Tektronix 502A Instruction Manual

INSTRUCTION

MANUAL

Serial

Number

__________

Tektronix,

S.W.

070-382

Inc.

Millikan

Way

•

P.

O.

Box

500

•

Beaverton,

Oregon

•

Phone

Ml

4-0161

•

Cables:

Tektronix

463

All

Tektronix

against

ship

manufactured

ranted

ranty

with

for

Any

mentioned

your

defective

one

for

the

questions

Tektronix

WARRANTY

instruments

year.

in

life

materials

Tektronix

our

of

the

with

above

Field

and

own

plant,

instrument.

respect

should

Engineer.

are

warranted

workman

transformers,

are

to the

be

taken

war

war

up







Tektronix

service

fore

ment

tronix

area.

fastest

instrument

requests

ileges

is

all

parts

Field

This

possible

Specifications

reserved.

Copyright

Beaverton,

States

of

Contents

produced

of

the

copyright

repair

geared

requests

should

Office

procedure

Type

for

parts

©

Oregon.

America.

of

this

in

any

and

directly

for

repairs

be

or

Representative

service.

and

Serial

or

service.

and

1963

Printed

publication

form

owner.

replacement-part

to

the

field,

and

directed

will

price

by

All

without

assure

Please

number

Tektronix,

in

rights

may

to

include

change

the

not

permission

there

replace

the

Tek

in

your

you

the

the

with

priv

Inc.,

United

reserved.

be

re

all









CONTENTS

Section

Section

Section

Section

Section

Section

1

Characteristics

2

Operating

3

Circuit

4

Maintenance

5

Calibration

6

Parts

Diagrams

Description

List

Instructions

Procedure

and

Schematic

General

The

Tektronix

dual-beam

bined

502A

medium

sensitivities.

operated

or

signals.

makes

and

with

may

with

the

scientific

displays

high

be

used

sensitivities,

Vertical

with

single-ended

differential

The

wide

Type

applications.

VERTICAL-DEFLECTION

Characteristics

Direct

connection

With

P6006

Probe

9

pf.

Type

502A

input

to

inputs

at

—

with

and

range

—

502A

a

wide

sensitivity.

provide

single-beam

amplifiers

inputs

for

of

adaptable

each

1

megohm

10

megohms

Oscilloscope

range

In

dual-beam

for

both

for

conventional

cancellation

operational

to

a

input

terminal

paralleled

paralleled

of

sweep

addition,

X-Y

X-Y

displays

beams

of

modes

great

SYSTEM

provides

rates

the

displays

may

operation,

at

linear

common-mode

available

many

industrial

by

47

pf.

by

approx.

com

Type

high

be

SECTION

1

CHARACTERISTICS

20

v/cm.

For

ac-coupling,

peak-to-peak

peak



at

from

The

with

inputs

wave

frequency

from

5

a

of

v/cm

DC

signal

.5

common

common

one

as

DC

from

v/cm

to

vertical

has

stated

20

sine-wave

a

Common

Sensitivity

Setting

.2

VOLTS

PER

CM

.2

mVOLTS

PER

CM

†

.1

mVOLTS

PER

CM

.2

VOLTS

PER

CM

.2

mVOLTS

PER

.1

mVOLTS

CM

PER

CM

0.1

mv/cm,

to

2

v/cm.

mode

constant

in

Frequency

1

kc

1

kc

1

kc

400

100

50

the

v/cm,

rejection

signal

amplifier

the

table

Mode

kc
kc
kc

signal

to

.2

v/cm,

and

200

which

simultaneously.

amplitude

below.

Rejection

Ratio

1

00:1

20,000:1

40,000:1

50:1

1000:1

2000:1

limits

ratios

20

volts

are

is

applied

of

2

Ratio

(Sine-wave

held

amplitude

are

2

volts

volts

peak-to-

peak-to-peak

measured

to

The

volts

and

output

at

a

constant

of

2

volts)

both

sine



a

Deflection

Seventeen

20

v/cm

accurate

Continuously

0.1

mv/cm

variable

is

SENSITIVITY

Frequency

Frequency

with

settings

are

as

follows:

.1

.2

1

50

Differential

The

rejection

voltage

at

limits.

The

with

respect

trol

from

0.1

to

ground

for

200

volts

with

factors

calibrated

within

variable

to

approximately

used

the

control

response

response

of

the

mv/cm

mv/cm

mv/cm

mv/cm

.2

v/cm

input

ratios

the

Input

signal

limits

to

ground

mv/cm

settings

respect

deflection

3%.

deflection

frequency

will

be

characteristics

SENSITIVITY

rejection

specified

connector

for

d

c

for

settings

to

.2

v/cm,

from

.5

to

ground

factors are

50

v/cm.

response

slightly

below

does

coupling

+

v/cm

for

factors

in

reduced.

of

controls.

ratio

not

of

the

or

—

to

2

settings

from

available

However,

each

the

Type

Typical

50

kc

100

kc

200

kc

400

kc

1

m

apply

exceed

are,

+

SENSITIVITY

20

volts

v/cm,

from

0.1

range

c

if

or

with

and

mv/cm

when

502A

readings

the

specified

—

+

5

v/cm

of

signal

2

volts

respect

or

from

the
the

vary

con

†

A

rejection

ratio

of

40,000:1

can

only

be

obtained

if

the

DC

cases,

from

to

BAL

control

has

been

properly

adjusted.

to

HORIZONTAL-DEFLECTION

Sweep

1

Twenty-one

5

sec/cm.

Accuracy

within

Continuously

μ

sec/cm

rates

typically

3%

of

to

approximately

calibrated

within

full

scale.

variable

sweep

1

sweep

%

2.5

sec/cm.

rates

of

rates

full

from

scale;

are

SYSTEM

1

μ

sec/cm

in

all

available

Magnifier

Expands

magnified

which

1

μ

do

isec/cm.

sweep

sweep

not

2,

rates

exceed

5,

accurate

the

10,

or

20

within

maximum

times.

3%

calibrated

Calibration

for

sweep

rate

rates

of

of

Unblanking

DC

coupled.

Triggering



—

to

Internal

on

External

Triggering

UPPER

either

—

a

the

—

0.2

BEAM,

signal

signal

UPPER

volts

signal

LOWER

requirements

producing

or

LOWER

to

10

volts

sources

BEAM,

2

mm

BEAM.

on

either

external,

vertical

polarity.

or

line.

deflection

@2

1-1

Characteristics

Input

characteristics

AC

coupled

DC

coupled

—

—

—

Type

1

megohm

1

megohm.

502A

at

TRIGGER

in

series

with

INPUT

0.01

connector

μ

f.

Graticule

Edge

lighted

1

cm

divisions

—

with

marked

in

10

vertical

and

10

horizontal

2

mm

markings

on

the

baselines.

Horizontal

With

UPPER

deflection

With

Deflection

are

Input

1

Deflection

external

within

characteristics

megohm

Cathode-ray

Type

T5021P2

Each

vertical

scan.

Voltage

Square

Six

50

calibrator

wave

calibrated

volts

peak-to-peak.

input

BEAM

plates:

factors

factors

±5%.

shunted

OTHER

tube

—

beam

output

voltage

amplifier

of

input

of

by

CHARACTERISTICS

P

1

,

P7,

covers

at

connected

0.1

mv/cm

connected

0.1

v/cm

at

EXTERNAL

approximately

and

P11

a

minimum

approximately

steps

from

Accuracy

to

to

to

horizontal

2

v/cm

phosphors

of

0.5

—

within

20

mv

70

v/cm

1

to

in

kc.

pf.

8

to

crt

horizontal

in

17

amplifier:

5

steps

which

connector

optional.

cm

of

vertical

3%.

steps.

Power

Line

cycles.

Power

voltage

—

requirements

Approximately

Mechanical

Ventilation

Construction

cabinet.

Dimensions

Weight

—

52

Accessories

2

—

Type

2

—

Binding

1

—

Light

filter.

2

—

Instruction

1

—

Test

lead,

1

—

3

to

2-wire

1

—

3-conductor

—

105

to

characteristics

—

filtered,

—

aluminum-alloy

—

23

½

"

long,

pounds.

included

P6006

attenuator

post

adapters,

manuals.

012-031.

adapter,

power

125

volts,

300

watts.

forced-air.

11¼"

probes,

103-013.

cord,

or

chassis

wide,

013-004.

161-010.

210

to

010-125.

15"

and

250

high.

volts,

50-60

three-piece

1-2

Shipping

It

is

very

the

vertical

shipping

the

small

instrument

on

block

vertical

each

The

tug

positions.

shipping

Cooling

A

fan

502A

Oscilloscope

over

the

placed

so

must

be

the

interior

Blocks

important

amplifier

blocks

amplifiers

with

a

will

remove

vertical

blocks

maintains

components.

that

the

kept

clean

temperature

are

narrow

pair

amplifier.

safe

by

air

to

to

remove

prior

firmly

of

plier

each

of

See

should

operating

circulating

Therefore,

intake

permit

should

to

using

inserts,

in

towards

the

be

is

adequate

rise

the

shipping

the

which

place

two

shipping

figure

2-1

kept

for

temperature

air

through

the

not

blocked.

too

high

oscilloscope.

are

used

during

the

outside

for

future

instrument

The

air

circulation.

for

some

blocks

to

shipment.

of

blocks

the

shipping

use.

in

the

a

filter

must

air

reason,

from

hold

used

Type

and

filter

The

the

be

SECTION

2

OPERATING

INSTRUCTIONS

a

thermal

cutout

switch

will

disconnect

it

A

If

disconnected

For

proper

must

be

cording

Power

The

operate

nominal

line

volts.

when

other

made.

should

be

the

connections

Voltages

waveforms,

cause

unstable

voltage

until

air

in

to

Requirements

regulated

with

line

For

if

circulation,

ploce.

Be

directions.

power

line

voltages

volts,

or

Proportionate

nominal

maximum

near

the

for

outside

may

cause

operation.

indications

the

temperature

sure

the

supplies

from

210

line

line

voltage

dependability

center

the

various

of

these

hum

Be

such

as

from

of

or

the

sure

bottom

bottom

105

to

250

voltage

this

line

limits,

jitter

these

the

drops

panel

in

the

to

volts

primary

and

long

range.

voltages.

or

on

to

check

are

power

to

and

Type

125

at

variations

connections

life

Fig.

poor

the

trace

for

present.

a

sofe

side

is

installed

502A

volts,

234

the

2-2

line-voltage

proper

and

panels

at

nominal

voltage

and

keep

value.

ac

will

117

apply

are

shows

may

line



Fig.

2-1.

The

position

of

the

shipping

blocks

for

each

vertical

amplifier.

2-1

Operating

Instructions

—

Type

502A

Fig.

2-2.

or

60

cycle

Fan

Connections

The

manner

voltage.

connected

Fuse

Use

a

60

cycle

B

l

o

fuse.

a

2

amp.,

3AG,

S

The

power

operation.

in

which

110-124

shown

transformer

For

as

Requirements

4

amp.,

3AG,

operation;

For

3AG,

l

o-B

for

220,

234

Fast-Bio

l

o

fuse.

or

in

Fast-Bio

50

or

the

220-248

Fig.

cycles

248

fuse;

fan

has

2-3.

for

is

fuse

volt,

two

wired

volt

use

50

extra

depends

operation,

for

110,

a

3.2

60

cycle

cycles

windings

117

amp.,

operation,

use

on

or

a

permitting

the

the

124

3AG,

1.6

line

fan

volt

S

use

amp.,

l

is

o-

nominal

primary

Input

Selection

On

the

ended

inputs

LOWER

Selector

of

input

Waveforms

position

input

A

you

are

it

is

probable

obtained

voltages

Type

502A

to

or

UPPER

switches

connections

applied

on

the

face

are

displayed

not

aware

that

from

an

of

either

BEAM

to

to

of

of

you

input

the

110, 117,

oscilloscope,

the

A

amplifiers

corresponding

will

depend

input

B

the

crt

in

the

this

difference

will

improperly

to

the

124,

or

are

B

upon

displayed

while

normal

B

220,

234

you

can

input

connectors

by

rotating

position.

the

waveforms

upright

in

the

evaluate

connector.

or

connect

display

in

input

248

volts,

single-

of

the

The

desired.

an

inverted

applied

position.

connectors,

the

the

Input

choice

results

50

to

If

2-2

Fig.

2-3.

Fan

connections

for

the

various

line

voltage

connections.

Fig.

2-4.

input

connector

forms

applied

Differential

input

connectors

of

the

are

displayed

B

input

difference

inate

common

Input

Inputs

to

A

to

inputs

input

selector

is

algebraically

is

displayed.

Coupling

are

input

of

on

mode

the

vertical

displayed

connector

must

one

the

signals

be

amplifier.

switch,

crt.

added

This

amplifiers.

in

the

B

are

connected

the

In

the

feature

within

Waveforms

upright

position,

inverted.

to

both

In

the

A

and

corresponding

A-B

(DIFF)

to

the

A

permits

specified

the

position,

input

you

limits.

B

applied

while

wave

A

and

positions

waveforms

the

and

the

to

elim

Operating

Input

Connections

Here

are

some

precautions

ing

your

oscilloscope

1.

Avoid

tic

connected

leads

shielded

the

being

purposes.

ranges

to

high



2.

tions

have

encountered

B

3.



to

input

megohm

feet

or

capacitive

you

the

errors

coupling

input connector

As

Consider

the

of

more.

might

next

to

of

appreciable

leads

tested.

Special

of

the

amplifier

nearly

in

the

a

load

input

connectors

shunted

shielded

In

loads

want

section.

equipment

in

the

on

in

readings

between

the

input

length

are

used,

shield

Coaxial

care

oscilloscope

gain.

as

possible,

it

which

normal

effect

circuit

of

can

by

cable,

many

cases,

are

not

to

use

to

operation.

of

be

a

the

you

the

signal

due

circuits,

connector.

are

the

shields

and

to

cables

are

must

be

due

to

simulate

being

tested.

is

approximately

loading

the

oscilloscope.

represented

capacitance

capacitance

the

effects

negligible,

a

probe

Instructions

should

observe

source:

to

stray

particularly

In

general,

unsuited

for

should

the

chassis

recommended

taken

in

the

the

low

actual

The

upon

the

by

of

47

may

of

these

and

in

the

manner

—

Type

electric

in

this

be

grounded

of

the

high

signal

operating

equipment

equal

signal

The

circuit

a

resistance

pf.

With

well

resistive

to

minimize

described

502A

in

connect

or

magne

the

leads

unshielded

use.

When

equipment

for

many

sensitivity

level

condi

should

to

the

source

at

a

be

100

them,

and

load

due

the

of

few

and





to



1

pf

in

Input

ac

or

the

corresponding

ac

and

amplifier

voltage

It

is

sometimes

the

d

c

With

ac

input

connector

time

allowing

Fig.

2-5.

amplifier.

ically

added

the

resultant

signals

d

c

coupled

d

c

components

circuits.

level

as

component.

coupling,

the

Rejection

The

waveform

to

waveform

well

neither

to

the

to

the

by

positions.

This

as

In

such

a

capacitor

block

ac

component

of

a

waveform

is

vertical

placing

of

the

permits

the

necessary

cases

the

d

common

applied

displayed

amplifiers

the

DC

coupling

input

you

amplitude

nor

ac

is

placed

c

component

to

mode

to

input

applied

to

on

the

Input

signal

to

of

desirable

coupling

be

displayed.

signal

connector

input

screen

can

Selector

applies

measure

the

should

in

series

while

by

connector

of

to

the

ac

component.

to

at

the

B

the

be

either

switch

both

vertical

the

display

be

used.

with

the

same

differential

is

algebra

A

crt.

the

the

and

Use

of

in

d

c

An

loading,

amplitude

to

probe.

A

Type

of
of

10

has

which

this

in

If

portions,

of

Select

Probe

An

body,

capacitance

accuracy

ment

To

and

signal

CAL

display



Loosen

Now

Probes

attenuator

at

multiply

Type

502A

the

Type

megohms

an

attenuation

may

rating,

damage

the

waveform

it

the

probe

a

ground

Adjustment

adjustable

is

used

of

should

make

SENSITIVITY

of

suitable

OUT

several

the

while

probe

the

same

measurements

the

observed

P6006

Probe

Oscilloscope.

5

0

2A,

the

shunted

be

applied

either

in

to

the

components

being

is

generally

to

the

point

capacitor,

to

compensate

from

one

pulse

and

be

checked

this

adjustment,

Controls

amplitude.

Connector

holding

cycles

locking

onto

lessens

time

reducing

with

amplitude

is

Connected

probe

by

ratio

to

the

peak

necessary

chassis

which

instrument

transient

and

of

sleeve

the

both

sensitivity.

an

attenuator

by

furnished

presents

approximately

of

10:1.

probe

ac

volts

inside

displayed

of

the

is

near

which

for

to

measurements,

to

equipment

is

slight

frequently.

set

the

AMPLITUDE

on

the

Type

Touch

adjust

the

the

waveform.

several

knurled

part

capacitive

the

attenuation

as

an

to

the

an

input

9

The

maximum

is

600

or

d

c

volts,

the

probe

contains

clip

the

the

probe

built

variations

another.

502A

the

probe

TIME/CM

turns.

near

and

When

probe,

accessory

Input

characteristic

picofarads

volts.

Exceeding

may

body.

fast

ground

being

connection.

into

the

To

insure

this

CALIBRATOR

to

display

tip

Control

(See

figure

the

cable,

resistive

making

be

sure

of

the

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Description

Circuit

Circuit.

Trigger

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3-2.

Fig.

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R424

provides

sensitivity

TIVITY

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Circuit

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DC

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R495

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age

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volt

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SENSITIVITY

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plifier,

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switch

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develop

plate

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control

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stage

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drive

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switch

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horizontal-deflection

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triggering

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positive

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stage

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R455

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position.

is

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stage

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instrument

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voltage

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infinite

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R456,

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balances

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means

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used

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gain

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negative

stage;

switch

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high-frequency

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PLATE

plates

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Time-Base

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plate

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low

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response

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switch

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DC),

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coupled

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vibrator

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voltage

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plate

voltage

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down

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spike

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signal

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power

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output.

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signal

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V24

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repetition

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switch

line

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output

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SW20.

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state,

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signal

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TRIGGER

circuit

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multivibrator

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the

rectangular

rate

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source

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pulse,

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pulse

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differentiation

output

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position

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source

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signal.

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VI6IB

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amp

Generator.

Sweep

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3-3.

Fig.

J

-I50V

Description

Circuit

150

V

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sO

l

co

at

the

plate

the

negative

brator

circuit.

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signal

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amplified

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grid

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the

input

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input

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automatic

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verts

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plish

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free-running

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gram,

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nal.

ven

rise,

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voltage

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portion

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signal

on

signal

polarity

placing

the

grid

opposite

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current

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hysteresis

LEVEL

tube

to

voltage

by

select

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the

counterclockwise

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recurrent

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coupling

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when

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addition

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example,

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cutoff.

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grids

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R32-C31

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in

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signal

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either

circuit.

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grid of

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at

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output

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switch

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signal

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signal

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signal

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grid

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amplifier.

in

polarity

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voltage

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point

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mode

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mode

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connected

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plate

circuit

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must

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input

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positive-going

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switch

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amplifier

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to

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tubes,

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of

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at

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plate

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triggering,

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grid

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switch

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voltage

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voltage

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input

plate

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signal.

at

the

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other

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circuit.

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circuit.

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is

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circuit

output

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grid

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adjusted

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waveform

circuit

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AUTOMATIC

from

configuraton.

of

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dc-coupling

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circuit

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at

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plate

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20

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amplifier,

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input

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level

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operator

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grid

circuit

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automatic

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Circuit

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voltage

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tion

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plate

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generates

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adjusted

to

the

Time-Base

waveform

This

to

the

Positive-going

of

the

circuit.

Time-Base

circuit,

Runup

in

the

switch

V145A

in

V161A,

the

off

establishes

negative

then

the

Timing

The

Hold-Off

and

V145B,

Hold-Off

Switch

the

MODE

is

V145A

divider

quiescent

by

a

d

of

the

Runup

d

c

network

Runup

above

characteristic

the

quiescent

at

about

C.F.,

and

of

the

cause

to

its

will

start

the

V45B

below

its

approximately

circuit

can

of

triggers,

vertical

TIME-BASE

which

waveform

produce

process,

circuit,

Lockout

SW126.

and

the

the

conducting

c

network

neon

C.F.,

the

—

a

Miller

trigger

other

to

a

point

its

plate

the

grid of

dropping

the

50-cycle

just

with

without

continues

of

which

any

signal

system.

GENERATOR

a

negative-going

to

the

are

are

consists

Sweep-Gating

are

the

circuit

V

1

61

B,

C160

and

capacitors

and

R180,

NORMAL,

its

plate

cathode-follower

the

cathode

Miller

plate

the

grid-cathode

a

voltage

a

value

thus

over

grid of

is

about

drop

of

Multivibrator

is,

V135A

As

V145A

—

rise

exponentially

where

voltage

V45A.

exponentially.

circuit

has

triangular

described,

repetitive

readjustment.

at

any

triggering

indicates

that

Time-Base

in

the

triggering

in

the

also

produced

not

used

of

four

Multivibrator,

circuit.

