Hard Drive: MICROPOLIS: 4421 AV 2050MB 3.5"/SL SCSI2 FAST

4 4 2 1   A V    MICROPOLIS
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders    4050|     |     |
Capacity form/unform  2050/      MB        Heads           7|     |     |
Seek time   / track   8.8/ 1.1 ms          Sector/track     |     |     |
Controller           SCSI2 SI/FAST/AV      Precompensation
Cache/Buffer               KB              Landing Zone
Data transfer rate    7.200 MB/S int       Bytes/Sector      512
                     10.000 MB/S ext SYNC
Recording method     PRML                           operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C           50    |    -40 65
Power: sleep              W     Humidity     %                 |
       standby            W     Altitude    km                 |
       idle           7.5 W     Shock        g        10       |     60
       seek           8.2 W     Rotation   RPM      5400
       read/write         W     Acoustic   dBA        37
       spin-up            W     ECC        Bit   126BIT REED SOLOMON,ON THE...
                                MTBF         h     650000
                                Warranty Month        60
Lift/Lock/Park     YES          Certificates     AV PERFORMANCE ENHAN,ISO9000 

Layout

MICROPL. 4421AV JUMPER SETTING

  +---------------------------------------------------------+
  |                                                         |XX
  |                                                         |XX
  XX                    Component Side                      |XX
  XX Option             Board No. 134302                    |XX
  XX Jumper                                                 |XX J1
  XX Block                                                  |XX
  XX J2                                                     |XX
  XX                                                        |XX
  | 1                                                       |XX
  |                                                         |XX
 ++                                                         |XX
 ++LED                                                      |XX
  |                                                         |XX
  |                                                         |XX1
  |                                                         |XX
  |                                                         |XX J1A
  |                                                         |XX
  +---------------------------------------------------------+  1

Jumpers

MICROPL. 4421 AV JUMPER SETTING

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
         W4 -----+  |  |  |  |  |  |  |  |  |  |  +----- ID0
         W3 --------+  |  |  |  |  |  |  |  |  +-------- ID1
         W2 -----------+  |  |  |  |  |  |  +----------- ID2
         W1 --------------+  |  |  |  |  +-------------- RESERVED
        PTY -----------------+  |  |  +----------------- SP0
         WP --------------------+  +-------------------- SP1

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

 SCSI ID
 -------
   +----------+-----------------------+ 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  CLOSED (default)
     Drive provides terminator power.

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

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

 W4 Interface Termination
 ------------------------
   W4  INSTALLED  Drive provides termination for the interface lines;
                  i.e., onboard termination is electrically enabled.

  x    OMITTED    Drive does not provide terminatiopn for the inter-
                  face lines; i.e., onboard termination is
                  electrically disabled.

Remote LED
----------
Open Collector output - Used to drive a user-supplied LED to indicate
the drive is active.

General

AV

What is an AV Drive?
--------------------
Today's demanding digital video and audio applications require disk
drives to sustain a pre-determined minimum data transfer rate.
Any interruptions in this data rate are detrimental to AV
applications that require constant delivery of data at 30 frames per
second minimum. In standard drives utilized for data processing
requirements, the error correction and thermal calibration methods
employed are not optimized for continuous delivery of data. These
routine housekeeping tasks will procedure gaps in the data stream as
long as 850 ms, resulting in jumps, gaps, and stutters in motion and
sound when used in most AV applications.

(MICROPOLIS 10/96)