC ISO/IEC 14517:1996 (E)
15.2 Sector Mark 38
15.3 VFO fields 39
15.4 Address Mark (AM) 40
15.5 ID fields 40
15.6 Postamble (PA) 41
15.7 Gap 41
15.8 Flag 41
15.9 Auto Laser Power Control (ALPC) 42
15.10 Sync 42
15.11 Data field 42
15.11.1 User data bytes 42
15.11.2 CRC and ECC bytes 42
15.11.3 Bytes for the Sector Written Flag (SWF) 43
15.11.4 Bytes following the SWF in the Data field of the 512-byte sector format 43
15.11.5 Resync bytes 43
15.12 Buffer field 43
16 Recording code 43
17 Formatted Zone 44
17.1 General description of the Formatted Zone 44
17.2 Division of the Formatted Zone 44
17.2.1 Lead-in Zone 46
17.2.2 Manufacturer Zones 46
17.2.3 User Zone 47
17.2.4 Reflective Zone 47
17.2.5 Control Track Zones 47
17.3 Control Track PEP Zone 47
17.3.1 Recording in the PEP Zone 47
17.3.2 Format of the tracks of the PEP Zone 48
17.4 Control Track SFP Zones 52
17.4.1 Duplicate of the PEP information 52
17.4.2 Media information 53
17.4.3 System Information 55
18 Layout of the User Zone 57
18.1 General description of the User Zone 57
18.2 Divisions of the User Zone 57
18.3 User Area 57
18.4 Defect Management Areas (DMAs) 60
18.5 Disk Definition Structure (DDS) 60
18.6 Rewritable Zone 62
18.6.1 Location 63
18.6.2 Partitioning 63
18.7 Embossed Zone 63
18.7.1 Location 63
18.7.2 Partitioning 63
18.7.3 Parity sectors 63
18.8 Write Once Zone 64
18.8.1 Location 64
18.8.2 Partitioning 64
19 Defect Management in the Rewritable and Write Once Zones 64
v
19.1 Initialization of the disk 64
19.2 Certification 64
19.2.1 Slipping Algorithm 64
19.2.2 Linear Replacement Algorithm 65
19.3 Disks not certified 65
19.4 Write procedure 65
19.5 Primary Defect List (PDL) 65
19.6 Secondary Defect List (SDL) 66
Section 4 - Characteristics of embossed information 67
20 Method of testing 67
20.1 Environment 67
20.2 Use of the Reference Drive 67
20.2.1 Optics and mechanics 67
20.2.2 Read power 68
20.2.3 Read channels 68
20.2.4 Tracking 68
20.3 Definition of signals 68
21 Signal from grooves 70
21.1 Cross-track signal 70
21.2 Cross Track Minimum Signal 70
21.3 Push-pull signal 71
21.4 Divided push-pull signal 71
21.5 Phase depth 72
21.6 Track location 72
22 Signals from Headers 72
22.1 Sector Mark Signals 72
22.2 VFO signals 72
22.3 Address Mark, ID and PA signals 72
22.4 Timing jitter 73
23 Signals from embossed Recording fields 73
23.1 Signal amplitude 73
23.2 Modulation method offset 73
23.3 Timing Jitter 74
23.4 Byte Errors 74
24 Signals from Control Track PEP marks 74
Section 5 - Characteristics of the recording layer 75
25 Method of testing 75
25.1 Environment 75
25.2 Reference Drive 75
25.2.1 Optics and mechanics 75
25.2.2 Read power 75
25.2.3 Read Channel 75
25.2.4 Tracking 75
25.2.5 Signal detection for testing purposes 75
25.3 Write conditions 75
25.3.1 Write pulse and power 75
25.3.2 Write magnetic field 76
vi
ISO/IEC ISO/IEC 14517:1996 (E)
25.3.3 Pulse power determination 76
25.3.4 Media power sensitivity 76
25.4 Erase conditions 77
25.4.1 Erase power 77
25.4.2 Erase magnetic field 77
25.5 Definition of signals 77
26 Magneto-optical characteristics 77
26.1 Figure of merit for magneto-optical signal 77
26.2 Imbalance of magneto-optical signal 78
27 Write characteristics 78
27.1 Resolution 78
27.2 Narrow-band signal-to-noise ratio 79
27.3 Cross-talk ratio 79
27.3.1 Rewritable track test method 79
27.3.2 Embossed track test method 80
27.4 Timing Jitter 80
27.5 Media thermal interaction 80
28 Erase power determination 81
Section 6 - Characteristics of user data 82
29 Method of testing 82
29.1 Environment 82
29.2 Reference Drive 82
29.2.1 Optics and mechanics 82
29.2.2 Read power 82
