Tektronix T202 Manuale utente

OPERATORS

MANUAL 070-6419-00

Product Group 40

T202

PORTABLE

OSCILLOSCOPE

Tektronix®

CCMMITTEl

EXCELLENCE

TEKOPERATORS

MANUAL 070-6419-00

Product Group 40

T202

PORTABLE

OSCILLOSCOPE

Please Check for

CHANGE INFORMATION

the Rear

This Manual

First Printing JUL 1987

"R!ktronoo

COMMITTED TO EXCEU£NCE

Tektronix

Inc

. All

rights

re-

served.

Contents

this

publication

may

not

reproduced

any

form

without

the

written

permis-

sion

Tektronix

Inc

Products

Tektronix,

Inc.

and

its

subsidiaries

are

covered

by U.S. and

foreign

patents

and/or

pend-

ing

patents.

TEKTRONIX,

TEK

SCOPE-MOBILE

and

are

registered

trademarks

Tektronix,

Inc.

Pri

nted

in U.S.A .

Specification

and

price

change

privileges

are

reserved

INSTRUMENT

SERIAL

NUMBERS

Each

instrument

has a serial

number

on a panel

insert,

tag

stamped

the

chassis

The

first

number

letter

designates

the

country

manu-

facture.

The

last

five

digits

the

serial

number

are assigned sequentially and

are

unique

each

instr

ument.

Those

manufactured

the

United

States

have six unique di

gits

The

country

manufacture

is Identified as follows:

8000000

100000

200000

300000

700000

Tektronix,

Inc

Beaverton

Oregon,

U.S.

Tektronix

Guernsey

Ltd

Channel Islands

Tektron

United

Kingdom,

Ltd

London

Sony/Tektronix

Japan

Tektronix

Holland,

Heerenveen

The

Netherlands

•

'.1

•

TABLE

CONTENTS

Page

LIST

ILLUSTRATIONS

................

Ill

OPERATORS

SAFETY

SUMMARY

.. ..

...

. IV

Section

GENERAL

INFORMATION

Introduction

.............

......

1-1

Preparation

For

Use

...

......

1-2

Safety

. .

...............

1-2

Ac/De

Adapter

..............

1- 3

Battery

Pack

...

.....

1- 3

Plastic

Cover

...............

Power-Up

Checks

...

....

1-12

Repackaging

........

...

....

1-12

Section

CONTROLS,

CONNECTORS

AND

INDICATORS

Input and Display

....

...

. 2- 1

Channel 1 and Channel 2

Vertical

and Horizontal Keys

...

2-3

Trigger

Keys

................

2-4

Source

and

Change

Over

Keys

......

...

............

2- 6

Mode

Keys

..................

2-7

Positioning,

Cursors

, and

Tracking

Keys

....

...

......

2-8

Save

Reference

and Signal

Processing

Keys . .

...

.. ..

...

2-8

Display and Sound Keys

...

2-9

Arithmetic

Numeric

Entry

and Di

mension

Keys

.........

2-10

Special-Purpose

Keys

.......

Data

Readout

. .

............

2-13

DVM/

COUNTER

Readout

....

2-16

Section

OPERATING

CONSIDERATIONS

Grounding

......

...

....

3- 1

Signal

Connections

...

3-1

Audible

Tone

..........

.....

3- 2

TABLE

CONTENTS (cont)

Page

Section

OPERATING

INSTRUCTIONS

Using

the

Keyboard

. 4- 1

Turn

ing

the

Input Channels

On/

Off

. . . . . .

. .

...

4-1

Auto

Setup

.......

.....

....

4- 1

Display .

....

........

......

4-2

Vertical

. .

.....

...

. 4- 3

Base

......

...........

4- 5

Delta

Time

Measurements

...

4- 6

gger

........

....

...

4- 7

Cursors

Measurements

4- 1O

Channel 1 and Channel 2

Data

Readout

...

......

4- 13

Signal

Process

ing

..........

. 4-

Saving

Front

Panel

Setups

Save

References

........

X-Y

Mode

. .

.....

4-20

Digi

tal

Voltmeter

and

Counter

. .

. 4- 20

Sect

PERFORMANCE

CONDITIONS

Electr

cal

Characteristics

. .

............

5- 1

Battery

Pack

Electr

ical

Characteristics

. .

.....

...

5-5

Environmental

Characteristics

............

5- 7

Physical

Characteristics

...

