Tektronix 47E5A Manuale utente

II . Tektronix, Inc.

P.O. Box

500

Beaverton, Oregon

97077

070·2163

·00

TEKTRONIX®

47E5A

DSCILLDSCDPE

AND

DM44

DIGITAL

MULTIMETEA

PEA

INSTRUCTION

MANUAL

Serial Number

___

rst Printing AUG. 1976

WARRANTY

All

TEKTRONIX

instruments

are

warranted

against

defective

materials

and

workmanship

for

one

year.

Any

questions

with

respect

the

warranty

should

taken

with

your

TEKTRONIX

Field

Engineer

representative.

All

requests

for

repairs

and

replacement

parts

should

directed

the

TEKTRONIX

Field

Office

representative

your

area.

This

will

assure

you

the

fastest

possible

service. Please

include

the

instrument

Type

Number

Part

Number

and

Serial

Number

with

all

requests

for

parts

service.

Specifications

and

price

change

privileges

reserved.

Tektronix,

Inc.,

Beaverton,

Oregon.

Printed

the

United

States

America.

All

rights

reserved.

Contents

this

publication

may

not

reproduced

any

form

without

permission

Tektronix,

Inc.

U.S.A.

and

foreign

Tektronix

products

covered

U.S.

and

foreign

patents

and/or

patents

pending.

TEKTRONIX

is a

registered

trademark

Tektronix,

Inc.

TABLE OF

CONTENTS

Page

LIST

ILLUSTRATIONS

BASIC

OSCILLOSCOPE

DISPLAYS

LIST

TABLES

NORMAL

SWEEP

DISPLAY

MAGNIFIED

SWEEP

DISPLAY

BEFORE

OPERATING

DELAYED

SWEEP

DISPLAY

INTRODUCTION

MIXED

SWEEP

DISPLAY

SAFETY

INFORMATION

1 X-Y

DISPLAY

OPERATING

VOLTAGE

SINGLE

SWEEP

DISPLAY

Line

Voltage

Selection

Regulating

Range

Selection

DM44

DISPLAYS

AND

MEASUREMENTS

OPTIONS

RESISTANCE

CONTROLS,CONNECTORS,AND

VOLTS

INDICATORS

TEMPERATURE

VERTICAL

Accuracy

Check

DISPLAY

TIME

AND

1/TIME

DM44 7

TRIGGER

HORIZONTAL,

CALIBRATOR,

AND

POWER

APPLICATIONS

AND

MEASUREMENTS

REAR

PANEL

PRELIMINARY

LEFT SIDE

PANEL

Signal

Ground

RIGHT

SIDE

PANEL

Input

Coupling

Capacitor

Precharging

475A/DM44

Operators

Page

TABLE OF

CONTENTS

(cont)

APPLICATIONS

AND

MEASUREMENTS

(cont) Page

APPLICATIONS

AND

MEASUREMENTS

(cont) Page

OPERATOR'S ADJUSTMENTS

AND

CHECKS

PHASE DIFFERENCE MEASUREMENTS 42

Trace Rotation

HIGH

RESOLUTION PHASE DIFFERENCE

Probe Compensation

MEASUREMENTS 43

Vertical Gain Check

PULSE JITTER MEASUREMENTS

Basic 475A

Timing

Check

DELAYED OR MIXED SWEEP

DM44

Timing

Check

MAGNIFICATION

External Horizontal Gain Check

Magnified Sweep Starts

After

Delay

PEAK-TO-PEAK VOLTAGE Triggered Delay Sweep

Magnification

MEASUREMENTS-AC

INSTANTANEOUS

VOLTAGE

BASIC

475A DELAYED OR

MIXED

SWEEP

TIME

MEASUREMENTS-DC

ALGEBRAIC

ADDITION

MEASUREMENTS

COMMON MODE REJECTION

TIME

DIFFERENCE BETWEEN REPETITIVE

AMPLITUDE

COMPARISON PULSES (BASIC 475A) 48

MEASUREMENTS

TIME DURATION MEASUREMENTS

TIME-DURATION

MEASUREMENTS

(BASIC 475A) 49

FREQUENCY MEASUREMENTS

FREQUENCY MEASUREMENTS (BASIC 475A)