29.2.3 Read amplifiers 82
29.2.4 Mark Quality 82
29.2.5 Channel bit clock 83
29.2.6 Binary-to-digital converters 83
29.2.7 Error correction 83
29.2.8 Tracking 83
30 Minimum quality of a sector 83
30.1 Headers 83
30.1.1 Sector Mark 83
30.1.2 ID fields 83
30.2 User-written data 83
30.2.1 Recording field 83
30.2.2 Byte errors 83
30.2.3 Modulation method offset 84
30.2.4 Timing jitter 84
31 Data interchange requirements 84
31.1 Tracking 84
31.2 User-written data 84
31.3 Embossed data 84
31.4 Quality of disk 84
vii
Annexes
A - Air cleanliness class 100 000 85
B - Edge distortion test 86
C - Compliance test 88
D - Test method for measuring the adsorbent force of the hub 90
E - CRC for ID fields 92
F - Interleave, CRC, ECC, Resync for the data field 93
G - Determination of Resync pattern 99
H - Read Channel for measuring NBSNR and jitter 104
J - Timing jitter measuring procedure 106
K - Definition of write pulse shape 108
L - Measurement of figure of merit 110
M - Implementation Independent Mark Quality Determination (IIMQD) for the interchange of recorded media 111
N - Requirements for interchange 113
P - Measurement implementation for Cross-track signal 115
Q - Office environment 116
R - Derivation of the operating climatic environment 117
S - Transportation 122
T - Sector retirement guidelines 123
U - Track deviation measurement 124
V - Values to be implemented in existing and future standards 128
W - Measurement of the vertical birefringence of the substrate 129
X - Guidelines for the use of Type WO and WO-DOW ODCs 131
Y - Laser power calibration for evaluation of media power sensitivity 132
viii
ISO/IEC ISO/IEC 14517:1996 (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. 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.
International Standard ISO/IEC 14517 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 23, Optical disk cartridges for information interchange.
Annexes A to P form an integral part of this International Standard. Annexes Q to Y are for information only.
ix
ISO/IEC
INTERNATIONAL STANDARD ISO/IEC 14517:1996 (E)
Information technology — 130 mm optical disk cartridges for information
interchange — Capacity: 2,6 Gbytes per cartridge
Section 1 - General
1 Scope
This International Standard defines a series of related 130 mm optical disk cartridges (ODCs) by using a number of Type
designations.
A disk has two sides, called Side A and Side B. Each side can have a nominal capacity of 1,3 Gbytes.
Type R/W provides for data to be written, read and erased many times over the recording surface of the corresponding
disk side, using thermo-magnetic and magneto-optical effects.
Type P-ROM provides for a part of the disk surface to be pre-recorded and reproduced by stamping or other means. This
part of the disk is read without recourse to the magneto-optical effect. All parts which are not pre-recorded
provide for data to meet the requirements of Type R/W.
Type O-ROM provides for the whole of the disk surface to be pre-recorded and reproduced by stamping or other means.
The corresponding disk sides are read without recourse to the magneto-optical effect.
Type DOW provides for data to be written and read many times over the recording surface of the corresponding disk
side, using the direct overwrite thermo-magnetic and magneto-optical effects requiring a single external
magnetic field.
Type P-DOW provides for a part of the disk surface to be pre-recorded and reproduced by stamping or other means. This
part of the disk is read without recourse to the magneto-optical effect. All parts which are not pre-recorded
provide for data to meet the requirements of Type DOW.
