Tektronix 2465 User manual

Tektronix,

Inc.

P.O.

Box

500

Beaverton,

Oregon

97077

070-3832-00

Product

Group

Tektronix

COMMITTED

EXCELLENCE

PLEASE

CHECK

FOR

CHANGE

INFORMATION

THE

REAR

THIS

MANUAL.

2465

OSCILLOSCOPE

OPERATORS

INSTRUCTION

MANUAL

Serial

Number

First

Printing

SEP

1982

Revised

JAN

1985

1982

Tektronix,

Inc.

All

rights

reserved.

Contents

this

publication

may

not

reproduced

any

form

without

the

written

permission

Tektronix,

Inc.

Products

Tektronix,

Inc.

and

its

subsidiaries

are

covered

U.S.

and

foreign

patents

and/or

pending

patents.

TEKTRONIX,

TEK,

SCOPE-MOBILE,

and

are

registered

trademarks

Tektronix,

Inc.

TELEQUIPMENT

registered

trademark

Tektronix

U.K.

Limited.

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

manufacture.

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:

BO00000

‘Tektronix,

Inc.,

Beaverton,

Oregon,

USA

100000

Tektronix

Guernsey,

Ltd.,

Channel

Islands

200000

Tektronix

United

Kingdom,

Ltd.,

London

300000

Sony/Tektronix,

Japan

700000

Tektronix

Holland,

NV,

Heerenveen,

The

Netherlands

2465

Operators

TABLE

CONTENTS

Page

LIST

ILLUSTRATIONS.................

SECTION

OPERATOR’S

CHECKS

AND

LIST

TABLES.............0.000000

005

ADLISTMENTS

INTRODUCTION.

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

5-1

OPERATORS

SAFETY

SUMMARY............

iii

INITIALSETUP..............

5-4

TRACE

ROTATION

ADJUSTMENT.

...........00-

5-1

ASTIGMATISM

ADJUSTMENT

...

5-2

SECTION

SPECIFICATION

AUTO

BALANCE

INTRODUCTION.

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

ADJUSTMENT...............

5-2

PERFORMANCE

CONDITIONS...

1-1

PROBE

LOW-FREQUENCY

COMPENSATION.............

5-2

MATCHING

CHANNEL

DELAY...

5-3

AMPLITUDE

CHECK

...........

5-4

SECTION

PREPARATION

FOR

USE

TIMING

CHECK.

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

5-4

SAFETY...

0.0.0

cece

eee

2-1

LINE

VOLTAGE

SELECTION....

2-1

SECTION

BASIC

APPLICATIONS

LINEFUSE.............000.

INDEX

PROCEDURES.......

6-1

POWERCORD...............

VOLTAGE

MEASUREMENT

.....

6-1

INSTRUMENT

COOLING

.......

VOLTAGE

RATIO............

6-2

START-UP.

......

000

eee

ALGEBRAIC

ADDITION

AND

REPACKAGING

FOR

SHIPMENT...

2-2

ELIMINATING

COMMON-MODE

SIGNALS

.......

00.0

eee

6-3

TIME

INTERVAL.

...........-

6-4

FREQUENCY

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

6-4

TIME

DIFFERENCE

BETWEEN

SECTION

CONTROLS,

CONNECTORS,

TWO

TIME-RELATED

PULSES...

AND

INDICATORS

TIME

RATIO..........-0000.

6-5

POWER

AND

DISPLAY.........

3-1

PHASE

DIFFERENCE

BETWEEN

VERTICAL...

0.0.0.0

cece

eee

eWe

TIME

RELATEDEIGNAGS

Lo.

MEASUE

GHENT.“

cal

oes

SMALL-ANGLE

PHASE

TRIGGER.

.......

0...

eee

3-7

BRPRBISIG

Es?

etod

shag

REAR

PANEL.............0-

3-9

RECO

ECT

ORG

sane

BEAROMIL

DISPLAY:

mie

Poy

SECTION

OPTIONS

AND

ACCESSORIES

INTRODUCTION.

