Overview - ISO/IEC 10089:1991 (130 mm rewritable optical disk cartridge)
ISO/IEC 10089:1991 defines the physical, mechanical and recording characteristics of the 130 mm rewritable optical disk cartridge (ODC) intended for reliable data interchange. The standard covers magneto-optical media that can be written, read and erased many times using the magneto‑optical Kerr effect. It specifies environments for testing, operating and storage, dimensional and material requirements for the cartridge case and disk, magneto‑optical recording/read/erase parameters, and two interchangeable physical formats for tracks and sectors.
Key topics and technical requirements
- Conformance: A cartridge conforms if it meets mandatory requirements in clauses 8–16 and either clause 17 or 18 (the two format options).
- Environments:
- Testing: 23 °C ±2 °C, RH 45–55%, pressure 75–105 kPa; 48 h conditioning prior to measurements.
- Operating: 10–50 °C, RH 10–80%, wet-bulb ≤29 °C, magnetic field limit during load/unload (48 000 A/m), 2 h acclimatization after out-of-range storage.
- Mechanical & dimensional characteristics: Detailed drawings and tolerances for the case, hub, clamping zone, shutter, label areas, write‑inhibit holes and other interfaces to ensure physical interchangeability with drives.
- Disk physical properties: Outer diameter, substrate thickness, hub dimensions, moment of inertia, axial/radial runout limits, tilt and imbalance limits; drop and shock testing procedures.
- Magneto‑optical recording: Read power, baseline reflectance, Kerr rotation, recording layer characteristics, read/write/erase pulse definitions and test methods.
- Logical and physical formats:
- Two format options (Format A and Format B) define track geometry, sector format, error detection/correction and modulation methods.
- Error control: Reed–Solomon ECC, CRCs, interleaving, sector markers (SM), address marks (AM), and auto laser power control (ALPC).
- Defect management: Media initialization, primary/secondary defect lists (PDL/SDL), defect mapping and retirement guidance for sector-level defect handling.
- Annexes: Measurement systems, CRCs, interleave/ECC examples and guidance for interchange.
Applications and who uses this standard
- Media manufacturers: design and certify 130 mm rewritable magneto‑optical cartridges for interchange.
- Drive and system designers: implement mechanical interfaces, clamping, optical access, and firmware for formats A/B, ECC and defect management.
- Quality assurance & test laboratories: perform standardized environmental, mechanical and optical tests for compliance.
- Archivists, data centers and integrators: ensure long-term interchangeability and media handling procedures.
- Standards bodies and compliance teams: reference for interoperability between media and drives.
Related standards
- ISO/IEC 9171-1 (definitions and related optical-disk terms)
- IEC 950 (safety requirements for information technology equipment)
- Referenced Reed–Solomon, CRC and modulation specifications as cited in ISO/IEC 10089 annexes
Keywords: ISO/IEC 10089:1991, 130 mm rewritable optical disk cartridge, magneto‑optical, ODC, data interchange, Reed‑Solomon, ECC, defect management, optical disk standards.