DISK DRIVE SPECIFICATIONS

        MODEL: M2248E                           PART NUMBER: B03B-4945-B002A

        INTERFACE: ESDI                         RECORDING CODE: RLL (1,7)

        CAPACITY----Unformatted: 285.3 Mbytes   Formatted: 224.0 Mbytes
                    Per Track: 20.864 Kbytes    Sectors/track: 64

        NUMBER OF---Heads:     11               Servo Tracks: Dedicated
                    Cylinders: 1243

        POSITIONING TIME:
                    Track to track: 4 msec.     Average: 18 msec.
                    Maximum:        35 msec.

        POSITIONING METHOD: Rotary Voice Coil Motor

        SPINDLE SPEED: 3,600 R.P.M.             AVERAGE LATENCY: 8.3 msec.

        DENSITY---Recording: 19,295 B.P.I.      Track: 1,267 T.P.I.

        DATA TRANSFER RATE:
                    Burst: N/A
                    Sustained: 1,250 Kbytes/sec.
        BUFFER SIZE / TYPE: N/A 

        START TIME: 20 sec.                     STOP TIME: 15 sec.

        ERROR RATES:  Recoverable: 10 errors per 10E11 bits read
                      Non-recoverable: 10 errors per 10E13 bits read
                      Seek: 10 errors per 10E7 seeks

                              PHYSICAL SPECIFICATIONS

        DIMENSIONS: 146mm X 83mm X 203mm         WEIGHT: 3.5 Kg
        POWER REQUIREMENTS: +12V +/- 5% , +5V +/- 5%
               CONSUMPTION: 38 Watts

                                OPERATING          NON-OPERATING     
        Temperature - - - - | 5 C to 45 C       | -40 C to 60 C      |
        Humidity - - - - - -| 20% to 80% RH     |  5% to 95% RH      |
        Altitude - - - - - -| 0m to 3,000m      |  0m to 12,000m     |
        Vibration - - - - - | less than 0.2G    |  less than 0.4G    |
        Shock - - - - - - - | less than 2G      |  less than 20G     |
        Temperature Gradient| 15 C/h or less    |  15 C/h or less    |


                                  RELIABILITY DATA

        Mean Time Before Failure (MTBF) : 30,000 Hrs.
        Mean Time To Repair (MTTR):          0.5 Hrs.
        Component life:                        5 Years.

                                   STANDARDS

          UL   APPROVED  
          CSA  APPROVED  
          TUV  APPROVED