The

transistor

circuit

V135B.

are

the

the

Disconnect

the

Timing

of

the

Hold-Off

C

A

or

the

quiescent

voltage

is

resistor

Runup

Tube

and

grid.

Diodes.

at

that

the

the

Miller

25-volts

across

the

about

4-32

at

the

grid

will

conducts

Type

502A

from

plate

current

drops,

which

The

voltage

When

completed

waveform.

the

hori

signals,

over

When

approximately

signal

that

the

might

be

con

rectang

Generator

grid

circuit

pulses

proper

time

in

the

in

the

opera

main

circuits:

main

com

QI

24

and

consists

The

essential

Miller

Runup

Diodes

Resistor

C.F.'s

1

80

and

C

1

B

(shown

state

down.

This

V135B,

the

R144.

is

deter

This

network

impedance

The

purpose

the

plate

the

tube

will

linear

region,

Runup

Tube

bias

on

the

neon

lamp.

volts

at

the

of

V135A,

to

switch

be

cutoff

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its

plate

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3-7

Circuit

Description

—

Type

502A

voltage,

to

starts

cathode

of

end

the

a

voltage

plained,

provide

the

nearly

Timing

tooth

C.F.

C

TIME/CM

current

the

charged

selected

timing

across

Diodes,

The

is

diverted

force

the

grid

positive.

the

of

Miller

The

Miller

grid

Runup

Maintaining

output

The

V

1

1

60

and

Timing

The

and

moves

current

the

of

of

Runup

C

1

voltage

change

the

a

constant

Capacitor

linear

61

B

that

and

to

circuit

the

length

moves across

SWP

LENGTH

linearly

at

rise

in

the

This

will

and

at

of

V135A

a

point

Multivibrator

with

the

plate

at

then

and

61

B.

The

under

generated

a

reversal

resistance

than

capacitor

than

Runup

produces

which

point.

Hold-Off

increase

that

VI83A

voltage

grid

to

Gating

state

at

voltage

diodes

discharge

R148,

V

1

arly,

it

for

The

less

The

larger

Miller

This

during

ing

The

from being

the

negative.

available

into

grid of

the

the

C.F.

60

to

Runup

Runup

small

nearly

C.F.

the

voltage

rise

is

used

Timing

switch

charges

Switch,

the

cover

determines

crt.

of

the

the

voltage

at

the

will

where

V135A

of

the

conduct

path

through

plate

feedback

the

of

through

current

during

Tube

the

time

triggered

voltage

the

Miller

This

Runup

rises

increase,

Tube

Tube

change

of

150

negative

linear

voltage

provides

(Cl

60),

in

as

Resistor

SW160.

both

current

a

wide

the

crt,

Control

cathode

at

the

the

grid

cathode

rise.

V135A

conducting

V145A

plates

and

for

the

the

voltage

conditions

sweep

direction.

through

the

will

retrace

the

Circuit

during

through

Timing

the

Runup

raises

C.F.

it

from

of

volts.

runup

which

to

be

voltage

the

sweep

The

the

sweep,

is

R176.

of

the

voltage

of

When

will

will

of

Timing

resistance

of

which

for

sweep

return

crt

prevents

at

the

This

cuts

Capacitor

Miller

Tube

the

As

the

causes

which

in

going

has

a

gain

only

Due

change

of

across

a

nearly

in

generated.

at

the

time

R160

are

Timing

Timing

the

size

charging

range

of

the

rate

at

that

determined

As

VI

61

arm

of

the

at

and

cathode

V145B

the

comes

rapidly

and

then

the

Disconnect

the

lower-half

Capacitor

in

the

essentially

portion

which

it

charges

this

period

portion,

rapidly

portion

beam

returns

the

retrace

plates

off

the

the

Timing

Runup

starts

voltage

voltage

the

voltage

turn

negative.

of

.75

volt

to

the

in

voltage

the

Timing

constant

turn

causes

cathode

base.

selected

Resistor

Capacitor.

of

the

the

sweep

which

is,

the

by

the

sweep

B,

there

SWP

the

grid

rises

voltage

out

of

revert

V145A

rise,

carrying with

the

Miller

of

the

C

1

60

(the

will

and

to

its

of

the

the

Time-Base

interval.

of

the

diodes.

Resistor

(C160).

Tube

negative.

negative

at

the

at

the

at

prevents

about

produces

feedback,

grid
at

the

Resistor

current

a

of

Timing

by

means

determines

By

capacitor

capacitor

rates.

the

distance

the

setting

voltage

will

LENGTH

and

of

V145B.

the

voltage

at

this

cutoff,

to

cutoff.

Diodes

(V152B)

through

cathode

Tube

now

the

same

waveform,

discharges

Timing

therefore

the

quiescent

sweep

rapidly

to

Disconnect

This

the

grid

cathode

the

the

grid

200,

so

a

voltage

cathode

into

linear

the

Capacitor

means

can

Thus,

spot

the

be

a

Control.

cathode

As

point

the

Sweep-

its

original

The

voltage

VI

52.

provides

R147

circuit

falls

as

except

is

Resistor).

be

plate

voltage.

sawtooth,

its

Generator

In

addition,

(R160)

tends

plate

and

upper

that

plate

as

ex

will

(R160)

the

saw

Runup

of

the
the

being

the

moves

spot

of

the

rises

linear

the

at

the

rises

it

the

The

and

line

when

much

much

of

the

start

the

Hold-Off

to

regain

a

As

of

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sweep.

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Hold-Off

result

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the

same

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cathode-follower

and

starts

action

interval

Resistor.

however,

period

holds

triggered.

that

over

established

hold-off

i.e.,

by

the

TIME/CM

Hold-Off

Circuit.

The

grid

of

voltage

the

circuit

sweep

from

V135A

be

desired,

full

right;

the

grid

R116.

mediately

point

When

above,

Also

the

upon

When

position,

the

anode

To

consider

MODE

return

In

the

This

places

and

the

Q

1

24

negative

collector

reversed

reverse

Q124

the

sweep.

The

a

level

This

voltage

trigger

sweep.

allows

a

state

the

Capacitor

the

rise

time

conducting.

that

initiates

C

1

80

The

time-constant

so

that

of

time

the

grid of

However,

the

cathode-follower

the

grid of

by

time

the

size

Circuit

STABILITY

V135A.

at

the

from

can

only

the

Time-Base

below

cutoff.

the

this

circuit

This

permits

upon

the

next

the

MODE

the

emitter

anode

the

sweep

the

MODE

the

emitter

of

D126

the

switch

to

is

from

grid

which

pulse

SINGLE

RESET

the

emitter

reverse

and

voltage

biased

biasing

affecting

voltage

will

to

a

of equilibrium

trace

portion

C

in

voltage

the

grid

V145B,

As

the

starts

during

after

the

V135A

when

V135A

the

STABILITY

required

grid

of

the

switch

simultaneously

ADJUST

This

control

of

V135A

free-running.

be

produced

Trigger

However,

TRIGGERING

closes

the

of

V135A

the

removal

sweep

is

switch

of

Q124

of

D

1

26

generator

switch

of

is

connected

action

is

in

the

SWEEP.

position,

same

potential

of

Q124,

biased,

the

READY

reaches

as

its

of

D124

the

of

will

be

determined

be

at

a

switch

finite

time

of

1

80

charges

at

of

V135A

until

mentioned

retrace.

discharging

of

the

retrace

completion

high

enough

C

1

80

V145B

and

the

ADJUST

is

determined

Timing

changes

R111

should

is

Adjusted

when

circuit,

LEVEL

RECURRENT

to

the

grid

of

of

the

initiated.

is

in

is

is

grounded,

circuit.

is

thrown

Q

1

24

is

of

the

RESET

position

SW126

on

which

the

voltage

light

about

anode

prevents

grid

voltage

V135A

will

value

which

the

Multivibrator

for

after

the

the

cathode

is

being

V135A

At

the

through

this

circuit

interval,

discharges

is

cutoff,

grid

Capacitor.

the

with

regulates

be

just

high

a

can

should

—

150

V135A

hold-off

the

open,

to

connected

to

a

circuit,

grounds

both

reverse

at

B124

—

60

voltage

the

rest

by

will

the

Time-Base

the

completion

sweep

sawtooth

through

V183A

of

pulled

comes

previously,

start

of

the

is

long

and

of

the

retrace,

so

that

to

it

returns

111,

The

by

the

For

that

of

the

d

adjusted

enough

in

this

drive

free-running

can

switch

volt

supply

to

fall

voltage,

it

the

SINGLE

to

positive

assume

and

then

the

plate

the

cathode

biases

the

collector

will

light

volts.

goes

negative.

collector

of

V135A

during

,

R185

allow

and

c

and

D124

R

time-constant

negative

a

control

NORMAL

making

preventing

small

R111

circuits

as

V183A.

up,

through

out

of

cutoff

this

is

the

retrace

Hold-Off

enough,

for

a

it

cannot

the

loses

control

to

the

amount

sweep

this

reason

of

the

Timing

level

at

so

that

to

prevent

manner,

trigger

pulse,

the

grid

sweep

be

turned

connects

through

to

cutoff

at

which

position,

inoperative.

any

SWEEP

ground

voltage.

that

allowed

of

V135A.

of

Q124.

when

is

voltage

until

this

time

and

an

incoming

produce

the

the

short

C

18

be

point

level

rate,

the

the
the

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effect

and

the

D126

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also

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after

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a

3-8

Circuit

Description

—

Type

502A

Fig.

3-4.

Simplified

Horizontal

Amplifier.

3-9

Circuit

Description

TKfeCI

THERMAL

CUTOUT

T602

—

Type

29

502A

V652

V746A

V6

66

+100V

A

4-

350V

R662

+100V

4-485V

UNREG.

(TO

CRT

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+350V

+350V

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LOWER

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V666B

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AMP.)

CRT.)

BEAM

BEAM

BEAM

D642A

D642B

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ADJ.

R6Z2

R62

3

C623

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100

V

V637

-

1

5

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BEAM

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1

5

0

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-

150V

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LOWER

VERT.

AMP.)

+

100V

41OOV

R649

3-10

Fig.

-

150

V

3-5.

Simplified

Low-Voltage

Power

Supply.

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V444

V

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WRG.

TO

V4

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4

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TRS.

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The

negative

cause

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explained

As

the

V135A

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conduction,

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1

26.

will

drop

negative,

voltage

on

and

the

Q

1

24

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control

the

level

will

triggers

from

circuit

will

either

thrown

NORMAL

The

positive

V135B

is

whose

start

portion

of

permits

the

The

Time-Base

BEAM

Vertical

deflection

SELECTOR

of

the

Multivibrator,

application

and

in

the

switch

is

ment

the

front-panel

Time-Base

The

Horizontal

Follower,

plate-loaded

flection

plates

The

HORIZONTAL

whether
Generator

the

With

the

divider

supplies

the

beam.

Horizontal

to

works

illustrated

from

circuit

other

circuit

in

either

drive

The

waveform

this

Input

R311-R312.

Input

The

the

Horizontal

much

the

of

hand,

on

going

to

go

The

still

applies.

sweep

and

turns

its

plate

The

current

the

voltage

in

relation

the

collector

READY

light

positive,

voltage

be

held

switching

remain

to

position.

rectangular

coupled

to

and

the

trace

Amplifier

plates.

switch

just

described.

same

set

to

any

horizontal

EXTERNAL

circuits.

HORIZONTAL

a

cathode-coupled

Output

in

the

input

or

from

the

NORMAL

is

configuration

C.F.

a

manually

C.F.

V

1

Input

Amplifier

switch

the

in Fig.

plate

circuit

the

Input

has

a

one

side

trigger

into

action

of

ends,

the

V145A

will

flow

at

to

ground,

will

will

D24

level

on

positive

the

in

this

the

RESET

the

duration

sweep

to

be

Generator

One

section

SW489

and

manner,

of

the

sweep

connector

Amplifier

Amplifier

the

crt.

DISPLAY

waveform

an

external

or

received

the

via

the

The

Horizontal

adjustable

83B

for

C.F.

isolates

and

capacitances

Amplifier

same

as

3-4.

A

of

the

Amplifier.

positive

and

the

pulse

when

cutoff

and

the

waveform

off.

go

slightly

through

the

now

go

out.

becomes

the

Sweep

condition

position

pulse

grid

circuits

are

sawtooth,

observed.

is

is

connected

is

located

immobilizes

The

when

EXT

voltage

consists

Input-Amplifier

to

is

the

SWEEP

from

sweep

frequency-compensated

horizontal

provides

is

controlled

the

negative

Output

The

feedback

grid

V145A

Sweep

Generator

through

When

negative

D

1

base

of

to

turn

the

go

positive

As

the

forward

grid

of

V135A.

enough

Gating

until

again

appearing

of

coincident

unblanks

inoperative

to

of

the

in

same

circuit

the

HORIZONTAL

ranges.

is

obtained

rather

AMPLIFIER

of

drive

switch

received

source.

MAGNIFIED

the

Time-Base

sawtooth

POSITION

d

c

voltage

positioning

the

Miller

a

low-impedance

and

the

Vertical

feedback

Amplifier

Output

loop

circuit

When

V135A

26,

Q

transistor

collector

to

Multivibrator.

the

at

the

HORIZ

the

this

With

an

the

SW331

from

Input

by

Amplifiers.

Amplifier,

between

on

it

to

V145B

and

R126

1

24

towards

biased

This

prevent

MODE

or

the

crt.

with

the

when

the

cathode

circuit

is

immobilized,

this

than

Input

stage,

horizontal

the

this

is

control

to

circuit

Amplifier.

feedback

loop

to

the

the

arrives

come

circuit

comes

forward

and

far

enough

on.

ground

voltage

and

voltage

further

switch

put

in

cathode

This

pulse,

the

crt

the

UPPER

horizontal

DEF

PLATE

circuit

for

DISPLAY

arrange

through

from

Cathode-

and

determines

Time-Base

switch

position,

Generator.

coupled

voltage

the

grid

of

the

from

source

This

extends

cathode

on

the

plate

other.

will

into

turns

into

R127

The

will

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the

trace

and

the

the

de

R398

crt

the

net

the

Circuit

Description

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The

amplifier,

obtained

output

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between

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NORMAL

R331

posed

R336, R337,

positions,

cathode

a

back

gain

that

the

switch

MAGNIFIED

fier

be

the

trol

to

most

in

network,

stage

Control

tion.

DISPLAY

EXT

directly

grid

configuration

disconnected

the

for

adjusted

switch,

the

Output

Oscilloscope

T602. The

may

series

has

ing

main

to

depending

three

voltages

supply

for

essary

Input

sawtooth

determined

is

of

lower

applied

of

The

function

the

center

is

so

that

affected

crt,

as

R357

compensate

effective

the

NORMAL

The

Output

can

This

When

VOLTS/CM

circuit

cathodes

this

In

the

the

input

Amplifier.

Plate

be

for

two

or

aiding

primary

run

on

main

of

also

the

high-voltage

to

of

not

circuit

value.

the

waveform

is

R368

switch

the

from

change

to

and

connected

more

Amplifier

and

converts

from

the

voltage.

by

the

two

negative

position

in

the

R334

in

and

one

of

and

This

to

the

stage.

of

of

the

changed

positions.

the

horizontal

when

the

value

adjusts

the

for

when

Amplifier,

an

extremely

be

varied

which

control

is

HORIZONTAL

positions,

the

of

the

of

the

from

of

the

an

equalize

external

Horizontal

circuit

and

filament

is

furnished

primary

234

volt

windings

windings.

windings

line

voltages

upon

how

full-wave

—

150,

has

an

regulate

the

Time-Base

the

cathodes,

feedback

of

the

circuit

parallel

R338.

In

the

R331

shunts

decreases

stage

the

MAG

will

be

crt

when

from

This

the

beam

of

R331

plate-to-plate

any

circuit

the

position.

over

varies

is

most

in

the

front-panel

Input

Amplifier.

amplifier

the

circuit,

Input

EXT

the

positions

POSITION

connected

POWER

power

has

two

in

parallel

operation.

which

These

may

of

all

power

4-100

unregulated

power

this

supply

is

a

cathode-coupled

positive-going

Generator,

The

gain

amount

of

which

applied

HORIZONTAL

and

the

cathode

with

the

any

of

the

resistors

the

total

the

amount

and

consequently

REGIS

Control

expanded

the

HORIZONTAL

NORMAL

positioning

HORIZONTAL

by

high-gain

a

the

effective

X20

the

Amplifier

HORIZ

cathode

of

by

be

110,

the

and

to

control

is

positioned

is

changed.

gain

nonsymmetry.

virtue

limited

amount

SWEEP

DISPLAY

horizontal

EXTERNAL

slightly.

which

DC

voltages.

the

control

between

SUPPLY

for

a

single

equal

for

117

The

may

be

windings

used

117, 124,

windings

supplies

4-350

output

supply

as

dc-balances

of

stage.

range

when

This

changes

slightly.

HORIZONTAL

the

tapped

for

the

of

in

switch

primary

to

—

sawtooth

to

the

Input

resistance

turn

determines

to

the

DISPLAY

resistance

series

combination

SWEEP

is

switched into

cathode

of

negative

R337

symmetrically

any

of

of

the

beam

in

The

of

the

This

DISPLAY

its

positive

The

with

of

cathode

the

HORIZONTAL

MAGNIFIED

is

signal

connector

action

The

the

To

BAL

control

is

disconnected

the

tubes

power

windings;

volt

operation,

used

as

along

allow

the

220,

are

connected.

furnish

volts.

The

of

about

the

crt.

high-voltage

Type

502A

paraphase

voltage,

a

push-pull

Amplifier

connected

stage.

switch,

is

MAGNIFIED

resistance

increases

is

to

DISPLAY

the

SWEEP

the

ampli

will

the

center

X

1

CAL

stage

slightly

control

switch

feedback

gain

of

the

X20

degenera

position.

in

any

of

is

coupled

to

changes

Input

C.F.

d

c

level

compensate

R341

DISPLAY

plates

of

in

the

transformer

of

T602

voltage

with

the

instrument

234

and

regulated

4-350

4-485

It

is

unnec

power

the

In

the

com

the

feed

the

insure

about

not

Con

the

CAL

the

the
the

from

the

502A

these

or

also

buck

two

248,

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3-11

Circuit

Description

—

Type

502A

3-12

NORMALLY

LOCATED

REAR

PANEL.

ON

CLOSED

Fig.

3-6.

Simplified

CRT

Circuit.

supplies

the

three

supply

Reference

a

a

difference

of

Should

proportion,

grids

the

of

compensate

the

thus

150

thus

The

supply.

essentially

output

V666B.

be

improves

the

A

small

screen

opposite

V677.

tube,

This

The

+100

mentioned

unregulated

The

the

furnishes

in

Vertical

gas

has

the

consisting

determines

at

voltage,

series

V637

the

at

impedance

volts.

in

—

voltage

at

will

output

in

+350

is

—

vacuum-tube

a

reference

that

heaters

Beam

by

which

potential

of

half

divider

Control

pears

voltage

adjusted

output

in

two

amplified

of

grid

change

voltage

to

by

and

—

and

change

volt

of

actual

required

the

of

appear

V677

will

C671

in

the

appears

produce

be

of

the

bus.

supply

the

V722

regulator,

As

an

high-voltage

as

lishes

assume

have

main

the

voltage

diode

a

of

about

difference

the

across

the

output

the

of

by

V636B,

tube

will

voltage

the

pulls

C623

increases

the

150

volt

The

by

the

voltage

This

the

follow

returned

sample

of

at

the

a

ripple

in

This

and

same

the

volt

volt

added

to

supply.

6.2

volt

the

their

own

power

a

regulated

Input

Amplifier

Amplifiers.

for

voltage-reference

constant

grid

loading

and

the

for

zero

at

grid

the

voltage.

V666B

polarity

tends

hence

presence

supply.

supply

previously,

—

70

amplifier.

of

R621,

the

of

the

divider.

is

the

voltage

on

difference

whose

V637.

change

at

plate

of

the

of

the

output

improves

the

output

supply

divider

at

this

stage.

an

error

of

the

to

response

of

the

through

screen,

component

to

circuit

supply

to

the

voltage

output

supply

supplies.

voltage

output

amplifier,

V636A

the

change

the

the

grid

error

voltage

the

grid

its

reduces

Rectified

regulation

supplies,

tubes

the

—

voltage

volts

at

The

R622

percentage

and

When

exactly

on

the

at

the

error

voltoge

amplifier.

plate

The

error

the

drop

plate

V637,

in

rectifier

voltage

the

response

voltage.

serves

R671-R673

grid of

will

If

the

loading

voltage

series

and

established

of

the

unregulated

R662.

which

acts

at

to

the

ripple

cancel

the

the

also

improves

of

line

functions

voltage

for

the

+350

of

about

works

in

The

at

the

tends

to

circuits.

a

transistorized

—

6.2

in

150

volt

tube

drop,

the

grid of

grid

potential

V636A,

and

of

thus

this

—

150

supply

grid

is

dc-coupled

voltage

across

of

the

which

output

V602

back

gain

of

as

a

reference

the

be

equal

will

will

be

tube

hence

circuit

The

as

the

grid

appearing

ripple

ripple

voltage

in

voltage

supplying

the

volt

+485

essentially

divider

base

go

volt

output

the

Upper

supply

V639.

establishes

V636B,

is

obtained

R623.