Type WO provides write once, read multiple functionality using the thermo-magnetic and magneto-optical effects.
Type WO-DOW
provides write once, read multiple functionality using the direct overwrite thermo-magnetic and magneto-
optical effects.
In addition, for each Type, this International Standard provides for cartridges with a sector size of 512 bytes and cartridges
with a sector size of 1 024 bytes. All sectors of a disk are the same size.
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 magneto-optical characteristics of the disk, enabling processing systems to writedata 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: A claim of conformance shall specify the Type of the ODC. It shall be in conformance
with this International Standard if it meets all mandatory requirements specified therein for that Type.
2.2 Generating system: A claim of conformance with this International Standard shall specify which of Types R/W,
DOW, P-ROM, P-DOW, O-ROM, WO and WO-DOW 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 Standard for the Type(s)
supported.
2.3 Receiving system: A claim of conformance with this International Standard shall specify which Type(s) is(are)
supported.
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 International 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.
3 Normative reference
The following standard contains provisions which, through reference in this text, constitute provisions of this International
Standard. At the time of publication, the edition indicated was valid. All 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
edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.
IEC 950:1991, Safety of information technology equipment, including electrical business equipment.
4 Definitions
For the purposes of this International Standard, the following definitions apply.
4.1 band: An annular area within the user zone on the disk having a constant clock frequency.
4.2 case: The housing for an optical disk, that protects the disk and facilitates disk interchange.
4.3 clamping zone: The annular part of the disk within which the clamping force is applied by the clamping device.
4.4 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.
4.5 Cyclic Redundancy Check (CRC): A method for detecting errors in data.
4.6 defect management: A method for handling the defective areas on the disk.
4.7 direct overwrite: a thermo-magnetic recording method using a specially designed media that does not require a
separate erase pass.
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 entrance surface: The surface of the disk on to which the optical beam first impinges.
4.10 Error Correction Code (ECC): An error-detecting code designed to correct certain kinds of errors in data.
4.11 format: The arrangement or layout of information on the disk.
4.12 hub: The central feature on the disk which interacts with the spindle of the disk drive to provide radial centring and
the clamping force.
The process of allocating the physical sequence of units of data so as to render the data more immune
4.13 interleaving:
to burst errors.
ISO/IEC ISO/IEC 14517:1996 (E)
4.14 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.
4.15 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.
4.16 logical track: Either 31 consecutive sectors for 512-byte sector disks or 17 consecutive sectors for disks with 1 024-
byte sector in one or more physical tracks. The first sector of each logical track is assigned sector number 0.
4.17 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.
4.18 mark edge: The transition between a region with a mark and one without a mark or vice versa, along the track.
4.19 mark edge recording: A recording method which uses a mark edge to represent a Channel bit.
4.20 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.
4.21 optical disk cartridge (ODC): A device consisting of a case containing an optical disk.
4.22 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.
4.23 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.
4.24 pre-recorded mark: A mark so formed as to be unalterable by magneto-optical means.
The read power is the optical power, incident at the entrance surface of the disk, used when reading.
4.25 read power:
NOTE - It is specified as a maximum power that may be used without damage to the written data. Lower power may be used providing that the
signal-to-noise ratio and other requirements of this International Standard are met.
4.26 recording layer: A layer of the disk on, or in, which data is written during manufacture and/or use.
4.27 Reed-Solomon code: An error detection and/or correction code which is particularly suited to the correction of
errors which occur in bursts or are strongly correlated.
4.28 space: The area between marks along the track.
4.29 spindle: The part of the disk drive which contacts the disk and/or hub.
4.30 substrate: A transparent layer of the disk, provided for mechanical support of the recording layer, through which
the optical beam accesses the recording layer.
4.31 track pitch: The distance between adjacent track centrelines, measured in a radial direction.
4.32 write-inhibit hole: A hole in the case which, when detected by the drive to be open, inhibits both write and erase
operations.
4.33 write-once functionality: A technique whereby a rewritable MO ODC is restricted to initialization and writing
once only; erase is not permitted.
4.34 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 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 1 024-
byte sectors and that the value yy . y applies to 512-byte sectors.