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

7-1

PRION

Tit

7-1

OPTION

TA.

bub owl

7-4

SECTION

OPERATING

CONSIDERATIONS

POWER

CORD

OPTIONS........

7-1

GRATICULE..............-.

4-1

STANDARD

ACCESSORIES

.....

TIME

AND

VOLTAGE

OPTIONAL

ACCESSORIES......

MEASUREMENTS............

4-1

GROUNDING

.............0-

4-1

APPENDIX

POWER-UP

TESTS

SIGNAL

CONNECTIONS........

4-2

KERNEL

TESTS..............

A-1

INPUT-COUPLING

CAPACITOR

CONFIDENCE

TESTS..........

A-1

PRECHARGING..............

4-2

EXTERNAL

TRIGGERING......

4-2

CHANGE

INFORMATION

2465

Operators

Figure

2-1

3-1

3-2

3-3

3-4

3-5

3-6

3-7

4-1

5-1

6-1

6-2

6-3

6-4

6-5

6-6

6-7

6-8

6-9

Table

1-1

1-2

1-3

2-1

A-1

LIST

ILLUSTRATIONS

Page

Whe:24G5;Oscilloscoperyse..

6 a

Mme

See

MMR

Gow

MSL

and

Seas wont

Line

selector

switch,

line

fuse,

and

detachable

power

cord...........0

000

eee

ueae

2-2

Power-and

display

COntrols:

occu)

haces

bos

DES

ace

3-1

Vertical

controls

and

1OR

and

2connectors..........

0.000

eee

3-2

Channel

and

Channel

controls

and

connectors

and

CALIBRATOR

output

..........

3-3

Horizontal

and

delta

measurement

controls

.....

0.0...

eee

3-4

Trigger

controls

and

indicators...

2...

eee

3-7

Rear-panel

controls

and

connectors...

2...

ee et

eee

3-10

Readoutidisplay

IOCations..

5c es

Seas

6 6

wee

rele

3-11

Graticule

measurement

markings

......

0.0.0.0.

eee

eee eee

ee ee

eee

anne

4-1

Probe

low-frequency

compensation.

........

000.

eee

ee ee ee

eee eee eee

eee

5-3

Instantaneous

levels...

ete

eee

6-1

Voltageratios...

00...

tece

ees

wine's

0 8

UNE

Soe

Ewa

WUE

HRS

6-2

Eliminating

common-mode'signals

..4:..

ccc

tee

eee

HoT

6-3

Measuring

Wise:

tUMOS:

acre

«ie

ew oe

ewe

wile

eee

ome

allay

lee

sice

6-4

Time

difference

between

two

time-related

pulses

(cursor

method)

..............0008

6-5

Time

ratios

(duty

cycles)

....

eee

ee ee

6-6

Phase

difference

between

two

time-related

signals...

2.0...

eee

ee ee

eee

6-7

Small-angle

phase

difference

....

0...

eee

6-7

Time

difference

between

two

time-related

pulses

(delayed-sweep

method).............

6-9

Page

Electrical

Gharacteristicss.

see

baie

lee

aewe

BAS

wes

1-2

EnvironmentaliGharacteristics.

sestane

ooo

has

haters

BGS

we eb

wee

ewe

1-9

Mechanical:

Criaractenistics:

as)

Sees

ses

See

wwe

ees

1-10

Voltage,

Fuse,

and Power-Cord

Data...

1...

eens

2-3

Confidence

Test

Numbers

and

Descriptions

.........

0.0.0.0

eee

A-1

2465

Operators

OPERATORS

SAFETY

SUMMARY

The

general

safety

information

this

part

the

summary

for

both

operating

and

servicing

personnel.

Specific

warnings

and

cautions

will

found

throughout

the

manual

where

they

apply

and

not

appear

this

summary.

Terms

This

Manual

CAUTION

statements

identify

conditions

practices

that

could

result

damage

to the

equipment

other

property.

