
3 2 4 3   D           C A P R I C O R N    MICROPOLIS
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/HH               Cylinders    4097|     |     |
Capacity form/unform  4351/ 5071 MB        Heads          19|     |     |
Seek time   / track   8.5/ 1.5 ms          Sector/track     |     |     |
Controller           SCSI2 DI/FAST         Precompensation
Cache/Buffer           512 KB SEGMENTED    Landing Zone
Data transfer rate          MB/S int       Bytes/Sector      512
                     10.000 MB/S ext
Recording method     RLL                            operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         5 50    |    -40 65
Power: sleep              W     Humidity     %        10 90    |     10 95
       standby            W     Altitude    km    -0.061  3.048| -0.305 15.240
       idle          14.0 W     Shock        g         5       |     60
       seek          17.0 W     Rotation   RPM      7200
       read/write         W     Acoustic   dBA        37
       spin-up            W     ECC        Bit   126,REED SOLOMON
                                MTBF         h    1000000
                                Warranty Month        60
Lift/Lock/Park     YES          Certificates                                  

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MICROPL. 3243 CAPRICORN  PRELIMINARY PRODUCT DESCRIPTION 138008 REV. 1

  +---------------------------------------------------------+
  |                                              W2         |XX
  |                                          W1+-+          |XX
  |                                          W3| |          |XX
  |                                          W4+-+          |XX
  |                                                         |XX J1
  |                                            +-+ID0       |XX
  |                                            | |ID1       |XX
 ++ LED                                        | |ID2       |XX
 ++                                            +-+RESERVED  |XX
  XX 27                                                     |XX
  XX                                                        |XX
  XX                                                        |XX
  XX Option Jumper                                          |XX
  XX Block                                                  |XX1
  XX                                    COMPONENT SIDE      |XX
  XX                                    NO. 138032          |XX J1A
  | 1                                                       |XX
  +---------------------------------------------------------+  1



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                      J   U   M   P   E   R   S
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MICROPL. 3243 CAPRICORN  PRELIMINARY PRODUCT DESCRIPTION 138008 REV. 1

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

 x = Factory default


 Option Jumper Block
 -------------------

             +--+--+--+--+--+--+--+--+--+--+--+--+--+--+
  LED+-+   - |27|25|23|21|19|17|15|13|11|09|07|05|03|01|
  ---+-+-----+  |  |  |  |  |  |  |  |  |  |  |  |  |  +-------
           + |28|26|24|22|20|18|16|14|12|10|08|06|04|02|
             ++-++-++-++-++-++-++-++-++-++-++-++-++-++-+
   RESERVED --+  |  |  |  |  |  |  |  |  |  |  |  |  +-- Remote LED
   Key 2 NC -----+  |  |  |  |  |  |  |  |  |  |  +----- ID0
      SSYNC --------+  |  |  |  |  |  |  |  |  +-------- ID1
      MSYNC -----------+  |  |  |  |  |  |  +----------- ID2
   Key 1 NC --------------+  |  |  |  |  +-------------- RESERVED
        PTY -----------------+  |  |  +----------------- SP0
         WP --------------------+  +-------------------- SP1


 Option Jumper Block Pin Assignments
 -----------------------------------
 +---+---------------+---+--------------+
 |Pin| Signal Name   |Pin|Signal Name   |
 +---+---------------+---+--------------+
 | 1 |Remote LED     | 2 |Remote LED +5V|
 +---+---------------+---+--------------+
 | 3 |GROUND         | 4 |ID0           |
 +---+---------------+---+--------------+
 | 5 |GROUND         | 6 |ID1           |
 +---+---------------+---+--------------+
 | 7 |GROUND         | 8 |ID2           |
 +---+---------------+---+--------------+
 | 9 |GROUND         |10 |RESERVED      |
 +---+---------------+---+--------------+
 |11 |GROUND         |12 |SP0           |
 +---+---------------+---+--------------+
 |13 |GROUND         |14 |SP1           |
 +---+---------------+---+--------------+
 |15 |GROUND         |16 |WP            |
 +---+---------------+---+--------------+
 |17 |GROUND         |18 |PTY           |
 +---+---------------+---+--------------+
 |19 |N/C            |20 |KEY 1         |
 +---+---------------+---+--------------+
 |21 |GROUND         |22 |MSYNC         |
 +---+---------------+---+--------------+
 |23 |GROUND         |24 |SSYNC         |
 +---+---------------+---+--------------+
 |25 |N/C            |26 |KEY 2         |
 +---+---------------+---+--------------+
 |27 |RESERVED       |28 |RESERVED      |
 +---+---------------+---+--------------+


 Single-Ended Configuration Options
 ----------------------------------

 SCSI ID
 -------
 NOTE:
 There are two identical groups of address jumpers on the Device
 Electronics board; use either group for address selection but not
 both at the same time.

