MICROPOLIS 1548-15 HARD DISK DRIVE REPAIR, MICROPOLIS 1548-15 SCSI HARD DISK DRIVE REPAIR, SPECIFICATIONS, JUMPERS,
micropolis 1548-15 hard disk drive specifications, Micropolis 1548-15 Hard Disk Drive Specifications, Jumpers,
micropolis 1548-15 hard disk drive repair, Micropolis 1548-15 Hard Disk Drive Repair,
micropolis 1548-15 hard disk drive specs, Micropolis 1548-15 Hard Disk Drive Specs,
micropolis 1548-15 hard disk drive repair, Micropolis 1548-15 Hard Disk Drive Repair Micropolis 1548-15
Specifications



micropolis 1548-15 picture.
micropolis 1548-15 picture.
micropolis 1548-15 picture.

Micropolis 1548-15 Specifications
Model Capacity Size Height Bus Type Int.Type
Micropolis 1548-15 1748MB 5.25" FHT SCSI2 Fast

Size 5-1/4"
Interface SCSI-2
Interface Type  
Encoding Method RLL
Formatted Capacity 1748 MB
Disks 8
Heads 15
Cylinders 2099
Sectors variable
Buffer Size N/A
Average Seek 14.5 msec
Single Track 4 msec
Rotation Speed / Avg. Latency 3600 rpm +/- 0.5%
Transfer Rate to / from media 23. 33 Mbits / sec
Transfer Rate to / from buffer N/A
Tracks Per Inch (TPI)  
Bits Per Inch (BPI)  
Dimensions 8.0"L x 5.75"W x 3.25"H
Weight 5.75 lbs.


POWER REQUIREMENTS
  +12V +/-5% +5V +/-5% Power
Spin up 4.3A (max)    
Read / Write 2.0A avg 1.5A avg  
Typical     24 Watts

Notes:
Drive Addressing and Interface Termination


         ___________Slave sync(pin 20)
        |   ________Master sync(pin 16)
        |  |  ______Bus parity check option( 7th set of  pins) 
        |  | | _____Write protect option(6th set of pins)
        |  | || ____Spindle control option(4th set of pins)
        |  | ||| ___ID2    
        |  | |||| __ID1        
        |  | ||||| _ID0                    Pin 1  
        |  | ||||||                             |             
        ___________    __________________________     ________  
      _|    J2     |  |          J1              |   |   J3   |  
     | |___________|_ |__________________________|___|________|  
     |                                                        |  
     |                       W12 :    ___________  . W1       |  
     |                               |___________| : W2       |  
     |                                 RN6                    |  
     |                                                    W11 |  
     |                                                        |  
     |                                                        |  
     |                                                        |  
     |                                                        |  
     |                                                        |  
     |                                 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
Address
Jumpers
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. RN6 Interface Terminator The Interface Terminator factory installed at RN6 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). Bus termination Power Option A jumper is installed at W1, at W2, or at W2 and W12 to select the source of terminator power (+5V) for the SCSI Bus terminator packs on the device electronics board. DO NOT install jumpers at both W1 and W12. When a jumper is installed at W1(the factory default configuration), the drive provides terminator power to it's on-board terminators. When a jumper is installed at W2 , terminator power is is provided by the host system via the interface cable J1, pin 26 (TERMPWR). When a jumper is installed at both W2 and W12 ,the drive provides terminator to its on board terminator and also the SCSI bus via interface cable J1,pin 26(TERMPWR). Frame Ground Options Jumper W11 selects th frame ground options. W11 is installed, the drive's logic ground to frame ground. When a jumper is not installed at W11 (the factory default configuration), frame ground is not connected to logic ground. Spindle Control Options A jumper bridging pins 7 and 8 of J2 (the 4th set of pins)is used to select the spindle control option. When a jumper is installed, the drive must wait for an interface Start Unit command to start the spindle motor. When a jumper is not installed, (the factory default configuration), the drive automatically starts the spindle motor at power-on Write Protect Option A jumper bridging pins 11 and 12 of J2 (the 6th set of pins) is used to select the write protect option. When a jumper is installed, the drive is write protected. CAUTION: The drive can still be formatted. When a jumper is not installed, (the factory default configuration), the drive is not write protected. Bus Parity Option A jumper bridging pins 13 and 14 of J2(7th set of pins) is used to select the parity check option. When a jumper is installed, the drive generates but does not detect parity. When a jumper is not installed, (the factory default configuration) the drive generates parity and enables parity detection. Spindle Synchronization Option The Rotational Position Locking field (MODE SELECT command, Page Code 04h) is used to specify spindle synchronization operation; see document #110366(SCSI Implementation in Micropolis "MZR" Products) and ANSI SCSI Standard. Unsynchronized: If the drive is set to Unsynchronized (PRL=01b), it ignores the SLAVE SYNC signal. Slave: If the drive is set to Slave (RPL=01b), it does not generate the MASTER SYNC signal or the SLAVE SYNC signal but synchronizes its index to the SLAVE SYNC signal (J2,pin 20) supplied by an external source Master: If the drive is set to MASTER (RPL=10b), it generates the SLAVE SYNC output signal (j2,pin 20) for use directly by the slave drives. Master Control: If the drive is set to Master Control (RPL=11b), i generates the MASTER SYNC signal(j2,pin 20). This output is used by the controller to generate the SLAVE SYNC signal(J2,pin 20) for the slave drives. * THESE SPECIFICATIONS ARE PRELIMINARY.

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