Qume DataTrak 8 Manual de usuario descargar pdf (Pagina 19)

Product

Specifications

3ms

15ms

91ms

35ms

Diskette

20

or equivalent

1.6 Mbytes/disk

1.2

Mbytes/disk

6816 BPI

48TPI

77

154

MFM

360

RPM

500K bits/sec

83ms

Installation Requirements

Power requirements

AC:

100/115

VAC

(±10%),

50/60Hz

(±1%)

O.4A

max.

200/230

VAC

(±10%),

50/60Hz

(±1%) 1.3A max.

DC:

+24V

(±10%), 1.0A max.

+5V

(±5%), 1.3A max.

Power dissipation 55W

Operating environment

Temperature 41°F to 110°F

(5°C

to

43°C)

Relative humidity 20% to 80%

Max wet bulb

85°F

(29°C)

Mechanical dimensions

Width 4.62

in.

(117 mm)

Height 8.55

in.

(217 mm)

Depth 14.57

in.

(370 mm)

Weight 13

lbs.

(6kg)

Performance Specifications

Capacity

Unformatted

IBM

format

Recording density

Track density

Cylinders

Tracks

Recording method

Rotational speed

Transfer rate

Latency (avg.)

Access time

Track-to-track

Settling

Average

Head

Load Time

Disk

Design

Features

Expanded storage capacity

· Two-sided, double density

Fully

IBM

compatible

•

IBM

3740

and

System

32

drives

•

IBM

3600

and

4964

drives

•

IBM

System

34

drives

Proven head carriage assembly

· Ceramic

head

with tunnel erase

· Dual-head

flex

mounting arrangement

• Superior

head

load dynamics

Fast, precise steel belt drive

· Fast access time - 3 ms track-to-track

• Low friction

and

minimum wear

• Low power dissipation

Additional features

• ISO standard write protect

• Programmable

door

lock

• Negative DC voltage not required

• Daisy chain up to 4 drives

• Side-by-side mounting

in

standard 19"

RETMArack

-------14.25±.08

--------:

1/10

9

bits read

1/10

12

bits read

1/106 seeks

15,000H

or

5 years

3.5 x 10

6

passes/track

2x3-#8-32

UNCx.25DP.

Maintenance and Reliability

MTBF

6000H

MTTR 0.5H

PM

6000H

or 2 years

Error rate

Soft read error

Hard read error

Seek error

Design

life

Media

life

11

Qume®

I

~

2323

Industrial Parkway West

m

~

Hayward, CA

94545

Tel:

(415)

783-6100, 1WX: 910-383-0192

Fonn

80-22710/78

100

©1978

Qume

Corporation. Specifications subject to change \Aithout notice

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