5-8

Section

OPTIONS

AND

ACCESSORIES

Introduct

ion

...

...........

. . 6-1

Option A

1-A5

Internat

ional

/De

Adapter

..........

...

6- 1

Standard

Accessories

6- 2

Optional

Accessories

....

.. ..

6- 2

Figure

1- 1

1- 2

1- 3

1- 4

2- 1

2- 2

2- 3

2-4

2- 5

2- 6

2- 7

2- 8

2- 9

LIST

ILLUSTRATIONS

Page

The

T202

Oscilloscope

...........

. VI

Instrument

power

receptacle

and

power

cord

.......

...

....

1-3

Battery

pack

controls

connectors,

and

Indicator

....•...

1-4

Retaining

screw

and

cover

........

1-6

Battery

compartment

...........

. 1- 7

Connectors

controls

, and

display

......

...........

-2

Vert

ical and horizontal

keys

...

. .

.. ..

.............

2- 3

Trigger

keys . .

................

2-4

Source

and

change

over

....

2- 6

Mode

, positioning,

cursors

, and

tracking

keys

.....

...

.....

2-7

Save

reference

and signal

processing

keys .

......

........

2-8

Display and sound keys . .

...

2-1 0

Arithmetic

numeric

entry

and

dimension

keys

.............

2-11

Spec

ial-

purpose

keys

...........

2-12

Channel

data

readouts

...

.....

2-14

DVM/

COUNTER

...........

. 2- 17

Ill

OPERATORS SAFETY SUMMARY

The

information

ummary

tor

oper-

ating

onnel

Warnings

and

cautions

will

also

be fo

und

throughout

the

manual

where

they

ap-

Measurement

Specifications

imum

saf

operating

potential

betwe

probe

ommon

plus

input

circuit

earth

ground

shall

not

ceed

42 vo

lts

peak

ac.

Measuring

terminal

input

common

references

are

onnected

each

other

internally

avoid

measureme

errors

, do

not

connect

voltages

fferent

potentials

between

input

terminals

com-

mons

For

floating

measurements

above

volts

peak

TEKTRONIX

model

A6902B

recommended

for

afe

measurement

operat

ions.

Terms

this

Manual

CAUTION

statements

identify

conditions

prac-

ces

that

could

result

damage

the

equipment

other

property.

WARNING

statements

identify

conditions

practices

that

could

result

personal

injury

loss

life.

Terms

Marked

Equipment

CAUTION

ndicates

personal

injury

hazard

not

immediately

accessible

one

reads

the

mark-

ings,

hazard

property

, including

the

equip-

ment

itself.

DANGER

dicates

persona

l injury

im-

mediately

accessible

as one

reads

the

marking

Symbols

this

Manual

This

symbol

ind

ica

tes

where

applicable

cautionary

other

information

found

For

maximum

input

voltage

see

the

T202

Electrical

Characteristics

Section

Symbols

Marked

Equipment

ATTENTION

Refer

Manual.

Source

Use only

the

Power

Adapter

specified

for

prod-

uct

put

voltage

rating

For

battery

operation

refer

Battery

Pack

" in

Section

Not

Operate

Explosive

Atmospheres

Not

Remove

Covers

Panels

not

remove

the

product

covers

panels. Do

not

operate

the

product

without

the

covers

and

panels

properly

installed.

L :J

'.J

C C

"':i-

'.J

The

T202

Oscilloscope

6419-01

GENERAL INFORMATION

Introduction

The TEKTRONIX T202

Oscilloscope

is a

rugged,

lightweight digital

storage

instrument.

The

instru-

ment

performs

voltage

time

, and

frequency

measurements

acquired

waveforms

The

T202

microprocessor

controlled

instrument

and

may

powered

either

from

Its

battery

pack

or,

using

the supplied

adapter

from

power

source.

Waveforms

and

measurement

results

are

dis-

played on a

Liquid-Crystal

Display

(LCD)

with a

128 x 128

point

display

matrix.

The

dual-channel

vertical

system

has a

5-MHz

bandwidth with

calibrated

deflection

factors

from

volt

per

division

20 volts

per

division.

The

horizontal

system

has

separate

timing

circuits

for

each

vertical

channel

and

two

time

bases

with

horizontal

deflection

factors

from

hour

per

divi-

sion

nanoseconds

per

division.