R622,

total

voltage

determines

control

volts.

tend

of

V636A

will

exist

The

appearing

the

tube

tube.

will

be

voltage,

back

to

of

the

the

circuit

establishes

amplifier

to

the

should

tend

appear

amplified

V677.

The

the

value

of

to

sudden

bus

ripple

ripple

an

injector

of

V677

at

the

on

the

regulation

variations.

the

same

from

the

+350

supply

volts

the

R648-R649

of

Q644.

more

In

addition

and

is

This

for

the

is

to

change

will

between

error

to

and

The

change

in

a

is

to

the

its

established

feedback

to

for

a

V666B.

bias

to

at

cathode

output

+100

appears

signal

which

at

cathode

the

+100

manner

the

cathode

+100

volt

also

for

same

If

negative,

full-wave

for

the

Lower

furnished

tube,

a

fixed

one-half

the

other

from

—

150

that

ap

the

total

properly

the

change

the

signal

the

grid

at

the

hence

direction

coupled

output

loop

sudden

the

+100

voltage

The

voltage

change

the

grid

and

will

voltage

volts.

changes

which

grid,

will
will

the

plate

volt

of

the

volt

regulator.

furnishes

the

manner

estab

we

now

the

Circuit

Description

emitter

of

Q644

will

also

go

to

strapped

will

Q634.

it

is

the

increase

coupled

output



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value.

for

the

V800

input

each

dc-coupled

of

actual

control.)

the

ment,

the

the

voltage

voltage,

is

connected

voltage

V814B

thus

balance

Varying

approximately

allows

of

brought

fier

Unblanking

complished

for

to

is

The

transmitted

supply.

to

crt

a

is

in

of

at

of

as

of

crt

directly

then

go

The

the

base

essentially

base.

in

through

and

A

single

the

three

crt.

The

and

a

The

three

filters.

of

the

V822

and

the

crt.

voltage

In

order

crt,

and

it

is

crt

remain

three

supplies

to

obtained

applied

to

is

varies

controls

The

HORIZ

of

this

for

The

approximately

HORIZ

into

will

start

As

mentioned

the

grids

the

LV

power

not

tied

unblanking

The

stray

move

the

in

the

more

collector

of

Q647

an

emitter-follower,

Hence,

the

the

voltage

the

will

thus

40-Kc

Hartley

power

main

portion

half-wave

Separate

cathode

unblanking

V832

supply

V862

supplies

depends

to

maintain

thereby

necessary

constant.

the

regulated

the

grid

to

the

amplified

the

screen

its

output.

SENS

the

sensitivity

control

100

a

corresponding

+

BEAM

register;

at

the

previously,

by

employing

and

cathodes.

supply.

to

any other

pulses

to

the

capacitance

floating

required

to

the

negative,

of

Q634

.

The

emitter

rectifiers,

pull

the

CRT

supplies

components

of

the primary

rectifier

supplies

circuits

to

about

on

a

maintain

that

This

by

comparing

from

the

of

V814A;

—

150

by

V814A

voltage

BAL

Control

can

change

volts

or

—

REGIS

i.e.,

same

The

from

grids

in

supply

time.

To

more

output.

The

carrying

will

then

series-regulator

so

of

Q647

at

the

emitter

D642A

output

CIRCUIT

oscillator

that

of

the

circuits

are

required

of

the

the

crt

grids.

—

2900

about

—

the

setting

constant

—

volt

of

with

3%.

the

place

supply

of

the

the

accelerating

is

accomplished

150

arm

the

regulated

and

of

R833

the

the

respect

change

will

sweep

on

dc-coupled

separate

The

grid

supply,

the

the

the

fast

overcome

calibration

a

volt

of

crt

in

allow

cathode

and

Time-Base

crt

circuit

enough

back

circuit

T801

crt

3100

deflection

sample

the

two

for

the

—

negative

collector

with

it

go

up,

transistor

the

emitter

also

of

and

B,

up

to

furnishes

provide

Oscillator

tuned

employ

for

in

order

volts

for

for

of

the

of

supply.

the

HV

cathode

of

supply.

V814B;

Oscillator

allows

a

horizontal

cathode

to

each

horizontal

the

each

crt

screen.

unblanking

high-voltage

supplies

on

the

is

therefore

Generator

via

the

makes

to

this,

Type

since

of

the

carrying

will

goes

Q647

back

its

voltages

circuit

by

capacitor

the

to

the

the

grids

INTENSITY

sensitivity

of

the

potentials

by

regulating

the

This

Control

this

The

the

output

tube

more

potentials

other.

sensitivities

beams

vertical

other

floating

it

unblank

an

502A

it

Q644

base

with

Q647

follow

up.

This

will

to

specified

energy

C807.

grid

and

provide

cathodes

(the

instru

cathode

sample

R826,

tube

error

and

perfect

beams.

This

to

ampli

is

supplies

are

tied

hand,

floating.

are

grid

difficult

the

isolation

be

the

for

are

by

be

ac

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of

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3-13

Circuit

Description

—

Type

5O2A

3-14

Fig.

3-7.

Simplified

Calibrator

Circuit.

network

grid

circuit,

is

employed.

the

unblanking

crt

via

(C866,

unblanking

supply

itself

ing

pulses,

capacitance

holds

the

of

the

unblanking

Each

gun

MATISM

metry

controls

BALANCE

the

effect

other

of

on

composed

and

By

pulse

C867)

pulses

is

not

at

the

of

grids

at

of

Controls.

the

display,

the

brilliance

Control

so

that

both

beams.

of

R864,

this

arrangement,

is

and

(at

appreciably

slower

the

circuit

the

pulse.

the

crt

A

single

R860

the

INTENSITY

R864,

C868,

C866,

coupled

(C868, C869).

the

faster

sweep-rates,

is

unblanked

has

control

and

of

both

balances

C867

directly

moved.

charged

its

a

single

Control

C869

and

the

sweep

potential

own

R841

beams.

one

and

R866

fast

leading

to

the

For

rates)

For

longer unblank

however,

through

for

FOCUS

adjusts

INTENSITY

An

grid

voltage

will

R868

for

for

the

edge

grids

of

short-duration

the

power

the

R864.

the

duration

and

ASTIG

the

Control

INTENSITY

against

have

an

one

other,

stray

This

geo

equal

the

Circuit

Description

of



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The

erator

front-panel

Multivibrator

cathode-follower

cutoff

During

form

the

cathode

tion

of

volts.

grid

voltage

is

exactly

knob

is

The

cathode

switch

volt

to

AMPLITUDE

AMPLITUDE

whose

approximately

connector

V873A-V875

and

conduction.

the

negative

grid

of

rests

at

the

waveform

By

means

can

+50

turned

Cal

Out

resistor.

six

calibrated

50

volts,

V873B

ground

volts

to

CF

By

are

V873B

of

be

the

CALIBRATOR

CALIBRATOR

1-Kc

labeled

connected

between

portion

is

driven

potential.

the

grid

rises

the

CAL

adjusted

has

means

available.

when

the

OFF

position.

a

precision

of

peak-to-peak

the

is

output

CAL

of

the

well

During

to

AMPL

so

that

AMPLITUDE

AMPLITUDE

voltages,

OUT.

so

two

a

square-wave

is

as

operating

multivibrator

below

the

slightly

(R879)

the

voltage

—

Type

available

It

consists

to

switch

cutoff

positive

less

than

Control,

cathode

CALIBRATOR

divider

CALIBRATOR

from

502A

states,

wave

and

voltage

for

.5

of

milli

gen

at

por

+50

the

the

the

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a

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3-15

NOTES

SECTION

MAINTENANCE

4

Air

Filter

Care

must

Type

502A

ated

at

temperatures

To

assure

so

that

the

kept

clean.

must

be

in

the

covers

A

washable

instrument.

should

be

to

four

months.

the

operating

The

following

1.

Flush

2.

Prepare

solution.

that

sentative

most

3.

4.

Coater.

the

Rinse

Dip

air

These

Wash

adhesive

or

of

conditioner

PREVENTIVE

be

taken

inasmuch

dissipation

free

air

Moreover,

place

except

Under

inspected

loose

the

will

passage

intake

for

filter

More

conditions

cleaning

dirt

a

hot

the

and

filter

spray

products

the

Research

result

during

is

normal

and

out

filter

and

filter

suppliers.

MAINTENANCE

to

assure

as

some

of

levels

such

without

of

air

the

is

not

blocked

the

side

proper

used

frequent

water

dirt

are

air

maintenance.

at

operating

cleaned

inspection

are

more

procedure

of

filter

and

as

you

is

loosened

let

it

dry.

with

fresh

available

Products

free

the

components

that

adequate

instrument

and

panels

circulation.

the

air

conditions

if

necessary

severe.

is

suggested:

with

a

stream

mild

would

and

Filter

from

Corporation

ventilation

excessive

air

must

the

and

Do

intake

is

required

soap

wash

floated

Coat

the

are

circulation.

be

filter

bottom

not

part

the

every

of

hot

or

detergent

a

sponge

or

local

and

of

oper

interior

placed

must

cover

remove

of

when

water.

off.

Handi

repre

the

the

filter

three

from

be

Soldering

Many

are



so



these

excessive

the

will

If

number

frequent

hand

type

should

you

in

one

and

of

the

mounted

silver-to-ceramic

not

you

prefer,

strips

a

of

pound

heat,

break

are

of

parts

stock

solder

be

on

are

Tektronix

is

readily

you

rolls.

lined

or

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responsible

changes,

of

can

Ceramic

components

ceramic

with

use

of

ordinary

bond.

bond

if

instruments,

we

solder

containing

used

frequently

available

order

Order

by

Strips

in

terminal

a

silver

Occasional

excessive

for

the

recommend

from

the

solder

Tektronix

your

Tektronix

strips.

alloy.

tin-lead

use

heat

maintenance

or

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about

in

printed

radio-supply

directly

part

The

Repeated

solder

of

is

you

that

3%

number

instruments

notches

will

tin-lead

not

applied.

of

contemplate

you

silver.

circuitry

houses.

from

Tektronix

use

break

solder

a

large

keep

This

and

251-514.

on

in

of

If

Fan

Motor

The

require

Visual

You

few

months

include

binding

resistors,

For

most

particular

ponents

result

of

essential

before

further

fan

motor

lubrication

Inspection

should

for

such

things

posts,

missing

visual

care

are

detected.

other,

that

replacing

damage.

bearings

for

the

visually

improperly

inspect

possible

as

loose

tube

troubles

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TROUBLESHOOTING

This

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shoot

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and

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Instructions

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PROCEDURE

information

attempting

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Instructions

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troubleshooting

defective

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5.

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6.

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The

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TROUBLESHOOTING

502A

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deflection

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TROUBLESHOOTING

Proper

Oscilloscope

Power

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specified

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graticule

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R753;

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R649)

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amplifiers

TROUBLESHOOTING

For

troubles

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crt

display

voltage

troubles

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R648

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Maintenance

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Type

502A

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4-9.

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resistances

be

to

the

point

in

insufficient

If

the

will

screen.

calibrated

in

possible

and

the

instructions

If

the

pronounced,

the

amplifier.

checked

checked.

until

Sweep

will

opens,

the

the

when

the

the

circuit

of

course

sweep

other

Time-Base

the

Single

If

this

condition

checked.

when

the

when

sweep

the

+4

opened

to

lockout,

normally.

is

shorted

to

The

TRIGGERING

upon

spot

or

beams

are

externally

is

removed,

The

is

for

troubleshooting

Corresponding

Amplifier

a

point

face

of

is

the

one

the

cathode

gain

of

not

extend

In

addition,

on

any

sweep

timing

to

correct

the

X

decrease

which

in

in

or

The

as

one

the

not

Time-Base

MODE

instrument

will

means

across

hand

Generator

sweep

It

should

Time-Base

the

plate

volts.

will

even

free-run

the

free-running

AMPLIFIER

trace

visible

shorted

the

procedure

somewhat

circuit

is

reached

the

crt.

which

and

or

no

the

Horizontal

to

the

range

and

this

1

CAL

contained

gain

if

there

will

affect

input

of

the

cathodes

perform

Generator

switch

is

is

not

lockout

that

the

D126

becomes

will

circuit

exists

the

normally

Time-Base

voltage

also

though

or

leaky

since

the

LEVEL

THE

when

together,

horizontal

for

the

the

points

on

should

The

stage

is

plate

horizontal

the

left

sweep

of

the

sweep

trouble

and

X20

in

the

of

the

is

the

cathode

first

of

the

properly

will

in

the

NORMAL

set

up

for

at

each

incoming

crt.

shorted

not

produce

seems

plate

voltage

be

Generator

cause

the

troubleshooting

same

be

where

defective.

circuits.

Amplifier

no

gain

steps.

Generator

of

V135A

the

the

READY

it

will

cause

grid

of

Control

Time-Base

HORIZONTAL

horizontal

but

amplifier

as

Vertical

opposite

progressively

the

immediately

Check

deflection

and

right

timing

TIME/CM

length

by

adjusting

CAL

Controls

Calibration

Horizontal

sweep

at

but

follower,

Also,

amplifier

still

operate

position.

Single

the

end

trigger

or

a

to be

V135A

disappear

is

not

resetting

of

approximately

is

producing

is

not

will

normally

Single

light

the

is

will

have

Generator.

deflection

is

in

a

the

that

explained

Amplifiers

sides

shorted

beams

do

following

for

decreases,

sides

will

no

switch.

slight,

the

according

Procedure.

Amplifier

all,

check

the

balance

V

1

83B,

the

common

stages

Sweep

of

the

will

leaky,

sweep

V135A

pro

Sweep

seems

Time-

pulled

little

when

state

Hori

for

of

the

not

open

the

of

the

longer

If

the

it

may

high

for

should

should

a





is

4-8

SECTION

CALIBRATION

PROCEDURE

5

General

The

but

and

tion

tenance.

Apparent

actually

circuits.

used

troubleshooting

in

instrument.

required

adjustments.

given.

they

instructions

equipment,

are

are

remain

tions

signal

steps

make

mentioned

adjustments

adjustments

amplifier

should

supply

entire

are

the

instrument

occasional

other

is

desirable

the

Consequently

in

conjunction

In

the

instructions

the

proper

to

In

each

Controls

were

disconnected

given

connected

are

is

applied

It

will

be

immediately

to

determine

be

or

instrument

If

you

find

not

aware

difficulty,

Information

components

calibration

given

in

in

adjustments

calibrated.

the

Equipment

The

following

a

complete

1.

with

volts

accurate;
curacy,

DC

voltmeter

corrected

and

particularly

few

within

should

adjustments

from

troubles

result

work.

sequence

Each

numbered

make

are

in

during

are

given

except

at

to

the

to

to

to

necessary

that

in

the

these

high

must

that

of

it

is

usually

Required

equipment

calibration

(sensitivity

readings

3%

portable

not

are

the

occurring

of

improper

this

with

that

for

one

adjustment

step

assumed

the

to

for

input

the

end

contrary.

the

disconnect

the

same

for

preceding

the

proper

step.

horizontal

circuits

are

In

voltage

be

a

circuit

which

of

within

for

test

after

require

will

changed.

standpoint

in

section

the

Maintenance

follow,

a

complete

step

only

to

previous

change

signal

of

each

Input

instrument

them

input

you

the

settings

Due

to

and

usually

required,

addition,

power

calibrated.

is

out

particular

best

to

or

its

the

Type

of

at

2900

volts.

meters

a

period

frequent

be

necessary

Also,

of

the

instrument

calibration

of

the

the

contains

or

the

required

be

set

step

their

sources,

step

signal

until

or

connector.

to

refer

adjustment

the

vertical

cannot

the

if

either

supply

of

calibration,

adjustment

calibrate

equivalent

502A

least

1%

for

Be

have

of

use.

recalibration,

a

periodic

preventive

of

one

manual

section

steps

are

calibration

the

a

series

information

at

the

unless

settings.

and

unless

voltages

specific

until

another

to

the

you

for

the

interaction

amplifiers,

be

made.

entire

the

is

adjusted,

the

entire

is

necessary

Oscilloscope.

5000

ohms

100,

150

sure

your

the

required

when

tubes

calibra

main

are

often

or

more

should

during

arranged

of

information

of

related

positions

specific

All

all

jumpers

instructions

should

instruc

input

calibration

wish

controls

between

single

When

amplifier

—

150

but

will

correct

circuit.

per

and

meter

the

test

not

volt

the

you

volt)

350

ac

for

be




Fig.

5-1.

Tools

required

for

calibrating

is

2.



to

is



Accurate

or

0-300

3.

Variable

500

watts.

4.

Time-mark

neither

to

substitute

microsecond,

100

microsecond,

5.

Square-wave

105

necessary

following

1

kilocycle,

20

nanoseconds,

approximately

6.

Oscilloscope,

or

317

substitute

(1)

calibrated

volts

7.

50-ohm,

8.

Tektronix

9.

Tektronix

10.

Tektronix
Tektronix

11.

Tektronix

12.

Coaxial

rms-reading

volts

for

autotransformer,

generator,

of

these

a

5

microsecond,

Square-Wave

to

substitute

specifications:

and

40

Oscilloscope

an

oscilloscope

vertical

per

division

42

50-ohm

Type

47 pf

part

Type

"T"

210-

instruments

time-mark

and

1

generator,

Generator

10

kilocycles,

and

(3)

millivolts

Tektronix

is

not

and

(2)

inch

Coaxial

Termination

5XT,

Input

number

10XT,

Connector.

to

millisecond

a

(1)

output

deflection

bandpass

50-ohm

Time

50-ohm

the

ac

voltmeter,

250-volt

having

Tektronix

is

generator

square-wave

output

Type

available,

with

011-030

available,

10

microsecond,

Tektronix

is

not

frequencies

(2)

amplitude

and

approximately

316

the

Cable

T-Pad.

Constant

T-Pad.

(1)

factors

of

Resistor.

(1).

Type

502A

0-150

operation).

a

rating

Type

180A

it

will

having

intervals.

Type

available,

generator

rise-time

variable

or

317.

it

will

following

from

d

c

to

(1)

(2)

Standardizer,

(1)

Oscilloscope.

volts

of

at

or

be

necessary

markers

50

microsecond,

105.

If

it

with

of

200

no

more

between

100

If

a

Type

be

necessary

specifications:

.01

10

megacycles.

(2)

(0-250

least

181.

at

a

Type

will

cycles,

volts.

to

be

the

than

316

10

If

1

to

5-1

Calibration

13.

Coaxial

14.

Jumpers,

15.

A

constant

frequencies

kilocycles,

should

μ

volts

If

cover

proper

When

amplitude

to monitor

oscilloscope

kept

By

signal

may

tivity

the

at

a

plitude

also

to

2

a

constant

the

frequencies

using

at

a

the

use

going

be

reduced

ranges,

sine-wave

high

amplitude

of

signal

400

feature

constant

Preliminary

Procedure

"Straight"

6

inch

amplitude

of

1

kilocycle,

kilocycles

have

volts.

amplitude

above

a

generator

the

output

the

output

of

from

to

while

generator

out

—

Connector.

with

a

variable

ranges,

and

the

amplitude.

a

DB

the

sine-wave

the

at

the

to

enable

of

the

Type

banana

sine-wave

50

and

generator

any

output

which

test

of

the

signal

box

proper

same

to

the

sine-wave

502A

(1)

plugs.

generator

kilocycles,

1

megacycle.

output

generator

amplitudes

does

oscilloscope

generator.

from

the

or

an

attenuator

generator

amplitude

time

test

oscilloscope

monitoring

(3)

100

amplitude

is

not

which

not

have

should

By

generator

to

for

the

signal

for

generator.

having

kilocycles,

The

generator

from

available

may

be

a

be

use

system,

the

Type

the

high

going

may

a

constant

output

200

500

has

used.

constant

used

of

may

502A

sensi

from

be

kept

am

the

the

be

the

NOMINAL

SUPPLY

to





-150V

100

V

350V

Connect

put

ILLUM

autotransformer

Allow

proceeding

bration,

ment

tain

supply

of

the

and

the

Do

not

supply

you

tion

the

the

autotransformer.

control

instrument

periodically

adjust

voltage

regulation

reset

voltages

are

of

the

power

clockwise

for

with

the

the

at

is

the

planning

instrument.

RESISTANCES

POWER

SUPPLIES

cord

and

Rotate

to

the

an

output

to

warm

calibration

check

the

autotransformer

117

or

234

being

are

to

—

checked.

