INCITS/ISO/IEC 9171-1 : 1990

1 Scope
2 Conformance
3 Normative references
4 Definitions
   4.1 case
   4.2 Clamping Zone
   4.3 Control Track
   4.4 cyclic redundancy check (CRC)
   4.5 defect management
   4.6 disk reference plane
   4.7 entrance surface
   4.8 error correction code (ECC)
   4.9 format
   4.10 groove
   4.11 hub
   4.12 interleaving
   4.13 land and groove
   4.14 mark
   4.15 optical disk
   4.16 optical disk cartridge (ODC)
   4.17 recording layer
   4.18 Reed-Solomon code
   4.19 spindle
   4.20 substrate
   4.21 track
   4.22 track pitch
5 General description
6 Environments
   6.1 Testing environment
   6.2 Operating environment
   6.3 Storage environments
        6.3.1 Short-term storage
        6.3.2 Long-term storage
7 Safety requirements
8 Dimensional and mechanical characteristics of the case
   8.1 General
   8.2 Case drawings
   8.3 Sides, reference axes and reference planes
   8.4 Materials
   8.5 Mass
   8.6 Overall dimensions (figure 3)
   8.7 Location hole (figure 3)
   8.8 Alignment hole (figure 3)
   8.9 Surfaces for reference planes P (figures 4 and 4a)
   8.10 Insertion slots and detent features (figure 5)
   8.11 Gripper slots (figure 6)
   8.12 Write-inhibit holes (figure 7)
   8.13 Media sensor holes (figure 8)
   8.14 Head and motor window (figure 10)
   8.15 Shutter (figure 11)
   8.16 Slot for shutter opener (figure 11)
   8.17 Shutter sensor notch (figure 9)
   8.18 User label areas (figure 13)
9 Dimensional and Physical Characteristics of the Disk
   9.1 Dimensions of the disk
        9.1.1 Outer diameter
        9.1.2 Thickness
        9.1.3 Clamping zone (figure 1)
        9.1.4 Clearance zone
   9.2 Mass
   9.3 Moment of inertia
   9.4 Imbalance
   9.5 Axial deflection
   9.6 Axial acceleration
   9.7 Dynamic radial runout
   9.8 Radial acceleration
   9.9 Tilt
10 Drop test
11 Interface between disk and drive
   11.1 Clamping technique
   11.2 Dimensions of the hub (figure 1)
        11.2.1 Outer diameter of the hub
        11.2.2 Height of the hub
        11.2.3 Diameter of the centre hole
        11.2.4 Height of the top of the centre hole
                at diameter D[9]
        11.2.5 Centering length at diameter D[9]
        11.2.6 Chamfer at inner diameter D[9]
        11.2.7 Chamfer at outer diameter D[8]
        11.2.8 Outer diameter of the magnetizable ring
        11.2.9 Inner diameter of the magnetizable ring
        11.2.10 Thickness of the magnetizable material
        11.2.11 Position of the top of the magnetizable
                ring relative to the disk reference plane
   11.3 Magnetizable material
   11.4 Clamping force
   11.5 Capture cylinder for the hub (figure 12)
   11.6 Disk position in the operating condition (figure 12)
12 Characteristics of the substrate
   12.1 Index of refraction
   12.2 Thickness
   12.3 Birefringence
13 Characteristics of the recording layer
   13.1 Test conditions
        13.1.1 General
        13.1.2 Read conditions
        13.1.3 Write conditions
   13.2 Baseline reflectance
        13.2.1 General
        13.2.2 Actual value
        13.2.3 Requirement
   13.3 Definitions of signals
   13.4 Prerecorded marks
   13.5 User written data
        13.5.1 Signal I[L]
        13.5.2 Signal I[H]
        13.5.3 Narrow-band signal-to-noise ratio (figure 15)
        13.5.4 Cross-talk
Annex A - Office environment
Annex B - Transportation
Annex C - Measurement of birefringence
Annex D - Definition of write and erase pulse width