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Hard Drive: NEC: D5127H 33MB 5.25"/HH RLL ST506




D 5 1 2 7 H    NEC
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 5.25"/HH              Cylinders     615|     |     |
Capacity form/unform    33/   38 MB        Heads           4|     |     |
Seek time   / track  40.0/ 8.0 ms          Sector/track   26|     |     |
Controller           RLL / ST506           Precompensation
Cache/Buffer               KB              Landing Zone
Data transfer rate    0.938 MB/S int       Bytes/Sector      512
                      0.938 MB/S ext
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                 |
       seek               W     Rotation   RPM      3600
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit
                                MTBF         h
                                Warranty Month
Lift/Lock/Park     NO           Certificates

Layout

NEC D5127/5147H PRODUCT DESCRIPTION

  +---------------------------------------------------------+
  |                                                         |XX
  |                                                         |XXJ2
  |                                                         |XX  20-P
  |       PWB                                               |2X
  |                                 Terminator  +-------+   |x J4
  |                                 Resistor    | SW1   |1  |  Ground
  |                                 ON/OFF Switch-------+   |XX
  |                                                         |XX
  |                                                         |XXJ1
  |                                                         |XX
  |                                     Drive Address---+   |XX  34-P
  |                                     Switch    | SW2 |1  |XX
  |                                               +-----+   |XX
  |                                                         |2X
  |                                                         |
  |                                                         |XXPower
  |                                                         |XXJ3
  +---------------------------------------------------------+  1

Jumpers

NEC D5127H/5147H PRODUCT DESCRIPTION

Jumper Setting
==============

 Switch1 - 1, 2, 3, 4  Drive Select
 ----------------------------------
   +----------+--------------------------------+
   | Drive    |            SWITCH 1            |
   | Select   | SW1   | SW2   | SW3   | SW4    |
   +----------+-------+-------+-------+--------+
   |    1     | CLOSED| OPEN  | OPEN  | OPEN   |
   +----------+-------+-------+-------+--------+
   |    2     | OPEN  | CLOSED| OPEN  | OPEN   |
   +----------+-------+-------+-------+--------+
   |    3     | OPEN  | OPEN  | CLOSED| OPEN   |
   +----------+-------+-------+-------+--------+
   |    4     | OPEN  | OPEN  | OPEN  | CLOSED |
   +----------+-------+-------+-------+--------+

Switch1 - 5, 6, 7 Not USED!
---------------------------

 Switch1 - 8  Radial, daisy chain mode
 -------------------------------------
   CLOSED  Drive configured for radial mode.
   OPEN    Drive configured for daisy chain mode.

 Switch2 - 1-8 Termination
 -------------------------
    All jumpers
    CLOSED  Termination is enabled

Features

NEC D5127H/5147H PRODUCT DESCRIPTION

Seek Time
---------

                                          | D5147  |
                                          | D5127  |
        ----------------------------------+--------+
        Track-to-Track         msec. typ. |   8    |
                       Average msec. typ. |  40    |
                       Average msec. max. |  70    |
        ----------------------------------+--------+













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