CAUTION

150

control

actually

perform

APPROX.

the

ac

the

ON

of

117

up

for

adjustments.

input

volts

out

a

OF

GROUND

voltmeter

POWER

position

volts

several

voltage

as

necessary

except

unless

of

complete

RESISTANCE

3.5

k

4

k

10k

to

AND

and

adjust

(or

234

minutes

During

to

the

when

the

the

power

tolerance

calibra

the

to

TO

out

SCALE

volts).

before

cali

instru

main

power

or



the







Preset

as

follows:

POWER

INTENSITY
INTENSITY

FOCUS

TRIGGERING

TRIGGER

MODE

TIME/CM

VARIABLE

HORIZONTAL

HORIZONTAL

AMPLITUDE

HORIZ

SELECTOR

The

following

Input

SENSITIVITY

VARIABLE

DC

VERTICAL

the

BAL.

front-panel

AND

(both

SELECTOR

Switch

DEF

Selector

POSITION

SCALE

BALANCE

beams)

LEVEL

DISPLAY

POSITION

CALIBRATOR

PLATE

applies

to

controls

ILLUM

both

full

vertical

control

of

the

Type

counterclockwise

+

LOWER

CALIBRATED

2

EXT

VOLTS/CM

TIME

BASE

amplifiers:

.2

VOLTS

CALIBRATED

will

be

502A

PWR

OFF

midrange
midrange

midrange

AC

NORMAL

1 mSEC

midrange

OFF

AMP

A-DC

PER

CM

set

later.

midrange

1.

Low-Volfage

Connect

power

supply.

Fig.

5-2.

Set

Check

that

supplies

reset

voltages

If

125

tion

must

either

Vary

volts

of

are

the

the

are

the

the

regulate

(or

the

—

d

Power

the

the

within

+

100

150

within

output

between

low

within

c

voltmeter

—

150

outputs

or

control

of

voltage

Power

supply

Control

of

the

the

specified

+3

50

volt

slightly

tolerances.

the

autotransformer

210

and

power

+

or

—

Supply

to

the

output

for

—

supplies

250

supplies.

3%

6.2,

of

output

test

a

+

until

volts)

reading

+

100

or

are

to

their

of

points

—

out

all

between

check

The

correct

the

are

of

and

3%

power

power

—

150

shown

—

150

+

350

tolerances.

of

tolerance,

105

the

regula

supplies

voltages.

volt

volts.

volt

supply

and

in



Before

of

the

tances

5-2

power

of

applying

the

supplies

supplies

power

should

may

to

the

instrument

be

checked.

be

found

the

resistances

The

typical

in

the

chart

below.

resis



Fig.

5-2.

Power

Supply

voltage

test

points.

®2

Calibration

Procedure

—

Type

502A

Using

the

output

is

adjusted

voltage

amount

should

high

Supply

-6.2V

-150V

+

+350V

2.

R879,

Connect

the

reading

TUDE

ing

of

the

of

for

from

of

ripple

remain

line

voltage.

100V

CAL

the

cathode

of

of

+50

CALIBRATOR

22.5

to

test

each

117

105

about

TYPICAL

d

27.5

on

c

V873B.

volts

oscilloscope,

power

supply

volts.

Swing

volts

to

the

test

the

same

Return

the

RIPPLE

Typical

8mv

8mv

8mv

25mv

AMPL

voltmeter

See

on

the

switch

volts

on

check

the

125

volts

scope.

amplitude

line

voltage

AMPLITUDES

Ripple

at

105

+

50%

+

50%

+

50%

to

the

Fig.

d

c

voltmeter.

to

5

m

the

d

the

when

V

ripple

the

autotransformer

while

The

power

from

to

and

1

15V

at

105

and

at

105

and

at

105

junction

5-3.

Adjust

and

check

c

voltmeter.

voltage

125V

R885

the

output

ripple

line

AMPLI

a

and

for

read

autotransformer

observing

supply

low

117

volts.

125V
125V

and

of

R879,

Turn

for

the

at

to

graticule,

near

runs

4.

connected

Adjust

the

ground.

volts.

DISPLAY

spots

spot,

105

as

a

to



NORMAL



5.

traces

the

Control

the

then

the

bottom

parallel

HV

Remove

R833

center

Now

connect

Adjust

Replace

To

check

switch

onto

decrease

volts.

the

line

117

volts

INTENSITY

Increase

Turn

two

halo

have

the

around

until

traces.

tighten

of

to

the

the

right

to

the

until

a

arm

to

the

the

HV

HV

to

the

screen.

the

The

spots

voltage

and

position.

the

INTENSITY

a

halo

each

the

brightness

INTENSITY

The

the

the

clamp,

horizontal

side

H

center

arm

reading

ground.

voltmeter

HV

Control

shield.

regulation

2 EXT

Now

line

voltage

should

was

decreased.

the

HORIZONTAL

BALANCE

forming

trace

down

intensities

clamp.

Now

rotate

lines

V

shield

of

R833

of

+100

from

the

for

place

VOLTS/CM.

while

with

not

have

Control

Control

around

adjust

the

of

the

halos

to

the

normal

should

with

the

crt

of

the

and

with

(HORIZ

volts

H

V

a

reading

the

Position

observing

the

autotransformer

shown

Return

DISPLAY

to

the

them.

INTENSITY

is

level

still

be

the

red

until

the

graticule.

a

d

c

voltmeter

SENS

is

obtained

TEST

POINT

of

HORIZONTAL

the

the

any

blooming

the

line

switch

point

where

While

observing

BALANCE

the

same.

and

about

the

knob,

trace

BAL).

from

—

2900

focused
focused

voltage

to

the

the

observe

same.

to

to

Fig.

5-3.

Location

3.

CRT

Alignment

Turn

the

TRIGGERING

TAL

DISPLAY

ITY

Control

adjust

the

ASTIGMATISM

Position

graticule

clamp

Vertical

one

of

near

at

the

switch

until

base

of

for

the

the

a

the

Amplitude

to

NORMAL

trace

Positioning

sharpest

traces

vertical

of

the

LEVEL

is

under

crt

visible

trace

center

Calibrator

to

control).

a

and

and

test

RECURRENT,

turn

horizontal

(it

may

Adjust

(narrowest

of

the

push

the

point.

up

be

division

crt.

crt

HORIZON

the

INTENS

necessary

FOCUS

trace

width).

Loosen

against

6.

ASTIG

UPPER,

ASTIG

LOWER

Adjustment

Place

the

FOCUS

Controls

as

FOCUS

Return

a

line

quite

spots

A

screen,

possible.

doing

1

inputs.

HORIZONTAL

position

Controls

and

so

Controls

the

HORIZONTAL

appears

shields

easy

to

are

should

the

MILLISECONDS

Position

VOLTS/CM

BEAM

onto

the

LOWER

circular

BEAM

focus.

If

voltage

It

is

7.

Connect

to

the

Control

when

GEOM

both




to

and

of

the

the

the

and

that

are

in

also

Adjust

above

rotate

fully

adjust

both

so

NOTE

instead

not

CAUTION

damage

sharp

be

the

DISPLAY

both

clockwise.

the

ASTIG

defocused

the

UPPER

that

both

DISPLAY

of

in

place.

the

focus.

kept

as

adjustment.

time

marker

two

switch

the

a

crt

traces

in

UPPER

Position

UPPER

spots

BEAM

spots

switch

spot,

phosphor

The

INTENSITY

low

as

from

so

the

and

both

and

are

and

are

to

the

possible

a

Type

that

2

EXT

LOWER

beams

ASTIG

as

nearly

LOWER

in

sharp

NORMAL.

high-

when

180A

only

the

®I

5-3

Calibration

Fig.

5-4.

waveform

Adjustment

B

Procedure

the

bowing

—

Type

502A

of

the

GEOM

control.

In

of

the

vertical

lines

has

waveform

been

reduced

A

the

GEOM

control

is

to

a

minimum

improperly

by

the

proper

set

adjustment

causing

bowing

of

the

vertical

lines.

In

of

the

GEOM

control.

vertical

portions

of

the

crt

obtain

curvature

8.

Adjusting

and

a

stable

of

HORIZ

From

the

MILLISECONDS

and

the

both

LOWER

Adjust

markers

calibration

and

Every

the

REGIS

The

X

1

Set

the

1

Input

BEAM.

B

beams

Controls, position

the

Now

of

marks.

time

INT

may

above

CAL

UPPER

MILLISECONDS

applied

BEAM

of

POSITION

the

UPPER

time

possible.

sensitivity

the

other

graticule

9.

With

markers

HORIZONTAL

display.

the

BEAM

Type

markers

input

Selector

BEAM

HORIZ

are

adjust

the

the

the

the

BAL

also

three

and

DISPLAY

of

the

adjust

vertical

CRT

1

80A

of

to

as

two

two

time

CRT

must

have

BEAM

to

markers

the

Set

HORIZ

REGIS

apply

to

the

to

B-DC

5

VOLTS

are

BEAM

near

the

beams

beams

markers

HORIZ

be

controls

X20

Input

the

A

switch

are

TRIGGERING

the

GEOM

lines

at

SENS

100

the

A

UPPER

and

PER

the

just

touching

REGIS

being

CRT

HORIZ

is

the

are

may

NOTE

SENS

checked.

to

be

readjusted

interact

CAL

Selector

and

100

input

to

displayed

LEVEL

control

the

sides

of

BAL

MICROSECONDS

input

of

the

LOWER

BEAM.

the

SENSITIVITY

CM.

until

above

same.

being

not

The

with

Switch

With

until

the

the

SENS

matched

coincide

BAL

HORIZ

the

markers

first

one

At

is

at

each

traces

Adjustments

to

the

A-DC

MICROSECONDS

of

each

position.

beam

X20

on

Control

for

the

crt.

and

the

the

markers

and

another

BAL

this

adjusted

this

Adjust

the face

minimum

and

BEAM

UPPER

switches

Vertical

of

ninth

until

point

to

each

with

BEAM

time.

other.

position.

time

reset

the

the

the

the

the

X20

CAL

for

a

display

of

one

100

marker

per

2

cm.

Now

turn

every

the

to

Switch

to

X

1

time

and adjust

marker

1

SECONDS

MICROSECONDS

the

HORIZONTAL

X

1

CAL

cm.

for

one

DISPLAY

1

time

MILLI



of

as

in

Fig.

5-5.

in

rate.

centimeter

There

After

and

X10

be

Adjustment

will

adjusted

sweep

2

ments.

X5

should

the

calibration

The

intervals.

be

this

positions

checked.

of

the

control

interaction

interaction

of

Disconnect

X20

procedure

should

the

between

control.

The

for

the

set

been

so

the

time

removed

be

has

HORIZONTAL

X20

the

that

X

1

markers.

CAL

correct

markers

and

DISPLAY

X20

the

control

magnified

occur

adjust

X2

and

switch

is

at



5-4

Calibration

Procedure

—

Type

502A

10.

NORM

Turn

the

the

HORIZONTAL

tion

the

the

NORMAL

the

both

Check

start

graticule.

of
to
that

centerline

until

11.

through

From

the

both

beams

and

check

TIME/CM

1

mSEC

2

mSEC

5

mSEC

10

mSEC

20

mSEC

50

mSEC

100

mSEC

200

mSEC

500

mSEC

1

SEC

2

SEC

5

SEC

.1

mSEC

Disconnect

12.

Fast

Turn

the

ING

LEVEL

oscilloscope

Connect

V

1

83

and

waveform.

MAG

TRIGGERING

of

the

and

start

of

of

the

are

set

Timing

5

Type

as

indicated

for

proper

Time

Sweep

TIME/CM

to

RECURRENT.

to

DC.

a

probe

adjust

This

is

REGIS

DISPLAY

upper

Rotate

adjust

the

the

sweep

graticule.

correctly.

from

seconds

180A

apply

display.

TIME

1

MILLISECONDS

1

MILLISECONDS

5

MILLISECONDS

10

MILLISECONDS

10

MILLISECONDS

50

MILLISECONDS

100

MILLISECONDS

100

MILLISECONDS

500

MILLISECONDS

1

SECONDS

1

SECONDS

5

SECONDS

100

MICROSECONDS

Markers.

Rate

Control

from

C311

just

a

LEVEL

to

switch

trace

the

under

HORIZONTAL

NORM

again

Repeat

.1

time

below.

Adjust

MARKERS

Adjustments

to

10

Set

the

the

test

for

a

flat

preliminary

RECURRENT

in

the

X20

the

vertical

DISPLAY

MAG

REGIS

lies

under

adjustments

millisecond

markers

to

for

a

1

2

1
1

2

1
1

2

1

1

2

1

1

μ

SEC

and

base

switch

on

input

oscilloscope

adjustment

and

position.

the

9

Control

centerline

switch

vertical

and

the

A

input

stable

display

DISPLAY

marker/cm

markers/cm

marker/cm

marker/cm

markers/cm

marker/cm

marker/cm

markers/cm

marker/cm

marker/cm

markers/cm

marker/cm

marker/cm

the

TRIGGER

of

the

to

pin

3

the

holdoff

of

C31

place

Posi

test

1.

so

10

of

Adjustment

chart





of

will

interact

times.

display.

TIME/CM

10

μ

20

μ

50

μ

1

μ

2

μ

5

μ

Disconnect

13.

Rotate

VOLTS/CM

Control

the

HORIZONTAL

14.

Apply

TUDE

set

in

of

2.5

for

the

switch

The

vertical

amplifier

of

below.

The

and

Apply

time

SEC

SEC

SEC

SEC

SEC

SEC

EXT

the

so

10

10

50

1

1

5

Time

HORIZ

HORIZONTAL

positions

that

Checking

5

volts

CALIBRATOR.

the

2

EXT.

cm.

Check

proper

deflection.

to

the

NORMAL

following

amplifiers.

before

the

faster

1

μ

SEC

and

therefore

TIME

FROM

MICROSECONDS

MICROSECONDS

MICROSECONDS

MICROSECONDS

MICROSECONDS

MICROSECONDS

there

to

VOLTS/CM

will

markers

MARKERS

TYPE

Markers.

AMP

and

adjust

is

no

DISPLAY

External

the

EXTERNAL

With

the

the

other

Return

position

adjustments

Complete

proceeding

to

switch

NOTE

sweep

rates

the

5

μ

SEC

have

to

both

A

180A

DC

BAL

DISPLAY

switch

the

EXT

horizontal

is

rotated.

Gain

connector

HORIZONTAL

position

positions

the

HORIZONTAL

and

apply

the

to

is

indicated

timing

be

rechecked

inputs

and

ADJUST

CHECK

Adjust

1

marker/cm

Check

markers/cm

Check

marker/cm

Adjust

1

marker/cm

Check

markers/cm

Adjust

1

marker/cm

through

HORIZ

shift

of

and

Attenuator

from

DISPLAY

check

for

of

the

display

disconnect

to

both

calibration

the

other.

adjustments

trigger

OR

C160C

for

for

C31

1

for

C160A

AMP

the

spots

the

a

deflection

DISPLAY

the

of
of

in

several

for

2

1

for

2

for

the

DC

BAL

AMPLI

switch

switch

jumper.

the

one

the

the

EXT

as



Fig.

5-6.

waveform

Adjustment

B

is

of

obtained

A.

C311.

on

the

Waveforms

test

oscilloscope.

B.

A

and

C

result

from

improper

settings

of

C311.

Capacitor

C311

C.

should

be

adjusted

so

that

5-5

Calibration

15.

Gas

With

jumpers,

TIVITY

switch

LEVEL

to

Controls,

BAL

and

than

running

16.

apply

of

the

in

1

priate

Control

Control

Now

B-DC

To

.2V/CM

Set

the

.2

the

mSEC.

turn

2

cm

check

trace.

the

the

vertical

VOLTS

A-B

Position

horizontal

for

Procedure

and

Hum

ground

at

RECURRENT

position

the

may

be

the

Input

to

B-AC.

during

for

hum,

It

should

DIFF

AMPLITUDE

calibrator

amplifier.

PER

(DIFF)

the

centerline.

minimum

.2

mVOLTS

found

The

the

observe

output

CM

DC

trace

vertical

and

trace

—

Type

Check

both

the

using

onto

in

Section

Selector

trace

switching

the

not

be

BAL

CALIBRATOR

to

both

Place

position

position.

so

that

Adjust

deflection.

502A

PER

the

the

switch

should

from

amount

more

A

the

and

Set

inputs

and

CM.

Turn

POSITION

crt.

The

Two.

from

not

have

DC

to

of

than

about

switch

and

B

SENSITIVITY

the

Input

the

TIME/CM

it

lies

behind

the

.2

set

TRIGGERING

and

use

of

A-DC to

shifted

AC.

hum

on

3

at

input

Selector

V/CM

the

SENSI

DC

BAL

the

A-AC

more

the

free

mm.

.

5V

and

connectors

Control

switch

switch

the

appro

DIFF

BAL

DC

A-DC

position

and

the

SENSITIVITY

PER

CM



of

vertical

position.

deflection.

Set

the

.2V/CM

GAIN

switch

in

the

.2

VOLTS

for

2.5

centimeters

in

at



17.

.2MV/CM

Place

position

appropriate

BAL

Control

16

and

17

18.

.2V/CM

Apply

the

vertical

the

SENSITIVITY

and

horizontal

for

until

a

.5

amplifier.

DIFF

position

minimum

both

GAIN

volt

BAL

switch

the

centerline.

adjustments

signal

from

Set

trace

vertical

the

the

in

so

are

Input

Adjust

the

.2

mVOLTS

that

it

the

deflection.

correct.

calibrator

Selector

lies

behind

.2MV/CM

Repeat

to

input

switch

PER

CM

the

Fig.

5-8.

Setting

the

.2

V/CM

GAIN

control.

In

the

DIFF

steps

procedure,

meters

of

the

vertical

.2

V/CM

deflection.

GAIN

control

is

adjusted

for

calibration

2.5

centi



NOTE

To

trigger

the

display

properly

A

of

in

the

SELECTOR

which

to

the

+

AC

is

being

calibrated.

position

set

the

TRIGGER

for

the

beam

Fig.

to

waveform

5-6

5-7.

Adjustment

A

of

the

.2

MV/CM

DIFF.

BAL.

control.

If

the

will

be

obtained.

Waveform

B

shows

a

typical

display

.2MV/CM

obtained

DIFF.

BAL.

when

control

the

is

control

slightly

is

misadjusted,

adjusted

properly.

a

waveform

similar

19.

.2MV/CM

Apply

a

A

of

the

vertical

the

.2

mVOLTS

control

for

steps

18

and

Both

of

the

in

the

B-DC

the

other

checked

20.

for

Adjusting

Set

the

SENSITIVITY

TRIGGERING

POSITION

graticule

While

its

the

should

appropriate

TIVITY

the

range,

VARIABLE

now

Control

location

center

rotating the

.5

millivolt

PER

2.5

19

until

above

position

positions

proper

LEVEL

Control,

adjust

SENSITIVITY

show

graticule

is

of

GAIN

signal

amplifier.

CM

centimeters

both

gain

of

the

of

the

attenuation.

R429,

switch

to

position

line.

VARIABLE

R429

until

no

movement

center

rotated.

R429.

from

Place

position.

of

adjustments

adjustments

Input

SENSITIVITY

VAR

to

.2

RECURRENT.

the

SENSITIVITY

the

Control

line

Refer

the

the

SENSITIVITY

Set

the

vertical

are

should

Selector

Disconnect

DC

VOLTS

trace

trace

is

when

and

the

to

figure

calibrator

.2MV/CM

deflection.

correct.

also

switch.

switch

BAL

PER

With

to

the

no

longer

rotated.

it

is

VARIABLE

5-15

be

At

jumpers.

CM

the

appropriate

Control

sitting

or

to

switch

Repeat

checked

this

should

and

vertical

through

moves

The

on

SENSI

5-17

input

GAIN

time

the

trace

the

be

for

Calibration

in

Fig.

5-9.

Location

of

C469

23.

as



Adjusting

From

described

200kc

the

A

the

waveform

nector.

the

sine-wave.

and

sine-wave

in

the

B

inputs

to

Common

generator,

Equipment

The

waveform

of

the

horizontal

and

the

R462

R462

Mode

Required

vertical

Procedure

in

whose

will

amplifier.

amplifier

—

Type

C469

Vertical

Amplifier.

Rejection

qualifications

list,

apply

be

applied

EXTERNAL

Also

Ratio

1

to

502A

volt

apply

are

both

con

of



21.

Vertical

Turn

switch

with

is

drift

22.

of

connected

display.

play

square

amplifier

square-wave

termination

wave

wave.

the

to

enough

a

convenient

After

should

High

Reset

Input

SENSITIVITY

TIME/CM

From

the

vertical.

of

wave

Now

reset

the

with

C469

is

It

will

C480,

C478

capacitors

deflecting

the

a

Adjust

3

adjust

adjusted

be

Input

.2

VOLTS

d

c

source

not

Frequency

following

Selector

Type

105

at

each

the

cm

is

should

you

are

C470,

bottom.

