Hard Drive: MICROPOLIS: 1304 42MB 5.25"/FH MFM ST412
1 3 0 4 MICROPOLIS
NO MORE PRODUCED Native| Translation
------+-----+-----+-----
Form 5.25"/FH Cylinders 830| | |
Capacity form/unform 42/ MB Heads 6| | |
Seek time / track 30.0/ 6.0 ms Sector/track 17| | |
Controller MFM / ST412 Precompensation 65535
Cache/Buffer KB Landing Zone 829
Data transfer rate 0.625 MB/S int Bytes/Sector 512
0.625 MB/S ext
Recording method MFM operating | non-operating
-------------+--------------
Supply voltage 5/12 V Temperature *C |
Power: sleep W Humidity % |
standby W Altitude km |
idle W Shock g |
seek W Rotation RPM 3600
read/write W Acoustic dBA
spin-up W ECC Bit
MTBF h 20000
Warranty Month
Lift/Lock/Park YES Certificates
Layout
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
Jumpers
MICROPL. 1300 SERIES JUMPER SETTING
Jumper Setting
==============
J1 J2 Power
+----+ +------------------+ +------------+ +--------+
| | |1 | |1 | | X X |
| +-+ +---+ +-+W7 W8 |
| W2 Drive Select |
| xxxxxxxxxx X X X X X X |
| RN1 W1 1 2 3 4 |
| |
| |
| (COMPONENT SIDE) |
Drive Select Jumpers
--------------------
Only one Drive Select jumper is installed on a drive. For every
drive in a PC/AT installation, move the jumper from DS1 to DS2 (the
special twisted interface cable that is generally used, takes care of
assigning a unique address to each drive). Some other systems may
require that each drive be jumpered to a unique address.
The drives are shipped with the jumper installed at DS1.
+------+---------------------------+
| | Pins |
|Drive | 1 |2 |3 |4 |
+------+------+------+------+------+
| 1 |CLOSED|OPEN |OPEN |OPEN |
+------+------+------+------+------+
| 2 |OPEN |CLOSED|OPEN |OPEN |
+------+------+------+------+------+
| 3 |OPEN |OPEN |CLOSED|OPEN |
+------+------+------+------+------+
| 4 |OPEN |OPEN |OPEN |CLOSED|
+------+------+------+------+------+
W1 Write Fault Latch
--------------------
W1 is the Write Fault Latch. If W1 is present and the drive
encounters a write fault, all writing to the drive is inhibited
until after the drive has been deselected. If W1 is absent, fault
conditions are not latched. Drives are shipped with a jumper
installed at W1; remove it for PC/AT installations.
W2 and W8 are always installed.
W7 Never install.
RN1 Interface Terminator
------------------------
The Interface Terminator factory installed at RN1 provides proper
termination for the interface lines. When daisy-chaining multiple
1300 drives, leave the terminator in the last physical drive on
the daisy chain cable; remove the terminator from each of the
other drives. In most PC/AT installations, the C: drive is actually
at the end of the cable and should retain the terminator.
Install
-ANY DIREC.
Notes on installation
=====================
Installation direction
----------------------
horizontally vertically
+-----------------+ +--+ +--+
| | | +-----+ +-----+ |
| | | | | | | |
+-+-----------------+-+ | | | | | |
+---------------------+ | | | | | |
| | | | | |
| | | | | |
+---------------------+ | +-----+ +-----+ |
+-+-----------------+-+ +--+ +--+
| |
| |
+-----------------+
The drive will operate in all axis (6 directions).
Features
MICROPL. 1300 SERIES PRODUCT DESCRIPTION
PC Drive Types
--------------
Examine the entries in your drive table and find the type that most
resembles the head and cylinder parameters of the drive without
exceeding the drive parameters. If you are using third-party
installation/partitioning software, follow the instructions included
with the software as it may perform this step automatically.
Performance Specifications
--------------------------
Seek Time (including settling time) Track-to-Track 6 msec
Average 30 msec
Maximum 60 msec
Average Rotational Latency 8.33 msec Rotational Speed 3600 rpm +/- 0.5% Data Transfer Rate 5 Mbits/sec Optimum Step Rate 20 usec or faster (buffered seek) MTBF 20,000 hours Positioner Fully balanced rotary voice coil Parking Automatic park and lock
General Functional Specifications
---------------------------------
Encoding Method: MFM (Modified Frequency Modulation)
(Although these drives may be capable of functioning in an RLL
environment, Micropolis does not certify or warrant them for this
application.)
Sectoring Soft
Write Precompensation Start Cylinder 830*
Reduced Write Current Start Cylinder 830*
Landing Zone 830
Type of Media Plated
Mounting Plane Any orientation
* These are effectively turned off by specifying a non-existent
cylinder. Some systems accomplish this by using a value of "-1"
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