Micropolis hard Disk Drives, Specifications, Support, Specs, Jumpers, Manual, Images

Micropolis 1684-7

Hard Disk Drive


Model Capacity Size Height Interface Bus Type
Micropolis 1684-7 340MB 5.25" HHT SE SCSI2


Size 5-1/4"
Interface SCSI
Encoding Method
Formatted Capacity 339.6 MB
Disks 4
Heads 7
Cylinders 1780
Sectors 54
Buffer Size N/A
Average Seek 14 msec
Single Track 4 msec
Rotation Speed / Avg. Latency 3600 rpm +/- 0.5%
Transfer Rate to / from media 15 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 1.625"H
Weight 5.75 lbs.

Power Requirements

+12V +/-5% +5V +/-5% Power
Spin up 2.0A (max)
Read / Write .9A avg .8A avg
Typical 14.8 Watts


Drive Addressing and Interface Termination

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.

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 0 at the factory.

RN9 Interface Terminator
  The Interface Terminators 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 selects the source of terminator power (+5V) for the interface
  terminators. When 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 installed at W2,
  terminator power is provided by the host system via interface cable J1, pin 26.
  If a jumper is installed at W2 and W31, the drive provides terminator power to
  its on-board terminators and also to the SCSI bus via interface cable J1.

W31 Bus Option
  W31 allows the drive to supply interface terminator power to the SCSI Bus.
  If W31 is not installed (the factory default configuration), the drive does not
  supply SCSI bus interface terminator power. W31 should not be installed for
  PC/AT applications.

W3, Spindle Option
  W3 selects the spindle control option. If W3 is installed, the drive waits for a
  Start Spindle command (after power is applied) to start the spindle motor.
  If W3 is not installed (the factory default configuration), the drive automatically
  starts the spindle motor at power-on. W3 is not installed for PC/AT installations.

W9 Bus Parity Option
  W9 selects the parity check option. If W9 is installed, the drive neither generates
  nor detects parity. If W9 is not installed (the factory default configuration), the drive
  generates parity and enables parity detection. W9 is usually not installed for PC/AT
  applications. Verify the correct configuration required by your Host Adapter.