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		 Miniscribe Disk Drive Specifications
				For
			    Model: 3085
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     FORM FACTOR                           5.25 inch HH
     INTERFACE                              ST412/ST506
     DATA ENCODING METHOD                           MFM
     DATA TRANSFER RATE (Mbit/Sec)                  5.0

     DISK DRIVE CHARACTERISTICS
	HEADS                                         7
	CYLINDERS                                  1170
	SECTORS/TRACK (512 Byte Sectors)             17
	WRITE PRECOMPENSATION CYLINDER              512
	REDUCED WRITE CURRENT CYLINDER             1170
	MINIMUM STEP PULSE RATE (micro-Seconds)       6
	UNFORMATTED BYTES/TRACK                  10,416
	RADIAL TRACK DENSITY (TPI)                1,100
	ROTATIONAL SPEED (RPM)                    3,600
	UNFORMATTED CAPACITY (Millions of Bytes)   85.3
	FORMATTED CAPACITY (Millions of Bytes)     71.3
	FORMATTED CAP. (MB = 1,048,576 Bytes)      68.0

     ACCESS TIMES (mSec)*
	SINGLE TRACK                                  5
	AVERAGE OF ALL POSSIBLE SEEKS              18.4
	MAXIMUM                                      50
     *(BASED ON A 6 MICRO-SECOND STEP RATE)
     *(INCLUDES SETTLING)

     POWER REQUIREMENTS
	DISSIPATION (Watts)
	   TYPICAL                                 13.5
	   MAXIMUM                                 20.0
	CURRENT (Amps)
	   +5 V DC (+ or - 5%)                     0.66
	   +12 V DC (+ or - 5%)                    0.85
	   MAXIMUM STARTUP CURRENT                  2.6

     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