ANSI INCITS 163 : 1988 : R2017

1 Scope
2 Referenced Standard
3 General Requirements
   3.1 Operation and Storage Environment
   3.2 Test Conditions
   3.3 Material
   3.4 Coefficient of Thermal Expansion
4 Dimensions
   4.1 General
   4.2 Inner Diameter
   4.3 Outer Diameter
   4.4 Concentricity
   4.5 Thickness
   4.6 Edge Condition
   4.7 Location of Flyable Magnetic Surfaces
5 Physical Characteristics
   5.1 Moment of Inertia
   5.2 Maximum Speed
   5.3 Runout
   5.4 Surface Roughness
   5.5 Durability of Magnetic Surfaces
   5.6 Protection of Magnetic Surfaces
   5.7 Head/Disk Friction
   5.8 Head/Disk Stiction
   5.9 Head/Disk Impact
   5.10 Cleaning of the Magnetic Surfaces
6 Testing of Magnetic Characteristics
   6.1 Test Conditions
   6.2 Track and Recording Information
   6.3 Standard Reference Surface
   6.4 Test Head
   6.5 Conditions for Test Head Measurements
   6.6 Read Channel
   6.7 Automatic Gain Controlled Amplifier
   6.8 Track Average Amplitude (V[TA])
   6.9 Test Signals
   6.10 DC Erasure
7 Surface Tests
   7.1 Amplitude Tests
   7.2 Resolution Test
   7.3 Overwrite Test
   7.4 Residual Noise Test
8 Track Quality Test
   8.1 Positive Modulation Test
   8.2 Negative Modulation Test
   8.3 Missing Pulse Test
   8.4 Extra Pulse Test
9 Acceptance Criteria for Magnetic Surfaces
   9.1 Surface Test Criteria
   9.2 Track Quality (Modulation) Criteria
10 Defects of the Magnetic Surfaces
   10.1 Single Defect
   10.2 Defect Criteria
Appendixes
Appendix A Class 100 Air Cleanliness
   A1. Definition.
   A2. Test Method
   A3. Related Publications
Figure A1 Relationship of Particle Size to Amount of Particles
Appendix B Recommended Procedure for Measuring Frictional
            Coefficient between Head and Disk
Figures
Figure B1 Friction Test Setup
Figure B2 Experimental Result with Unlubricated Disk
Figure B3 Experimental Result with Properly Lubricated Disk
Figure B4 Experimental Result with Over or Uneven
            Lubrication of Disk
Figure B5 Experimental Result with Stiction on Disk
Appendix C Recommended Procedure for Measuring Head/Disk
            Impact Durability
Figures
Figure C1 Test Fixture
Figure C2 Conceptual Schematic of Impact Test Method
Figure C3 Illustration of a Typical Acceleration
            of Amplitude Measurement

Contains the mechanical, physical, and magnetic properties of a low-friction disk with a diameter of 130 mm (5.118 inches) and with a typical recording density of 38 tracks per millimeter (tpmm) (960 tracks per inch (tpi)) and 402 flux transitions per millimeter (ftpmm) (10 200 flux transitions per inch (ftpi)) at a radius of 33.02 mm (1.300 inches).