HyperHelpHTML - Drives: Micropolis - 4743SS

Manufacturer: Micropolis

Model: 4743SS

TD# 470129

Interface... Ultra SCSI-3

Formatted Capacity... 4,300 MB

Cylinders	6807	Heads	11	Sectors	Variable
Landing Zone	Max Cyl	Precomp	N/A	RWC Cyl	N/A
Encoding Method	RLL1,7	Xfer/Mb(async/sync)	40 20 10	MTBF (Hr X 1000)	400
Form factor	3.5"	Novell Y/N	Y	Height	1"
Power (Typical)	5W	Power (Max)	6.0W	Speed	5400
Avg seek (ms)	<10	Cache	512k	Mfg. Warranty	5 YRS

Configuration and Jumper Options

Image of Drive showing Jumper locations and Options

(Pin numbers refer to the Option Jumper Block)

Spindle Control (SP0)
Jumper installed at SP0, jumper omitted at SP1 - The spindle motor starts when SCSI ‘START UNIT’ command is received.
Jumpers omitted at SP0 (Default) and at SP1 - The spindle motor starts at power-on.

Spindle Delay (SP1)
Jumper installed at SP1, jumper omitted at SP0 Spindle motor start-up is delayed, based on SCSI ID (12 seconds per SCSI ID).
Jumpers omitted at SP1 (Default) and at SP0 - The spindle motor starts at power-on.

Write Protect

A jumper at WP (Pins 15 and 16) selects the write protect option.


    Jumper      The drive is write protected.
    No Jumper   The drive is not write protected. (Default)

BUS Parity Check (PTY)

A jumper at PTY (Pins 17 and 18) selects the bus parity check option.


    Jumper installed at PTY - The drive neither generates nor detects parity.
    Jumper omitted at PTY (Default) - The drive generates parity and has parity

detection enabled.

Image showing Drive Mounting

Activity LED Enable (ALE)
Jumper installed at ALE (Default) - Interface ACTIVITY LED OUT signal is enabled.
Jumper omitted at ALE - Interface ACTIVITY LED OUT signal is Disabled.
Open-collector output - Used to drive a user-supplied LED to indicate the drive is active.

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