   +----------+-----------------------+ Up to eight devices (the host
   | SCSI ID  |        Jumpers        | and seven targets) can be
   |          | ID2   | ID1   | ID0   | attached to the SCSI Bus.
   +----------+-------+-------+-------+
   |    0     | OPEN  | OPEN  | OPEN  | ID jumpers ID0, ID1 and ID2
   |    1     | OPEN  | OPEN  | CLOSED| are used to assign one of
   |    2     | OPEN  | CLOSED| OPEN  | eight SCSI ID bits (0-7) to
   |    3     | OPEN  | CLOSED| CLOSED| the drive.
   |    4     | CLOSED| OPEN  | OPEN  |
   |    5     | CLOSED| OPEN  | CLOSED| In multiple-device systems,
   |    6     | CLOSED| CLOSED| OPEN  | each drive must have its own
   | x  7     | CLOSED| CLOSED| CLOSED| unique ID.
   +----------+-------+-------+-------+


 SP0/SP1  Spindle Control Option
 -------------------------------
    SP0 CLOSED
    SP1 OPEN   Spindle motor starts when START UNIT command is
               received.

    SP0 OPEN   (default)
    SP1 OPEN   Spindle motor starts at power-on.


 SP0/SP1  Spindle Delay Option
 -----------------------------
    SP1 CLOSED
    SP0 OPEN   Spindle start-up is delayed based on SCSI ID (12
               seconds per ID).

    SP1 OPEN   (default)
    SP0 OPEN   Spindle motor starts at power on.


 WP  Write Protect Option
 ------------------------
    WP CLOSED  Drive is write protected.
    WP OPEN    Drive is not write protected. (default)


 PTY  Bus Parity Check Option
 ----------------------------
    PTY CLOSED  Drive neither generates nor detects parity.
        OPEN    Drive generates parity and has parity detection
                enabled. (default)


 W1/W2/W3  Bus Termination Power Option
 --------------------------------------
     +-----+  +-----+  +-----+  +-----+
    W1 xxx |  | o X W2 | o o |  | o o |
     | o o |  | o x |  | xxx W3 | o o |
     | o o |  | o o |  | o o |  | xxx W4
     +-----+  +-----+  +-----+  +-----+

 W1  CLOSED (default)
     Drive provides terminator power.

 W2  CLOSED
     Host system provides terminator power (via J1 pin 26).

 W3  CLOSED
     Drive provides terminator power (via J1, pin 26) to the BUS.


 W4 Interface Termination
 ------------------------
   W4  INSTALLED  Drive is not terminated
  x    OMITTED    Drive is terminated.


 Spindle Synchronization
 -----------------------
 The Rotational Position Locking field (MODE SELECT command, Page Code
 04h) is used to specify spindle synchronization operation.

 Unsynchronized: If the drive is set to Unsynchronized (RPL = 00b), it
 ignores the SLAVE SYNC signal.

 Slave: If the drive is set to Slave (RPL = 01b), it does not generate
 the MASTER SYNC signal or the SLAVE SYNC signal but synchronizes its
 index to the SLAVE SYNC signal supplied by an external source.

 Master: If the drive is set to Master (RPL = 10b), it generates the
 SLAVE SYNC output signal for use directly by the slave drives.

 Master Control: If the drive is set to Master Control (RPL = 11b), it
 generates the MASTER SYNC signal. This output is used by the
 controller to generate the SLAVE SYNC signal for the slaves.



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MICROPL. 3243 CAPRICORN  PRELIMINARY PRODUCT DESCRIPTION 138008 REV. 1

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

 Recommended mounting orientation
 --------------------------------

            horizontally             vertically
         +-----------------+   +--+             +--+
         |                 |   |  +-----+ +-----+  |
         |                 |   |  |     | |     |  |
       +-+-----------------+-+ |  |     | |     |  |
       +---------------------+ |  |     | |     |  |
                               |  |     | |     |  |
                               |  |     | |     |  |
                               |  +-----+ +-----+  |
                               +--+             +--+

 Dimensions and Mounting
 -----------------------
 The drive uses industry-standard mounting For 3 1/2-inch full-height
 Winchester disk drives.

 Recommended orientation is vertical on either side, or horizontal
 with the Device Electronics board down; other mounting orientations
 may be used.

 No matter what mounting orientation is used, Micropolis specifies
 that the maximum HDA casting temperature not exceed 60*C (140*F).


 Mounting Screws
 ---------------
 3 per side 6-32 UNC-2B
 4 on bottom 6-32 UNC-2B

 Caution: The mounting screws must be selected so that they do not
 penetrate the bottom mounting holes by more than 0.20 inches or the
 side mounting holes by more than 0.156 inches.

