Shugart SA810 Spezifikationen PDF herunterladen (Seite 11)

1.3.2

Drive Mechanism

The

Head

Positioning Actuator moves

the

read/write

head{s} to

the

desired track

the

diskette.

The

head{s}

loaded

onto

the diskette when the

door

knob

closed. If

diskette

inserted when the

door

knob

closed, the

heads

will

not touch each other.

The

dc drive motor

under

phase

locked loop

speed

control (using

integral tachometer) rotates the spindle at

360

rpm. A contracting collet/spindle assembly provides precision media positioning

and

clamping to ensure data inter-

change. A diskette ejector places the diskette within reach of the operator when the diskette

unclamped.

1.3.3

Positioning

Mechanism

The

read/write

head

assembly

accurately positioned through

the

use of a precision HeliCam V-groove lead

screw with a flat nut follower which

attached to the

head

carriage assembly. Precise track location

accomplished

as the lead screw

rotated

discrete increments

a stepper motor.

1.3.4

Read/Write

Heads

The

proprietary

head

{s}

a single element ceramic

read/

write

head

with straddle erase elements to provide erased

areas between data tracks. Thus, normal interchange tolerances between media

and

drives

will

not

degrade

the

signal to noise ratio

and

diskette interchangeability

ensured.

The

read/write

head{s)

mounted

a carriage which

located

precision carriage ways. The diskette

held

a plane perpendicular to the

read/write

head

(s)

by a platen located

the base casting. This precise registration

assures perfect compliance with

the

read/write

head{s}. The

read/write

head{s}

direct contact with the

diskette. The

head

surfaces have been designed to obtain maximum signal transfer to

and

from the magnetic sur-

face of the diskette with minimum

head/diskette

wear

due

the

low mass suspension system.

1.3.5

Recording Formats

The

format of the data recorded

the diskette

totally a function of the host system. This format can be designed

around

the user's application to take maximum advantage of the total available bits that can be written

anyone

track.

Figure 1-2 provides a functional diagram of the

SA810/860.

For a detailed discussion of the various recording for-

mats, refer to Section

VI.

1.4

FUNCTIONAL OPERATIONS

1.4.1

Power

Sequencing

Applying dc

power

to the

SA810

SA860

can be

done

any sequence; however, during

power

up,

the

WRITE

"GATE

line must be held inactive or at a high level. After application of dc power, a

ms delay should be introduc-

before a seek operation or before the control output signals are valid. After powering

on,

the initial position of

the

read/write

heads

with respect to the data tracks

the media

indeterminant.

order to assure

proper

posi-

tioning of the read/write

heads

after power

and

internal write current

SWitching

at the

proper

track, a STEP

OUT operation should be performed until the TRACK

line becomes active (recalibrate).

1.4.2

Drive

Selection

Drive selection occurs when the DRIVE SELECT line

the drive

activated. Only the drive with this line active

will

respond to input lines or gate output lines. Under normal operation, the DRIVE SELECT line enables the input

and

output

lines, starts the spindle motor, locks the door,

and

lights the Activity LED

the front of the drive.

1.4.3

Motor On

order for the host system to read

write data, the dc drive motor must be turned on.

the standard configura-

tion, this

accomplished by activating

the

line DRIVE SELECT. A

165

ms delay must be introduced after ac-

tivating this line (or the

TRUE READY line may be monitored) to allow the motor to

come

speed

before

reading

writing can be accomplished.

All

motors

a daisy chain configuration can be turned

with

the

op-

tional

MOTOR ON line or the spindle motor may be activated

when

both MOTOR ON

and

DRIVE SELECT are

present. Refer to paragraphs

7.8

and

7.9.

1-4

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 61 62

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Samsung WW80K52E0UW/FQ Instrukcja Użytkownika (116 strony)

Marka: Samsung | Kategoria: Washing machines | Rozmiar: 17.57 MB |

Spis treści

Washing Machine

Contents

Troubleshooting 49

Specications 56

Important safety precautions

English 7

English 9

Safety information

English 11

Critical cleaning warnings

Installation

English 15

Flooring

Water temperature

Alcove installation

STEP 4 Connect the water hose

English 21

English 23

Before you start

English 27

English 29

English 31

Operations

English 33

Cycle overview

Delay End

English 39

Maintenance

Emergency drain

Mesh lter

Detergent drawer

Troubleshooting

English 51

Information codes

English 55

Specications

Protecting the environment

English 59

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DC68-03886A-00

116

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