Input

Selector

to

the

the

proper

necessary

and

may

affect

DC

Shift

Selector

PER

voltage

the

be

more

apply

The

cable

end.

amplitude

observed

rest

calibrating.

C480

A

for

an

C469

to

CM.

of

trace

controls.

After

input.

graticule

to

the

A-DC

Now

vertically

to

move

voltage.

observe

than

about

Compensations

10

kc

square-waves

should

Adjust

the

of

on

the

on

the

graticule

and

C478

adjusting

to

A-DC

and

Line

center

optimum

as

recheck

the

adjustment

adjustment

square

and

it

about

the

1

mm.

.2

VOLTS

have

a

oscilloscope

the

Type

screen.

The

center

for

for

connect

up

the

top

line

top

the

adjustment

of

the

the

deflect

8

drift,

5

0Ω

105

the

a

and

of

others.

cm.

50

to

bottom

square

the

of

on

SENSITIVITY

the

trace

A

V.O.M.

if

any.

B-DC

PER

CM

μ

SEC

the

B

input

termination

for

a

stable

until

a

of

line

for

best

possible

bottom

cable

the

square

adjust

C469.

the

square

of

C470,

one

of

these

The

dis

the
the

and





The

one

Input

Selector

to

.2

VOLTS

erator

to

ends

with

cable

connected

tude

of

the

is

obtained

Set

the

SENSITIVITY

TAL

DISPLAY

form

should

form

adjust

from

the

opening

of

Elimination

result

in

a

loop

must

ratio.

To

check

to

100

kc.

PER

CM

and

not

exceed

It

should

between

mon

all

Mode

cables

At

brated

before

this

the

volt

of

switch

PER

the

oscilloscope

50Ω

terminations.

to

sine-wave

on

the

Input

Selector

switch

switch

now

the

end

of

the

loop.

of

rejection

be

less

the

adjustment

Now

change

check

5cm.

be

noted

High

Rejection

to

oscilloscope.

time

the

up

to

proceeding

signal

CM.

the

crt.

to

to

be

displayed.

lead

R462

the

eye

ratio

than

to

Frequency

Ratio.

vertical

now

may

in

A-DC

The

cable

should

oscilloscope

generator

switch

1

mVOLT

.1

EXT

dress

(5meg)

to

of

the

of

10,000

2

cm

to

change

the

SENSITIVITY

see

that

that

there

Disconnect

NOTE

must

be

with

the

be

measured

and

the

SENSITIVITY

which

leads

be

terminated

With

the

properly

adjust

until

a

to

A-B

(DIFF)-DC,

PER

CM

and

VOLT/CM.

While

observing

of

the

covered

pin

5

of

loop,

a

to

1.

give

an

acceptable

the

generator

switch

the

opening

may

be

Compensations

the

which

has

done,

up

calibration

by

from

the

deflection

the

A

lissajous

V414

straight

The

opening

to

in

the

some

and

input

not

been

to

this

procedure.

setting

the

at

terminated

output

the

HORIZON

this

lead

for

minimum

line

rejection

frequency

.2

mVOLTS

loop

interaction

the

signal

point,

the

switch

gen

both

ampli

of

5cm

vertical

wave
wave

running

would

of

the

does

Com

and

cali













5-7

Calibration

24.

Setting

Turn

the

BEAM

AMP

switches

signal

from

each

vertical

The

cable

should

be

Set

the

Input

and

the

switch

Adjust

control

The

GAIN

is

After

on

BEAM

of

display

8cm

high.

UPPER

switch

the

line

Procedure

HORIZ

position

to

.2

the

amplifier.

used

terminated

Selector

the

length

the

adjusting

Input

the

LOWER

should

ADJ

long.

GAIN

VOLTS

generator

to

connect

of

the

of

sine-wave

Selector

FOR

HORIZ

DEF

and

on

switch

the

BEAM

now

—

Type

ADJ

PLATE

both

PER

to

This

the

each

UPPER

the

502A

FOR

SELECTOR

of

CM.

Connect

the

may

generator

end

of

the

BEAM

vertical

generator

vertical

to

A-DC

to

A-B

be

one

MODE

HORIZ

the

A

and

be

with

LOWER

to

line

until

line

and

(DIFF)-DC.

horizontal

(R489)

vertical

a

B

done

to

a

50

A-B

with

the

for

the

until

MODE

to

the

SENSITIVITY

50kc

sine-wave

connectors

with

the

oscilloscope

Ω

termination.

BEAM

(DIFF)-DC.

the

amplitude

line

8cm,

Input

line.

the

horizontal

UPPER

jumpers.

to

A-DC

is

turn

Selector

Now

8cm

the

set

The

vertical

line

may

be

used

to

the

m

the

c

kc
kc
kc
kc

kc
kc
kc

kc
kc
kc

has

of

in

to

determine

been

switch

lissajous

of

the

the

the

place

oscilloscope

Amplitude

of

the

input

signal.

of

Once

the

see

the

The

should

When

proper

the

coax

.2

VOLTS

100

50

20

10

5

2

1

.5

.2

.1

the

UPPER

that

the

same

as

eye

opening

be

made

placing

amplitude,

50

Ω

cable.

SENSITIVITY

Range

PER

mVOLTS

mVOLTS

mVOLTS

mVOLTS
mVOLTS

mVOLTS
mVOLTS

mVOLTS
mVOLTS
mVOLTS

proper

BEAM

Input

eye

opening

that

listed

near

terminator

CM

PER

CM

PER

CM

PER

CM

PER

CM

PER

CM

PER

CM

PER

CM

PER

CM

PER

CM

PER

CM

amplitude

Selector

of

below.

measurement

the

center

NOTE

attenuators

be

sure

from

Input

Freq.

1

400

400

200
200

200
200
200

100

100

50

determined,

to

waveform

lissajous

crt

line

them

3

cm

6

cm

6

cm

6

cm

6

cm

6

cm

6

cm

6

cm

6

cm

6

cm

6

cm

the

A-DC.

screen.

to

|

amplitude

Check

waveform

achieve

between

and

Typical

i

Opening

2.5

5 mm

|

5 mm
5
5
5

5

5
5
5 mm
5 mm

is

Eye

mm
mm
mm
mm

mm

mm

about

the

mm

turn

to

Fig.

5-10.

check.

25.

X-Y

With

BEAM

amplitude

A

convenient

the

input

With

proper

and

B

input

BEAM

Selector

the

AMP

the

range

Input

to

Method

and

signal

of

Phasing

HORIZ.

position

cps

as

way

is

outlined

SENSITIVITY

and

the

connectors

Selector

A-B

(DIFF)-DC.

Eye

determining

Check

DEF.

PLATE

insert

indicated

of

measuring

switches

input

of

to

A-DC

Opening

sine-wave

below.

signal

each

eye

opening

SELECTOR

below.

the

of

coupled

amplifier,

and

the

still

frequencies

proper

each

place

UPPER

for

X-Y

in

amplitude

amplifier

to

both

the

BEAM

the

LOWER

phasing

UPPER

of

in

the

Input

the

the

Disconnect

The

until

completed.

26.

Switch

AMP,

Selector

VOLTS

of

A

Apply

the

vertical

50

ohms

On

4cm

of

and

then

called

Each

response.

all

verticals

the

calibration

Measuring

the

HORIZ.

the

HORIZONTAL

to

A-DC

PER

CM

the

input

amplifier.

on

each

each

position

1

k

c

sine-wave

switch

out

in

the

vertical

cables

will

Vertical

and

position.

sine-wave

end.

the

table

position

used

NOTE

now

DEF

DISPLAY

the

The

of

the

from

generator

below.

should

above.

be

done

of

the

Response

PLATE

SELECTOR

switch

SENSITIVITY

to

the

cable

should

SENSITIVITY

a

constant

to

be

verticals

to

A

amplitude

the

higher

checked

one

NORMAL,

switch

input

be

switch

at

a

has

been

to

TIME

to

connector

terminated

first

generator

frequency

for

the

time

BASE

Input

the

insert

proper

into

.2

of

as

5-8

Calibration

Procedure

—

Type

502A

.2

100

mVOLTS

50

mVOLTS

20

mVOLTS

10

mVOLTS

5

mVOLTS

2

mVOLTS

1

mVOLTS

.5

mVOLTS

.2

mVOLTS

.1

mVOLTS

Remove

27.

Adjusting

tions

Apply

nector

Constant

into

the

Place

the

SENSITIVITY

Adjust

of

vertical

Set

beam,

LEVEL

to

square

SENSITIVITY

Setting

VOLTS

PER

PER
PER
PER

PER

PER
PER
PER
PER

PER

PER

input

1

-kc

square

A

of

the

Standardizer.

proper

the

Input

the

output

deflection.

the

TRIGGER

the

TIME/CM

trigger

wave.

CM

CM

CM

CM

CM
CM
CM

CM
CM

CM

CM

signal

A

waves

vertical

resistance

Selector

switch

of

the

SELECTOR

the

signal.

4
4
4
4
4
4

4
4
4
4

4

from

Input

amplifier

The

in

Type

to

Initial

Freq

.

and

Amplitude

cm

at

cm

at

cm

at

cm

at

cm

at

cm

at

cm

at

cm

at

cm

at

cm

at

cm

at

oscilloscope.

Attenuator

from

the

cable

used

on

each

switch

the

.2

105

to

.5

mSEC

Adjust

1

kc

1

kc

1

kc

1

kc

1

kc

1

kc

1

kc

1

kc

1

kc

1

kc

1

kc

Type

through

end.

in

the

VOLTS

for

trigger

and

C410

should

Checking

Freq.

400
400

200
200
200

200
200

100
100

50

105

A-DC

PER

approximately

the

for

Min.

for

1

m

c

kc

kc

kc
kc
kc

kc

kc

kc

kc

kc

Compensa

to

input

the

Input

be

terminated

position

CM

off

the

TRIGGERING

an

undistorted

Amp.

Proper

Response

2.8

cm

2.8

cm

2.8

cm

2.8

cm

2.8

cm

2.8

cm

2.8

cm

2.8

cm

2.8

cm

2.8

cm

2.8

cm

con

Time

and

position.

3

cm

proper

Place

the

position

3

cm

an

undistorted

Place

position

3

cm

an

undistorted

28.

Adjusting

of

of

SENSITIVITY

and

adjust

vertical

the

SENSITIVITY

and

adjust

vertical

square

square

the

Type

deflection.

wave.

the

Type

deflection.

wave.

B

Input

switch

in

105

output

Adjust

switch

in

105

output

Adjust

Attenuator

the

C406A

the

C406G

2

VOLTS

for

and

5

VOLTS

for

and

Compensa

PER

CM

approximately

C406C

for

PER

CM

approximately

C406J

for



tions

Connect

connector



Constant

B-DC

PER

approximately

C440

Place

position

3

cm

an

Place

position

3

cm

undistorted

B

Standardizer.

position

CM

position.

for

an

the

and

of

vertical

undistorted

the

and

of

vertical

1

-kc

square

of

the

vertical

and

the

Set

3

centimeters

undistorted

SENSITIVITY

adjust

deflection.

square

SENSITIVITY

adjust

deflection.

square

wave.

waves

Place

SENSITIVITY

the

square

switch

the

Type

wave.

switch

the

Type

from

amplifier

the

Type

of

105

Adjust

105

Adjust

the

through

Input

switch

105

vertical

wave.

in

the

output

C407A and

in

the

output

C407G

Type

Selector

in

output

deflection.

2

VOLTS

for

5

VOLTS

for

and

105

to

the

input

switch

the

.2

VOLTS

amplitude

Adjust

PER

approximately

C407C

PER

approximately

C407J

for

input

Time

in

CM

for

CM

the

for

an

5-9

Calibration

29.

FEEDBACK

Set

the

Input

Selector

mVOLTS

cycle

for

standardizer.

Control

to

switch

made

to

Type

30.

TIME

switch

GERING

of

amplifier

UPPER

(See

the

the

Slope

square

the

While

the

to

The

final

for

either

502A.

TRIG.

Place

BASE

in

Calibrator

AC

Fig.

chassis.

sweep

Switch

PER

proper

observing

for

A

A-DC.

the

LEVEL

and

5-12)

Procedure

TIME/CM

to

CM.

waves

placing

Adjust

an

optimum

input

setting

an

optimum

input

channel.

LEVEL

HORIZ

AMP

the

.5

signal

place

position.

by

Adjust

will

trigger

in

BAL

switch

B-DC

From

to

for

the

connector

Check

of

the

DEF

position,

VOLTS

Control

to

the

Ground

placing

the

either

—

Type

of

and

the

the

oscilloscope.

of

attenuators

a

stable

display

square

for

a

FEEDBACK

square

Disconnect

CENT.

PLATE

PER

at

input

TRIGGER

a

TRIG.

correctly

the

+

502A

the

Type

the

SENSITIVITY

Type

display.

adjust

wave.

and

change

good

square

wave

SELECTOR

the

UPPER

CM

midrange.

A

of

the

the

junction

jumper

LEVEL

with

or

—

502A

105

apply

Refer

and

the

Now

the

wave.

BAL

Control

with

the

the

Type

BEAM

position,

Connect

UPPER

SELECTOR

of

between

CENT

the

TRIGGER

positions.

to

2

mSEC;

switch

3

cm

to

figure

the

capacitance

FEEDBACK

apply

the

Input

should

input

105

Switch

SENSITIVITY

and

the

50

BEAM

switch

R15

that

point

Control

SELECTOR

to

of

200

5-11

BAL

signal

Selector

applied

from

in

TRIG

millivolts

vertical

in

and

C

and

so

that

the

the

the

the

be

13

31.

STABILITY

.2



Disconnect

the

junction

TRIGGERING

and

set

the

ground.

the

the

STABILITY

midway

the

to

the

wiper

trace

from

to

from

when

tinue

until

the

is

the

of

LEVEL

TIME/CM

arm

Rotate

fully

counterclockwise

trace

first

rotate

the

brightens

ADJUST

between

ADJUST

Calibrator

R15

and

Control

control

of

the

the

STABILITY

appears

STABILITY

Control

the

signal,

STABILITY

on

and

two

voltages

C13

in

to

position.

ADJUST

again

so

remove

to

the

AUTOMATIC

.1m

SEC.

ADJUST

ADJUST

the

face

note

that

previously

the

ground,

Connect

Control

Note

of

Control

the

the

voltage

jumper

place

position

a

clockwise

the

crt.

clockwise

voltage.

noted.

voltage

reading

meter

Potentiometer

the

from

the

Con

Set



Fig.

of

R15

5-10

5-12.

the

and

TRIG

Grounding

LEVEL

C

1

3

is

grounded

the

CENT

junction

and

as

of

DC

shown.

R15

TRIG

and

controls,

Fig.

5-13.

Adjustment

32.

UPPER

Position

place

Place

PER

CM

input

UPPER

Place

position

will

trigger

SELECTOR

33.

LOWER

Leave

LOWER

and

the

PER

C

1

3.

For

the

adjustment

junction

of

CM

input

TRIGGER

A

A

a

the

the

BEAM

jumper

position

of

and

the

BEAM

LOWER

position.

of

BEAM

the

TRIGGERING

from

UPPER

BEAM

and

the

UPPER

trace

TRIGGER

set

on

either

Slope

Switch.

BEAM

jumper

Input

BEAM

the

LOWER

SELECTOR

the

apply

under

SELECTOR

the

DC

the

connected

Selector

Connect

switch

of

the

DC

TRIG

LEVEL

junction

SENSITIVITY

50

BEAM

vertical

the

TRIG

+

or

—

DC

TRIG

switch

SENSITIVITY

50

MV

BEAM

in

the

STABILITY

Control

of

MV

of

upper

switch

Control

positions

as

of

vertical

LOWER

R15

and

switch

Calibrator

amplifier.

horizontal

in

so

in

step

in

the

switch

Calibrator

amplifier.

ADJUST

to

in

the

that

of

in

DC

midrange

C

13

to

the

.2

Position

centerline.

UPPER

the

the

32.

Place

A-DC

the

position

control.

and

ground.

VOLTS

signal

sweep

TRIGGER

position

.2

VOLTS

signal

Place

the

and

the

DC

the

to

to

position

the

line.

Set

the

properly

SELECTOR

Calibrator

34.

TRIGGERING

the

centimeters.

Place

SWP

SWP

the

on

LENGTH

lower

DC

both

Slope

signal.

LENGTH

TIME/CM

LEVEL

trace

TRIG

the

Switch.

control

under

Control

+

switch

Control

and

—

Disconnect

in

in

for

a

the

lower

so

that

the

settings

the

the

1m

SEC

RECURRENT

total

sweep

horizontal

sweep

of

the

jumper

position

position.

length

center-

triggers

TRIGGER

and

and

Adjust

of

10.6

the

the

Calibration

35.

Single

Sweep

Reset

the

TRIGGER

MODE

TIME/CM

HORIZONTAL

Input

Selector

beam

being

SENSITIVITY

beam

being

AMPLITUDE

following

SELECTOR

controls:

DISPLAY

(of

used)

(of

used)

CALIBRATOR

Check

Procedure

To

trigger

proper

NORMAL

1

mSEC

NORMAL

A-AC

5

VOLTS

5

v

beam

—

PER

+AC

(

x1

Type

)

CM

502A

off

the

@i

5-11

Calibration

Procedure

—

TRIG

Type

LEVEL

502A

ASTIG

ASTIG

CENT

UPPER

LOWER

GEOM

AMP

NORM/MAG

REGIS

EXT

HORIZ

DC

HV

TEST

POINT

BAL

C311

X20

CAL

HV

HORIZ

CRT

GAIN

FOR

BEAM

Alignment

ADJ

HORIZ

REGIS

Clamp

MODE

HORIZ

Fig.

5-14.

Top

view,

Type

502A.

.2

MV/CM

GAIN

DC

TRIG

DEF

PLATE

SELECTOR

SWITCH

FEEDBACK

BAL

DC

BAL

DC

BAL

5-12

.2

MV/CM

DIFF

—

150

Fig.

5-15.

Left

C480

C469

side

view,

Type

502

A.

BAL

®i

Calibration

Procedure

—

Type

502A

2MV/CM

C440

C410

DIFF

C406C

C406A

C406G

---------

—

■

BAL

view,

Type

F'9-

C470

FEEDBACK

C469

-

C406J

2V/CM

DIFF

C407G

BAL

BAL

2MV/CM

GAIN

502A.

2V/CM

DC

R429

C407A

C407C

GAIN

TRIG

Fig.

5-17.

Bottom

view,

Type

502A.

5-13

NOTES

SECTION

6

a

BHS

C

cer

cm

comp

cps

crt

CSK

dia

div

EMC

EMT

ext

f

F

&

FHS

F

il

g

or

Ge

GM

h

hex

HHS

HSS

HV

I

D

incd

int

k

or

kc

m

m

c

PARTS

Replacement

Changes

components

improvements

ordering

any

suffix,

If

local

or

HS

V

amp

I

G

K

amperes

binding

carbon

ceramic

centimeter

composition

cycles

cathode-ray

counter

diameter

division

electrolytic,
electroyltic,

external

farad

focus

flat

fillister

giga,

germanium

guaranteed

henry

hexagonal

hex
hex

high

inside

incandescent

internal

kilohms

kilocycle

milli,

megacycle

parts,

instrument

a

part

Tektronix

head

per

sunk

and

head

head

or

head

socket

voltage

diameter

or

or

10

as

intensity

steel

10

steel

3

parts

to

Tektronix

they

developed

to

include

you

have

Field

steel

second

tube

metal

metal

steel

’

minimum

steel

kilo

(10

LIST

PARTS

are

become

in

type,

ordered

Office

ORDERING

available

instruments

available,

our

engineering

the

following

serial

will

contact

AND

number,

has

ABBREVIATIONS

cased

tubular

value

3

)

from

or

are

and

information

and

been

replaced

you

SCHEMATICS

INFORMATION

through

your

local

Tektronix

sometimes

to

department.

concerning

AND

give

you

in

modification

with

SYMBOLS

mm

meg

met.

μ

n

Ω

OD

OHS

P

PHS

piv

p

PMC

poly

Prec

PT

PTM

RHS

rms

sec

Si

S/N

t

TD

THS

tub.

v

Var

w

w/

w/o

WW

made

your

l

st

or

or

c

any

the

It

a

or

T

V

to

is

order:

number

new

change

M

accommodate

benefit

therefore

Part

or

millimeter

megohms

metal

micro,

nano,

ohm

outside

oval

pico,

pan

peak
plastic

paper,

polystyrene

precision

paper

paper

round

root

second

silicon

serial

tera,

toroid

truss

tubular

volt

variable

watt

with

without

wire-wound

of

the

important,

number

if

applicable.

improved

in

part

or

head

or

head

inverse

mean

number

or

head

Field

latest

part,

number.

or

or

10

10

diameter

steel

10

-1

steel

metal

tubular

or

plastic,

head

square

10

12

steel

Office.

improved

circuit

when

including

your

mega

-

6

’

2

voltage

cased

steel

(10

6

tubular,

)

molded

Use

*000-000

000-000

X000
000X

Part

first

Part

removed

Asterisk

or

reworked

Part

number

Internal

Front-panel

added

preceding

or

screwdriver

adjustment

SPECIAL

at

this

after

this

Tektronix

checked

indicated

NOTES

serial

serial

Part

components.

is

direct

adjustment.

or

connector.