WARNING

statements

identify

conditions

practices

that

could

result

personal

injury

loss

life.

Terms

Marked

Equipment

CAUTION

indicates

personal

injury

hazard

not

imme-

diately

accessible

one

reads

the

markings,

hazard

property,

including

the

equipment

itself.

DANGER

indicates

personal

injury

hazard

immediately

accessible

one

reads

the

marking.

Symbols

This

Manual

This

symbol

indicates

where

applicable

cautionary

other

information

to be

found.

For

maximum

input

voltage

see

Table

1-1.

Symbols

Marked

Equipment

DANGER

—

High

voltage.

Protective

ground

(earth)

terminal.

PAN

ATTENTION

—

Refer

manual.

Power

Source

This

product

intended

operate

from

power

source

that

does not

apply

than

250

volts

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

receptable

before

con-

necting

the

product

input

output

terminals.

protective

ground

connection

way

of the

grounding

conductor

the

power

cord

essential

for

safe

operation.

Danger

Arising

From

Loss of

Ground

Upon

loss

the

protective-ground

connection,

all

acces-

sible

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.

Use

only

power

cord

that

good

condition.

For

detailed

information

power

cords

and

connectors

see

Table

2-1.

Use

the

Proper

Fuse

avoid

fire

hazard,

use

only

fuse

the

correct

type,

voltage

rating

and

current

rating

specified

the

parts

list

for

your

product.

Not

Operate

Explosive

Atmospheres

avoid explosion,

not

operate

this

product

explosive

atmosphere

unless

has

been

specifically

cer-

tified

for

such

operation.

Not

Remove

Covers

Panels

avoid

personal

injury,

not

remove

the

product

covers

panels.

not

operate

the

product

without

the

covers

and

panels

properly

installed.

2465

Operators

Tektronix

2485

sos

cscuscscon

The

2465

Oscilloscope.

3832-01

—

Section

1—2465

Operators

SPECIFICATION

INTRODUCTION

The

TEKTRONIX

2465

Oscilloscope

portable

300-MHz

instrument

having

four-channel

vertical

deflec-

tion

system.

Channel

and

Channel

provide

calibrated

deflection

factors

from

2mV

per

division

per

division.

For

each

these

channels,

input

impedance

selectable

between

two

values:

either

parallel

with

pF,

502

internal

termination.

Input-signal

coupling

with

1-MQ

impedance

can

selected

either

DC.

Channel

and

Channel

have

deflection

factors

either

0.1

0.5

per

division.

Each

these

channels

has

input

impedance

parallel

with

pF,

with

input-signal

coupling.

Trigger

circuits

enable

stable

triggering

over the

full

bandwidth

the

vertical

system.

The

horizontal

deflection

system

provides

calibrated

sweep

speeds

from

1.5s

per

division

500

per

division.

Drive

for

the

horizontal

deflection

system

obtained

from

choice

A, B

delayed,

alternated

with

delayed

sweeps,

(for

the

X-Y

display

mode).

The

2465

incorporates

alphanumeric

crt

readouts

of the

vertical

and

horizontal

scale

factors,

the

trigger

levels,

time-difference

measurement

values,

voltage-difference

measurement

values,

and

certain

auxiliary

information.

The

2465

Oscilloscope

shipped

with

the

following

standard

accessories:

Probe

packages

Snap-lock

accessories

pouch

Zip-lock

accessories

pouch

Operators

manual

Power

cord

(installed)

2-A,

250-V

fuse

Clear

plastic

crt

filter

Blue

plastic

crt

filter

(installed)

Front-panel

cover

Operators

pocket

reference

card

ees

For

part

numbers

and

further

information

about

both

standard

and

optional

accessories,

refer

“Options

and

Accessories’’

(Section

this

manual.

Your

Tektronix

representative

local

Tektronix

Field

Office

can

also

provide

accessories

information

and

ordering

assistance.