5.2 Names
The names of entities, e.g. specific tracks, fields, etc., are given with a capital initial.
6 List of acronyms
ALPC Auto Laser Power Control
AM Address Mark
CRC Cyclic Redundancy Code
DDS Disk Definition Structure
DMA Defect Management Area
DMP Defect Management Pointers
DOW Direct overwrite
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
NBSNR Narrow-Band Signal-to-Noise Ratio
ODC Optical Disk Cartridge
O-ROM Optical Read Only Memory
PA Postamble
PDL Primary Defect List
PEP Phase-Encoded Part of the Control Tracks
P-DOW Partial ROM direct overwrite
P-ROM Partial Read Only Memory
RLL(1,7) 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
ISO/IEC ISO/IEC 14517:1996 (E)
SDL Secondary Defect List
SFP Standard Formatted Part of the Control Tracks
SM Sector Mark
TIA Time Interval Analyzer
VFO Variable Frequency Oscillator
WO Write Once
WO-DOW Write once direct overwrite
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. Data may be
written over existing data by modulating the intensity of the optical beam. 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 or the entire disk may contain 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 h 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 Q).
The operating environment is the environment where the air immediately surrounding the optical disk cartridge has the
following properties:
temperature : 5 °C to 55 °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 Q.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 Q.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 R).
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 °C to 55 °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 Q.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 S.
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 Standard IEC 950, 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 950.
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
test to test. This clause gives an outline of all components; components critical for tests in specific clauses are specified in those
clauses.
9.1 Optical system
The basic set-up of the optical system of the Reference Drive used for measuring the write, read and erase parameters is shown
in figure 1. Different components and locations of components are permitted, provided that the performance remains the same
as that of the set-up in figure 1. The optical system shall be such that the detected light reflected from the entrance surface of
the disk is minimized so as not to influence the accuracy of the measurements.
ISO/IEC ISO/IEC 14517:1996 (E)
I
I
K
Ch.2
K
L
M J Ch.1
K
L
N
H
G
C D E F
B
A
95-0041-A
A Laser diode H Optional half-wave plate
B Collimator lens I , I Tracking signals from photodiode K
1 2 3
C Optional shaping prism J Polarizing beam splitter
Ch.1 Channel 1 K , K Photodiodes for Channels 1 and 2
1 2
Ch.2 Channel 2 K Split photodiode
D Beam splitter L , L d.c.-coupled amplifiers
1 2
E Polarizing beam splitter M Tracking Channel (see 20.3)
F Objective lens N Phase retarder
G Optical disk
Figure 1 - Optical system of the Reference Drive
In the absence of polarization changes in the disk, the polarizing beam splitter J shall be aligned to make the signal of detector
K equal to that of detector K . The direction of polarization in this case is called the neutral direction. The phase retarder N
1 2
shall be adjusted such that the optical system does not have more than 2,5° phase retardation between the neutral polarization
and the polarization perpendicular to it. This position of the retarder is called the neutral position.
The phase retarder can be used for the measurement of the narrow-band signal-to-noise ratio (see 27.2).
The beam splitter J shall have a p-s intensity reflectance ratio of at least 100.
The beam splitter E shall have an intensity reflectance R from F to H of nominally 0,30 for the neutral polarization direction.
p
The reflectance R for the polarization perpendicular to the neutral direction shall be nominally 0,95. The actual value of R
s s
shall not be smaller than 0,90.
The imbalance of the magneto-optical signal is specified for a beam splitter with nominal reflectance. If the measurement is
made on a drive with reflectance's R ' and R ' for beam splitter E, then the measured imbalance shall be multiplied by
p s
RR
′
sp
RR
′
ps
to make it correspond to the nominal beam splitter E.
The output of Channel 1 is the sum of the currents through photodiodes K and K , and is used for reading embossed marks.
1 2
The output of Channel 2 is the difference between photo-diode currents, and is used for reading user-written marks with the
magneto-optical effect.