 Screws that are too long will short to PCBA.


 SINGLE-ENDED Interface Electrical Characteristics
 -------------------------------------------------
 Interface control and status signals are digital (open collector TTL)
 using industry-standard transmitters and receivers which provide
 a terminated, single-ended system.

 For active termination, the assigned signals are terminated with 110
 ohms to +2.85V (nominal). For passive termination, the assigned
 signals are terminated with 220 ohms to +5V (nominal) and 330 ohms to
 ground. All signals use open-collector or tri-state drivers.

 Single-ended drivers and receivers allow a maximum cable length of
 six meters (primarily for connection within a cabinet).

 Signal transmission requires a single 50-conductor (flat or
 twisted-pair) cable. A characteristic impedance of 100 ( 10%) ohms
 is recommended.

  a. Input Characteristics

     Each of the drive's signal receivers has the following
     characteristics when measured at the interface connector.

   1) Low-level input voltage = (Signal true) 0.0 VDC to 0.8 VDC

   2) High-level input voltage = (Signal false) 2.0 VDC to 5.25 VDC

   3) Low-level input current = -0.4 milliamps at 0.5 VDC

   4) High-level input current = 0.1 milliamps at 2.7 VDC

   5) Minimum input hysteresis = 0.2 VDC

   6) Maximum input capacitance = 25 pF


  b. Output Characteristics

     Each driven signal has the following characteristics when
     measured at the interface connector.

   1) Low-level input voltage = 0.0 VDC to 0.5 VDC (signal assertion)

   2) High-level input voltage = 2.5 VDC to 5.25 VDC (signal negation)

   3) Minimum driver output capability = 48 milliamps (sink) at 0.5VDC


  c. Terminator Power (TERMPWR at Pin 26)

     Terminator Power has the following requirements:

   V(TERM) = 4.25 VDC to 5.25 VDC

   800 milliamps minimum source drive capability, with 1.0 amp
   recommended current limiting (e.g., a fuse).

   1.0-milliamp maximum bus loading (except for the purposes of
   providing power to an internal terminator).

 Keyed connectors are provided to prevent accidental grounding or
 misconnection of terminator power.


 Signal Connector J1
 -------------------
 J1 is a 50-pin connector. The signals on J1 include the 8-bit SCSI
 bus and various control and handshaking lines.

 Recommended Cable: 3M Scotchflex 3365/50 or equivalent.
 Mating connector:  3M P/N 3425-3000 or equivalent.


 J1A Power Connector
 -------------------
 J1A is a 4-pin connector used to supply +5V and +12V to the drive.

 Recommended mating connector: AMP 1-480424-0 or equivalent
 Pins: AMP 350078-4
 Suggested wire size: 18 AWG (minimum) for all pins.

  pin 1    +12 VDC
  pin 2    +12 Volts Return
  pin 3    + 5 Volts Return
  pin 4    + 5 VDC


 2-pin Connectors (Remote LED, Spindle Sync, etc.)
 -------------------------------------------------
 Recommended mating connectors: Dupont 69305-002 or equivalent
 Pins: Dupont 77138-001
 Suggested wire size: 26-30 AWG for all pins


 SCSI ID Connector (6-pin)
 -------------------------
 Recommended mating connector: Dupont 90311-006 or equivalent
 Pins: Dupont 77138-001
 Suggested wire size: 26-30 AWG for all pins


 Multiple-Drive Systems
 ----------------------
                                             Drive #1
  +------HOST------+                 +-----------------+
  | +-----------+  +--+-SCSI-BUS-----+ J1              |
  | |Terminators|  |  |       +------+ J1A             |
  | +-----------+  |  |       |      +-----------------+
  |                |  |       |
  +----------------+  |       |              Drive #2
                      |       |      +-----------------+
                      +-------+------+ J1              |
                      |       o------+ J1A             |
                      |       |      +-----------------+
                      |       |
                      |       |              Drive #3
                      |       |      +-----------------+
                      +-------+------+ J1              |
                      |       o------+ J1A             |
                      |       |      +-----------------+
                      |       |
                      |       |              Drive #4
                      |       |      +--------------+--+
                      +-------+------+ J1           |T |
                              o------+ J1A          +--+
           ---DC-VOLTAGES-----+      +-----------------+

 T = TERMINATORS

 Terminators are installed ONLY in the last physical drive in the
 control chain.


 Temperature Measurement
 -----------------------
 Micropolis specifies the maximum HDA casting temperature to be 60*C
 (140*F). Not exceeding this temperature will ensure that the head-to-
 media interface never exceeds its temperature limit.

 If the HDA casting temperature measurement cannot be made, the
 ambient air temperature around the drive must be kept at or below
 50*C (122*F).



