
S T 4 7 0 2 N                   W R E N    SEAGATE
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 5.25"/FH              Cylinders    1546|     |     |
Capacity form/unform   601/  702 MB        Heads          15|     |     |
Seek time   / track  16.5/ 3.0 ms          Sector/track   50|     |     |
Controller           SCSI1 SINGLE-ENDED    Precompensation
Cache/Buffer            32 KB LOOK-AHEAD   Landing Zone
Data transfer rate    2.000 MB/S int       Bytes/Sector      512
                      4.700 MB/S ext SYNC
Recording method     RLL 2/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C                 |
Power: sleep              W     Humidity     %                 |
       standby            W     Altitude    km                 |
       idle               W     Shock        g        10       |     32
       seek          21.0 W     Rotation   RPM      3600
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit
                                MTBF         h     100000
                                Warranty Month        12
Lift/Lock/Park     YES          Certificates



**********************************************************************
                        L   A   Y   O   U   T
**********************************************************************
SEAGATE  ST4702N  JUMPER SETTING

  +---------------------------------------------------------+
  |                                                         |+-1
  |                                                         || |J4
  |                                                         |+-+
  |                                                     ++  |XX
  |                                                     ||  |XX
  |                                                     ||  |XX
  |                                     Terminator      +1  |XX J3
  |                                     resistor        ++  |XX SCSI
  |                                     (SIPs)          ||  |XX I/O
  |                                                     ||  |XX
  |                                                     +1  |XX
  |                                                     ++  |XX
  |                                                     ||  |XX
  |                                                     ||  |X1
  |                                                     +1  |
  |                                                         |XX Power
  |                                                         |XX
  +---------------------------------------------------------+  1



**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
SEAGATE  ST4702N  JUMPER SETTING

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

 J4 SCSI ID/Option Select Header
 -------------------------------

 * Note: If you have #77701215k silk-screened near the 50-pin SCSI
         cable connector, the pin-1 for the 3 terminating resistors is
         away from the DC power connector.


                                    +-----
                                    |O O O
 -PWA---+-2--4--6--8--10-12-14-16-+-+
        | o  o  o  o  o  o  o  o  | |O O
        | o  o  o  o  o  o  o  o  | +-----
        +-1--3--5--7--9--11-13-15-+
          |  |  +--+--+  |  |  |
          |  |     |     |  |  +-------- RESERVED (not on all models)
          |  |     |     |  +----------- Parity check enable
          |  |     |     +-------------- Motor start option enable
          |  |     +-------------------- SCSI ID
          |  +-------------------------- Terminator power
          +----------------------------- Terminator power



 J4  1-2/3-4  Terminator Power
 -----------------------------
   +-2-4---        +-2-4---          +-2-4---
   | X o           | o X             | o o
   | X o           | o X             | xxx
   +-1-3-          +-1-3-            +-1-3-
 Terminator Power  Terminator Power   Terminator Power
 from Drive        to SCSI Bus        from SCSI Bus
 (DEFAULT)


 J4  SCSI ID
 -----------
   +----------+-----------------------+
   | SCSI ID  |        Jumpers        |
   |          | 5-6   | 7-8   | 9-10  |
   +----------+-------+-------+-------+
   |    0     | OPEN  | OPEN  | OPEN  |
   +----------+-------+-------+-------+
   |    1     | OPEN  | OPEN  | CLOSED|
   +----------+-------+-------+-------+
   |    2     | OPEN  | CLOSED| OPEN  |
   +----------+-------+-------+-------+
   |    3     | OPEN  | CLOSED| CLOSED|
   +----------+-------+-------+-------+
   |    4     | CLOSED| OPEN  | OPEN  |
   +----------+-------+-------+-------+
   |    5     | CLOSED| OPEN  | CLOSED|
   +----------+-------+-------+-------+
   |    6     | CLOSED| CLOSED| OPEN  |
   +----------+-------+-------+-------+
   |    7     | CLOSED| CLOSED| CLOSED|
   +----------+-------+-------+-------+


 J4 11-12 Motor Start Option
 ---------------------------
 11-12 CLOSED  Enables the Motor Start Option. In this mode of
               operation the drive will wait for a Start Unit Command
               from the Host before starting the Motor.


 J4 13-14  Parity Check
 ----------------------
 13-14 CLOSED  Parity checking is enabled.


 DC Power and pin connector assignments
 --------------------------------------
    --+------------+-- pin 1    +12 VDC
      | 4  3  2  1 |   pin 2    +12 Volts Return
      +------------+   pin 3    + 5 Volts Return
                       pin 4    + 5 VDC

 Note: Pins on the drive select and configuration select header are
 provided to facilitate manual drive configuration. No devices other
 than jumpers should be connected to these pins. Improper connection
 to external devices (switches, connectors, etc.) could adversely
 affect drive performance. Exact location of these pins and headers
 may change without notice.