9.2 Optical beam
The focused optical beam used for writing, reading and erasing data shall have the following properties:
+10 nm
a) Wavelength (λ)
685 nm
-10 nm
b) Wavelength (λ) divided by the
numerical aperture of the objective
λ/NA = 1,245 μm ± 0,018 μm
lens (NA)
c) Filling D/W of the aperture of the 0,85 ± 0,05
objective lens
d) Variance of the wavefront of the 0 to λ / 330
optical beam near the recording layer
after passing through an ideal substrate
e) Polarization Linear - parallel or perpendicular to the groove
where appropriate
f) Extinction ratio 0,01 max.
g) The optical power and pulse width for writing, reading and erasing are specified in later clauses of this standard.
D is the diameter of the lens aperture and W is the beam diameter of the Gaussian beam where the intensity is 1/e of the
maximum intensity.
The extinction ratio is the ratio of the minimum over the maximum power observed behind a linear polarizer in the optical
beam, which is rotated over at least 180°.
9.3 Read channels
Two read channels shall be provided to generate signals from the marks in the recording layer. Channel 1 shall be used for
reading the embossed marks, using the diffraction of the optical beam by the marks. Channel 2 shall be used for reading the
written marks, using the rotation of the polarization of optical beam due to the magneto-optical effect of the marks. The read
amplifiers after the photo-detectors in Channel 1 and Channel 2 shall have a flat response within 1 dB from d.c. to 28 MHz.
Unless otherwise stated, the signal of Channel 1 is not equalized before detection. The signal from Channel 2 is not equalized
before detection. The signals from both Channels shall be low-pass filtered with a 3-pole Butterworth filter with a cut-off
frequency of one half the Channel clock frequency.
9.4 Tracking
The Tracking Channel of the drive provides the tracking error signals to control the servos for the axial and radial tracking of
the optical beam. The method of generating the axial tracking error is not specified for the Reference Drive. The radial
tracking error is generated by a split photodiode detector in the tracking Channel. The division of the diode runs parallel to the
image of the tracks on the diode.
The requirements for the accuracy with which the focus of the optical beam must follow the tracks is specified in 20.2.4.
9.5 Rotation of the disk
The spindle shall position the disk as specified in 12.4. It shall rotate the disk at 50,0 Hz ± 0,5 Hz. The direction of rotation of
the disk side being tested shall be counter-clockwise when viewed from the objective lens.
ISO/IEC ISO/IEC 14517:1996 (E)
Section 2 - Mechanical and physical characteristics
10 Dimensional and physical characteristics of the case
10.1 General description of the case
The case (see figure 3) is a rigid protective container of rectangular shape. It has spindle windows on both sides to allow the
spindle of the drive to clamp the disk by its hub. Both sides of the case have a head window, one for the optical head of the
drive, the other for the magnetic head providing the necessary magnetic fields. A shutter uncovers the windows upon insertion
into the drive, and automatically covers them upon removal from the drive. The case has write-inhibit, reflectance detection,
and rotation direction detection features, and gripper slots for an autochanger.
10.2 Relationship of Sides A and B
The features essential for physical interchangeability are represented in figure 3. When Side A of the cartridge faces upwards,
Side A of the disk faces downwards. Sides A and B of the case are identical as far as the features given here are concerned,
except as noted below. The description is given for one side only. References to Sides A and B can be changed to B or A
respectively.
Only the shutter and the slot for the shutter opener, described in 10.5.10 and 10.5.11, are not identical for both sides of the
case.
10.3 Reference axes and case reference planes
There is a reference plane P for each side of the case. Each reference plane P contains two orthogonal axes X and Y to which
the dimensions of the case are referred. The intersection of the X and Y axes defines the centre of the location hole. The X axis
extends through the centre of the alignment hole.
10.4 Case drawings
The case is represented schematically by the following drawings.
– Figure 2 shows the hub dimensions.
– Figure 3 shows a composite drawing of Side A of the case in isometric form, with the major features identified from Side
A.
– Figure 4 shows the envelope of the case with respect to a location hole at the intersection of the X and Y axes and reference
plane P.
– Figure 5 shows the surfaces S1, S2, S3 and S4 which establish the reference plane P.
