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		 Miniscribe Disk Drive Specifications
				For
			    Model: 3438P
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     FORM FACTOR                           5.25 inch HH
     INTERFACE                              ST412/ST506
     DATA ENCODING METHOD                       2,7 RLL
     DATA TRANSFER RATE (Mbit/Sec)                  7.5

     DISK DRIVE CHARACTERISTICS
	HEADS                                         4
	CYLINDERS                                   615
	SECTORS/TRACK (512 Byte Sectors)             26
	WRITE PRECOMPENSATION CYLINDER              128
	REDUCED WRITE CURRENT CYLINDER              615
	MINIMUM STEP PULSE RATE (micro-Seconds)       2
	UNFORMATTED BYTES/TRACK                  15,625
	RADIAL TRACK DENSITY (TPI)                  588
	ROTATIONAL SPEED (RPM)                    3,600
	UNFORMATTED CAPACITY (Millions of Bytes)   38.4
	FORMATTED CAPACITY (Millions of Bytes)     32.7
	FORMATTED CAP. (MB = 1,048,576 Bytes)      31.2

     ACCESS TIMES (mSec)*
	SINGLE TRACK                                 15
	ONE-THIRD STROKE**                           55
	MAXIMUM                                     106
     *(BASED ON A 2 MICRO-SECOND STEP RATE)
     *(INCLUDES SETTLING)
     **(APPROXIMATION OF AVERAGE)

     POWER REQUIREMENTS
	DISSIPATION (Watts)
	   TYPICAL                                 18.6
	   MAXIMUM                                 21.5
	CURRENT (Amps)
	   +5 V DC (+ or - 5%)                      0.6
	   +12 V DC (+ or - 5%)                     1.3
	   MAXIMUM STARTUP CURRENT                  3.5

     PHYSICAL DIMENSIONS
	HEIGHT (in)                               1.625
	WIDTH (in)                                 5.75
	DEPTH (in)                                    8
	WEIGHT (lbs)                                2.2

     OPERATIVE ENVIRONMENTAL LIMITS
	MINIMUM TEMPERATURE (Centigrade)              4
	MAXIMUM TEMPERATURE (Centigrade)             50
	THERMAL GRADIENT (Degrees C/Hour)            10

     RELIABILITY
	MTBF (Hours)                             20,000
	MTTR (Minutes)                               30
	COMPONENT DESIGN LIFE (Years)                 5