************************************************************
                         Miniscribe Disk Drive Specifications
                                        For
                                    Model: 3180E
             ************************************************************

             FORM FACTOR                           5.25 inch HH
             INTERFACE                              10 MHz ESDI
             DATA ENCODING METHOD                       2,7 RLL
             DATA TRANSFER RATE (Mbit/Sec)                 10.0

             DISK DRIVE CHARACTERISTICS
                HEADS                                         7
                CYLINDERS                                  1250
                SECTORS/TRACK (512 Byte Sectors)    34,35 or 36
                WRITE PRECOMPENSATION CYLINDER            NA***
                REDUCED WRITE CURRENT CYLINDER            NA***
                MINIMUM STEP PULSE RATE                   NA***
                UNFORMATTED BYTES/TRACK                  20,832
                RADIAL TRACK DENSITY (TPI)                1,135
                ROTATIONAL SPEED (RPM)                    3,600
                UNFORMATTED CAPACITY (Millions of Bytes)  182.3
                NA***(NOT APPLICABLE TO ESDI DRIVES)

                SECTOR MODE                           34     35     36
                ------------------------------------------------------
                FORMAT CAP. (Millions of Bytes)    152.3  156.8  161.3
                FORMAT CAP. (MB=1,048,576 Bytes)   145.3  149.5  153.8

             ACCESS TIMES (mSec)*
                SINGLE TRACK                                3.5
                AVERAGE OF ALL POSSIBLE SEEKS                17
                ONE-THIRD STROKE                             18
                MAXIMUM                                      35
             *(INCLUDES SETTLING)

             POWER REQUIREMENTS
                DISSIPATION (Watts)
                   TYPICAL                                 15.0
                   MAXIMUM                                 18.5
                CURRENT (Amps)
                   +5 V DC (+ or - 5%)                      0.6
                   +12 V DC (+ or - 5%)                     1.1
                   MAXIMUM STARTUP CURRENT                  2.5

             PHYSICAL DIMENSIONS
                HEIGHT (in)                               1.625
                WIDTH (in)                                 5.75
                DEPTH (in)                                    8
                WEIGHT (lbs)                                3.2

             OPERATIVE ENVIRONMENTAL LIMITS
                MINIMUM TEMPERATURE (Centigrade)             10
                MAXIMUM TEMPERATURE (Centigrade)             50
                THERMAL GRADIENT (Degrees C/Hour)            10

             RELIABILITY
                MTBF (Hours)                             35,000
                MTTR (Minutes)                               30
                COMPONENT DESIGN LIFE (Years)                 5