– Figure 5a shows the details of surface S3.
– Figure 6 shows the details of the insertion slot and detent.
– Figure 7 shows the gripper slots, used for automatic handling.
– Figure 8 shows the write-inhibit holes.
– Figure 9 shows the media ID sensor holes.
– Figure 10 shows the shutter sensor notch.
– Figure 11 shows the head and motor window.
– Figure 12 shows the shutter opening features.
– Figure 13 shows the capture cylinder.
– Figure 14 shows the user label areas.
10.5 Dimensions of the case
The dimensions of the case shall be measured in the test environment. The dimensions of the case in an operating environment
can be estimated from the dimensions specified in this clause.
10.5.1 Overall dimensions
The total length of the case (see figure 4) shall be
L = 153,0 mm ± 0,4 mm
The distance from the top of the case to the reference axis X shall be
L = 127,0 mm ± 0,3 mm
The distance from the bottom of the case to the reference axis X shall be
L = 26,0 mm ± 0,3 mm
The total width of the case shall be
+ 0,0 mm
L = 135,0 mm
- 0,6 mm
The distance from the left-hand side of the cartridge to the reference axis Y shall be
+ 0,0 mm
L = 128,5 mm
- 0,5 mm
The distance from the right-hand side of the cartridge to the reference axis Y shall be
L = 6,5 mm ± 0,2 mm
The width shall be reduced on the top by the radius
R = L
1 4
originating from a point defined by L and
L = 101,0 mm ± 0,3 mm
The two corners of the top shall be rounded with a radius
R = 1,5 mm ± 0,5 mm
and the two corners at the bottom with a radius
R = 3,0 mm ± 1,0 mm
The thickness of the case shall be
L = 11,00 mm ± 0,30 mm
The eight long edges of the case shall be rounded with a radius
R = 1,0 mm max.
10.5.2 Location hole
The centre of the location hole (see figure 4) shall coincide with the intersection of the reference axes X and Y. It shall have a
square form with a side length of
+ 0,00 mm
L = 4,10 mm
- 0,06 mm
held to a depth of
L = 1,5 mm (i.e. typical wall thickness)
after which a cavity extends through to the alignment hole on the opposite side of the case.
The lead-in edges shall be rounded with a radius
R = 0,5 mm max.
10.5.3 Alignment hole
The centre of the alignment hole (see figure 4) shall lie on reference axis X at a distance of
L = 122,0 mm ± 0,2 mm
from the reference axis Y.
ISO/IEC ISO/IEC 14517:1996 (E)
The dimensions of the hole shall be
+ 0,00 mm
L = 4,10 mm
- 0,06 mm
and
+ 0,2 mm
L = 5,0 mm
- 0,0 mm
held to a depth of L , after which a cavity extends through to the location hole on the opposite side of the case.
The lead-in edges shall be rounded with radius R .
10.5.4 Surfaces on Reference Planes P
The reference plane P (see figures 5 and 5a) for a side of the case shall contain four surfaces (S1, S2, S3 and S4) on that side
of the case, specified as follows:
Two circular surfaces S1 and S2.
–
Surface S shall be a circular area centred around the square location hole and have a diameter of
D = 9,0 mm min.
Surface S2 shall be a circular area centred around the rectangular alignment hole and have a diameter of
D = 9,0 mm min.
– Two elongated surfaces S3 and S4, that follow the contour of the cartridge and shutter edges.
Surfaces S3 and S4 are shaped symmetrically.
Surface S3 shall be defined by two circular sections with radii
R = 1,5 mm ± 0,1 mm
with an origin given by
L = 4,0 mm ± 0,1 mm
L = 86,0 mm ± 0,3 mm,
and
R = 1,5 mm ± 0,1 mm
with an origin given by
L = 1,9 mm ± 0,1 mm
L = 124,5 mm ± 0,3 mm
The arc with radius R shall continue on the right hand side with radius
+ 0,2 mm
R = 134,0 mm
- 0,7 mm
which is a dimension resulting from L + L + R with an origin given by L and L . A straight, vertical line shall smoothly
5 14 6 5 7
join the arc of R to the arc of R .
