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Hard Drive: NEC: D1741 125MB 1.8"/SSL IDE / AT




D 1 7 4 1    NEC
                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 1.8"/SUPERSLIMLINE    Cylinders        |  508|     |
Capacity form/unform   125/      MB        Heads            |   11|     |
Seek time   / track  17.0/     ms          Sector/track     |   44|     |
Controller           IDE / AT              Precompensation
Cache/Buffer               KB              Landing Zone
Data transfer rate    3.000 MB/S int       Bytes/Sector      512
                      4.500 MB/S ext
Recording method     RLL                            operating  | non-operating
                                                  -------------+--------------
Supply voltage     5 V          Temperature *C         5 55    |    -40 60
Power: sleep          0.2 W     Humidity     %                 |
       standby            W     Altitude    km                 |
       idle               W     Shock        g                 |    100
       seek           2.2 W     Rotation   RPM      5400
       read/write     2.2 W     Acoustic   dBA
       spin-up            W     ECC        Bit
                                MTBF         h     100000
                                Warranty Month
Lift/Lock/Park     YES          Certificates                                  

Layout

NEC D1711/D1731/D1741 APPLICATION NOTE 01.NOV.93 REV. B

  ---+43----------------------------------------1--47-49+-----
     |o o o o o o o o o o o o o o o o o o o o o o   o o |
     |o o o o o o o o o o o o . o o o o o o o o o   o o |
     44----------------------20-----------------2--48-50+

Jumpers

NEC D1711/D1731/D1741 APPLICATION NOTE 01.NOV.93 REV.B #40

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

Pin Assignment
--------------
These disk drives use a 50 pin interface connector with 2mm pin
spacing. The 5 Volts are supplied within that cable, master/slave
function can be selected by jumpers on pins 47/48 or pins 49/50.

Pin 20, 45, 46: keyed pins.
Pin 40, 43: Ground (5V return)
Pin 41, 42: 55 Volt

 Master
 ------
 Pin 47,48 CLOSED The drive is either master or a single drive.
                  (Default setting)

Slave
-----
No jumper installed.













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