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- MICROPOLIS 1330 SERIES DISK DRIVE
- SPECIFICATIONS
-
- Model Number
- Unformatted Capacity: 1333 1333A 1334 1334A 1335
-
- Total Mbytes 42.7 53.3 64.0 74.7 85.3
- Disk Platters 3 3 4 4 5
- Read/Write Heads 4 5 6 7 8
- Cylinders ------------------ 1024 -----------------
- Bytes per track ---------------- 10,416 -----------------
-
- Formatted Capacity:
-
- Total Mbytes 35.6 44.5 53.4 62.3 71.3
- Bytes per Sector ------------------- 512 -----------------
- Sectors per Track -------------------- 17 -----------------
-
- 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 these 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 28 msec
- Maximum 62 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 25,000 hours
- Positioner Fully balanced rotary voice coil
- Parking Automatic park and lock
-
- General Functional Specifications
-
- Interface ST-506/412
- 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 1024*
- Reduced Write Current Start Cylinder 1024*
- Landing Zone 1024
- Type of Media Oxide
- 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"
-
- Power Requirements
-
- +12V +/-5% 2.0A avg
- (3.9A max during start-up)
- +5V +/-5% 0.9A avg
- Power dissipation, typical 29 Watts
-
- Drive Addressing and Interface Termination
-
- J1 J2
- ____ __________________ ____________ ________
- | | |1| | |1| | | W W |
- | |_| |___| |_| 7 8 |
- | D D D D |
- | TERMINATOR W W S S S S |
- | 1 2 1 2 3 4 |
- | |
- | |
- | (COMPONENT SIDE) |
-
- DS1, DS2, DS3, DS4 Drive Select Jumpers
- The Drive Select jumper locations are identified as DS1, DS2,
- DS3, and DS4. Only one Drive Select jumper is installed on a
- drive. The drives are shipped with the jumper installed at DS1.
- 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 (i.e., different DS numbers).
-
- RN1 Interface Terminator
- The Interface Terminator factory installed at RN1 provides proper
- termination for the interface lines. When daisy-chaining multiple
- 1330 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.
-
- 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 de-selected. 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 is always installed.
-
- W7 is never installed.
-
- W8 is always installed.