6 8
The left-hand side of S3 shall be bounded by radius
R = 4,5 mm ± 0,3 mm
which is a dimension resulting from L + L - R with an origin given by
18 14 6
L = 2,0 mm ± 0,1 mm
L = 115,5 mm ± 0,3 mm.
The left-hand side of the boundary shall be closed by two straight lines. The first one shall smoothly join the arc of R to the
arc of R . The second one shall run from the left hand tangent of R to its intersection with R . Along the left hand side of
9 7 9
surface S3 there shall be a zone to protect S3 from being damaged by the shutter. In order to keep this zone at a minimum
practical width
R = 4,1 mm max.
This radius originates from the same point as R .
10.5.5 Insertion slots and detent features
The case shall have two symmetrical insertion slots with embedded detent features (see figure 6). The slots shall have a length
of
L = 26,0 mm ± 0,3 mm
a width of
+ 0,3 mm
L = 6,0 mm
- 0,0 mm
and a depth of
L = 3,0 mm ± 0,1 mm
located
L = 2,5 mm ± 0,2 mm
from reference plane P.
The slots shall have a lead-in chamfer given by
= 0,5 mm max.
L24
L = 5,0 mm max.
The detent notch shall be a semi-circle of radius
R = 3,0 mm ± 0,2 mm
with the origin given by
L = 13,0 mm ± 0,3 mm
L = 2,0 mm ± 0,1 mm
L = 114,0 mm ± 0,3 mm
The dimensions L , L , L are interrelated, their values shall be such so that they are all three within specification.
2 26 73
10.5.6 Gripper slots
The case shall have two symmetrical gripper slots (see figure 7) with a depth of
L = 5,0 mm ± 0,3 mm
from the edge of the case and a width of
L = 6,0 mm ± 0,3 mm
The upper edge of a slot shall be
L = 12,0 mm ± 0,3 mm
above the bottom of the case.
ISO/IEC ISO/IEC 14517:1996 (E)
10.5.7 Write-inhibit holes
Sides A and B shall each have a write-inhibit hole (see figure 8). The case shall include a device for opening and closing each
hole. The hole at the left-hand side of Side A of the case, is the write-inhibit hole for Side A of the disk. The protected side of
the disk shall be made clear by inscriptions on the case or by the fact that the device for Side A of the disk can only be
operated from Side A of the case.
When writing and erasing on Side A of the disk is not allowed, the write-inhibit hole shall be open all through the case. It shall
have a diameter
D = 4,0 mm min.
Its centre shall be specified by
L = 8,0 mm ± 0,2 mm
L = 111,0 mm ± 0,3 mm
on Side A of the case.
When writing is allowed on Side A of the disk, the write-inhibit hole shall be closed on Side A of the case, at a depth of
typically L , i.e. the wall thickness of the case. In this state, the opposite side of the same hole, at Side B of the case, shall be
closed and not recessed from the reference plane P of Side B of the case by more than
L = 0,5 mm
The opposite side of the write-inhibit hole for protecting Side B of the disk shall have a diameter D . Its centre shall be
specified by L and
L = 11,0 mm ± 0,2 mm
on Side A of the case.
10.5.8 Media sensor holes
There shall be two sets of four media sensor holes (see figure 9). The set of holes at the lower left hand corner of Side A of the
case pertains to Side A of the disk. The holes shall extend through the case, and have a diameter of
+ 0,3 mm
D = 4,0 mm
- 0,0 mm
the positions of their centres shall be specified by L , L and
32 34
L = 19,5 mm ± 0,2 mm
L = 17,0 mm ± 0,2 mm
L = 23,0 mm ± 0,2 mm
L = 29,0 mm ± 0,2 mm
L = 93,0 mm ± 0,3 mm
L = 99,0 mm ± 0,3 mm
L = 105,0 mm ± 0,3 mm
A hole is deemed to be open when there is no obstruction in this hole over a diameter D all through the case.
A hole for Side A of the disk is deemed to be closed, when the hole is closed on both Side A and Side B of the case. The
closure shall be recessed
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...