
1 3 2 5    MICROPOLIS
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 5.25"/FH              Cylinders    1024|     |     |
Capacity form/unform    69/   85 MB        Heads           8|     |     |
Seek time   / track  28.0/ 6.0 ms          Sector/track   33|     |     |
Controller           MFM / ST506           Precompensation 65535
Cache/Buffer               KB              Landing Zone     1023
Data transfer rate    0.625 MB/S int       Bytes/Sector      256
                      0.625 MB/S ext
Recording method     MFM                            operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C        10 46    |    -40 65
Power: sleep              W     Humidity     %        10 80    |     10 80
       standby       28.0 W     Altitude    km    -0.061  3.048| -0.305 15.240
       idle               W     Shock        g         3       |     50
       seek          38.0 W     Rotation   RPM      3600
       read/write         W     Acoustic   dBA        51
       spin-up            W     ECC        Bit
                                MTBF         h      35000
                                Warranty Month
Lift/Lock/Park     NO           Certificates                                  

**********************************************************************
                        L   A   Y   O   U   T
**********************************************************************
MICROPL. 1320 SERIES  PRODUCT DESCRIPTION 101400 REV. B-3

  +---------------------------------------------------------+
  |                                                         |
  |                                      Interface   +--+   |X1 J1
  |  COMPONENT SIDE                      Terminator  |  |RN1|XX
  |                                                  |  |   |XX
  |                                                  +--+   |XX
  |                                                         |XX
  |                                                         |XX
  |                                               W1 +-+    |XX
  |                                               W2 | |    |
  |                                               DS1| |    |X1
  |                                               DS2| |    |XX J2
  |                                               DS3| |    |XX
  |                                               DS4| |    |XX
  |                                                  +-+    |XX
  |                                                         |XX
  |                                                         |
  |                                                         |
  +---------------------------------------------------------+






     +--------------------------------------+
     |       ++J4                           |
     |       ++                             |
     |          ++J5                        |
     |  J3 Power++                          |
     |  XXXXXX1                             |
     |      J2             J1               |
     |  XXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX  |
     +--------------1--------------------1--+
      Data Transfer    Control Signal



**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
MICROPL. 1320 SERIES  PRODUCT DESCRIPTION 101400 REV B-3

 Jumper setting
 ==============

 Drive Select
 ------------
 The drive-select jumpers are identified as DS1, DS2, DS3 and DS4.
 Only one drive-select jumper is installed on a drive, and it is
 addressed as drive 1 at the factory. Each Drive Select interface line
 connects the correspondingly addressed drive to the host controller/
 formatter. In multiple-drive systems, each drive must have its own
 unique address.

 Terminator RN1 provides proper termination for the interface lines.
 When daisy-chaining multiple 1320 disk drives, the terminator is
 installed only in the last drive on the daisy chain.


 W1 is used for write-fault latching; W2 is always installed.


 W1  Write Fault
 ---------------
 When this signal is true, it indicates that a fault condition exists
 at the drive. Writing is inhibited until the condition no longer
 exists.

    W1  CLOSED  Faults are latched in the drive until they are cleared
                by a select-to-deselect transition that lasts no less
                than 50 microseconds in each state.
        OPEN    Fault conditions are not latched.

 A Write Fault caused by an out-of-tolerance DC voltage is reset
 automatically when the voltage is restored to nominal.


 J3   DC Power and pin connector assignments
 -------------------------------------------
      +------------+   pin 1    +12 VDC
      | 4  3  2  1 |   pin 2    +12 Volts Return
      +------------+   pin 3    + 5 Volts Return
                       pin 4    + 5 VDC


 J4/J5 Ground Connectors
 -----------------------
 1/4-inch spade lugs J4 and J5 are provided for grounding; system
 characteristics determine the proper ground connection.



