ECMA 154 : 2ED 94

Section 1 - General
1 Scope
2 Conformance
3 Reference
4 Definitions
   4.1 Case
   4.2 Cyclic Redundancy Check (CRC)
   4.3 Embossed mark
   4.4 Entrance surface
   4.5 Error Correction Code (ECC)
   4.6 Field
   4.7 Format
   4.8 Groove
   4.9 Interleaving
   4.10 Kerr rotation
   4.11 Land and groove
   4.12 Mark
   4.13 Optical disk
   4.14 Optical disk cartridge (ODC)
   4.15 Polarization
   4.16 Recording layer
   4.17 Reed-Solomon code
   4.18 Rewritable optical disk
   4.19 Sector
   4.20 Substrate
   4.21 Track
   4.22 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 Environment
   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 Reference planes of the case
   10.3 Dimensions of the case
   10.4 Mechanical characteristics
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
   11.4 Mechanical characteristics
   11.5 Optical characteristics
12 Interface between cartridge and drive
   12.1 Clamping method
   12.2 Clamping force
   12.3 Capture cylinder
   12.4 Disk position in operating condition
Section 3 - Format of information
13 Track geometry
   13.1 Track shape
   13.2 Direction of rotation
   13.3 Track pitch
   13.4 Track number
14 Track format
   14.1 Track layout
   14.2 Radial alignment
   14.3 Sector number
15 Sector format
   15.1 Sector layout
   15.2 Sector mark
   15.3 VFO fields
   15.4 Address Mark (AM)
   15.5 ID fields
   15.6 Postambles (PA)
   15.7 Offset Detection Field (ODF)
   15.8 Gap
   15.9 Sync
   15.10 Data field
   15.11 Buffer field
16 Recording code
17 Format of the Information Zone
   17.1 General description of the Information Zone
   17.2 Division of the Information Zone
18 Format of the Data Zone
   18.1 Defect Management Area (DMAs)
   18.2 Disk Definition Sector (DDS)
   18.3 Rewritable Zone
   18.4 Embossed Zone
19 Defect management in the Rewritable Zone
   19.1 Initialization of the disk
   19.2 Certification
   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
   20.3 Definition of signals
21 Signals from grooves
   21.1 Cross-track signal
   21.2 Cross-track minimum signal
   21.3 Push-pull signal
   21.4 Divided push-pull signal
   21.5 On-track signal
   21.6 Phase depth
   21.7 Track location
22 Signals from Headers
   22.1 Sector
   22.2 VFO[1] and VFO[2]
   22.3 Address Mark, ID field and postamble
23 Signals from embossed Recording fields
Section 5 - Characteristics of the recording layer
24 Method of testing
   24.1 Environment
   24.2 Reference Drive
   24.3 Write conditions
   24.4 Erase conditions
   24.5 Definition of signals
25 Magneto-optical characteristics
   25.1 Figure of merit
   25.2 Imbalance of the magneto-optical signal
26 Write characteristics
   26.1 Resolution
   26.2 Narrow-band signal-to-noise ratio
   26.3 Cross-talk
27 Erase characteristics
Section 6 - Characteristics of user data
28 Method of testing
   28.1 Environment
   28.2 Reference Drive
29 Minimum quality of a sector
   29.1 Headers
   29.2 User-written data
   29.3 Embossed data
30 Data interchange requirements
   30.1 Tracking
   30.2 User-written data
   30.3 Embossed data
   30.4 Quality of disk
Annex A - Edge distortion test
Annex B - Compliance test
Annex C - Track deviation measurement
Annex D - CRC for ID fields
Annex E - Format of the Data field of a sector
Annex F - Contents of the Control Zones
Annex G - Guidelines for sector replacement
Annex H - Measurement of the figure of merit
Annex J - Read power, write power and erase power
Annex K - Test method for measuring the adsorbent force of
          the hub
Annex L - Deviation of the operating climatic environment
Annex M - Air cleanliness class 100 000
Annex N - Position of the cartridge relative to the reference
          planes
Annex P - Transportation
Annex Q - Office environment
Annex R - Relaxation by zones of the requirements for signals

Describes the conditions for conformance testing and the Reference Drive; the mechanical and physical characteristics of the cartridge; the format of the information on the disk, both embossed and user-written; the characteristics of the embossed information on the disk; the magneto-optical characteristics of the disk; the minimum quality of user-written data on the disk, enabling data processing systems to read data from the disk.