AND

number.

number.

Number

replacement.

SYMBOLS

indicates

manufactured

by

or

for

Tektronix,

6-1

FRONT

REF.

NO.

6-2

1.

2.

3.

PART

333-748

004-174

387-785

358-010

210-013

210-494
210-012

210-207

129-063

358-169
210-010
210-206

210-445

NO.

SERIAL

EFF.

NO.

DISC.

Q

T

Y

.

1

PANEL,

front

1

COVER, panel,

1

PLATE, subpanel,

BUSHING,

1

LOCKWASHER,

1

NUT, hex,

1

LOCKWASHER,

1

LUG,

1

2

2
2
2

4

solder,

POST,

binding,

BUSHING,

LOCKWASHER,

LUG,

solder,

NUT,

hex,

alum.

alum.

binding

steel,

plastic

3/8-32

steel,

steel,

pot

5

steel,

SE10,

front,

3/8-32

plain,

way,

post,

10-32

x

internal

pot

charcoal

internal

long

DESCRIPTION

alum.

9/16

in.

3/8

x

1/2

x

internal

3/8

in.

charcoal

#10

x 3/8

in.

anodized

x

11/16

11/16

3/8

x

in.

1/2

in.

in.

®

REF.

NO.

4.

5.

6.

7.

8.

9.

10.

11.

12.

13.

14.

15.

16.

17.

366-148

210-413

210-840

210-013

210-012

210-207

366-215

366-145

210-413

210-840

210-013
210-012

210-207

366-144

366-038

358-029

210-413

366-220

358-178
366-145

358-029

210-413

129-020

355-503

200-072

210-206
210-445

131-064

406-244

211-025
210-812

210-004

210-224

210-406
366-144

366-038

210-413

210-840

210-013

129-053

200-103

355-507

210-223

210-455
366-225

210-583

210-940
210-046

210-424
210-816

200-382
331-047

337-187

PART

NO.

Parts

List

—

Type

502A

FRONT

0

10
10
10

10

T

y.

5

5
5
3

3
2

1

5

2
2

4

1

1

1

1

1

1

1

1
1

1

1
1

1
1

1
1

5
5

5

2

2

2
2

2
2

2
2

2

2

4

4
4
4

4
4

1

1

1

KNOB,

charcoal

NUT,

hex,

brass,

WASHER,

LOCKWASHER,

LOCKWASHER,

LUG,

KNOB,

KNOB,

NUT,

WASHER,

LOCKWASHER,
LOCKWASHER,

LUG,

KNOB,
KNOB,

BUSHING,

NUT,

KNOB,

BUSHING,

KNOB,

BUSHING,

NUT,

POST,

CONNECTOR,

BRACKET,

SCREW,

WASHER,

LOCKWASHER,

LUG,

NUT.

KNOB,
KNOB,

NUT,

WASHER,

LOCKWASHER,

POST,

KNOB,

NUT,

WASHER,

LOCKWASHER,

NUT,

WASHER,

COVER,

GRATICULE,

SHIELD,

solder,

charcoal

charcoal

hex,

solder,

charcoal

small,

hex,

charcoal

charcoal

hex,

binding,

Consisting

STEM,

CAP,

plated

Mounting

LUG,

NUT,

solder

hex,

charcoal

small,

hex,

binding,

Consisting

CAP,

binding

STEM,

Mounting

LUG,

NUT,

charcoal

hex,

knurled,

graticule

graticule

steel,

brass,

steel,

hex,

brass,

front

hex,

brass,

plated

solder,

hex,

nylon

4-40

fiber,

brass,

brass,

steel,

binding

solder,

hex,

’

/

4

steel,

rubber

5

3/8

.390

steel,

steel,

pot

plain

3

.390

steel,
steel,

pot

plain

red

brass,

3

panel,

brass,

3

assembly

of:

Hardware:

SE10

steel,

chassis

molded,

x

%

#10

steel,

#10

4-40

red

3

.390

steel,

assembly

of:

post,

post,

Hardware:

'/

steel,

-32

x

steel,

brass,

in.

light,

-32

I

D

internal

pot

/

8

-32

ID

internal

pot

/

s

-32

/

s

-32

10-32

in.

FHS

internal

non-locking,

x

/

s

-32

ID

internal

brass,

4

in.

'/

5

/

l6

ID

x

internal

graticule

10

cm

x

'/

2

x

9/16

internal

3

/

8

x

1/2

x

’

/

internal

3

/

8

3

/

8

-32x

x

’

/

2

charcoal

3

/

8

-32x

x

'/

2

(not

long

mount,

.160

3/

I6

x

’/

2

x

’

/

brass,

(not

hole

4

-28

in.

double

%

Vert

5

in.

DESCRIPTION

in.

in.

OD

3/8

x

11/16

3/8

in.

in.

16

in.

OD

3

/

8

x

1,

3

/

in.

,3

/

32

in.

in.

’

3

/

32

in.

in.

included)

x

%

in.

coaxial

x

3

/

4

x

#4

7

/

8

in.

in.

in.

16

in.

OD

3

/

8

x"/

3

/

8

x

"/

32

3

/

8

x

l3

/

included)

lock

x

round

3

/

8

x

3

/

32

chamfer

in.

OD

tooth

3

/

8

-24

x

10

cm

/

8

1

16

.400

x

x

l6

x

’/

-

3

long

16

x'/

in.

’

Horiz.

/

/

in.

]

/

2

in.

in.

2

in.

4

in.

in.

4

-28

in.

perimeter

OD

16

x

3/

in.

thread

x

.261

in.

ID

l6

in.

SERIAL

EFF.

NO.

DISC.

6-3

Parts

List

—

Type

502A

LEFT

SIDE

6-4

REF.

NO.

2.

3.

4.

5.

10.

11.

12.

13.

14.

15.

16.

17.

1.

6.

7.

8.

9.

PART

NO.

136-019

354-103

354-178

211-560

210-407

432-022

211-561

210-503

406-537

348-003

262-180

406-359

348-002
210-413

210-840
386-784

210-406

210-004

385-080

211

-503

211-507
210-457

343-004

211-510

211-511

210-803

210-457

366-068

344-047

348-002

406-635

213-035

210-438

124-068

337-238

337-606

211-541

384-547

200-263

262-179

348-002

343-006

211-511

210-803
210-006

210-407

210-202
211-503

210-407

386-845
210-406

210-004

SERIAL/MODEL

EFF.

20000
21070

NO.

DISC.

21069

Parts

List

—

Type

502A

LEFT

SIDE

a

T

Y.

1

1

1

1

1

1

2

1

1

3

1

SOCKET,

RING,

RING,

SCREW,

NUT,

BASE,

SCREW, 6-32

NUT,

BRACKET,

GROMMET,

SWITCH,

14

clamping

CRT

6-32

hex,

CRT

CRT

CRT

HORIZONTAL

pin

securing

x

1

brass,

rotator,

x

%

rotator,

support,

rubber,

assembly

(not

in.

RHS

6-32

alum.

in.

securing

5

/

x

hex

16

DESCRIPTION

shown)

}

/s,

in.

2-

3

/

4

x

3-

soc

FH

alum.

3-

in.

DEFLECTION

3

/

14

x

’

/

14

in.

cap

7

/

16

x

4-%

x

7

/

16

x

l-

’

A

in.

PLATE

SELECTOR,

wired

Includes:

1

3

2

2

1

2

2

1

1

BRACKET,

GROMMET,

NUT,

WASHER,

PLATE,

NUT,

LOCKWASHER,

ROD,

SCREW,

3

2

2

1

1

2

2

1

5

1

1

2

2

1

1
1

2

1

1

1

CLAMP,

SCREW,
SCREW,

WASHER,

NUT,

KNOB,

CLIP,

GROMMET,

BRACKET,

SCREW,

NUT,

STRIP,

SHIELD,

SHIELD,

SCREW,

ROD,

COVER,

SWITCH,

hex,

alum.

hex,

alum,

Mounting

SCREW,

NUT,

keps,

cable,

6-32
6-32

steel,

keps,

small,

deflection

low

thread

hex,

felt,

F

&

F

&

6-32

spacing,

dust,

INPUT

alum.

rubber,

brass,

steel,

brass,

hex,

6-32

Hardware:

6-32

x

%

x

’

steel,

black

rubber,

capacity,

brass

gray,

1,

alum.

1,

x

’

alum.

pot,

l-

’

A

3

/

a

.390

1-

3

A

x

4-40

steel,

’

/

4

x

3

/

16

in.

x

5

/

16

steel,

in.

in.

BHS

A

in.

BHS

6L

x

%

6-32

plate,

’

/

4

cutting,

l-72x

’

/

e

x

alum.

A

in.

FHS,

y

vernier,

SELECTOR,

x

’

/

4

-32

ID

l-

’

A

x

internal

x

7

A«

BHS

in.

6-32

plastic

in.

x

5

/

poly.

in.

pot

4-40

5

A

1

x

4

xl3-

5-

x

14

2

5-

in.

x

y

(not

’

/

4

’

A

%

in.

14

in.

BHS

x

in.

in.

3

/

4

100°

poly,

x

’

A

in.

in.

6

in.

in.

#4

included)

in.

mounting,

x

y

4

in.

with

in.

(not

CSK,

,3

A

4

in.

,7

/

wired

OD

pot

32

delrin,

PHS,

shown)

phillips

xl

phillips

in.

'A

in.

Includes:

1

2

1

2

1

1
1

1

1

2

4
4

GROMMET,

CLAMP,

SCREW,

WASHER,

LOCKWASHER,

NUT,

LUG,

NUT,

NUT,

PLATE,

NUT,

LOCKWASHER,

hex,

solder,

CRT

hex,

AC/DC

hex,

cable,

6-32

brass,

rubber,

x

steel,

brass,

rotator,

brass,

’

A

’

A

6L

steel,

6-32

SE6

6-32

Switch,

4-40

steel,

'/

4

in.

plastic

in.

BHS

x

%

internal

x

with

securing,

x

alum.

x

y

internal

in.

in.

#6

’

A

in.

2

wire

holes

alum.

’

A

in.

2-

y

14

x

2-29/64

in.

14

in.

#4

6-5

Parts

REF.

NO.

18.

19.

20.

21.

22.

23.

24.

25.

26.

27.

28.

29.

30.

31.

32.

33.

List

262-190

343-006

211-511

210-803

210-006

210-407

210-202

211-503

348-002

406-468

211

136-010

211-033

210-004

210-201

210-406

124-090

361

136-015

211-033

210-004

210-406

136-044

211-033

210-004

210-406

406-925

211-510

210-803

361-007

361

376-007

213-005

210-444

211-504

210-006
210-407

406-926

210-006
210-407

210-413

210-840
210-012

386-837

212-023
210-804

354-051

—

PART

NO.

-504

-009

179-396

210-457

124-100

124-089

-009

210-840

211

-507

210-458

213-104

Type

502A

SERIAL

EFF.

NO.

DISC.

10

LEFT

SIDE

Q

T

Y.

1

2

1

2

1

2

1

1

1
1

2
4

8

7

1

8

5

2

4

4

4

1

2
2
2

3

3

3

2

2

2

2

2
2

6
3

SWITCH,

BRACKET,

SCREW,

SOCKET,

SCREW,

LOCKWASHER,

LUG,

NUT,

STRIP,

SPACER,

SOCKET

SCREW,

LOCKWASHER,

NUT,

1

1

1

1

1

1

1
1

2

1

2

1
1
1

1

6

1

6

CABLE

SOCKET,

SCREW,

LOCKWASHER,

NUT,

BRACKET

SCREW,

WASHER,

NUT,

STRIP,

SPACER,

STRIP,

SPACER,

COUPLING,

NUT,

WASHER,

SCREW,

LOCKWASHER,

NUT,

BRACKET,

SCREW,

LOCKWASHER,

NUT,
NUT,

WASHER,

LOCKWASHER,

PLATE,

SCREW,

WASHER,

NUT,

RING,

SCREW,

INPUT

Includes:

CLAMP,

cable,

SCREW,

SCREW,

GROMMET,

6-32

WASHER,

LOCKWASHER,

NUT,

LUG,

Includes:

SCREW,

hex,

solder,

solder,

hex,

ceramic,

hex,

harness,

hex,

keps,

ceramic,

ceramic,

hex,

hex,

hex,
hex,

bulkhead

keps,

fan,

6-32

V.A.

6-32

7

pin,

4-40

brass,

nylon,

4-40

brass,

7

pin

4-40

brass,

switch,

6-32

steel,

steel,

nylon,

nylon,

set,

alum.

steel,

6-32

brass,

pot,

6-32

brass,
brass,

steel,

8-32

steel,

steel,

alum.

thread

steel,

brass

x

x

SE4

x

3/

x

x

1

x

x

x

SELECTOR

'/

2

x

y

2

6L

steel,

6-32

SE6

with

x

3/

16

rubber,

pot,

%

in.

without

5

/

16

in.

steel,

4-40

3

/

4

in.

molded

16

in.

steel,

4-40

V.A.

tube,

5

/

]6

in.

steel,

4-40

alum.

3

/

s

in.

6L

x

6-32

3

/

4

in.

molded

3

/

4

in.

molded

in.

long

8-32

x

'/

2

.390

'/

4

in.

steel,

6-32

alum.

5

/

16

in.

steel,

6-32

%-32

.390

steel,

%

in.

8S

x

3/

8-32

5-

3

forming

in.

in.

x

in.

alum.

BHS

internal

x

x

internal

x

left

bakelite

internal

x

BHS

3

/

8

x

x7

%

x

5/

ID

BHS

internal

x

'/

internal

x'/

ID

pot,

BHS

8

/

4

plastic

BHS

%

internal

x

2

BHS

%

center

Pan

3/

9

Pan

3

/

Pan

3/

1

in.

x

s/

1

with

in.

8

x

’/

'/

2

x

BHS

x

x

in.

x

,,

in.

#6x%

in.

'/

4

in.

16

notches,

]6

)8

x

14

notch,

notches,

in.

4

1

4

'/

2

’

/,

/

32

ID

DESCRIPTION

"B",

wired

#6

in.

wire

holes

s

/

B

x5

,s

/

l4

pin

HS,

with

#4

in.

clip

HS,

with

#4

in.

with

ground

HS

with

lockwasher

#4

in.

2-

7

/

8

x

3

in.

in.

clip

clip

2

tapped

HSS

long,

3

/

8

16

in.

OD

#6

in.

x

1

in.

#6

in.

in.

6

in.

OD

internal

%

in.

with

mounting

THS,

in.

lockwasher

mounted

lockwasher

lugs

mounted

mounted

holes

-32

in.

int.

x

’/

2

in.

phillips

ears

thread

6-6

REF.

NO.

34.

35.

36.

37.

38.

39.

PART

NO.

426-046
348-008
210-008

210-409

147-020

147-022
166-084
166-006

210-008

210-409

212-022

369-001

369-015

214-210

361

-007

179-279
179-696

387-017

211-559
210-457

366-032

355-049

SERIAL/MODEL

EFF.

20000

20686
20000 20685
20686

X20686

20000 20685

20686

20000 20685
20686

NO.

DISC.

20685

Parts

List

—

Type

502A

LEFT

SIDE

Q

T

Y.

1

3

6
6

1
1

2
2

2

2
2

1

1

1

1
1

1

1

2
2

1
1

MOUNT,

SHOCKMOUNT,

LOCKWASHER,

NUT,

MOTOR,

MOTOR,

TUBE,
TUBE,

LOCKWASHER,

NUT,

SCREW,

FAN,

FAN,

SPOOL,

SPACER,

CABLE

CABLE

PLATE,

SCREW,

NUT,

KNOB,

STUD,

hex,

spacing,
spacing,

hex,

alum.
alum.

harness,

harness,

air

keps,

small

CRT

fan

brass,

115
115

brass,

8-32

5'/

5

solder,

nylon,

deflector,

steel,

steel,

rotator,

motor,

rubber,

steel,

8-32

V

AC,

V

AC,

alum.
alum.

steel,

8-32x

x

1

y

2

2

in.

’

/

2

in.

assembly,

molded

110V

110

6-32

6-32

red,

with

.1567

.1567

in.

blade
blade

V

alum.

x

%

steel,

5-y

internal

x

.196
.196

internal

RHS

x

2

5

/

5

/

in.

5

/

3

/

in.

solid

16

shaft
shaft

ID
ID

]6

clock
clock

with

I6

16

3

/i6

in.

in.

5-

FHS,

in.

in.

DESCRIPTION

round,

#8

1

in.

1

in.

x

5

/

16

ODx'/

x

5

/

16

OD

#8

rotation,

rotation,

3

feet

’

/

16

x

6-

phillips

insert

x3-

’

/

4

’

/8

x

'/

2

long
long

x

of

x

holes

10-32

in.

t

%

'/
'/

solder

’

/

2

dia.

x

’/

2

in.

high

in.

long

in.

long

4

in.

bore

4

in.

bore

in.

in.

thread

6-7

Parts

List

—

Type

502A

RIGHT

SIDE

6-8

REF.

NO.

4.

7.

9.

10.

11.

12.

13.

14.

15.

1.

2.

3.

5.

6.

8.

PART

NO.

385-135

213-041

376-007

213-005

210-413

210-840

210-012

124-086

361-007

262-556

406-361

384-277
376-014
210-449
210-006

210-202

210-413

210-012

210-840

210-407

210-803

210-006

211-510

210-803

210-457

343-004

211-511

210-803

210-457

210-413

210-840

210-012

210-207

337-330

211-541

211-542

385-141

211-522

200-259

200-293
406-372

211-507

210-006

210-407

343-002

211-510

210-863

210-006
210-407

124-100

361-007

124-088

361-009

SERIAl/MODEl

EFF.

DISC.

NO.

Parts

List

—

Type

502A

RIGHT

SIDE

O

T

Y.

2
2

1

SCREW,
SCREW,

COUPLING,

thread

thread

1

cutting,

cutting,

in.

long

6-32
6-32

with

DESCRIPTION

x

%

x

%

2

tapped

in.

truss

HS,

phillips

in.

truss

HS,

phillips

holes

Includes:

2

1
1
1

1
1

1

SCREW,

NUT,

WASHER,

LOCKWASHER

STRIP,

SPACER,

SWITCH,

hex,

ceramic,

set,

8-32

brass

steel,

steel,

3

nylon,

molded

TIME/CM,

3

.390

/

4

/

a

-32

in.

x

%

ID

pot,

x2

wired

in.

x

’/

x

HSS

2

in.

%

6

internal

notches,

in.

OD

%

x

’

/

2

in.

clip

mounted

Includes:

2

1
1

2

1

1

3

2

1

2

2
2

BRACKET,

ROD,

COUPLING,

NUT,

LOCKWASHER,

LUG,

NUT,

LOCKWASHER,

WASHER,

NUT,

WASHER,

LOCKWASHER,

4
4
4

1

1
1
1

2

2

1

1

1

2

1
1

1

1

2

1

2

2
2

1
1

1

1

1

1

2

1

2

CLAMP,

SCREW,

WASHER,

NUT,
NUT,

WASHER,

LOCKWASHER,

LUG,

SHIELD,

SCREW,

SCREW,

ROD,

SCREW,

COVER,

COVER,

BRACKET,

SCREW,

LOCKWASHER,

NUT,

CLAMP,

SCREW,

WASHER,

LOCKWASHER,

NUT,

STRIP,

SPACER,

STRIP,

SPACER,

steel,

hex,

solder,

hex,

hex,

Mounting

SCREW,

WASHER,

NUT,

keps,

cable,

6-32

steel,

keps,

hex,

brass,

steel,

solder,

H.V.,

6-32
6-32

transformer

6-32x%

capacitor,

capacitor,

Horiz.

6-32

hex,

brass,

cable,

6-32

steel,

hex,

brass,

ceramic,

nylon,

ceramic,

nylon,

switch,

shaft

pot,

brass,

SE6

brass,

steel,

brass,

steel,

Hardware:

6-32

steel,

5

/

x

y

steel,

steel,

pot

alum.

x%

x

5

/

x

5

/,

steel,

3

/

x

%

steel,

3

molded

3

molded

alum.

y

8

wire

5-40

steel,

with

%-32

steel,

.390

6-32

6Lx%

steel,

x

%

in.

6L

steel,

6-32

16

in.

plastic

2

in.

BHS

6L

x

%

6-32

x

3

/

8

-32

.390

ID

pot,

plain,

4

x

in.

FHS,

16

in.

truss

support,

in.

FHS,

polyethylene,

polyethylene,

Display

6

in.

BHS

internal

6-32

x

16

in.

plastic

in.

