lotus

previous page: Hard Drive: NEC: D3661 113MB 3.5"/HH    ESDI
  
page up: Hard Drive Specs from NEC
  
next page: Hard Drive: NEC: D3715 270MB 3.5"/SL    ATA2 FAST

Hard Drive: NEC: D3713 345MB 3.5"/SL IDE / AT




D 3 7 1 3    NEC
                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders    2254|  670|     |
Capacity form/unform   345/      MB        Heads           4|   16|     |
Seek time   / track  12.0/ 3.0 ms          Sector/track     |   63|     |
Controller           IDE / AT              Precompensation
Cache/Buffer           128 KB SEGMENTED    Landing Zone
Data transfer rate    1.000 MB/S int       Bytes/Sector      512
                      4.300 MB/S ext
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         5 50    |    -40 60
Power: sleep              W     Humidity     %         8 80    |      8 80
       standby        1.3 W     Altitude    km            3.000|        12.000
       idle               W     Shock        g         5       |     55
       seek               W     Rotation   RPM      4090
       read/write     4.8 W     Acoustic   dBA
       spin-up            W     ECC        Bit   ON THE FLY
                                MTBF         h      50000
                                Warranty Month
Lift/Lock/Park     YES          Certificates                                  

Layout

NEC D3711/D3713 PRODUCT DESCRIPTION 806-521791-0 REV. 1

  +---------------------------------------------------------+
  |                                                         |XX
  |                                                         |XXI
  |                                                         |XXN
  |                                                         |XXT
  |                                                         |XXE  J1
  |                                                         |XXR
  |                                                         |XXF
  |                                                         |XXA
  |                                                         |XXC
  |                                                         |XXE
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |
 ++ LED                                    +--+SW1          |XX Power
 ++ J8                                     +--+             |XX J3
  +---------------------------------------------------------+

Jumpers

NEC D3711/D3713 PRODUCT DESCRIPTION 806-521791-0 REV. 1 1994

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

Optional Function Setting
-------------------------
The drive has the switch indicated by marking SW1 on the printed
circuit board, which provides various optional settings.

This switch provides the following various settings:

                 +ON-----------------+ SW1
                 |+--+ +--+ +--+ +--+|
  PC/AT I/F  /-- ||  | |  | |  | |  ||
  Connector  \-- ||  | |  | |XX| |XX||
  Side           |+--+ +--+ +--+ +--+|
                 +-1----2----3----4--+
                   |    |    |    +------ Should be set to OFF
                   |    |    +----------- Should be set to OFF
                   |    +---------------- CSEL
                   +--------------------- Master/Slave

NOTE
Each bit of the optional function setting switch is read at a time
of Rest or Power-on. The switch setting should be done before Power-
on.

Master/Slave
------------
Switch to be used for setting the master/slave mode. When the switch
is "ON" the drive works as a master, and when "OFF" the drive works
as a slave. On shipping, the switch is set at "ON".

CSEL
----
Switches for setting the mode of J1-28 pin.
J1-28 pin can be set to Cable Select, by the switch setting. When
CSEL is "ON", Cable Select is set. On shipping, Cable Select is set
as ineffective.

       Setting of switches for Cable Select function
                     +---------------+
                     |  Switch Bit   |
                     +---+---+---+---+
                     | 1 | 2 | 3 | 4 |
                     +---+---+---+---+
                     |OFF|ON |OFF|OFF|
                     +---+---+---+---+

Install

NEC D3711/D3713 PRODUCT DESCRIPTION 806-521791-0 REV. 1, 1994

Notes on installation
=====================

Installation
------------
The drive can be installed either horizontally or vertically. In
horizontal installation, mount the drive to maintain a positure that
its printed-circuit board will be situated below.

 The drive has 6 + 4 mounting screw holes. Use these screw holes to
 fix both frames for installation.

The drive require an interface cable and power supply cable to oper-
ate the drive. Furthermore, this drive various optional functions
including master/slave configuration.

Drive mounting
--------------

     horizontally             vertically
   +-----------------+   +--+             +--+ +------------------+
   |                 |   |  +-----+ +-----+  | |                  | x
   |                 |   |  |     | |     |  | x+----------------+x
 +-+-----------------+-+ |  |     | |     |  | ||x              x||
 +---------------------+ |  |     | |     |  | ||  x          x  ||
                         |  |     | |     |  | ||    x      x    ||
      x           x      |  |     | |     |  | ||      x  x      ||
 +------x------x-------+ |  +-----+ +-----+  | ||       xx       ||
 +-+------x--x-------+-+ +--+             +--+ ||     x    x     ||
   |       xx        |                         ||   x        x   ||
   |     x    x      |                         || x            x ||
   +---x--------x----+                         |x                x|
     x            x                           x++----------------++x
      UNACCEPTABLE!                                UNACCEPTABLE!
      Never install PC board on the Top!

