Micropolis 4743WS

Hard Disk Drive

Overview

Model	Capacity	Size	Height	Interface	Bus Type
Micropolis 4743WS	4300MB	3.5"	SL	W	SCSI3

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

Specifications

Size	3 1/2"
Interface	SCSI-3
Interface Type	Wide, Single-Ended, 68 Unitized Pin
Encoding Method
Formatted Capacity	4.3 GB
Disks
Heads
Cylinders	6807
Sectors	512
Buffer Size	N/A
Average Seek	10.5 msec
Single Track
Rotation Speed/Avg. Latency	5400 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	.3A
Read / Write	1.7A	.4A
Typical seeking			6 Watts

Notes

Configuration and Jumper Options

Front View

Remote LED
Open-collector output - Used to drive a user-supplied LED
to indicate the drive is active. SCSI ID
Jumpers at Pin 3-4, 5-6, 7-8, and 9-10 select the SCSI ID. Each SCSI device on one Host Adapter must have a unique SCSI ID (0-15).
SCSI ID0 is the Default.

SCSI ID	Pin 9-10	Pin 7-8	Pin 5-6	Pin 3-4
0	out	out	out	out
1	out	out	out	in
2	out	out	in	out
3	out	out	in	in
4	out	in	out	out
5	out	in	out	in
6	out	in	in	out
7	out	in	in	in
8	in	out	out	out
9	in	out	out	in
10	in	out	in	out
11	in	out	in	in
12	in	in	out	out
13	in	in	out	in
14	in	in	in	out
15	in	in	in	in

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.

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.

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.