PERFORMANCE

CONDITIONS

The

following

electrical

characteristics

(Table

1-1)

are

valid

for

the

2465

when

has

been

adjusted

ambient

temperature

between

+20°C

and

+30°C,

has

had

warm-up

period

least

minutes,

and

operating

ambient

temperature

between

—15°C

and

+55°C

(unless

otherwise

noted).

Items

listed

the

‘Performance

Requirements”

column

are

verifiable

qualitative

or quantitative

limits

that

define

the

measurement

capabilities

of the

instrument.

Environmental

characteristics

are

given

Table

1-2.

The

2465

Oscilloscope

meets

the

environmental

require-

ments

MIL-T-28800C

for

Type

III,

Class

Style

equipment,

with

the

humidity

and

temperature

require-

ments

defined

paragraphs

3.9.2.2,

3.9.2.3,

and

3.9.2.4.

Mechanical

characteristics

the

2465

are

listed

Table

1-3.

1-1

Specification—2465

Operators

Table

1-1

Electrical

Characteristics

Performance

Requirements

VERTICAL

DEFLECTION

SYSTEM—CHANNEL

AND

CHANNEL

Deflection

Factor

Range

per

division

per

division

1-2-5

sequence

steps.

Accuracy

+15°C

+35°C

Within

+2%

any

VOLTS/DIV

setting

for

5-division

signal

centered

the

screen.

—15°C

+15°C

and

+35°C

+55°C

Add

+15°C-to-+35°C

specification.

Accuracy

(using

cursors

over

entire

graticule

area)

+15°C

+35°C

(1.25%

reading

0.03

division

signal

aberration).

—15°C

+15°C

and

+35°C

+55°C

Add

reading

+15°C-to-+35°C

specification.

Range

+ 8

times

the

VOLTS/DIV

switch

setting.

Variable

Range

Continuously

variable

between

VOLTS/DIV

switch

settings.

Extends

deflection

factor

the

per

division

setting

least

12.5

per

division.

Frequency

Response

Six-division

reference

signal

from

terminated

50-Q

system,

with

VAR

VOLTS/DIV

control

calibrated

detent.

—3

bandwidth

—4.7

bandwidth

with

standard-accessory

with

50-2

external

VOLTS/DIV

probe

internal

termination

setting

50-2

termination

1-MQ

input

—15°C

+55°C

2mV

100

MHz

100

MHz

—15°C

+35°C

greater

300

MHz

300

MHz

+35°C

+55°C

greater

250

MHz

250

MHz

Coupled

Lower

—3

Point

Probe

less.

10X

Probe

less.

Step

Response

Rise

Time

1.17

less

for

VOLTS/DIV

switch

settings

and

(calculated).

3.5

less

for

VOLTS/DIV

switch

setting

of 2

(calculated).

Rise

time

calculated

from:

bandwidth

rise

time =

0.35.

Common-mode

Rejection

Ratio

(CMRR)

least

20:1

MHz

for

common-mode

signals

eight

divisions

less,

with

VAR

VOLTS/DIV

control

adjusted

for

best

CMRR

kHz

VOLTS/DIV

switch

settings

from

least

20:1

MHz

for

the

switch

setting.

1-2

REV

JAN

1984

—~

—

Specification—2465

Operators

Table

1-1

(cont)

REV

SEP

1984

Characteristics

Performance

Requirements

VERTICAL

DEFLECTION

SYSTEM—CHANNEL

AND

CHANNEL

(cont)

Channel

Isolation

100:1

greater

attenuation

the

deselected

channel

100

MHz;

50:1

greater

attenuation

300

MHz,

for

eight-division

input

signal

from

per

division

500

per

division,

with

equal

VOLTS/DIV

switch

settings

both

channels.

Displayed

Channel

Signal

Delay

with

Respect

Adjustable

through

range

least

—500

+500

ps.

Channel

Signal

Input

and

MQ)

Resistance

1MQ

+0.5%.

Capacitance

pF.

Maximum

Input

Voltage

400

(dc

peak

ac).