Two drives can be connected in daisy-chain using the same interface
cable.

J1 Interface Connector
----------------------
The connector J1 for the interface is a 40-pin box type and right
angle connector. Use the interface cable within limit of 46 cm in
length.

 Sample: Adapter connector on the J1 cable side
         DUPONT 66900-240 or equivalent (integrated housing and pin)

J3 Power Connector
------------------
The power supply connector J3 is AMP P/N 350211-1 or equivalent.

The AMP P/N 1-480424-0 is applicable to a connector housing on the
cable side. For the power cable take current consumption of the
drive and cable length into consideration. Use a connector pin
suitable for the writing.

                               COMPONENT SIDE
  +---------+-----------------------------------------+
  |+-------+| 2 o o 8 o o o o o o o o o o o o o o o o |
  ||1 2 3 4||                                         |
  |\-------/| 1 o 5 o o o o o o o o o o o o o o o o o |
  +---------+-----------------------------------------+
   J3           J1             SOLDER SIDE

 J3 Pin 1 +12VDC
        2 +12VDC Return
        3 + 5VDC Return
        4 + 5VDC

Connectors J1 and J3 are molded as a unit.

J8 LED Connector
----------------
The drive is provided with a signal connector used to illuminate LED
to indicate that the drive is busy in exchanging data/command to and
from PC/AT host system. The signal connector is ELCO 00 8283 0211
00000 or equivalent.

The ELCO 608283 3028 45000 or equivalent is applicable to a housing
on the cable side and ELCO 608283 0513 99 808 is a receptacle
contact.

          +-----+ J8        1: LED anode side
          |1   2|           2: LED cathode side
       ---+-----+----PWB

Interface Circuit
-----------------
Input
Signal Low = 0.0 VDC to 0.8 VDC
Signal High = 2.2 VDC to Vdd (Vdd is service voltage of 5v)

Output
Signal Low = 0.0 VDC to 0.4 VDC (0.5V @ 12mA Sink)
Signal High = 2.5 VDC to 5.25 VDC or Open Circuit

Features

NEC D3711/D3713 PRODUCT DESCRIPTION 806-521791-0 REV. 1, 1994

General Outline and Features
----------------------------
The D3711/D3713 Magnetic Disk Drives are storage devices with PC AT
Interface and these drives have 3.5" thin film magnetic disk platters
and high performance MIG heads.

These drives provide the intelligent general translation mode to
emulate the various type of existing disk drivers for easy
implemetation. And also they support the 1:1 Interleave and the pre-
fetch Read-Look-Ahead cache features for the high performance
throughput. Each drive can be connected to the Host PC system up to
two Master and Slave with daisy chained style.

To prevent data track from the damage caused by the excessive shock
and vibration during the transportation, they have Auto-Carriage-
Lock mechanism, which position its magnetic heads at the CSS (Contact
Start Stop) area on the innermost cylinder of the magnetic disk.
Upon the power up, the magnetic heads take off at the CSS area. When
the power turns off, the magnetic heads move to the CSS zone auto-
matically, and are kept by the Auto-Carriage-Lock mechanism.

The servo system of these drives use the sector servo method, by
which the servo signals are embedded on the data track. This system
realizes the precise positioning with minimizing the thermal off-
track by temperature. Furthermore, these drives attain a high-speed
seek of 12 ms (average seek time) by using the Rotary-Voice-Coil
motor.

These drives employ the 1-7 RLL recording scheme for read/write
ecoding method and On-the-Fly ECC to each sector to garantee a high-
reliable data integrity. By this method, these drives recover auto-
matically for read error, up to burst 11 bits.

The spindle motor is an inside-hub type, and the high integrated LSI
is used for the interface circuit, read/write circuit, servo circuit.
Therefore, the down sizing and low power consumption drives are
realized.

Since the magnetic platters and magnetic heads are enclosed in the
air-closed package which is made from aluminium alloy, these drives
are protected from the micro-dust of outer air, so that they provide
the high-relibility.













TOP
previous page: Hard Drive: NEC: D3661 113MB 3.5"/HH    ESDI
  
page up: Hard Drive Specs from NEC
  
next page: Hard Drive: NEC: D3715 270MB 3.5"/SL    ATA2 FAST