DISK DRIVE SPECIFICATIONS

     MODEL  M2246E         

        INTERFACE  ESDI             RECORDING CODE   ELL (2,7)   

        CAPACITY----Unformatted  171.7    Mb.   Formatted  147.5  Mb.
                    Per Track    20,864   Bytes   Sectors/track 16 to 65 

        NUMBER OF---Heads        10             SERVO HEAD   1    
                    Cylinders    823           
        POSITIONING TIME 
                    Track to track  5       mS. Average  25        mS.
                    Maximum         50    mS. 

        SPINDLE SPEED   3600        R.P.M.    AVERAGE LATENCY  8.3     mS.

        DENSITY---Recording  20,400   B.P.I.     Track    850      T.P.I.
                              
        DATA TRANSFER RATE    1,250 kbytes/sec.
                                     

        START TIME    <20      Secs.    STOP TIME    <15       Secs.

        ERROR RATES   Recoverable  10 per 10*E 11 bits read
                      Non-recoverable  10 per 10*E 13 bits read
                      Seek             10 per 10*E 7 seeks


                              PHYSICAL SPECIFICATIONS

        DIMENSIONS.  (H*W*D)  3.3"*5.7"*8"          WEIGHT. 6.6 lbs     _
        POWER REQUIREMENTS. +12VDC, 1.8A (Max.4.8A); +5VDC, 1.6A         
                     Consumption.      30        Watts.

                                 OPERATING              NON-OPERATING      
        Temperature - - - - | 41 deg F to 113 deg F| -40 deg F to 140 deg F|
        Humidity - - - - - -| 20% RH to 80% RH     | 5% RH to 95% RH       |
        Altitude - - - - - -| 10,000 ft.           | 40,000 ft.            |
        Vibration - - - - - | .2 G                 | .4 G                  |
        Shock - - - - - - - | 2 G (10m or less)    | 20 G (10m or less)    |
        Temperature Gradient|           27 deg F/h or less                 |

                                  RELIABILITY DATA

             Mean time before failure    30,000    Hrs.
              Mean time to repair        <.5       Hrs.
               Component life            5      Yrs.
    
                                   STANDARDS

          UL       Yes                  
          CSA      Yes                  
          TUV      Yes