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Hard Drive: HEWLETT PACKARD: HP C2490A-012 2100MB 3.5"/HH SCSI2 D/W




H P   C 2 4 9 0 A - 0 1 2    HEWLETT PACKARD
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/HH               Cylinders    2465|     |     |
Capacity form/unform  2100/      MB        Heads          18|     |     |
Seek time   / track   9.2/ 2.5 ms          Sector/track     |     |     |
Controller           SCSI2 DI/WI/FAST      Precompensation
Cache/Buffer           256 KB SEGMENTED    Landing Zone
Data transfer rate    5.000 MB/S int       Bytes/Sector      512
                     20.000 MB/S ext SYNC
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         5 50    |    -40 65
Power: sleep              W     Humidity     %         8 80    |      5 90
       standby            W     Altitude    km    -0.305  3.048| -0.305 15.240
       idle               W     Shock        g        10       |     50
       seek          18.9 W     Rotation   RPM      6400
       read/write    18.0 W     Acoustic   dBA        39
       spin-up       38.0 W     ECC        Bit   144,REED SOLOMON
                                MTBF         h     500000
                                Warranty Month        60
Lift/Lock/Park     YES          Certificates     CSA,IEC950,TUV,UL1950,VDE

Layout

HEWLETT HP C2490A-012 INSTASTALLATION GUIDELINES 5961-4360 10/93

  +---------------------------------------------------------+
  |                                                         |XX SCSI
  |                                                         |XX C
  |                                                         |XX O
  |                                                         |XX N
  |                                                         |XX N
  |                                                         |XX E
  |                                                         |XX C
  |                                                         |XX T
  |                                                         |XX O
  |                                                         |XX R
  |                                                +--J2    |XX1
  |                                                4--1     |+-6
  |                                                         || | J3
  |                                                         |+-1
 ++LED                                                      |XX
 ++                                                         |XX Power
  +---------------------------------------------------------+  1

   +----------------------------------------------------+
   |                                                    |
   |                                                    |
   |  REAR VIEW                                         |
   |                                                    |
   |                                                    |
   |    SCSI Connector                     J3    Power  |
   ++34------------------------------1-++6----1++------++
   ||\XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/||::::::||XXXXXX||
   ++68------------------------------35++------++4-----1+
   +--                                               ---+

Jumpers

HEWLETT HP C2490A-012 INSTALLATION GUIDELINES 5961-4360 10/93

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

 J2 Option Connector Pin-Set
 ---------------------------
      +---+
     4| o |-+-- Remote
     3| o |-+
     2| o |-+
     1| o |-+-- Auto-Spin Up
      +---+

 Remote
 ------
 OPEN    Drive will operate as a STAND ALONE DEVICE. Jumpers should be
         used to select the SCSI ID.

 SHORTED Drive will operate as a REMOTE DEVICE. The SCSI ID is set by
         applying remote logic (low true) to the Unit Select inputs.

   +----------+-------------------------------+
   | SCSI     |             PINS              |
   | ADDRESS  |U/SEL 3|U/SEL 2|U/SEL 1|U/SEL 0|
   +----------+-------+-------+-------+-------+ (OPEN = FALSE)
   |    0     | OPEN  | OPEN  | OPEN  | OPEN  | (CLOSED = TRUE)
   |    1     | OPEN  | OPEN  | OPEN  | CLOSED|
   |    2     | OPEN  | OPEN  | CLOSED| OPEN  |
   |    3     | OPEN  | OPEN  | CLOSED| CLOSED|
   |    4     | OPEN  | CLOSED| OPEN  | OPEN  |
   |    5     | OPEN  | CLOSED| OPEN  | CLOSED|
   |    6     | OPEN  | CLOSED| CLOSED| OPEN  |
   |    7     | OPEN  | CLOSED| CLOSED| CLOSED|
   |    8     | CLOSED| OPEN  | OPEN  | OPEN  |
   |    9     | CLOSED| OPEN  | OPEN  | CLOSED|
   |   10     | CLOSED| OPEN  | CLOSED| OPEN  |
   |   11     | CLOSED| OPEN  | CLOSED| CLOSED|
   |   12     | CLOSED| CLOSED| OPEN  | OPEN  |
   |   13     | CLOSED| CLOSED| OPEN  | CLOSED|
   |   14     | CLOSED| CLOSED| CLOSED| OPEN  |
   |   15     | CLOSED| CLOSED| CLOSED| CLOSED|
   +----------+-------+-------+-------+-------+

 Auto Spin-Up
 ------------
 OPEN    Disabled, drive will not spin up until initiator sends Start
         Unit Command. (With Auto Spin-Up disabled, the drive will
         return "not ready" to all commands except REQUEST SENSE,
         INQUIRY, RESERVE, RELEASE, and START UNIT until the drive is
         Ready for Access.

SHORTED Enabled, drive will spin up automatically at Power-On.