800

p-p

kHz

less.

Input

(50

Resistance

502

+1%.

VSWR

(DC

300

MHz)

1.3:1

less.

Maximum

Input

Votlage

rms;

0.5

W-seconds

during

any

1-s

interval

for

instantaneous

(DC

Coupling

Only)

voltage

from

Maximum

pulse

duty

factor

and

maximum

pulse

duration

for

one

second

interval

that

produce

0.5

W-seconds

into

input

with

—™~

rms

maximum

allowable

input

voltage

are

determined

from

the

following:

;

Maximum

duty

factor

applied

pulse

; . .

Maximum

duration

applied

pulse

sec.

pulse

Cascaded

Operation

SIGNAL

OUT

into

Channel

input;

coupled

using a

50-Q

RG-

58C/U

coaxial

cable,

terminated

the

Channel

input.

Channel

and

Channel

VOLTS/DIV

switch

set to

mV.

Bandwidth

MHz

greater.

Deflection

Factor

400

per

division

10%.

VERTICAL

DEFLECTION

SYSTEM—CHANNEL

AND

CHANNEL

Deflection

Values

0.1

per

division

and

0.5

per

division.

Accuracy

Within

10%.

—~

1-3

Specification—2465

Operators

Table

1-1

(cont)

Characteristics

Performance

Requirements

VERTICAL

DEFLECTION

SYSTEM—CHANNEL

AND

CHANNEL

(cont)

Frequency

Response

(3-dB

Bandwidth)

—15°C

+35°C

Six-division

reference

signal,

from

terminated

50-Q

system.

—3

Bandwidth

With

standard-accessory

probe

—4.7

Bandwidth

With

external

50-02

termination

300

MHz

300

MHz

+35°C

+55°C

250

MHz

250

MHz

Step

Response

Rise

Time

1.17

less

(calculated

from

bandwidth).

Channel

Isolation

50:1

greater

attenuation

the

deselected

channel

100

MHz

with

eight-division

input

signal.

Input

and

Resistance

1MQ

+1%.

Capacitance

pF.

Maximum

Input

Voltage

400

(dc

peak

ac);

800

p-p

kHz

less.

VERTICAL

DEFLECTION

SYSTEM—ALL

CHANNELS

Low-frequency

Linearity

0.1

division

less

compression

expansion

two-division,

center-

screen

signal

when

positioned

anywhere

within

the

graticule

area.

Bandwidth

Limiter

Reduces

upper

3-dB

bandpass

limit

MHz

MHz.

Vertical

Signal

Delay

least

the

sweep

displayed

before

the

triggering

event

displayed.

Chopped

Mode

Switching

Rate

Vertical

display

switches

sequentially

through

the

selected

channels

the

chop

switching

rate.

the

SEC/DIV

switch

set

sweep

speeds

outside

the

range

per

division

per

division,

the

switching

rate

MHz

+0.2%

(dual-channel

cycle

rate

500

kHz).

the

SEC/DIV

switch

set

within

the

range

per

division

per

division,

the

switching

rate

2.5

MHz

+0.2%

(dual-channel

cycle

rate

1.25

MHz).

all

sweep

speeds,

the

chop

switching

rate

desynchronized

with

the

sweep

frequency

minimize

waveform

breaks

when

viewing

repetitive

signals.

TRIGGERING

Minimum

P-P

Signal

Amplitude

for

Stable

Triggering

from

Channel

Source

Coupled

0.35

division

from

MHz,

increasing

division

300

MHz,

1.5

divisions

500

MHz

ADD

MODE.

NOISE

REJ

Coupled

1.2

divisions

less

from

MHz,

increasing

divisions

300

MHz,

4.5

divisions

500

MHz

ADD

MODE.

Coupled

0.35

division

from

MHz,

increasing

division

at300

MHz,

-—~

1.5

divisions

500

MHz

ADD

MODE.

Attenuates

signals

below

Hz.

REV

SEP

1984

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