Micropolis 4743NS

Hard Disk Drive

Overview

Model	Capacity	Size	Height	Interface	Bus Type
Micropolis 4743NS	4300MB	3.5"	SL	Ultra	SCSI3

This drive is from the 4743 "Stinger" model family.

Specifications

Size	3 1/2"
Interface	EIDE
Interface Type	40 Pin
Encoding Method
Formatted Capacity	2.5 GB
Disks	2
Heads	4
Cylinders	4050
Sectors	512
Buffer Size	N/A
Average Seek	10.5 msec
Single Track
Rotation Speed/Avg. Latency	5200 rpm +/- 0.5%
Transfer Rate to / from. media	20 Mbytes/sec Synchronous
Transfer Rate to / from buffer
Tracks Per Inch (TPI)
Bits Per Inch (BPI)
Dimensions	5.75"D x 4.0"W x 1.0"H
Weight	1.4 lbs.

Power Requirements

	+12V +/-5%	+5V +/-5%	Power
Spin up	.55A
Read / Write	.6A	.6A
Typical seeking			12 Watts

Notes

Configuration and Jumper Options

Front View

SCSI ID Jumpers at Pin 3-4, 5-6, and 7-8 select the SCSI ID.
Each SCSI device on one Host Adapter must have a unique SCSI ID (0-7).
SCSI ID0 is the Default.

SCSI ID	Pin 7-8	Pin 5-6	Pin 3-4
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

Interface Termination (W4)
Jumper installed at W4 (Default) - The drive provides termination for the interface lines; onboard termination is electrically enabled. Jumper omitted at W4 - The drive does not provide termination for the interface lines; onboard termination is electrically disabled.

Terminator Power (W1, W2, W3)
Jumper installed at W1 (Default) - The drive provides terminator power.
Jumper installed at W2 - The host provides terminator power (via Interface Connector J1A).
Jumper installed at W3 (Default) - The drive provides terminator power (via J1A) to the SCSI Bus.

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 (WP)
Jumper installed at WP - The drive is write protected. Jumper omitted at WP (Default) - The drive is not write protected.

BUS Parity Check (PTY)
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.

Remote LED
Open-collector output - Used to drive a user-supplied LED to indicate the drive is active.