BHS

for

#10

internal

6-32

x

/

4

in.

x

/

4

in.

x

2-'/

in.

steel,

x

]

/

internal

2

x

pot

ID

x

x

'/

in.

internal

(not

BHS

x

3

/

8

x

in.

5

/

16

x

’

/

2

x

%

3

/

8

5-

,3

alum,

Switch,

y

4

screw

’

/

4

1

notch,

4

notches,

2

x

dia.

xl8-

.041

4

in.

wire

'/

2

in.

internal

%

6

4

in.

included)

in.

5

/

16

in.

in.

6

in.

internal

in.

/

32

x

100°

HS,

100°

#6

in.

#6

in.

3-'/

#6

holes

in.

#6

in.

OD

1-%

CSK,

phillips

hex,

phillips

3-

’

3-'/

alum.

clip

clip

4

x

3,

/

64

in.

%

OD

%

x

in.

phillips

3

/

/

16

x

32

x

mounted

mounted

’

/

2

in.

dia.

x

’

/

2

8

1.365

1.365

3

x

y

x3-

in.

2

in.

3-%

long

in.

,5

/

64

in.

in.

dia.

in.

dia.

x

’/

2

in.

@i

6-9

Parts

REF.

NO.

16.

17.

18.

19.

20.

21.

22.

23.

24.

25.

26.

27.

28.

29.

30.

31.

List

337-256

211

210-457

179-395

348-003

337-007

441

348-039

406-399

210-407

210-006
211-507

210-457

343-042
211-507

210-803

210-006

210-407

179-262

179-782

262-555

406-401

406-402
214-153

384-271

376-014

385-111

211

210-803

384-279

354-201

210-595

210-011

200-263

384-545
352-008

211-031

210-406

210-202
211-538

210-407
352-006

211-031

210-406

211-023

210-406

—

PART

NO.

-507

-494

-507

Type

502A

SERIAL

EFF.

NO.

DISC.

RIGHT

SIDE

Q

T

Y.

SHIELD,

V.A.

chassis,

5/

16

in.

6-32

V.A.

5

/

7

/

s

in.

ID

alum.

assembly

6-32

steel,

5

/

16

in.

6-32

5

/

16

in.

5

/

16

in.

6L

x

%

steel,

6-32

Trigger

Position

double

'/

8

in.

dia.

pot,

wire

’

/

4

x

%

Hardware:

x

5/

16

steel,

6L

switch

’

/

4

-32

steel,

pot,

vernier,

alum.

neon

1

in.

FHS

4-40

with

5

/

16

in.

6-32

neon,

1

in.

FHS

4-40

%

in.

4-40

alum.

right

16

%

'/

FHS

1

2

2

1

2

4

1

4

4

4

4

4

4

2

2

2

2

2

1
1
1

1
1

8

1

1

2

2

4

1
1
1
1

1

1

2

2

4

1

1

1
1

1

2
2

4

SCREW,

NUT,

CABLE

GROMMET

SHIELD,

CHASSIS,

SHOCKMOUNT,

BRACKET,

NUT,

SCREW,

NUT,

SCREW,

NUT,

CABLE

SWITCH,

6-32

keps,

steel,

harness,

rubber,

tube,

V.A.

shockmount,

hex,

LOCKWASHER,

CLAMP,

WASHER,

LOCKWASHER,

CABLE

Includes:

BRACKET,
BRACKET,

FASTENER,

ROD,

COUPLING,

ROD,

ROD,

RING,

NUT,

LOCKWASHER,

COVER,

ROD,

HOLDER,

SCREW,

NUT,

LUG,

SCREW,

NUT,

HOLDER,

SCREW,

NUT,

SCREW,

NUT,

brass,

6-32

keps,

cable,

6-32

steel,

hex,

brass,

harness,
harness,

SENSITIVITY,

shaft

nylon,

Mounting

SCREW,

WASHER,

extension,

retaining

hex,

alum.

dust,

spacing,

melamine,

4-40

hex,

brass,

solder,

6-32

hex,

brass,

melamine,

4-40

hex,

brass,

4-40

hex,

brass,

steel,

front

rear

x

x

x

snap,

6-32

x

SE6

x

x

x

BHS

x

5

/

16

in.

x

l-

3

x

2-'/

steel,

x

'/

4

in.

internal

BHS

x

5

/

16

(half)

BHS

in.

internal

x

’

/

4

and

wired

x

9-

steel,

in.

tapped

(not

in.

BHS

x

%

assembly

x

'/

2

internal

4

x

9-'/

bulb,

x

3/

)6

2

wire

FHS,

x

'/

4

double,

x

3/

16

x

3

/

16

DESCRIPTION

3-'/

4

x

5-

7

/

in.

/

4

in.

high,

e

x

2-

7

/

8

x

’

A

x

-875

#6

in.

plastic

#6

in.

Balance

prong

delrin

5

/

s

in.

long

.041

in.

5-40

included)

in.

in.

%

in.

poly,

l7

/

32

4

in.

single,

in.

holes

100°

CSK,

in.

molded

in.

in.

14

x

’/

2

in.

with

spring

6-'/

14

in.

x

.531

in.

dia.

in.

thru

xl

in.

black molded

phillips

6-10

TOP

Parts

List

—

Type

502A

6-11

Parts

REF.

NO.

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.

13.

14.

15.

16.

17.

List

136-035

211

210-803

210-457

122-061

211

210-457

337-196
406-239

211

210-457
211-514

166-033

210-803

210-457

361

385-120
211-538

337-575
348-012

211-541

211-542

212-040
212-008
210-458

210-413

210-207

210-012

348-012

381-204

381

337-005

346-001

385-120

—

PART

NO.

-534

-559

-559

179-780
124-090

-009

441-495

211-504
210-803

348-002

212-039

-073

136-015

211

-033

210-004

210-406

124-045

210-004

210-406

124-100

361-007

124-089

361-009

211-507
441-492

212-040
210-458

Type

502A

SERIAL

EFF.

NO.

DISC.

12

TOP

Q

T

Y.

2
2
2
2

1

4
4

1
1

6
6

1
1

2

1

1

6

1
1

1

2
2

1

1

3
2

5

2
2

1

1

1

1

2

1

4

2

1

1

2

4

2

1

1

2

2

1

1

2
4

1

1

1

4
4

SOCKET,

SCREW,

WASHER,

NUT,

ANGLE,

SCREW,

NUT,

SHIELD,

BRACKET,

SCREW,

NUT,

SCREW,

TUBE,

WASHER,

NUT,

CABLE

STRIP,

SPACER,

ROD,

SCREW,

SHIELD,

GROMMET,

SCREW,
SCREW,

CHASSIS,

SCREW,
SCREW,

NUT,

SCREW,

WASHER,

NUT,

LUG,

LOCKWASHER,

GROMMET,

GROMMET,

BAR,

SCREW,

BAR,

SOCKET

SHIELD,

SCREW,

LOCKWASHER,

NUT,

STRAP,

STRIP,

LOCKWASHER,

NUT,

STRIP,

SPACER,

STRIP,

SPACER,

ROD,

SCREW,

CHASSIS,

SCREW,

NUT,

6-32

keps,

frame,

steel,

keps,

CRT

6-32

keps,

6-32

spacer,

keps,

harness,

ceramic,

shield

6-32

H.V.

6-32

6-32

8-32
8-32

keps,

hex,

solder,

alum.

retaining,

socket,

hex,

mounting,

bakelite,

hex,

ceramic,

ceramic,

shield,

keps

graticule

x

steel,

steel,

steel,

5

CRT

x

steel,

x

steel,

steel,

nylon,

support,

x

alum.

rubber,

x'/

x

F

&

x

x

steel,

6-32

x

steel,

brass,

pot

rubber,
rubber,

20-

8-32

x

4-40

x

brass,

brass,

nylon,

nylon,

support,

6-32

x

sweep,

8-32

x

steel,

5

/

16

6L

x

6-32

ext.

6-32

6-32

in.

spring,

3/

e

in.

6-32

3

/

4

in.

alum.

6L

x

6-32

F

&

3

/

4

in.

molded

5

/

16

4

in.

5

/

u

1,

alum.

3

/

8

in.

'/

2

in.

8-32x

%

in.

6Lx

3

/

plain,

steel,

7

/

16

in.

%

in.

alum.

2

’

/

32

5

/|

6

steel,

4-40

H.V.

insulating,

steel,

4-40

3

/

4

molded

3

/

4

molded

5

/

16

alum.

3

/

e

in.

8-32x'V

light

in.

%

top

x

3/

in.

5-

5

in.

e

-32

%

’

in.

in.

in.

in.

x

%

x

100°

BHS

.180

e

1

x

nylon,

’

/

/

e

FHS,

100°

BHS

BHS

3

/

e

pot,

/

4

THS

3

in.

internal

internal

x

x

x

nylon,

FHS,

DESCRIPTION

with

ground

PHS,

with

in.

5

/

16

in.

left,

alum.

in.

100°

5

/

l6

in.

sp.

phosphor

CSK,

x

5

/

l6

in.

ID

x

’

Z,

in.

x

5/

16

in.

9

notches,

V

4

FHS,

100°

l6

x

3-

’

7

/

32

in.

100°

THS,

phillips

’

/,

6

x

5-

1

FHS

n

/

32

in.

in.

x

y

2

in.

3

/

8

in.

internal

in.

in.

long,

blue

/

l6

x

'/

2

x

ID

Pan

HS,

#4

x

3/

l6

in.

transformer,

'/

2

x

#4

3/

16

in.

1

notch,

7

notches,

'/

4

BHS

3

/

4

x

4-

7

/

100°

32

in.

lockwasher

20-

CSK,

phillips

OD

clip

xl-

27

/

CSK

x

1

-

CSK

'/

16

x

3

/e

vinyl,

1

-

3

/

4

with

alum.

2-'/

2

clip

clip

xl-

27

e

x

21

phillips

lug

7

/

16

in.

phillips

bronze

x

3/

8

in.

mounted

32

in.

3

/

4

in.

5-

3

/

e

in.

x

'/

2

in.

with

in.

lockwasher

5

/

16

in.

mounted

mounted

/

32

in.

-'/

16

in.

long

handle

x

4-'/

4

in.

6-12

REF.

NO.

18.

19.

20.

21.

22.

23.

24.

25.

26.

27.

PART

136-008

213-044
348-005
343-043

124-091

361-009

136-015

213-044

348-031

179-778
124-088

361

262-178

210-413

210-012

376-014

210-413

210-840

NO.

-009

Parts

List

—

Type

502A

TOP

Q

11

22

16

T

Y.

3

6

4

1

8

1

1

2

4

1

2

1
1

9

9

SOCKET

SCREW,

thread

GROMMET,

CLAMP,

#20

STRIP,

ceramic,

SPACER,

SOCKET

SCREW,

GROMMET,

CABLE,

STRIP,

SPACER,

SWITCH,

NUT,

WASHER,

nylon,

thread

harness,

ceramic,

nylon,

TRIGGER

Includes:

NUT,

hex,

LOCKWASHER

COUPLING, pot

hex,

steel,

rubber,

wire

snap-in,

brass,

brass,

cutting,

’

/

for

3

/

4

in.

molded

cutting,

polypropylene,

sweep

3

/

4

in.

molded

LEVEL,

3

/

s

steel,

wire

3

/

s

-32

.390

ID

2

xll

-32

5-32

in.

neon

5-32

x4

pot

steel,

x

’/

x

notches,

notches,

wired

x

2

’

/

DESCRIPTION

x

3

/

16

in.

bulbs

clip

x

3

/

l6

in.

y

clip

y

2

in.

internal

%

.041

in.

in.

16

in.

OD

Pan

mounted

Pan
4

in.

mounted

x

’/

dia.

H

steel,

phillips

H

steel,

phillips

dia.

2

in.

SERIAL

EFF.

NO.

DISC.

6-13

Parts

List

—

Type

502A

BOTTOM

6-14

REF.

NO.

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.

13.

14.

15.

16.

17.

18.

19.

337-237

210-004

210-406

406-468

211

136-010

211

210-004

210-201

210-406

124-090

361

136-015

211

210-004

210-406

348-002

136-044

211-033

210-004

210-406

179-263

406-635

213-035

210-438

124-091

361-009

136-008

213-044

386-253

211-534

210-006

210-407

386-255

211

210-006
210-407

386-254

211-543

210-006
210-407

348-005

212-546

210-812

210-010

210-564

212-037

210-808
210-809
210-008

210-462

212-004

179-779

122-065

212-039

210-458

PART

NO.

-504

-033

-009

-033

-534

Parts

List

—

Type

502A

BOTTOM

Q

10

16

T

Y.

SHIELD,

alum.

1-%

x

’

1

2
2

1

2

4

8

7

1

8

5

2
4

4

4

3

1

2

2

2

1

1

2

2

8

2

4

2

4

4

4

1

2

2

2

3

6

6

6

1

4

4

4

3

2

2

2

2

8

8

1

1

1

1

LOCKWASHER,

NUT,

hex,

brass,

BRACKET,

SCREW,

SOCKET,

SCREW,

LOCKWASHER,

LUG,

NUT,

STRIP,

SPACER,

SOCKET

SCREW,

LOCKWASHER,

NUT,

GROMMET,

SOCKET,

SCREW,

LOCKWASHER,

NUT,

CABLE

BRACKET,

SCREW,

NUTS,

STRIP,

SPACER,

SOCKET

SCREW,

PLATE,

SCREW,

LOCKWASHER,

NUT,

PLATE,

SCREW,

LOCKWASHER,

NUT,

PLATE,

SCREW,

LOCKWASHER

NUT,

GROMMET,

SCREW,

WASHER,

LOCKWASHER,

NUT,

SCREW,

WASHER,
WASHER,

LOCKWASHER,

NUT,

SCREW,

CABLE,

ANGLE,

SCREW,

NUT,

solder,

hex,

ceramic,

hex,

hex,

harness,

hex,

ceramic,

metal,

hex,

metal,

hex,

fiber,

hex,

hex,

hex,

harness,

keps,

V.A.

6-32

7

4-40

brass,

nylon,

4-40

brass,

7

4-40

brass,

low

thread

nylon,

thread

6-32

brass,

6-32

brass,

6-32

brass,

10-32

fiber

stainless,

8-32

brass,

brass

alum.

8-32

frame,

8-32

pin

pin

brass,

steel

x

x

SE4

x

rubber,

x

x

x

large,

x

rubber,

x

x

x

steel,

4-40

pot, alum.

'/

4

in.

without

5/

16

in.

steel,

4-40

3

/

4

in.

molded

5/

16

in.

steel,

4-40

tube,

s

/i<s

i

n

steel,

4-40

Calibrator

capacity

cutting,

l-72x

3

/

4

in.

molded

cutting,

small,

5

/

l6

in.

steel,

6-32

large,

5

/

)6

in.

steel,

6-32

5

/

16

in.

steel,

6-32

x4-y

2

#10

steel,

l-

3

/

4

centering,

centering

steel,

8-32

5

/

16

in.

power

ext.

%

in.

8-32x

/

internal

BHS

internal

x

x

internal

’

/

4

bakelite,

-

internal

x

xll

capacitor

internal

capacitor

internal

capacitor

internal

'/

2

in.

10-32x

in.

bottom,

THS

2

in.

x

3

/

16

%x5-

center

Pan

HS,

3

/

16

9

notches,

Pan

HS,

x

3

/

16

in.

Pon

HS,

3

/

16

Switch

pot

4-40

5

/

32

notches,

5-32

PHS,

x

’

/

4

PHS,

x

%

RHS

x

'/

4

in.

hex

internal

Fil

HS

resistor,

internal

x

'/

2

x

BHS

,,

/

32

DESCRIPTION

#4

in.

,5

/

t6

pin

with

lockwasher

#4

in.

clip

with

#4

with

with

#4

4

in.

in.

3

/

)6

mounting

lockwasher

#6

mounting

lockwasher

#6

mounting

#6

HS

#10

8

in.

#8

/

64

thick

lockwasher

ground

lockwasher

clip

in.

double

20

25

20-

in.

in.

mounting,

x'/

x

with

in.

with

in.

in.

3

/

resistor,

23

alum.

in.

in.

mounted

delrin

PHS,

mounted

Pan

w.

w.

body,

7

/

]6

lugs

phillips

H

steel

chamfered

25

in.

blue

w

res.

mtg.

vinyl

SERIAL

EFF.

NO.

DISC.

6-15

Parts

REF.

NO.

20.

21.

22.

23.

24.

25.

26.

27.

28.

29.

30.

31.

32.

33.

34.

List

—

PART

NO.

210-202

211-504
210-407

348-004

441-493

212-040
210-458

124-087

361-009

211-510
210-202

210-006

210-407

136-050
213-055

136-011

213-044

136-015

213-044

124-106

361-007

406-927

211-510

211

210-803

210-457

441

348-039

406-399

210-407

210-006
211-507

210-457

337-259

211

337-007
262-555

406-401

406-402

214-153

384-271

376-014

385-111

211-507

210-803

384-301

354-201

210-595

210-011

Type

-522

-494

-507

502A

SERIAL/MODEL

EFF.

DISC.

NO.

18

BOTTOM

Q

T

Y.

LUG,

solder,

SE6

with

in.

6-32

alum.

/

8

in.

8-32

3

/

4

in.

molded

in.

with

steel,

6-32

4

cutting,

cutting,

cutting,

7

/

I6

in.

molded

in.
in.

6L

x

6-32x

assembly

x

]

/

4

steel,

/

16

in.

6-32x

/

16

in.

8

ID

2

BHS

x

%

100°

x

x3

BHS

2

internal

x

pin

switch,

BHS

FHS

%

%

steel,

in.

internal

BHS

alum.

BHS

x

l-

1
1

1

3

1

6
6

2

2

2

1

1

2

2

4

2

4

9

2
4

1

2

2

6

4

1

4

4
4
4

4

4

1

2

4

1

SCREW, 6-32

NUT,

GROMMET,

CHASSIS,

SCREW,

NUT,

STRIP,

SPACER,

SCREW,

LUG,

hex,

8-32

keps,

ceramic,

nylon,

6-32

solder,

brass,

rubber,

power,

steel,

LOCKWASHER,

NUT,

hex,

brass,

SOCKET,

SCREW,

SOCKET,

SCREW,

transistor,

thread

ground

thread

SOCKET

SCREW,

STRIP,

SPACER,

BRACKET,

SCREW,
SCREW,

WASHER,

NUT,

CHASSIS,

thread

ceramic,

6-32

6-32

keps,

nylon,

Sensitivity

steel,

steel,

V.A.

SHOCKMOUNT,

BRACKET,

NUT,

hex,

shockmount,

6-32

LOCKWASHER,

SCREW,

NUT,

SHIELD,

SCREW,

SHIELD,

SWITCH,

6-32

keps,

V.A.

6-32

tube,

SENSITIVITY,

steel,

x

%

x

3

x

%

SE6

x

%

x

%

alum.

x

5

lower,

x

5

7

/

wire

’

/

4

in.

23

/

,1

/

32

wire

'/

4

with

2-56x

5-32

2-56x

xll

in.

5

/

16

x

2-%

5

/

16

3

/

4

wired

DESCRIPTION

holes

in.

32

x

10-

FHS

in.

notches,

holes

#6

in.

flat

3

/

16

x

3

/

16

3

/

16

notches,

shield,

in.

x

’

/

2

x

#6

in.

2-

7

/

8

x

in.

high,

2-%

.875

2-

13

/

16

clip

saddle

in.

in.

in.

alum.

7

/

8

with

clip

x

x

x

x

21

mounted

PHS

Pan

PHS

6-

’

/

.531

’

/

2

-7

14

H

steel

mounted

16

in.

in.

in.

spring

in.

Includes:

1

1

8

1

1

2

BRACKET,

BRACKET,

FASTENER,

ROD,

COUPLING,

ROD,

2

4

1

1

1

1

ROD,

RING,

NUT,

LOCKWASHER,

shaft,

nylon

Mounting

SCREW,

WASHER,

extension,

retaining

hex,

alum.

front

rear

snap,

’

/

8

pot,

Hardware:

6-32

steel,

steel,

in.

x

5

switch

’

/

4

-32x'/

double

dia.

wire

/

]6

in.

6L

x

assembly

internal

x

steel,

(not

%

2

pronged,

9-

5

/

8

BHS

in.

in.

in.

long

.041

in.

included)

'/

4

in.

delrin

dia.

6-16

REAR

Parts

List

—

Type

502A

6-17

Parts

REF.

NO.

1.

2.

3.

4.

5.

6.

7.

8.

9.

List

—

PART

NO.

387-786
387-787

213-104

386-427

129-063

358-169

210-010

210-445

210-206

380-017

212-031

210-458

210-402

378-022
378-763

334-679

213-088
352-010

210-873

200-015

131-102

129-041

200-185

210-003

210-551

211-015

214-078

377-041

386-933

211-537

210-457

134-067

Type

SERIAL/MODEL

502A

EFF.

DISC.

NO.

REAR

a

T

Y.