Second

per

division

time

base

provides

the

timing

speed

for

the signal

acquisition

and

delta

time

base

expands

selected

portion

the

second

per

division

time

base

full display

width

Acquisition

triggering

setups

can

automatically

made

the

instrument

they

may

user

se-

lected

for

each

the

two

vertical

input

channels.

selectable

trigger

point

permits

the

user

set

the

pretrigger

and

post-trigger

portions

the

ac-

quired

waveform.

Specified

points

on an

acquired

waveform

for

mak-

ing

voltage,

time,

frequency,

phase

measure-

ments

are

user

selectable

with

vertical

horizon-

tal

measurement

cursors.

Cursor

measurement

results

are

displayed

the

top

and

bottom

the

display.

Automatic

digital

voltmeter

and

counter

measurement

the

RMS

voltage

mean

voltage,

peak-to-peak

voltage

zero-to-peak

voltage

pe-

riod, and

frequency

selected

vertical

channel

signal is also available. Digital

voltmeter

and

counter

measurement

results

are

displayed in a

table

format.

1-1

Acquired

waveforms

may

saved

any

nine

nonvolatile

memories.

The

stored

waveforms

may

then

recalled

later

time

compare

against

the

waveforms

being

acquired

Time

base

and

trigger

keyboard

settings

may

also

saved

the

nonvolatile

memory

for

later

recall.

Recalling a

frequently

used

setup

speeds

the

measurement

reducing

the

number

keyboard

entries

needed

Signal

processing

both

input

channels

and save

reference

information

available.

Input

Channels

reference

in any

combination

can

added,

subtracted

, multiplied,

divided.

The

following

items

are

standard

accessories

shipped with

the

instrument

Probe

packages

AC/DC

Adapter

Operators

Manual

Battery

Pack/Carrying

Case

For

information

about

standard

accessories

and a

list

the

optional

accessories

refer

Options

and

Accessories"

(Section

this

manual.

For

additional

information

accessories

and

ordering

assistance

contact

your

Tektronix

representative

local

Tektronix

Field

Office.

Preparation

for

Use

Safety

This

section

tells

how

prepare

for

and

pro-

ceed

with

the

initial

start-up

the

instrument.

Refer

the

Operators

Safety

Summary

the

front

this

manual

for

power

source

and

other

safety

considerations.

Before

connecting

the

in-

strument

power

source

read

both

this

sec-

tion and

the

Safety

Summary.

1-2

Ac/De

Adapter

Instruments

are

shipped

with

detachable

ac/dc

adapter

that

plugs

into

power-source

outlet.

The

adapter

converts

the

alternating-current

source

voltage

low-direct-current

voltage

for

the

operation

the

instrument.

The

ac/dc

adapter

plugs

into

the

instrument

' s

power

cord

receptacle

as shown in

Figure

1-1 .

POWER

CORD

6419-02

Figure

1-1.

Instrument

power

recep-

tacle

and

power

cord.

Instruments

are

shipped

with

the

ac/dc

adapter

ordered

the

customer.

Information

about

the

available

ac/dc

adapter

found

in "

Options

and

Accessories"

(Section

this

manual)

Battery

Pack

NOTE

Batteries

are

not

included

with

the

bat-

tery

pack.

The

battery

pack

the

carrying

case

permits

choice

battery

operation

the

T202 when a

source

power

not

available.

The

battery

pack uses

four

D-size

batteries

either

alkaline

rechargeable

nickel-cadmium.

General

Information

1-3

WARNING

The

battery

charger

for

use

with

ckel-cadmium

batteries

only.

Other

types

may

plode

release

hazard-

ous

materials

recharged

Controls

and

Indicator

See Fig

ure

-2

for

the

location

the

controls

connectors

and

indicator

1-4

'®

6419-03

Figure

1-2

Battery

pack

controls

connectors

and

indicator

•

• J

• ii

■

Power

Switch-

Turns

the

battery

pack

and

off.

Press

for

on;

press

again

for

off

High

Low

Charge

Switch-Selects

charg-

ing

rate

for

nickel-cadmium

batteries

Press

for

high

charging

rate

;

press

out

for

low

charging

rate

This

switch

accessible

when

the

battery

cover

removed

Power

Cord-Plugs

into

the

instrument

power

receptacle

when

battery

operation

requ

ed.

Receptacle-Provides

the

connection

for

the

adapter

when nickel-

cadmium

batteries

need

recharged.

