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Hard Drive: NEC: D3811 170MB 3.5"/SL SCSI2 SE




D 3 8 1 1    NEC
                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders     335|     |     |
Capacity form/unform   170/      MB        Heads          16|     |     |
Seek time   / track  12.0/     ms          Sector/track   63|     |     |
Controller           SCSI2 SINGLE-ENDED    Precompensation
Cache/Buffer           128 KB              Landing Zone
Data transfer rate          MB/S int       Bytes/Sector      512
                      5.000 MB/S ext
Recording method     RLL                            operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C                 |
Power: sleep              W     Humidity     %                 |
       standby            W     Altitude    km                 |
       idle           4.8 W     Shock        g                 |
       seek               W     Rotation   RPM      4500
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit
                                MTBF         h     100000
                                Warranty Month
Lift/Lock/Park     YES          Certificates                                  

Layout

NEC D3811/D3813 JUMPER SETTING

  +---------------------------------------------------------+
  |                                                         |XX
  |                                                 SW1     |XX
  |                                                  +++++++|XX
  |                                                  +++++++|XX SCSI
  |                                                         |XX I/F
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  | +-+                                                     |XX
  | | | J2                                                  |XX
  | | | Optional                                            |XX
  | +-+ Connector                                           |XX
  |+-+                                                      |XX
  |+-+LED                       +++++J4                     |
  |                             +++++RESERVED               |XX
  |                                                         |XX POWER
  +---------------------------------------------------------+

Jumpers

NEC D3811/3813 JUMPER SETTING

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

 SW1                                                  |\
  +-----------------------+ON                  -------+  \
  |+-+ +-+ +-+ +-+ +-+ +-+|                    -------+  /
  ||x| |x| |x| |x| |x| |x||                           |/
  |+-+ +-+ +-+ +-+ +-+ +-+|                     SCSI IF Connector Side
  +-1---2---3---4---5---6-+OFF
    |   |   |   |   |   +------ SCSI ID 2(0)
    |   |   |   |   +---------- SCSI ID 2(1)
    |   |   |   +-------------- SCSI ID 2(2)
    |   |   +------------------ Parity Check   ON -  CHECK
    |   |                                      OFF - NO CHECK
    |   +---------------------- Start Command  ON -  USE
    |                                          OFF - NONE-USE
    +-------------------------- ALLWAYS SETS OFF

 SW1 SCSI ID
 -----------
   +----------+-----------------------+
   | SCSI ID  |        Jumpers        |
   |          | ID2(2)| ID2(1)| ID2(0)|
   +----------+-------+-------+-------+
   |    0     | OFF   | OFF   | OFF   |
   |    1     | OFF   | OFF   | ON    |
   |    2     | OFF   | ON    | OFF   |
   |    3     | OFF   | ON    | ON    |
   |    4     | ON    | OFF   | OFF   |
   |    5     | ON    | OFF   | ON    |
   |    6     | ON    | ON    | OFF   |
   |    7     | ON    | ON    | ON    |
   +----------+-------+-------+-------+

J4 Connector
------------
All pins Factory use!
DON'T USE!

 J8 LED Connector
 ----------------
        2  1
     +--------+
     |  |  |  |
     +--+--+--+
     ++++-++-++
      +++-++-+
       |   +---- Anode Side
       +-------- Cathode Side

J2 Optional Connector
---------------------

   +-8+--+--+--+--+-1+
   +--+--+--+--+--+--+
  -+12+--+--+--+--+-7+-
  ---------------------
     Solder Side

 J2 SCSI ID (OPTIONAL!)
 ----------------------
   +----------+-----------------------+
   | SCSI ID  |        Jumpers        |
   |          | J2-3  | J2-2  | J2-1  |
   +----------+-------+-------+-------+
   |    0     | OPEN  | OPEN  | OPEN  | When using connector pin all
   |    1     | OPEN  | OPEN  | GND   | switches are set to off!
   |    2     | OPEN  | GND   | OPEN  |
   |    3     | OPEN  | GND   | GND   |
   |    4     | GND   | OPEN  | OPEN  |
   |    5     | GND   | OPEN  | GND   |
   |    6     | GND   | GND   | OPEN  |
   |    7     | GND   | GND   | GND   |
   +----------+-------+-------+-------+

J2-4 Parity Check

J2-5 The output pin of the clock spindle synchronous operation.

J2-6 The input pin of the clcok spindle synchronous operation.

J2-7-12 GROUND

Terminating Resistor Setting
----------------------------
SCSI interface needs the terminating resistor only set both ends of
the interface cable. The terminating resistor of the disk drive can
be installed to the socket on Single In Line. If the disk drive is
used with connecting the both ends of the interface cable, install
the terminating resistor. The recommended terminating resistor for
this disk drive is as below:

 Terminating Resistor:  BECKMAN INDUSTRIAL MII-5-221/33IJS
                        OR EQUIVALENT RESISTOR













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