J3 Option Connector Pin-Set
---------------------------

            U/SEL 3 ------------+   +------------- U/SEL 2
           RESERVED --------+   |   |   +--------- U/SEL 1
              +5Vdc ----+   |   |   |   |   +----- U/SEL 0
                      +-6-+-5-+-4-+-3-+-2-+-1-+
                      | o | o | o | o | o | o |
                      | o | o | o | o | o | o |
                      +-+-+-+-+-+-+-+-+-+-+-+-+
      Write Protect ----+   |   |   |   |   +----- Open Collector
                GND --------+   |   |   +--------- Open Collector
       Activity LED ------------+   +------------- Sync. Spindle

 +-----+-----------------------+-------------------------------------+
 |Pins | Upper Pin             |Lower Pin                            |
 +-----+-----------------------+-------------------------------------+
 | 1   |SCSI Unit Select 0:    |Open collector output: pulled high if|
 |     |input, negative true   |Remote pinset is shorted; pulled low |
 |     |                       |if Remote pinset is open             |
 +-----+-----------------------+-------------------------------------+
 | 2   |SCSI Unit Select 1:    |Open collector output: pulled high if|
 |     |input, negative true   |Remote pinset is shorted; pulled low |
 |     |                       |if Remote pinset is open             |
 +-----+-----------------------+-------------------------------------+
 | 3   |SCSI Unit Select 2:    |Sync Spindle output if Remote pinset |
 |     |input, negative true   |is shorted, pulled low if Remote pin-|
 |     |                       |set is open                          |
 +-----+-----------------------+-------------------------------------+
 | 4   |SCSI Unit Select 3:    |Activity LED open collector output   |
 |     |input, negative true   |for external drive activity LED;     |
 |     |                       |pulled low during initialization for |
 |     |                       |address selection                    |
 +-----+-----------------------+-------------------------------------+
 | 5   |RESERVED, must be open |Ground                               |
 +-----+-----------------------+-------------------------------------+
 | 6   |+5Vdc output: may be   |Write Protect:                       |
 |     |used to power extermnal|OPEN Drive looks at Mode Page header |
 |     |LED (there is a 261 ohm|     and responds accordingly;       |
 |     |current limiting       |     default = NOT write protected   |
 |     |resistor in series with|                                     |
 |     |this pin)              |CLOSED Drive is forced into the Write|
 |     |                       |       Protect mode                  |
 +-----+-----------------------+-------------------------------------+

Install

HEWLETT HP C2490A INSTALLATION GUIDELINES 5961-4360 10/1993

Notes on Installation
=====================

Screws
------
Maintain a minimum clearance of 0.06 in. (1.5mm) between any system
structure and the top and all four sides of the disk drive. Insure
that the system structure contacts only the drive mounting frames
and clears the drive HDA by at least 0.06 in. (1.5mm).

Maintain a minimum clearance of 0.04 in. (1.0 mm) between any system
structure and any PCA component.

Use 6/32 UNC screws with flat washers under the heads and torque
them to 15 inch-pounds.

When mounted, the screw should not protrude more than 6 mm (0.24in.)
into drive from mounting frame surface.

Operating Temperature Guidelines
--------------------------------
Ambient air temperature and airflow must be properly balanced to
maintain drive performance and reliability.

 Operating Temperature Considerations
   The operating ambient air temperature specification is 5*C to 50*C
   (41*F to 122*F).

   Adjust the ambient air temperature to prevent the temperature at
   each location from exceeding the stated limit.

 Airflow Considerations
   The recommended air flow to maintain the component temperatures is
   3 to 5 CFM (cubic feet per minute) with most of the air flowing
   across the printed circuit board.

   Adjust the air flow to prevent the temperature at each location
   from exceeding the stated limit.

 Recommended Mating Connectors
 -----------------------------
 +--------------------------------------+----------------------------+
 |Connector/Function                    |Recommended Mating Connector|
 +--------------------------------------+----------------------------+
 |               Equivalents may be used                             |
 +--------------------------------------+----------------------------+
 |SCSI Connector (narrow: single-ended, |3M 3425-6600                |
 |and differential)                     |                            |
 +--------------------------------------+----------------------------+
 |SCSI Connector (wide differential)    |AMP 786090-7                |
 +--------------------------------------+----------------------------+
 |DC power                              |AMP 1-480424-0              |
 +--------------------------------------+----------------------------+
 |Option Connector (narrow: single-ended|Surface mount connector:    |
 |and differential                      |Berg Electronics, Serie     |
 |                                      |91592-xxx (xxx = plating    |
 |                                      |designation and connector   |
 |                                      |width)                      |
 |                                      |                            |
 |                                      |Discrete wire connector:    |
 |                                      |Hirose Electric (HRS), 543  |
 |                                      |series dual row socket (re- |
 |                                      |quires contacts:            |
 |                                      |DF11-2428SCA, 1mm mating    |
 |                                      |depth)                      |
 +--------------------------------------+----------------------------+
 |Option Connector wide differential    |Ribbon Cable Connector, 12- |
 |                                      |pin header, 2mm pitch,      |
 |                                      |polarized, for 28 ga ribbon |
 |                                      |cable with .61mm - .97mm pcv|
 |                                      |coating. AMP p/n 1-111623-7 |
 +--------------------------------------+----------------------------+
 |Shorting jumpers (2.0mm spacing)      |Dupont 2x1 shorting jumper: |
 |                                      |86730-001 (HP p/n 0360-2526)|
 +--------------------------------------+----------------------------+

Differential SCSI Connector
---------------------------
SHIELD GND is optional on some cables. (Implementors note: Some
shielded flat ribbon cables use pin 1 as a connection to the shield.)













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