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                      F   E   A   T   U   R   E  S
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MICROPL. 3243 CAPRICORN  PRELIMINARY PRODUCT DESCRIPTION 138008 REV. 1


 Description
 -----------
 This Product Description describes the Micropolis model 3243 (8-bit,
 single-ended) Rigid Disk Drive. The drive is a member of the
 CAPRICORN family of high-performance, 3 1/2-inch, full-height Rigid
 Disk Drives.

 These drive provides OEMs with random-access, high-speed, data
 storage and meet the needs of diverse applications environments.

 The drive is compatible with the "ANSI CCS" version and the "SCSI-2"
 version of the industry-standard Small Computer System Interface
 (SCSI) specification.


 3243 AV
 -------
 The 3243 is available in an AV version. AV drives are specifically
 designed for enhanced digital audio and video performance in
 applications such as multi-media, desktop publishing, digital video
 editing, and video servers. AV drives provide:

 - Predictable, sustained data rates, allowing reduction in size of
   system buffers needed thereby reducing system cost.

 - Fast command processing for reduced overhead.

 - Advanced cache management for improved overall performance.

 - Fast ECC which ensures maximum data integrity without interrupting
   the data stream.


 DIFFERENTIAL INTERFACE IS OPTIONAL.

 Some Features of the Drive
 --------------------------
 - Positive media protection is achieved during spin down (due to a
   STOP UNIT command or power off) by automatically retracting and
   locking the positioner in a data-free landing zone.

 - N-Segment Read-Ahead algorithm improves read performance by
   allowing many accesses to be serviced from the cache buffer (512K
   or optional 2MB).

 - Optional, Write-Behind Caching provides dramatic improvement in
   write performance by appending multiple write commands per disk
   revolution.

 - In-Line Defect Management (sector slipping) provides maximum
   throughput.

 - Data Integrity is ensured with CRC through the buffer, 126-bit
   Reed-Solomon ECC on-the-fly, and automatic retries using servo and
   data strobe offsets.


 Media Defects
 -------------
 Media defects are physical characteristics of the media which result
 in repetitive read errors when a functional drive is operated within
 specified operating conditions.

 At the time of manufacture, a media test system evaluates every
 drive and identifies each media defect location. The defective
 areas are identified by head address (HD), cylinder address (CYL),
 and number of clocks from Index (CFI).

 The list of manufacturer-found defects is stored on the drive in a
 reserved, write-protected area accessible by the SCSI controller.
 This list is known as the MDL (Manufacturers Defect List) or PList
 (Primary Defect List).

 A printed listing of the defects is also shipped with each drive. The
 entries it contains can be mapped out (reassigned) automatically at
 format control parameter bits.


 Seek Time
 ---------

                                          | 3243   |
        ----------------------------------+--------+
        Track-to-Track  read   msec. typ. |   1    |
                        write  msec. typ. |   2    |
                       Average msec. typ. |   8.5  |
                               msec. max. |  20    |
        Latency                msec. avg. |   4.17 |
        ----------------------------------+--------+


 Recording Media
 ---------------
 Aluminium disks, each 95 millimeters (3 1/2 inches) in diameter, are
 mounted on the spindle assembly. The recording surface on each disk
 is a thin coating of magnetic material, with a carbon over-coat to
 protect that surface.


 Air Filtration System
 ---------------------
 The drives are designed to provide contamination control within the
 HDA throughout the life of the drive with zero maintenance.

 Air within the HDA is continuously recirculated and filtered through
 a high efficiency filter. Air is ducted to and from the filter for
 maximum pressure recovery and filter efficiency. Air within the HDA
 may only enter the drive through a high-efficiency breather filter.


 Braking
 -------
 The heads contact an area of the disk surface which is not used for
 data storage when the disk are not spinning and during start and
 stop cycles. Dynamic braking is used to stop the spindle quickly.


 Adjustments and Maintenance
 ---------------------------
 The drive requires no adjustments or periodic maintenance;
 additionally, no mechanical adjustments are required to prepare a
 system for handling or shipment.


 Field-Replaceable Components
 ----------------------------
 The concept of repair by replacement of complete functional
 components is utilized in the drive, resulting in an MTTR of less
 than 15 minutes.


 MICROPOLIS AV SERIES
 --------------------
 Micropolis AV Series disk drives are engineered specifically for
 multi-media, high-end graphics, and digital video/audio applications.
 With advanced cache management, internal housekeeping improvements,
 and enhanced error handling, AV drives provide the highest minimum
 sustained data rate in their class. AV drives are designed to provide
 a maximum sustained uninterrupted data rate. Unlike data processing
 drives, AV drives guarantee a "worst case" data rate performance.
 This means that with the buffer empty, the maximum access time
 (including error handling) is no more than 30 milliseconds.


