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- MICROPOLIS 1528 DISK DRIVE
- SPECIFICATIONS
-
- Model Number
- Unformatted Capacity: 1528-15
-
- Total Mbytes -------------- 1535 -----------------
- Disk Platters ------------------ 8 -----------------
- Read/Write Heads ----------------- 15 -----------------
- Cylinders --------------- 2106 -----------------
- Bytes per track -------------- 48608 -----------------
-
- Formatted Capacity
-
- Total Mbytes --------------- 1354 -----------------
- Bytes per Sector ---------------- 512 -----------------
- Sectors per Track ---------------- 84 -----------------
-
- PC Setup
-
- When using SCSI in a PC, the most common method is to run your
- setup program and define No Drives Present. The SCSI Host Adapter
- will automatically self-configure on power-up. To install the
- drive, follow the manufacturer's instructions to use the on-board
- BIOS routine or software that was supplied with the Host Adapter.
-
- Performance Specifications
-
- Seek Time Track-to-Track 4 msec
- (including settling time) Average 14.5 msec
- Maximum 33 msec
-
- Average Rotational Latency 8.33 msec
- Rotational Speed 3600 rpm +/- 0.5%
-
- Data Transfer Rate at Interface
- Synchronous 4.8 Mbytes/sec
- Asynchronous 1.6 Mbytes/sec
-
- Internal Data Rate 23.33 Mbits/sec
-
- MTBF 150,000 hours
- Positioner Fully balanced rotary voice coil
- Parking Automatic park and lock
-
- General Functional Specifications
-
- Interface SCSI-2
-
- Supports Common Command Set YES
- SCSI-2 YES
- Write Precompensation Start Cylinder 2100
- Reduced Write Current Start Cylinder 2100
- Landing Zone 2100
- Mounting Plane Any orientation
-
- Power Requirements
-
- +12V +/-5% 2.0 A Avg
- (4.35A max during start-up)
- +5V +/-5% 2.0A avg
-
- Power dissipation, typical 24 Watts
-
-
- 7. Drive Addressing and Interface Termination
-
-
- _ID2
- | _ID1
- | | _ID0
- | | | Pin 1
- J2 | | | J1 | J3
- ___________ __________________________ ________
- _| | | | | |
- | |___________|_ |__________________________|___|________|
- | .. .. |
- | W5 W4 RN9 W2 |
- | W1 W11 |
- | |
- | W28 |
- | |
- | |
- | |
- | |
- | |
- | Component Side |
- | |
-
-
- ID0, ID1, ID2 SCSI Address Jumpers
- The SCSI ID (drive address) jumpers are identified as ID0, ID1,
- and ID2. ID selection is binary, as shown in the table below.
-
- SCSI Jumpers
- Address ID2 ID1 ID0
- ------- --- --- ---
- 0 out out out
- 1 out out in
- 2 out in out
- 3 out in in
- 4 in out out
- 5 in out in
- 6 in in out
- 7 in in in
-
- For multiple drive installations, on one Host Adapter, each drive
- must have a unique address. Drives are configured as SCSI ID 7
- at the factory.
-
- RN9 Interface Terminator
- The Interface Terminator factory installed at RN9 provides
- proper termination for the interface lines. When daisy-chaining
- multiple drives, leave the terminator installed only in the last
- physical drive (or drives) on the daisy chain cable; remove the
- terminator from each of the other drives (or the host computer).
-
- W1, W2, Terminator Option
- W1 and W2 select the source of terminator power (+5V) for the
- interface terminator. If a jumper is installed at W1(the factory
- default configuration), and no jumper is installed at W2 the
- drive provides terminator power. This configuration is used
- for PC/AT applications. If a jumper is on W2 the host adapter
- will supply terminator power. If a jumper is installed at W2 and
- W11, and no jumper is installed at W1 the drive provides
- terminator power to it's on-board terminators and also to the
- SCSI bus via interface connector J1, pin 26.
-
- W11 Bus Option
- W11 allows the drive to supply interface terminator power to the
- SCSI Bus. If W11 is not installed and W1 is jumpered (the factory
- default configuration), the drive does supply SCSI bus interface
- terminator power. W11 should not be installed for PC/AT
- applications.
-
- W5 Spindle Option
- Selects the spindle control option. If W5 is jumpered, the
- drive must wait for a Start Spindle command (after power is
- applied) to start the spindle motor. If W5 is not installed
- (the factory default configuration), the drive automatically
- starts the spindle motor at power-on. W5 is not installed for
- PC/AT installations.
-
- W4 Bus Parity Option
- W4 selects the parity check option. If W4 is installed, the drive
- neither generates nor detects parity. If W4 is not installed (the
- factory default configuration), the drive generates parity and
- enables parity detection. W4 is usually not installed for PC/AT
- applications. Verify the correct configuration required by your
- Host Adapter.
-
- W28 Ground Options
- W28(only implemented on Rev B and later boards) is used to
- connect the drive's logic ground to frame ground. When at jumper
- is installed at W28, frame ground is connected to logic ground.
-
- When a jumper is not installed at W28 (the factory default
- configuration), frame ground is not connected to logic ground.
- For PC/AT applications, is a jumper should be installed at W28.
-