Tektronix 2245A Manuale utente

OPERATORS

MANUAL

070-6558-01

Product

Group

2245A

PORTABLE

OSCILLOSCOPE

OPERATORS

Please

Check

for

CHANGE

INFORMATION

the

Rear

This

Manual

First

Printing

JAN

1989

Revised

JUN

1989

COMMITTED

EXCELLENCE

1987,1889

Tektronix,

inc.

Ail

rights

reserved.

Contents

this

publication

may

not

reproduced

any

form

without

the

written

permis¬

sion

Tektronix,

Inc.

Products

Tektronix,

Inc.

and

Its

subsidiaries

are

covered

U.S.

and

foreign

patents

and/or

pending

patents.

TEKTRONIX,

TEK,

SCOPE-MOBILE

and

Tektronix,

Inc.

Printed

U.S.A.

Specification

and

price

change

privileges

are

reserved.

INSTRUMENT

SERIAL

NUMBERS

Each

instrument

has

serial

number

panel

Insert,

tag,

stamped

the

chassis,

The

first

number

letter

designates

the

country

manufac¬

ture.

The

last

five

digits

the

serial

number

are

assigned

sequentially

and

are

unique

each

Instrument.

Those

manufactured

the

United

States

have

six

unique

digits.

The

country

manufacture

identified

follows:

BOOOOOO

Tektronix,

inc.,

Beaverton,

Oregon,

U.S.A.

G100000

Tektronix

Guernsey,

Ltd.,

Channel

Islands

E2000C0

Tektronix

United

Kingdom,

Ltd.,

Marlow

J300000

Sony/Tektronix,

Japan

H700000

Tektronix

Holland,

NV,

Heerenveen,

The

Netherlands

HKOOOOO

Tektronix,

inc.

Hong

Kong

are

registered

trademarks

Power

Source

This

product

intended

operate

from

power

source

that

does

not

ap¬

ply

than

250

rms

between

the

supply

conductors

between

either

supply

conductor

and

ground.

protective

ground

connection,

way

the

grounding

conductor

the

power

cord.

essential

for

safe

operation,

Grounding

the

Product

This

product

grounded

through

the

grounding

conductor

the

power

cord.

avoid

electrical

shock,

plug

the

power

cord

into

properly

wired

receptacle

before

making

any

connections

the

product

input

output

terminals.

protective

ground

connection,

way

the

grounding

con¬

ductor

the

power

cord,

essential

for

safe

operation.

Danger

Arising

From

Loss

Ground

Upon

ioss

the

protective-ground

connection,

ail

accessible

conductive

parts,

including

knobs

and

controls

that

may

appear

insulating,

can

render

electric

shock.

Use

the

Proper

Power

Cord

Use

only

the

power

cord

and

connector

specified

for

your

product.

The

power

cord

must

good

condition.

Read

Section

for

power-cord

and

connector

information.

Use

the

Proper

Fuse

avoid

fire

hazard,

use

only

fuse

the

correct

type,

voltage

rating

and

current

rating

specified

the

back

your

product

and

Table

6-1.

Not

Operate

Explosive

Atmosphere

avoid

explosion,

not

operate

this

product

explosive

atmosphere.

2245A

Operators

Not

Remove

Covers

Panels

avoid

personal

injury,

not

remove

the

product

covers

panels.

not

operate

the

product

without

the

covers

and

panels

properly

installed.

2245A

Operators

SECTION

NTRODUCTION

2245A

Operators

Introduction

Description

The

2245A

100

MHz,

four-channel,

dual-sweep,

portable

oscilloscope

for

general-purpose

use

(Figure

1-1).

microprocessor-based

operating

system

controls

most

the

functions

the

instrument,

including

voltage

and

time

cursor

measurement

system

and

single-button

automatic

front-panel

setup

feature.

menu-driven

service

mode

provides

for

con¬

figuring

single-sweep

readout

displays,

internal

calibration,

and

servicing

diagnostics.

