
H P   C 2 4 9 0 A - 0 0 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/FAST         Precompensation
Cache/Buffer           256 KB SEGMENTED    Landing Zone
Data transfer rate    5.000 MB/S int       Bytes/Sector      512
                     10.000 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


**********************************************************************
                        L   A   Y   O   U   T
**********************************************************************
HEWLETT  HP C2490A-002  INSTALLATION GUIDELINES 5961-4360 10/93

  +---------------------------------------------------------+
  |                                                     1-+ |XX
  |                                             Option  | | |XX
  |                                             Pin-Set | | |XX
  |                                                     | | |XX I
  |                                                     | | |XX N
  |                                                    16-+ |XX T
  |                                                         |XX E
  |                                                         |XX R
  |                                                         |XX F
  |                                                         |XX A
  |                                                         |XX C
  |                                                         |XX E
  |                                                         |X1
  |                                                         |
 ++LED                                                      |XX
 ++                                                         |XX Power
  +---------------------------------------------------------+  1



**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
HEWLETT  HP C2490A-002  INSTALLATION GUIDELINES 5961-4360 10/93

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

 Option Pinset
 -------------

       Auto Spinup-------------+  +----------------------Key
            Parity----------+  |  |  +-------------------N/C
              SDTR-------+  |  |  |  |  +----------------Sync Spindle
    Unit Attention----+  |  |  |  |  |  |  +-------------Key
     Write Protect-+  |  |  |  |  |  |  |  |
                   |  |  |  |  |  |  |  |  |
         16 15 14 13 12 11 10  9  8  7  6  5  4  3  2  1
        +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
        |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
        +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
         |  |   |                            |  |  |  |
         |  |   +-RESERVED                   |  |  |  +--Unit Select 1
         |  +-----RESERVED                   |  |  +-----Unit Select 2
         +--------RESERVED                   |  +--------Unit Select 3
                                             +-----------RESERVED


 Unit Select
 -----------
 Rear pins: GND; Front Pins: Unit Select 1-2-3

   +----------+-----------------------+
   | SCSI ID  |        Jumpers        |
   |          |  3    |  2    |  1    |
   +----------+-------+-------+-------+
   |    0     | OPEN  | OPEN  | OPEN  |
   |    1     | OPEN  | OPEN  | CLOSED|
   |    2     | OPEN  | CLOSED| OPEN  |
   |    3     | OPEN  | CLOSED| CLOSED|
   |    4     | CLOSED| OPEN  | OPEN  |
   |    5     | CLOSED| OPEN  | CLOSED|
   |    6     | CLOSED| CLOSED| OPEN  |
   |    7     | CLOSED| CLOSED| CLOSED|
   +----------+-------+-------+-------+


 6 Sync Spindle
 --------------
 Pinset 6, front pin (Sync Spindle signal) is sync output in Master
 mode, or sync input in Slave mode. Pinset 6 has no effect if Sync
 Mode is disabled. Refer to Mode Page 04H. Do not short this pinset.

 Pinset 6, rear pin, provides a ground connection for external
 cabling.


 9  Auto Spin-up
 ---------------
 9 OPEN   Drive will not spin up until Initiator sends Start Unit
          command
 9 CLOSED Drive will spin up automatically at Power-On


 10 Parity
 ---------
 10 OPEN   Inhibit parity checking
 10 CLOSED Enable parity checking


 11 SDTR
 --------
 11 OPEN   Inhibit drive Initiation of SDTR message
 11 CLOSED Enable drive Initiation of SDTR message at Power-On and
           Reset.


 12 Unit Attention
 -----------------
 12 OPEN   Enable Unit Attention
 12 CLOSED Inhibit Unit Attention


 13  Write Protect
 -----------------
 OPEN   Drive looks at Mode Page Header and responds accordingly;
        default = NOT write protected
 CLOSED Drive is forced into the Write Protect mode


 14  Reserved
 ------------
 MUST BE OPEN!



**********************************************************************
                      I   N   S   T   A   L   L
**********************************************************************
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.)


