
S T 3 2 8 3 A    SEAGATE
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders    1024|  978|     |
Capacity form/unform   245/      MB        Heads           5|   14|     |
Seek time   / track  12.0/ 4.0 ms          Sector/track   63|   35|     |
Controller           IDE / AT              Precompensation
Cache/Buffer           128 KB LOOK-AHEAD   Landing Zone
Data transfer rate    3.000 MB/S int       Bytes/Sector      512
                      6.000 MB/S ext
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         5 50    |    -40 70
Power: sleep              W     Humidity     %                 |
       standby        1.0 W     Altitude    km                 |
       idle           3.5 W     Shock        g        10       |     75
       seek           5.7 W     Rotation   RPM      4500
       read/write     5.0 W     Acoustic   dBA
       spin-up            W     ECC        Bit
                                MTBF         h     200000
                                Warranty Month        12
Lift/Lock/Park     YES          Certificates


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SEAGATE  ST3283A  INSTALLATION GUIDE 36190-001, REV. A

  +---------------------------------------------------------++-1
  |                                                         || |J5
  |                                                         |+-+
  |                                                         |XX J7
  |                                                         |xx
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |+--+                                                     |XX
  ||  |                                                     |XX J1
  ||  |J8                                                   |XX I/O
  |+--1                                                     |XX
  |                                                         |XX
  |                                                         |X1
  |                                                         |
  |                                                +--+J6   |XX Power
  |                                                +--+     |XX J3
  +---------------------------------------------------------+



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                      J   U   M   P   E   R   S
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SEAGATE  ST3283A  INSTALLATION GUIDE 36190-001, REV. A

 Jumper setting
 ==============

 J3  DC Power and Pin Connector Assignment
 -----------------------------------------

      +------------+
      | 1  2  3  4 |
      +-+--+--+--+-+
        |  |  |  +----- + 5 VDC
        |  |  +-------- + 5 Volts Return
        |  +----------- +12 Volts Return
        +-------------- +12 VDC



 J5  Master/Slave and Slave Present Jumper Block
 ------------------------------------------------

 +3--1+ One Drive Only  +3--1+ Drive      +3--1+ Drive is
 |o  o| (Default)       |o  X| is Slave   |X  o| Master with
 |o  o|                 |o  X|            |X  o| Slave Present
 +4--2+                 +4--2+            +4--2+



 J7  Mini Power Connector
 ------------------------
      +-------+
      | o o o |
      +-+-+-+-+
        | | +---- + 5 VDC
        | +------ +12 VDC
        +-------- +GND




 J8  Options Jumper Block
 -------------------------

       13 11  9  7  5  3  1
      +---------------------+
      | o  o  o  o  o  o  o |
      | o  o  o  o  o  o  o |
      +---------------------+
       14 12 10  8  6  4  2

  Pin     Function
  -------------------------------------
   3      Removed for Key
   9      Clock Ground
  10      External Spindle Clock Sync.
  13      Remote LED-
  14      Remote LED+

 Note: All other pins are factory use only!


 Spindle motor synchronization
 -----------------------------
 You can synchronize the spindle motors of an array of drives by
 connecting a twisted pair to each drive. Use one strand of the
 twisted pair to connect together Pin 9 of the options jumper block
 of each drive. Use the other strand to connect together pin 10 of the
 options jumper block of each drive. The maximum cable length is 6
 feet (1.8 meters).


 Installing a remote LED
 -----------------------
 If you want to attach a remote LED to your ST3283A drive, attach a
 two-pin connector to Pins 13 and 14 of the Options jumper block.



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SEAGATE  ST3283A  INSTALLATION GUIDE 36190-001, REV. A

 Drive Orientation
 =================

 You can mount the drive in any orientation provided you do not mount
 it more than 5* from a vertical or horizontal axis.

 Note: Regardless of which set of holes you use, use only three
 mounting screws.


 Bottom mounting holes
 ---------------------
 Use 6-32 UNS screws in three of the four available bottom mounting
 holes.

 Do not insert the bottom mounting screws more than 0.20 inches (6
 turns) into the drive frame. If you use a screw that is too long, you
 could damage the drive.


 Side mounting holes
 -------------------
 Use 6-32 UNS screws in three of the six available side mounting
 holes. Make sure your installation adheres to the following
 guidelines:

   - Do not use all three mounting holes on the same side of the
     drive.

   - Use one or both of the following: the side mounting hole near
     the power connector or the side mounting hole (on the other
     side of the drive) near the interface connector.

   - Use at least one, but no more than two, of the other four side
     mounting holes.

 Do not insert side mounting screws more than 0.13 inches (4 turns)
 into the drive frame. If you use a screw that is too long, you cold
 damage the drive.


 Connecting AT Interface Cable
 -----------------------------
 It may be easier to connect the cable before installing the drive
 and fastening the drive mounting screws. Note the location of pin 1.


 Power Connector
 ---------------
 Make sure the system power switch is in the "off" position. Connect
 a system power cable to the appropriate drive power connector:
 either the standard 4-pin power connector or the 3-pin mini power
 connector.



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                      F   E   A   T   U   R   E  S
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SEAGATE  ST3283A/ST3283N  INSTALLATION GUIDE  36190-001, REV. A

 Overview
 --------
 The ST3283A drive is designed for AT (286, 386, and 486) systems. The
 ST3283N drive is intended for IBM and compatible computers,
 Macintosh, and other SCSI systems.

 Low-level formatting
 -------------------
 St3283 family drives are low-level formatted at the factory to 512
 bytes per sector. You do not need to low level AT drives. However,
 SCSI drives may require low-level formatting when used with some
 host adapters to optimize their performance in your system.


 Installing the ST3283A
 ----------------------
 The table below shows the recommended translation geometry for the
 ST3283A. This geometry is printed on the drive top cover.

 If the drive offered by the CMOS do not support the translation
 geometry shown in the table below and your system does not support a
 "user-defined" drive type, select a drive type in your systemj CMOS
 with capacity less than or equal to 233.99 Megabytes, as shown under
 "Formatted CMOS Megabytes".

  Formatted MB          Translation Geometry        Formatted CMOS MB
     245.36      CYL. 978  HEAD 14  SEC/TRACK 35         233.99


 Installing the ST3283N
 ----------------------
 The SCSI drive handles drive geometry and defect management inter-
 nally. In AT systems with SCSI drives, select a CMOS drive type of
 zero or the "no drive installed" option.


 Maintenance and repair
 ----------------------
 Seagate drives do not require any preventive maintenance. The head/
 disc assembly is sealed and does not contain any user-serviceable
 components. Tampering with the factory seal voids the warranty.


 Radio and television interference
 ---------------------------------
 This product complies with Class B limits for radio noise emissions
 from computer equipmentas set in the radio interference regulations
 of the Canadian Department of Communikations.


