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Text File  |  1992-06-27  |  4KB  |  84 lines
  1.  
  2.              ************************************************************
  3.                          Miniscribe Disk Drive Specifications
  4.                                         For
  5.                                     Model: 8051A
  6.              ************************************************************
  7.  
  8.              FORM FACTOR                            3.5 inch HH
  9.              INTERFACE                               16 BIT IDE
  10.              DATA ENCODING METHOD                       2,7 RLL
  11.              DATA TRANSFER RATE (Mbit/Sec)                  8.0
  12.  
  13.              DISK DRIVE CHARACTERISTICS
  14.                 HEADS                                         4
  15.                 CYLINDERS                                   745
  16.                 SECTORS/TRACK (512 Byte Sectors)             28
  17.                 WRITE PRECOMPENSATION CYLINDER            NA***
  18.                 REDUCED WRITE CURRENT CYLINDER            NA***
  19.                 MINIMUM STEP PULSE RATE                   NA***
  20.                 UNFORMATTED BYTES/TRACK                  17,220
  21.                 RADIAL TRACK DENSITY (TPI)                1,109
  22.                 ROTATIONAL SPEED (RPM)                    3,484
  23.                 UNFORMATTED CAPACITY (MBytes)              51.3
  24.                 FORMATTED CAPACITY (Millions of Bytes)     42.7
  25.                 FORMATTED CAP. (MB = 1,048,576 Bytes)      40.7
  26.                 NA*** (NOT APPLICABLE TO IDE DRIVES)
  27.  
  28.              ACCESS TIMES (mSec)*
  29.                 SINGLE TRACK                                  8
  30.                 AVERAGE OF ALL POSSIBLE SEEKS                28
  31.                 MAXIMUM                                      60
  32.              *(INCLUDES SETTLING)
  33.  
  34.              POWER REQUIREMENTS
  35.                 DISSIPATION (Watts)
  36.                    TYPICAL                                  8.0
  37.                 CURRENT (Amps)
  38.                    +5 V DC (+ or - 5%)                      0.5
  39.                    +12 V DC (+ or - 5%)                     0.5
  40.                    MAXIMUM STARTUP CURRENT                  2.0
  41.  
  42.              PHYSICAL DIMENSIONS
  43.                 HEIGHT (in)                               1.625
  44.                 WIDTH (in)                                    4
  45.                 DEPTH (in)                                 5.75
  46.                 WEIGHT (lbs)                               1.43
  47.  
  48.              OPERATIVE ENVIRONMENTAL LIMITS
  49.                 MINIMUM TEMPERATURE (Centigrade)              5
  50.                 MAXIMUM TEMPERATURE (Centigrade)             50
  51.                 THERMAL GRADIENT (Degrees C/Hour)            10
  52.  
  53.              RELIABILITY
  54.                 MTBF (Hours)                             30,000
  55.                 MTTR (Minutes)                               30
  56.                 COMPONENT DESIGN LIFE (Years)                 5
  57.  
  58.  
  59.                          8051A DUAL DRIVE SUPPORT
  60.  
  61.  
  62. The 8051A operates in a MASTER SLAVE relationship. This enables the 8051A to 
  63. be daisy-chained with another IDE drive (i.e. 7080A, 7040A, or another 8051A).
  64.  
  65. 1: Jumpering J4.1 to J4.2 causes the 8051A to operate in the SLAVE role.
  66.  
  67. 2: Jumpering J4.5 to J4.6 causes the 8051A to operate in the MASTER role.
  68.  
  69. 3: Jumpering J4.3 to J4.4 This allows the 8051A to be compatable with 
  70.    some BIOS versions that cannot support 1:1 interleave. This jumper 
  71.    should not be installed under normal conditions.
  72.  
  73. 4: Jumper J4.7 to J4.8 is not used and should not be installed.
  74.  
  75. 5: Jumpering J4.9 to J4.10 enables the I/O ready signal onto the 
  76.    interface connector, pin 27.     
  77.  
  78. To operate the 8051A as the ONLY DRIVE in a system, J4.1 thru J4.10 
  79. should all be open (not jumpered) except as noted below.
  80.  
  81. NOTE: The 8051A may be shipped with a jumper accross J4.1 and J4.3 
  82. this jumper has no effect but provides you with a spare. 
  83.  
  84.