**********************************************************************
                      I   N   S   T   A   L   L
**********************************************************************
MICROPL. 1320 SERIES  PRODUCT DESCRIPTION 101400 REV. B-3

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

 Drive mounting
 --------------

     horizontally             vertically
   +-----------------+   +--+             +--+ +------------------+
   |                 |   |  +-----+ +-----+  | |                  | x
   |                 |   |  |     | |     |  | x+----------------+x
 +-+-----------------+-+ |  |     | |     |  | ||x              x||
 +---------------------+ |  |     | |     |  | ||  x          x  ||
                         |  |     | |     |  | ||    x      x    ||
      x           x      |  |     | |     |  | ||      x  x      ||
 +------x------x-------+ |  +-----+ +-----+  | ||       xx       ||
 +-+------x--x-------+-+ +--+             +--+ ||     x    x     ||
   |       xx        |                         ||   x        x   ||
   |     x    x      |                         || x            x ||
   +---x--------x----+                         |x                x|
     x            x                           x++----------------++x


 Dimensions and Mounting
 -----------------------
 Recommended orientation is vertical on either side, or horizontal
 with the Device Electronics board down; other mounting orientations
 may be used provided the ambient air temperature around the drive is
 kept at or below 50*C (122*F).

 Inasmuch as the drive frame acts as a heat sink to dissipate heat
 from the unit, the enclosure and mounting structure should be
 designed to allow natural convection of heat around the HDA and outer
 frame. If the enclosure is small or natural convetion is restricted,
 a fan may be required.

 The 1350 Series uses industry-standard mounting 5 -inch Winchester
 disk drives (the same as for 5 -inch flexible disk drives).


 Mounting Screws
 ---------------
 2 per side 6-32 UNC-2B x 0.25 deep.
 4 on bottom 6-32 UNC-2B x 0.25 deep.


 Control Signal Connector J1
 ---------------------------
 J1 is a 34-pin board-edge connector. The signals on this connector
 control the drive and transfer drive status to the host controller.

 Recommended Cable: 3M Scotchflex 3365/34
 Mating Connector:  AMP 88373-3 (key slot between pins 4 and 6)


 Data Transfer Connector J2
 --------------------------
 J2 is a 20-pin board-edge connector. The signals on this connector
 contain read or write data.

 Recommended Cable: 3M Scotchflex 3365/20
 Mating Connector:  AMP 88373-6 (key slot between pins 4 and 6)


 DC Power Connector J3
 ---------------------
 J3 is a 4-pin, keyed AMP MATE-N-LOCK Connector on the Motor Control
 board. This connector supplies DC power (+5V and +12V) to the drive.

 Mating Connector: AMP 1-480424-0
             Pins: AMP 350078-4

 Suggested Wire Size: 18 AWG


 Ground Connectors J4/J5
 -----------------------
 1/4-inch spade lugs J4 and J5 are provided for grounding; system
 characteristics determine the proper ground connection.

 Mating Connector: AMP 62187-1 or equivalent.


 Daisy-Chaining the 1320 Drive
 ------------------------------

   Host Controller
   +------------+                  +---------------+
   |            +--CONTROL---o-----+ J1   Drive #1 |
   |            |  +---------+-----+ J2            |
   |            |  |         |  +--+ J3  J4/J5     |
   |            |  |         |  |  +-------+-------+
   |            |  |         |  |          +-------------+
   |            |  |         |  |  +---------------+     |
   |            |  |         o--+--+ J1   Drive #2 |     |
   |            |  |  +------+--+--+ J2            |     |
   |            |  |  |      |  o--+ J3  J4/J5     |     |
   |            |  |  |      |  |  +-------+-------+     |
   |            |  |  |      |  |          +-------------o
   |            |  |  |      |  |  +---------------+     |
   |            |  |  |      o--+--+ J1   Drive #3 |     |
   |            |  |  |   +--+--+--+ J2            |     |
   |            |  |  |   |  |  o--+ J3  J4/J5     |     |
   |            |  |  |   |  |  |  +-------+-------+     |
   |            +--+  |   |  |  |          +-------------o
   |      DATA  +-----+   |  |  |  +---------------+     |
   |            +---------+  +--+--+ J1   Drive #4 |     |
   |            +---------------+--+ J2       +----+     |
   |            |               o--+ J3  J4/J5| RN1|     |
   +------------+               |  +-------+--+----+     |
                                |          |             |
       DC VOLTAGES -------------+          |             |
            GROUND ------------------------o-------------+


 Interface Terminator RN1 is installed ONLY in the last physical
 drive in the control chain.


