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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