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Hard Drive: CDC: WREN VFH 94181-702 613MB 5.25"/FH SCSI1 SE




W R E N   V F H   9 4 1 8 1 - 7 0 2    CDC
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 5.25"/FH              Cylinders    1546|     |     |
Capacity form/unform   613/      MB        Heads          15|     |     |
Seek time   / track  16.5/     ms          Sector/track     |     |     |
Controller           SCSI1 SINGLE-ENDED    Precompensation 65535
Cache/Buffer            32 KB              Landing Zone     1545
Data transfer rate    2.000 MB/S int       Bytes/Sector      512
                      4.700 MB/S ext SYNC
Recording method     RLL                            operating  | non-operating
                                                  -------------+--------------
Supply voltage                  Temperature *C                 |
Power: sleep              W     Humidity     %                 |
       standby            W     Altitude    km                 |
       idle               W     Shock        g        10       |     32
       seek               W     Rotation   RPM
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit
                                MTBF         h     100000
                                Warranty Month
Lift/Lock/Park     YES          Certificates

Layout

CDC WREN 5 94181-702 PRODUCT MANUAL 77765336-F 1991

  +---------------------------------------------------------+
  |                                                         |+-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

Jumpers

CDC WREN 5 94181-702 PRODUCT MANUAL 77765336-F 1991

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.













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