Power

Indicator-Indicates

either

that

bat-

tery

output

voltage

is available

that

charge

current

is flowing when nickel-

cadmium

bat

teries

are

being

recharged

WARNING

avoid

electric

shock

disconnect

easur

ing

terminals

before

attempting

remove

batteries

Battery

Installation

To install

the

batteries

the

battery

compart-

ment

perform

the

following

steps

Remove

all

contents

from

inside

the

carrying

case

Remove

the

retaining

screw

from

the

battery

pack

cover

(

see

Figure

1- 3) .

General

Information

1-5

Lift

the

battery

pack

cover

and

pull it

out

the

slots

the

wall

the

carry

case

(see

Figure

1-3)

4. Re

move

any

dead

batteries

from

bat

ery

mpar

men

t .

SLOTS

r.-----

I V

,=#

' RETAINING

I SCREW

I/ COVER

1 'cl O

, I

Figure

1-3

cover

6419-04

Retain

screw

and

Obse

rve t

correct

polar

y when in-

sert

g b

atteries

the

bat

tery

art

ment , Putting one

mor

e of

atte

ries in

bac

wards

may

cause

ernal f

use

open

1-6

■

•

■

•

■

5. Place

the

batteries

the

battery

compart-

ment

Observe

the

polarity

indications

shown on

the

bottom

the

battery

compart-

ment

(

see

Figure

1- 4) ,

6. Replace

the

battery

pack

cover

and

accesso

ries.

POSITIVE

TERMINAL NEGATIVE

TERMINAL

gure

1-4.

Battery

compartment.

General

Information

419-05

1-7

NOTE

When

operating

the

instrument

from

the

battery

pack

, always

set

the

battery

pack

power

switch

(button

in)

before

turning

the

T202.

Failure

may

result

keyboard

lockup

and

a loss

stored

data.

The

keyboard

lockup

will

not

damage

the

instrument

the

bat-

tery

pack

. A

lockup

condition

cor-

rected

turning

all

the

power

switches

off

and

using

the

turn-on

seque

nce

Stored

data

that

lost

cannot

recov-

ered.

Turning

the

Instrument

Set

both

instrument

Input

Coupling

(OFF

GND,

and

AC)

switches

OFF

positions

and

the

battery-pack-power

switch

off

(button

out).

2. Plug

the

de-power

cord

from

the

battery

pack

into

the

instrument

de-power

receptacle.

Set

the

battery-pack

power

switch

(

button

in) .

4. Slide one

both

instrument

Input

Coupling

switches

coupling

position

(DC

GND

position).

Turning

the

Instrument

Off

When

turning

the

instrument

off

set

both

Input

Coupling

switches

OFF

position

before

turning

the

battery

pack

off

the

battery

pack

mistak-

enly

turned

off

first,

reset

all

the

power

switches

off

and

use

the

turn

sequence

given in

Turning

the

Instrument

•

before

attempting

turn

the

instrument

again.

Battery

Operation

battery

operating

mode

the

Power

indicator

displays a

steady

light when

there

sufficient

bat-

tery

voltage

operate

the

instrument.

A blinking

1-8

•

■

:II

■

:II

■

Power

indicator

shows

that

the

output

voltage

the

batteries

has

dropped

below

4.75

volts.

the

time

the

Power

indicator

starts

blink,

there

sufficient

battery

capacity

remaining

operate

the

instrument

for

about

minutes

with

both

channels

being

displayed

temperatures

between

20°c

30°c (68°F

°F) .

Operating

Time

How

long

the

instrument

may

operated

from

the

battery

pack

depends

the

battery

condition

and

the

instrument's

operating

mode

There

is as

much

two-to-one

difference

power

require-

ment

depending

operating

mode.

The

longest

battery

pack

operating

time

obtained

when only

one channel is

displayed

normal

mode.

With

both

channels

displayed

the

power

consumption

increased

about

35%

Worst

case

occurs

when

both

channels

are

displayed

and

the

vertical

inputs

are

overdriven

(several

volts

being

applied

the

input

with

the

Volts

per

Division

switches

set

V).

Battery

life is

prolonged

turning

the

instrument

off

when

not

use.

Rechargeable

Batteries

WARNING

The

battery

charger

for

use

with

nickel-cadmium

batteries

only.

Other

types

may

explode

release

hazard-

ous

materials

recharged.

Before

recharging

the

nickel-

cadmium

batteries

the

high/low

charge

switch

needs

set

match

the

ampere-hour

rating

the

batteries

General

Information

1-9

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