RISETIME MEASUREMENTS

TIME

DIFFERENCE BETWEEN TWO PULSES

TIME DIFFERENCE BETWEEN TWO . FROM DIFFERENT SOURCES (BASIC 475A)

PULSES FROM DIFFERENT SOURCES 40 RISETIME (BASIC 475A)

TIME COMPARISON MEASUREMENTS

MIX (BASIC 475A)

Ii 475A1DM44 Operators @

I TABLE OF

CONTENTS

(cont)

DM44

DELAYED

MIXED

SWEEP

TIME

Page

OPERATOR

SPECIFICATIONS

(cont)

Page

MEASUREMENTS

TIME

DIFFERENCE

BETWEEN REPETITIVE Z

AXIS

INPUT

PULSES

(DM44)

OUTPUTS

TIME

DURATION

MEASUREMENTS

(DM44)

POWER

SOURCE

FREQUENCY

MEASUREMENTS

(DM44) 58

ENVIRONMENTAL

TIME

DIFFERENCE

BETWEEN

TWO

PULSES DM44

DIGITAL

MULTIMETER

FROM

DIFFERENT

SOURCES

(DM44) 58

RESISTANCE

RISETIME

(DM44)

TIME

MIX

(DM44)

1/TIME

TEMPERATURE

OPERATOR'S

SPECIFICATIONS

VOLTAGE

I 475A

OSCILLOSCOPE

VERTICAL

TRIGGERING

ACCESSORIES

DIFFERENTIAL

TIME

MEASUREMENT

STANDARD

ACCESSORIES

(BASIC

475A)

OPTIONAL

ACCESSORIES

DIFFERENTIAL

TIME

MEASUREMENT

(DM44)

HORIZONTAL

OPTIONS

X-Y 64

OPTION

4 69

CALIBRATOR

OPTION

7 69

475A/DM44

Operators

ill

LIST OF ILLUSTRATIONS I

Page Page I

Fig.

Regulating

range

selector

and

line

Fig. 17.

Common-mode

rejection. 36

fuse. 3 Fig. 18.

Time

duration.

38 I

Fig. 2. Vertical

controls,

connectors,

and Fig. 19. Risetime. 39

indicators.

4 Fig. 20.

Time

difference

between

two

pulses

Fig.

Display

and DM44

controls,

from

different

sources. 40

connectors,

and

indicators.

6 Fig. 21. Phase

difference.

43 I

Fig.

Trigger

controls,

connectors,

and Fig. 22.

High-resolution

phase

difference.

indicators

. 8 Fig. 23. Pulse jitter.

Fig. 5.

Trigger

controls

connectors,

and

Fig.

24.

Delayed sweep

magnification.

46 I

indicators.

Fig. 25.

Time

difference

between repetitive

Fig. 6.

Horizontal,

calibrator,

and

power

pulses. 49

controls,

connectors

, and

indicators.

Fig.

Time

duration.

Fig.

Rear panel and left side panel

controls,

Fig. 27.

Time

difference

between

two

pulses I

connectors,

and

indicators.

from

different

sources.

Fig.

Resistance.

Fig. 28. Risetime.

Fig.9.

Volts.

Fig. 29.

Time

difference

between repetitive I

Fig. 10.

Temperature.

pulses.

Fig.

. Probe

compensation

Fig. 30.

Time

duration

and

frequency

Fig.

Basic

475A

timing

check

. 30

measurements

Fig.

. DM44

timing

check

Fig.

Time

difference

between

two

pulses I

Fig.

14.

Peak-to-peak voltage

a waveform.

from

different

sources.

Fig. 15.

Instantaneous

voltage

measurements.

Fig. 32. Risetime.

Fig. 16.

Algebraic

addition.

475A/DM44

Operators

I LIST OF TABLES

I Page Page

TABLE

Regulating

Ranges 2

TABLE

Centigrade

to Fahrenheit

Conversion

TABLE

2 Resistance Ranges

TABLE

5 DM44 Delayed Sweep

Displays

TABLE

3 Volts Ranges

I @

475A/DM44

Operators v

475A

Oscilloscope

with

DM44

Digital

Multimeter.

