TITLE
    AppleCD SC: Specifications (Discontinued)
Article ID:
Created:
Modified: 		2596
3/1/88
9/13/93
TOPIC


DISCUSSION

    Physical Dimensions
    -------------------
    STARTDISCUSSdepth 266 mm (10.47 inches)
    width 246 mm (9.69 inches)
    height 84 mm (3.31 inches)
    weight 4.0 kg (8.8 lbs)

    (the drive mechanism alone is 146 x 212 x 62mm)

    Disc Specifications
    -------------------
    recording surfaces 1
    disc diameter 120 mm
    disc center hole 15 mm
    thickness 1.2 mm
    track pitch 1.6 microns (15,875 tracks per inch)
    scanning velocity 1.2 - 1.4 meters per second
    rotation speed Varies over radius, approximately 530 to 230 rpm
    latency (average) approximately 55 to 130 milliseconds
    blocks per rotation 8.4 to 19.5 variable

    Data Specifications
    -------------------
    Data capacity 550 MB, mode 1
    630 MB, mode 2
    number of blocks/disc 270,000
    data per block 2048 bytes, mode 1
    2336 bytes, mode 2
    address description minutes, seconds, frames

    playing time 1 hour

    Data Streaming Rates
    --------------------
    blocks per second 75 blocks per second
    user bytes per second 153.6K, mode 1
    175.2K, mode 2
    SCSI bus transfer rate 800K per second

    Access Time
    Average Less than 600 milliseconds (500ms, typical)
    Maximum (First to
    last block) Less than 1.2 seconds (800ms, typical)

    Modes Supported
    ---------------
    CD-ROM modes 1 and 2
    CD-Audio

    Environmental
    -------------
    Noise (maximum)
    Drive on (seek or non-seek) <46 dB(A)

    Temperature

    Operating Temperature +10 degrees C to +40 degrees C
    Storage (6 months) -30 degrees C to +50 degrees C
    Transit (72 hours) -30 degrees C to +55 degrees C

    Humidity Classified as Class 1 equipment

    Power Requirements
    ------------------
    AC Input (US and Canada) 120V AC +/- 10%, 58 to 62 Hz
    AC Input (Universal) 100/120/200/220/240V AC +/- 10%, 48 to 62 Hz
    The drive cannot be powered directly by a 12V power supply.

    Power Consumption
    Drive on 40 watts

    Interface
    ---------
    SCSI expansion ports 50-pin connector

    (NOTE: The AppleCD SC does not perform oversampling of the audio section.)



Document Information
Product Area: Peripherals
Category: CD-ROM
Sub Category: AppleCD SC

Copyright © 2000 Apple Computer, Inc. All rights reserved.