Figure

1-1.

The

2245A

Oscilloscope.

2245A

Operators

1-1

Introduction

The

vertical

deflection

system

has

four

input

channels.

Two

channels

have

basic

deflection

factors

from

per

division,

and

two

channels

have

two

basic

deflection

factors

0.1

and

0.5

per

division.

Basic

deflection

factors

can

extended

with

attenuator

probes.

VOLTS/DIV

readouts

are

switched

display

the

correct

vertical

scale

factors

when

properly

coded

probes

are

connected

the

vertical

input

connectors.

The

horizontal

deflection

system

provides

single,

dual,

delayed

sweeps

from

0.5

per

division

{delayed

sweep,

per

division).

The

trigger

system

provides

stable

triggering

over

the

fui!

bandwidth

the

vertical

deflection

system.

Alphanumeric

crt

readouts

the

vertical

and

horizontal

scale

factors

are

displayed

the

bottom

the

screen.

On-screen

vertical

and

horizontal

cursors

provide

accurate

voltage,

time,

and

frequency

measurements;

measurement

values

are

displayed

the

top

the

crt.

The

measurement

system

provides

direct

readout

delta

voltage,

delta

time,

and

frequency

from

positionable

cursors.

Delay-time

and

delta-delay

measurements

for

time

and

frequency

are

available

ALT

and

Horizontal

Modes.

pressing

single

button

(AUTO

SETUP),

the

front-panel

controls

can

set

produce

usable

waveform

display

based

the

voltage

and

time

characteristics

the

input

signals.

1-2

2245A

Operators

Introduction

Standard

Accessories

The

following

items

are

standard

accessories

shipped

with

the

2245A

instrument:

Probes,

10X,

1.5

meter,

with

accessories

Power

cord

Power

cord

clamp

Operators

manual

Reference

guide

Crt

filter,

blue

plastic

(installed)

Fuse,

2A,

250

slow-blow

Accessory

pouch,

Ziploc

See

Section

“Options

and

Accessories"

for

part

numbers

and

further

information

about

standard

accessories

and

list

the

recommended

optional

accessories.

For

information

accessories

and

ordering

assistance,

contact

your

Tektronix

representative

local

Tektronix

Fieid

Office.

2245A

Operators

1-3

Introduction

PREPARATION

FOR

USE

Refer

the

Operators

Safety

Summary

the

front

this

manual

for

power

source,

grounding,

and

other

safety

information

about

the

use

the

instrument.

Before

connecting

the

2245A

power

source,

read

this

section

and

the

Safety

Summary.

Line

Fuse

CAUTION

t<vwwwv“

This

instrument

can

damaged

the

installed.

Verify

the

proper

value

the

power-input

procedure.

Press

the

fuse-holder

cap

and

release

clockwise

rotation.

Pull

the

cap

(with

the

attached

fuse

inside)

out

the

fuse

holder.

Verify

proper

fuse

value.

Install

the

proper

fuse

and

reinstall

the

fuse-holder

cap.

Line

Voltage

and

Power

Cord

The

2245A

operates

line

voltages

from

250

with

line

frequencies

ranging

from

440

Hz.

line

voltage

selecting

necessary.

Instru¬

ments

are

shipped

with

the

power

cord

that

was

requested

the

order.

The

power

cord

must

match

the

power-source

outlet;

does

not,

con¬

tact

your

Tektronix

representative

local

Tektronix

Field

Office.

See

Figure

1-2

for

optional

power

cords

available.

The

detachable

three-wire

power

cord

has

three-contact

plug

for

con¬

nection

the

power

source

and

the

protective

ground.

The

power

cord

held

the

rear

panel

clamp.

The

protective

ground

contact

the

plug

connects

(through

the

power

cord

protective-ground

conductor)

the

accessible

metal

parts

the

instrument.

wrong

line

fuse

with

the

following

with

slight

counter-

1-4

2245A

Operators

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