475A1DM44 Operators @

I·

BEFORE

OPERATING

INTRODUCTION

The

Tektronix

475A

Oscilloscope

dual-channel

portable

instrument.

The

dual-channel

dc-to-250

MHz

vertical

system

provides

calibrated

deflection

factors

from

millivolts

volts/division

The

sweep

trigger

circuits

are

capable

stable

triggering

over the full

bandwidth

capabilities

the

vertical

deflection

system.

The

horizon-

tal

deflection

system

provides

calibrated

sweep rates

from

0.5

second

to 0.

microsecond

division

along

with

delayed sweep features

for

accurate

relative-time

measurements. A X10

magnifier

extends

the

calibrated

sweep

rate

nanosecond/division

The

instrument

operates

over

wide

variation

line

voltages and

frequencies

Maximum

power

consumption

about

100

watts

The

Tektronix

DM44

Digital

Multimeter

measures 0

ohm

megohms,

volt

to 1200

volts

-),

(using

the

temperature

probe)

-55°C to

+150°C

The

measurement

displayed

a 3-1/2

digital

display

while

the

oscilloscope

operates

normally

The

digital

multimeter

and

oscilloscope

combine

provide

digital

readout

the

time

between

any

two

points

on the

oscilloscope

display.

Both

time

measure-

ment

points

are

displayed

on the

crt

at the same

time

The

TIME

function

can

provide

direct

measurement

frequency.

SAFETY

INFORMATION

The

instrument

designed

to operate from a

single-

phase

power

source

with

one

the

current-carrying

conductors

(the

Neutral

Conductor)

ground

(earth)

potential.

Operation

from

power

sources

where

both

current-carrying

conductors

are live

with

respect to

ground

(such as phase-to-phase on a three-wi

system)

not

recommended, since

only

the Line

Conductor

has

over-current

(fuse)

protection

within

the

instrument.

The

instrument

has a

three-wire

power

cord

with

three-terminal

polarized

plug

for

connection

the

power

source

and safety-earth.

The

ground

(earth) terminal

the

plug

directly

connected

the

instrument

frame.

For

electric-shock

protection,

insert

this

plug

only

in a mating

outlet

with

a safety-earth

contact.

475A/OM44

Operators 1

OPERATING VOLTAGE

This

instrument

may

damaged

operated

with

the line voltage

selector

switch

or the

regulating

range

selector

set

for

the

wrong

applied

line voltage

the

wrong

line fuse is

used

Line Voltage Selection

This

instrument

operates from

either

a 115-volt

230-

volt

nominal

line

voltage

source, 48 to 440 hertz.

convert

from

one

nominal

line

voltage

range to the other,

move the Line Voltage

Selector

switch

(located

side

panel) to

indicate

the

correct

nominal

voltage. A 115-to-

230

volt

adapter

may be required

for

the

line-cord

plug

.Be

sure to use the

correct

line fuse for the line

voltage

selected (see

Table

Regulating Range Selection

The

Regulating Range

Selector

assembly (located on

the rear panel) is set

for

one

the line voltage ranges

shown

in Table 1. It also

contains

the

linefuse

for

overload

protection.

change

the

regulating

range:

Disconnect

the

instrument

from the

power

source

2. Loosen the

two

captive screws

that

hold

the cover

on the selector assembly; then

pull

remove the

cover

Pullout

the range

selector

switch

bar (see Fig. 1).

Select a range from Table 1

which

centered

about

the

average line voltage. Slide the bar to the desired

position

and

plug

it in. Push the

cover

on and

tighten

the

screws

TABLE

Regulating Ranges

Regulating Range

Range Selector 115-Volts. 230-Volts

Switch Position Nominal Nominal

(Switch bar

lower

holes) 99 to

121

volts

198

242 volts

M (Switch bar

middle

holes) 104

126

volts

207

253

volts

HI (Switch

bar

upper

holes) 108

132 volts 216

264 volts

Fuse Size 1.5 A

3AG

0.75 A

3AG

Fast-blow Fast-blow

2 475A/DM44 Operators @

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