• BS 5595-2:1981

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

    Interchangeable magnetic twelve-disk pack for information processing Specification for 200 Mbytes magnetic twelve-disk pack

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  15-08-1999

    Language(s):  English

    Published date:  31-07-1981

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    National foreword
    Cooperating organizations
    Specification
    1 Scope and field of application
    2 References
    Section one. General description
    3 General description
    Section two. Mechanical and physical characteristics
    4 General requirements
    5 Dimensional characteristics
    6 Physical characteristics
    Section three. Magnetic characteristics
    7 Track and recording information - Data surfaces
    8 Test conditions and equipment - Data surfaces
    9 Functional testing - Data surfaces
    10 Acceptance criteria for data surfaces
    11 Servo surface
    Section four. Pre-initialization
    12 Data track pre-initialization
    Annexes
    A Air cleanliness class 100
    B Measurement of track width
    C ECC implementation
    D General track format
    Tables
    1 Significance of two bit combinations in position B2,
        B1
    2 Untitled
    Figures
    1 Track layout of an initialized data track
    2 Structure of home address
    3 Count of record 0
    4 Data block of record 0
    5 Untitled
    6 Disk pack, exploded view
    7 Part sectional view of disk pack with covers
    8 Top cover/pack centreline relationship
    9 Partial cross-section of disk pack
    10 Part detail of spindle lock
    11 Disk edge chamfer
    12 Location of heads and surfaces
    13 Write current waveform
    14 AGC-amplifier characteristics
    15 Track average amplitude
    16 Modulation tests
    17 Minus-even and plus-odd tracks
    18 Servo track geometry
    19 Servo head signal at servo tracking centreline
    20 Servo head positioning
    21 Relationship between tracks on servo and data
        surfaces
    22 Index pattern
    23 Timing, amplitude and noise constraints for servo
        signal
    24 Noise constraints for index pattern
    25 Particle size distribution curve of air cleanliness
        class 100
    26 Track width diagram
    27 Feedback connections of a 56-position shift register
    28 }
    29 }
    30 }
    31 } Untitled
    32 }
    33 }
    34 }

    Abstract - (Show below) - (Hide below)

    General, physical and magnetic characteristics and pre-initialization for the physical interchange of 200 Mbytes magnetic twelve-disk packs for use in electronic data processing systems.

    General Product Information - (Show below) - (Hide below)

    Committee ICT/1
    Document Type Standard
    Publisher British Standards Institution
    Status Withdrawn

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS 4730:1985 Specification for UK 7-bit coded character set
    BS 4783-1:1988 Storage, transportation and maintenance of media for use in data processing and information storage Recommendations for disk packs, storage modules and disk cartridges

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO/IEC 2022:1994 Information technology Character code structure and extension techniques
    BS 891-1:1962 Method for Rockwell hardness test Testing of metals
    ISO 5864:1993 ISO inch screw threads Allowances and tolerances
    ISO 1302:2002 Geometrical Product Specifications (GPS) Indication of surface texture in technical product documentation
    ISO/IEC 646:1991 Information technology ISO 7-bit coded character set for information interchange
    BS 308-2:1972 Engineering drawing practice. Dimensioning and tolerancing of size
    ISO/R 80:1968 Rockwell hardness test (B and C scales) for steel
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