 Up to four 1320 drives may be connected to a single controller/
 formatter. Control and status signals on J1 are transmitted via
 standard, daisy-chain interconnection. Read/Write data signals on J2
 are transmitted via radially connected data-transfer lines.


 Interface Electrical Characteristics
 ------------------------------------
 The signals at Control Signal Connector J1 control the drive and
 transfer drive status to the host controller. The signals are low-
 true at the interface, high-true into drivers and out of receivers,
 and have the following logic levels:

 True  = 0.0 VDC to 0.4 VDC @  = 48 mA (maximum)
 False = 2.5 VDC to 5.25 VDC @ = 250 uA (open collector)


 Adjustments and Maintenance
 ---------------------------
 The 1320 Series of drives requires no adjustments or periodic
 maintenance. Additionally, no mechanical adjustments are required to
 prepare the drives for handling or shipment.


 Field-Replaceable Components
 ----------------------------
 The concept of repair by replacement of complete functional
 components is utilized in the 1320 Series, resulting in an MTTR of
 less than 15 minutes.


 Air-Filtration System
 ---------------------
 Air is circulated throughout the clean area by disk rotation-induced
 flow. A ducted air-filtration system draws the air through a filter.
 The sealed area breathes to the outside via another filter for
 pressure equalization.


 Drive Motor
 -----------
 Spindle rotation as provided by a quiet, direct-coupled, brushless DC
 motor. Switching information for the electronic commuator is supplied
 by three Hall-effects sensors mounted within the drive-motor
 assembly.



**********************************************************************
                      F   E   A   T   U   R   E  S
**********************************************************************
MICROPL. 1320 SERIES  PRODUCT DESCRIPTION 101400 REV. B-3

 Micropolis 1320 Series high-performance, 5 -inch Winchester Disk
 Drives provide OEMs with high-speed, high-capacity, random-access
 storage. They are fully compatible with the industry-standard ST506/
 ST412 interface and are designed to meet the needs of diverse
 applications environments.


 Write Precompensation
 ---------------------
 It is recommended that write precompensation not be used. If the
 system and/or controller is such that percompensation cannot be
 turned off, it should be set to a cut in at trach 1024, or the
 highest possible track.


 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. A single defect is defined as being
 less than two bytes long. A multiple defect is defined as two bytes
 longer, or as a track with more than one single defect.

 At the time of manufacture, a media test system evaluates each 1320
 drive and identifies the location of each media defect. The defects
 are logged on a label affixed to the drive. Defective areas are
 identified by cylinder, head address, and number of Bytes from Index.

 The defect information for each surface is written onto the relevant
 surface in a redundant manner such that the same information is
 written in Sector 0 of Track 0; in Sector 0 of the maximum track
 (i.e. the highest track); and in Sector 0 of the maximum track minus
 eight tracks.

 Micropolis specifies that all 1320 Series disk drives will have no
 more than one defect per megabyte of unformatted capacity. Addition-
 ally, Cylinder 0 shall be defect-free at the time of shipment.


 Seek Time
 ---------

                                          | 1320   |
        ----------------------------------+--------+
        Track-to-Track         msec. typ. |   6    |
                       Average msec. typ. |  28    |
        One-Third Stroke       msec.      |  31    |
                               msec. max. |  62    |
        Latency                msec. avg. |   8.33 |
                 Nominal       msec. max. |  16.67 |
        ----------------------------------+--------+
 Average Seek Time assumes step pulses at a rate of 1 pulse per 20
 usec. or faster.