PLATE,

rear

1
1

4

1

2

1

2

3

1

2

2

2

2

PLATE,

SCREW,

PLATE,

POST,

BUSHING,

LOCKWASHER,

NUT,

LUG,

1

HOUSING,

SCREW,

NUT,
NUT,

1

1

1

FILTER,

FILTER,

TAG,

SCREW,

1
1

1

1

HOLDER,

WASHER,

CAP,

CONNECTOR,

Consisting

1

1

2
2

1

2

1

1

POST,

COVER,

LOCKWASHER,

NUT,

SCREW,

PIN,

INSERT,

PLATE,

subpanel,

thread

brass,

binding,

binding

hex,

steel,

solder,

air

8-32xl-

keps,

steel,

cap,

hex,

air,

Scott

screen,

metal

thread

fuse,

rubber,

fuse,

3AG,

ground,

3

hex,

4-40

connecting,

black

brass,

overlay,

wire

Mounting

2

2

4

SCREW,

NUT,

PLUG,

keps,

"D"

rear,

forming

’

/|

4

xl-

5

way,

steel,

10-32

SE10

filter,

’

/

4

brass,

foam,

alum.

serial

forming

3AG

raw

chassis

of:

steel

motor

steel,

x'/

urea

2-y

Hardware:

6-32

x

steel,

hole,

alum.

’

/

post,

internal

x

long

alum,

in.

8-32

6'/

number

'/

2

ID

steel,

4-40

2

in.

brass

8

in.

%

nylon,

alum.

32

x

8-32

mount,

in.

6-32

#6

x

in.

ground

charcoal

charcoal

%

in.

RHS

11

/

32

x

charcoal,

2

x

6'/

insert

#4

x

,

'/

base

external

x

y

4

RHS

motor

(not

THS,

x

gray

DESCRIPTION

%

in.

#10

blue

vinyl

in.

5

/

16

in.

3

/

2

x

3

/

16

x

y

4

in.

)4

OD

x 3/

3

wire,

#4

in.

base

included)

phillips

5

/

14

in.

THS,

plated,

4

x

8-

in.

PHS,

64

male

mounting

phillips

open

’

/

4

x

phillips

in.

8-'/

end

4

in.

6-18

®i

CABINET

Parts

List

—

Type

502A

REF.

NO.

1.

2.

3.

387-055

214-057

210-480

213-033

210-847

105-007

387-056

214-057

210-480

213-033

210-847

105-007

387-057

214-057

210-480

213-033

210-847

105-007

PART

NO.

Q

SERIAL

EFF.

NO.

DISC.

T

Y.

1

2

1
1

1

1
1

2

1

1

1

1

1

4

1
1

1

1

PLATE,

Includes:

FASTENER,

Consisting

NUT,

SCREW,

WASHER,

STOP,

PLATE,

Includes:

FASTENER,

Consisting

NUT,

SCREW,

WASHER,

STOP,

PLATE,

Includes:

FASTENER,

Consisting

NUT,

SCREW,

WASHER,

STOP,

cabinet

cabinet

cabinet

side

latch

of:

nylon,

steel,

nylon,

steel

side

latch

of:

nylon,

steel,

nylon,

steel

bottom, textured

latch

of:

nylon,

steel,

nylon,

steel

left,

assembly

(each)

large

'/

2

x

.164

right,

assembly

(each)

large

'/

2

x

.164

assembly

(each)

large

’

/

2

x

.164

textured

with

'/

2

x

ID

textured

with

'/

2

x

ID

with

'/

2

x

ID

8-32

8-32

8-32

DESCRIPTION

blue

insert

in.

x

.500

in.

blue

insert

in.

x

.500

in.

blue

vinyl

insert

in.

x

.500

in.

vinyl

OD

OD

OD

vinyl

6-19

Parts

List

—

Type

502A

ACCESSORIES

REF.

NO.

1.

2.

3.

4.

5.

6.

6-20

PART

NO.

378-539

012-031

103-013

010-125

013-004

161-010

SERIAL/MODEL

EFF.

DISC.

NO.

a

T

Y.

1
1

1

2
2

1

FILTER,

polarized

CORD,

patch,

ADAPTER,

PROBES,

ADAPTER,

CORD,

power

P6006,

binding

power,

banana

42

16

light,

cord,

post

gauge,

5-

plug

3

in.

”

/

wire

8

16

both

ft.,

x

to

5-

3

DESCRIPTION

n

/i«

in.

ends,

18

2

wire

wire

in.

red

®!

Parts

List

—

Type

502A

Values

Ckt.

No.

B

1

24

B

1

67

B331

M

B331

N

B490

B601

B602

Tolerance

Tolerance

are

±20%

of

fixed

all

unless

Tektronix

Part

Number

150-027

150-027

150-027

150-027
150-027

150-001

150-001

unless

electrolytic

marked

otherwise

Variable.

indicated.

capacitors

ELECTRICAL

Description

Neon,

Type

Type

Type
Type
Type

as

NE-23

NE-23
NE-23

NE-23

NE-23

follows

Type
Type

#47

#47

Capacitors

(with

Neon,

Neon,

Neon,
Neon,

Incandescent,
Incandescent,

are

PARTS

Bulbs

READY

ON

UNCALIBRATED

Graticule

Graticule

exceptions):

Light
Light

LIST

S/N

Range

3

V

51

V

351

V

C10

C

11

C

1

3

C24

C31

C44

C

1

31

C

1

37

C

1

41

C160A

C160B

C160C

C160D

C160E

C160F

C160G

Cl

67

C180A

C180B

C180C

—

50

V

=

-10%,

+250%

350

V

-

-

450

=

-10%,

+100%

V

=

-10%,

+50%

500

283-002
283-000

283-001

283-000
285-510

281-510

281-510
281-503

281-541

281-007

283-534

281-010

*291-008

*291

-007

283-000

281-528

285-501

285-510

.01

μf

.001

.005

.001

.01

μf

22

pf

22

pf

8

pf

6.8

pf

3-12

82

pf

4.5-25

.001

.01

μf

.1

μf

1

μf

.001

82

pf

.001

.01

μf

Disc

Type

μf

μf

μf

pf

pf

μf

μf

μf

Timing

.

Disc
Disc

Disc

Disc

Type
Type

Type

Mica

Series

Type

MT

Cer.

Cer.

Cer.

Cer.
Cer.

Cer.

Cer.

MT

MT

Var.

Var.

500
500
500

400

500
500

500v

500

500

500

500

600

400

v
v
v
v
v

v
v

v

v

v
v
v
v

±.5

pf

10%

5%

±

’

/

2

%

±

’

/

2

%

10%

X21070-up

C180D

C181
C311

C312
C350

285-526

281-528

281-010

281-521

283-001

.1

μf

82

pf

4.5-25

56

pf

.005

400

MT

Cer.

Disc

Type

Cer.

Cer.

pf

μf

Var.

500

500
500

v
v

v
v

10%

10%

6-21

Parts

List

—

Type

502A

Ckt.

No.

C400

†

C401

†

C406A

C406C

C406G

C406J

C406L

C407A

C407C

C407Gt

C407J

C407L

C409B

C409Ct

C409Dt

C409E

C409F

C409G

C409H

C409.l

Capacitors

Tektronix

Part

†
†

†

†
†

†

†

†

†

†

†
†

†

†

†

Number

*295-066

281-012

281-005

281-012

281-005

281-546

281-012
281-005
281-012

281-005
281-546

281-506

281-513

281-528

281-524
283-513

283-522

283-524

283-035

.1

μf

7-45

1.5-7

7-45

1.5-7

330

7-45

1.5-7

7-45

1.5-7

330

12

pf

27

pf

82

pf

150

220

470

750

.0015

pf

pf

pf

pf

pf

pf

pf

pf

pf

pf

pf
pf

pf
pf

μf

Disc

(continued)

Description

PTM

Cer.
Cer.
Cer.

Cer.

Cer.
Cer.
Cer.

Cer.

Cer.
Cer.
Cer.
Cer.
Cer.

Cer.

Mica
Mica
Mica

Type

Var.

Var.

Var.

Var.

Var.

Var.
Var.

Var.

600

500

500
500
500
500

500

500

500

500

500

S/N

Range

v

v

v
v
v
v

v
v
v
v
v

matched

1

10%

10%
10%

10%

10%

5%

5%

within

%

of

each

other

C409K

C409L

C410

†

C440

†

C456t

C469

†

C470

†

C478

†

C480

†

C491

†

C601

C602A,B

C623

C633

C635

C642

C644

C645

C652

C671

C685

C686

C722

C751

C757A,B
C765A,B

†

†

Use

285-510
285-519

281-010
281-010

285-543

281-027

281-005
281-005

281-005
281-534

285-612

*290-092

285-510

285-510

283-057

*290-091

290-025

290-025

*290-043

285-510

290-025

290-025

*290-042

285-511

*290-037

*290-037

.01

.047

4.5-25

4.5-25

.0022

.7-3

1.5-7

1.5-7

1.5-7

3.3

1.5

10

x

.01
.01

.1

μf

4000

6.25

6.25

2

x

.01

6.25

6.25

2

x

.01

2

x

20

2

x

20

μf

μf

40

μf

40

μf

μf

μf

pf

pf

μf

pf

pf

pf

pf

pf

μf

80

μf

μf

μf

μf

μf

μf

μf

μf

μf

μf

Disc

MT

MT

Cer.

Cer.

MT

Tub.

Cer.

Cer.

Cer.

Cer.

PMC
EMC

MT

MT

Type

EMC

EMT

EMT

EMC

MT

EMT

EMT

EMC

PTM

EMC

EMC

Var.

Var.

Var.

Var.
Var.

Var.

400
400

400

500

236

450

400
400
200

300
300
450

400

300

300

450

600

450
450

15v

v
v

v

±.25

v

v
v
v
v
v

v
v
v
v
v

v

v

v
v
v

pf

X20686-up

†

There

6-22

are

two

parts

of

this

description

in

your

instrument,

one

in

each

of

the

Vertical

Amplifiers.

Parts

List

—

Type

502A

Ckt.

C800

C805

C807
C808
C820

C822
C824

C828
C830

C833

C836

C838

C839

C841

C847

C850

C851

C866
C867
C868

Capacitors

No.

Tektronix

Part

Number

285-501

285-510
283-538

use

283-022

285-519

283-034

use

285-510

283-034
283-034
283-006

283-034
285-526
283-034

283-001

use

283-057

283-034

283-034

use

283-082

use

283-082

use

283-082

.001

.01

.003

.02

.047

.005

.01

.005

.005

.02

.005

.1

.005
.005

.1

.005

.005

.01
.01
.01

μf

μf

μf

μf

μf

μf

μf

μf

μf

μf

μf

μf

μf

μf

μf

μf

μf
μf
μf

μf

Disc

Disc

Disc

Disc
Disc

Disc

Disc
Disc
Disc

Disc
Disc
Disc
Disc
Disc

(continued)

Description

MT
MT

Mica

Type

MT

Type

MT

Type

Type

Type

Type

MT

Type
Type

Type

Type

Type
Type

Type

Type

600

400

500

1400v

400

4000

400

4000

4000

600

4000

400

4000

500

200

4000

4000

4000

4000
4000

S/N

Range

v
v
v

v

v
v
v
v
v

v
v
v
v
v

v
v
v
v
v

10%

C869

C871

C876

D

1

24

D

1

24

D126

D

1

26

D131

D642A

D642B

F601

Resistors

4000

use

283-082

283-518

283-518

.01

330

330

μf

pf

pf

Disc

Type

Mica
Mica

500
500

v

v
v

10%
10%

Diodes

*152-061

*152-107

*152-061

*152-107

152-008

*152-047

*152-047

Silicon
Silicon
Silicon
Silicon

Germanium

Silicon

Silicon

Tek

Spec

Replaceable

Tek

Spec

Replaceable

Replaceable
Replaceable

by

by

by
by

1N647

1N647

T12G

1N2862

1N2862

20000-22539

22540-up

20000-22539

22540-up

Fuses

117

v

117

234

234

oper.

60

cycle

50

60

50

cycle

cycle

cycle

v

oper.

v

oper.

v

oper.

4

Amp

3AG

159-017
159-026

159-021

159-003

3.2

2

1.6

Amp

Amp

Amp

3AG

3AG

3AG

Fast-Bio

Fast-Bio

Slo-Blo

Slo-Blo

Resistors

are

fixed,

composition,

±10%

unless

otherwise

indicated.

R10

R

11

R13

R15

R17t

t

Ganged

with

SW17.

302-105

302-474

302-224

302-105

311-034

Furnished

1

meg

470

k

220

k

1

meg

500

k

as

a

unit.

'/

2

w

'/

2

w

'/

2

w

y

2

w

2w

TRIGGERING

LEVEL

6-23

Parts

List

—

Type

502A

Ckt.

R18

R21

R23

R24

R26

R27

R29
R32
R33
R36

R39
R42

R44

R47

R48

R51

R

111

R114

R116

R121

R122

Resistors

Tektronix

No.

Part

use

Number

302-124

302-101

304-473

311

-005

302-333

302-101

301-204

302-275

302-101

306-223

309-126

302-101

309-056

301-302

302-681

302-392

311

-032

302-104

302-394

316-103

301-274

120

100

47

500

33

100

200

2.7

100

22

400

100

390

3

680

3.9

250

100

390

10

270

k

Ω

k

Ω

k

Ω

k

meg

Ω

k

k

Ω

k

k

Ω

k

k

k

k

k

k

(continued)

Description

½W
½W

1 W

2 W

½W

½W

½W
½W
½W

2

w

½W

½W
½W

½W

½W

½W

2 W

½W

½W

½W

½W

Var.

Var.

Prec.

Prec.

TRIG.

LEVEL

5%

1%

1%

5%

STABILITY

5%

CENT.

ADJUST

S/N

Range

X21070-up

R123

R124

R125
R126

R127

R128

R131

R134

R136
R137

R137

R141

R143

R144

R144

R146
R147
R148

R160A

R160B

R160C

R160D

R160E

R160F

R160G

R160T

R160V

R161

302-183
302-683

302-154

use

302-334
302-153

302-184

302-472
301-393

303-224

302-101

302-473
309-040

309-176

324-309

324-323

302-101

302-222
302-184

309-014
309-023

309-087

309-095

309-095

310-061

310-061

†

302-822

311-108

302-101

18

68

150

330

15

180

4.7

39

220

100

47

56.5

43.4

16.2

22.6

100

2.2

180

1

2

5

10

10

15

15

8.2

20

100

k
k

k

k

k

meg

meg
meg

meg

meg

meg

meg

k

k

k

k

k

k

Ω

k

k

k

k

Ω

k

k

k

Ω

½W

½W
½W

½W

½W

½W

½W

½W

1 W

½W
½W
½W

½W

1 W

1 W

½W
½W
½W

½W

½W

½W

½W

½W

1 W
1 W

½W

½W

Var.

Prec.

Prec.
Prec.

Prec.

Prec.
Prec.
Prec.
Prec.

Prec.

Prec.

Prec.

WW

5%
5%

1%

1%

1%

1%

1%

1%
1%
1%
1%

2%

2%

VARIABLE

(Ti

20000-21069

21070-up

20000-22539

22540-up

me/CM)

†

Concentric

6-24

with

SW160V.

Furnished

as

a

unit.

Parts

List

—

Type

502A

Ckt.

R166

R1

67

R168

R1

69

R174

R1

76

R178

R180A

R180B

R181

R183

R185

R186

R311

R312

R314

R315

R317
R320

R321

No.

Tektronix

Part

Number

306-154

302-155

302-473

302-101

306-273

311-016

304-183

302-474

302-475

301-825

302-101

302-473
301-393

309-144

309-110

309-051

302-101

302-104

309-014

302-101

Resistors

150

k

1.5

meg

47

k

100

Ω

27

k

10k

18k

470

k

4.7

meg

8.2

meg

100

47
39

975

800

200

100

100

1

100

Ω

k
k

Ω

k

meg

Ω

k

k

k

½W

(continued)

Description

2 W

½W

½W

½W

2 W

2 W

1 W

½W

½W

½W

½W

½W

½W

½W

½W

½W

½W

½W
½W

Var.

Prec.
Prec.

Prec.

Prec.

SWP.

LENGTH

5%

5%

1%

1%

1%

1%

S/N

Range

R324

R331A

R331C

R331E

R331G

R331J

R331M

R331N

R334

R336

R337

R338

R341

R343

R344

R351

R354

R356
R357
R358

R360

R361

R364

R365

R368

301-564

309-090

309-228
309-229

309-230

309-231

302-104
302-104
309-234

310-065

311-045
310-086

311-032

302-474

302-392

302-101

301-564
309-129
311-018
309-129

301-304

302-101 100

308-105

305-823

311-011

560

50

12.5

5.55

2.63

16.69

100
100

154

56.5

15

50

250

470

3.9

100

560

34

20
34

300

30
82

5k

MAG.

EXT.

IX

20X

5%

1%
1%
1%

1%

1%

1%
1%

1%

HORIZ.

5%

1%

CAL.

1%

5%

5%
5%

CAL.

REGIS.

BAL.

DC

k

k

k
k
k

k

k

k
k

k

k

k

k
k

k

Ω

k

k
k
k

k

Ω

k

k

½W

½W
½W
½W

½W

½W

½W

½W
½W

1 W

2 W

1 W

2 W

½W

½W

½W

½W
½W

2 W

½W

½W

½W

8

2 W

2 W

Prec.

Prec.

Prec.
Prec.

Prec.

Prec.
Prec.

Var.

Var.

Var.

W

Var.

Prec.

Prec.

Prec.

WW

R370

R371

R374

R376

R381

301

-304

302-101

308-105

305-823

309-052

300

100

30
82

220

k

Ω

k

k

k

½W

½W

8

2

½W

W

W

WW

Prec.

5%

5%

5%

1%

6-25

Parts

List

—

Type

502A

Ckt.

R383
R385

R386

R391

R393

R395

R396

R398

R406C

R406E

R406J

R406L

R407C

R407E

R407.

R407L

R408A

R408B

R408C

R408D

No.

†

†
†

†

J

†

†

†

Resistors

Tektronix

Part

†

†

†

†

†

Number

301-204

302-223

302-223

309-052

301-204

302-223
302-223

311-416

309-111

309-046

309-013
309-034

309-111

309-046

309-013

309-034
309-243
309-090

309-231

309-229

200

k

22

k

22

k

220

k

200

k

22

k

22

k

2

x50

k

900

k

111

k

990

k

10.1

k

900

k

111

k

990

k

10.1

k

193

k

50

k

16.69

k

5.55

k

(continued)

Description

½W
½W

½W

½W

½W

¼W

½W

½W

½W

½W

½W

½W
½W

½W

½W
½W
½W
½W

½W

Var.

Prec.

Prec.

Prec.

Prec.

Prec.

Prec.

Prec.

Prec.

Prec.

Prec.

Prec.
Prec.

Prec.

5%

1%

5%

POSITION

1%

1%

1%

1%

1%

1%

1%

1%

1%

1%

1%

1%

S/N

Rarje

R408E

R408F

R408G

R408H

R408

R408K

R408L

R409B

R409C
R409D

R409E

R409F

R409G

R409H

R409J

R410

R411

R413
R414
R417

R418

R422

R423

R424

R425

R427

J

†

†
†

†

†

†

†††

†
†
†
†

†

†

†

†

†

†

†

†

†
†

†

†

†

†

†

Use

309-230

309-241

309-203
309-178

309-240

309-128

309-177

316-123
315-103
316-392

315-272

315-222

316-152
315-102

315-331

*312-583

302-102

301-564

309-049
301-273

301-472
316-105
301-913
311-347

301-913

309-432

††

2.63

1.28

505.4

25

0

125

50

Ω

25

Ω

12

10

3.9

2.7

2.2

1.5

1

k

33

0

1

meg

1

k

560

150

27

4.7

1

meg

91

100

91

82.5

k
k

Ω

Ω

Ω

k

k

k

k

k

k

Ω

k

k

k

k

k

k

k

k

½W
½W

½W

½W
½W

½W

½W
¼W

¼W

¼W

¼W
¼W
¼W
¼W
¼W

½W

½W

½W
½W

½W

½W

¼W
½W

.2 W

½W
½W

Var.

Prec.
Prec.

Prec.

Prec.
Prec.

Prec.

Prec.

Prec.

Prec.

Prec.

.2

V/CM

1%
1%

1%

1%
1%

1%

1%

5%

5%

5%

5%

5%

1%

5%

1%

5%

5%

5%

5%

1%

DIFF.

BAL.

X21070-up

†

There

††

†††

6-26

R410

Selected

are

and

two

R440

part;

parts

may

are

of

a

not

this

description

matched

appear

in

pair.

in

Furnished

your

your

instrument.

instrument;

as

a

unit.

one

in

each

of

the

Vertical

Amplifiers,

Parts

List

—

Type

502A

Ckt.

R428

R429

R433
R434
R435

R440

R441

R443

R444
R447

R448
R450

R451
R452
R453

R454

R455

R456

R457

R458

Resistors

No.

†

†

†
†
†

†

†

†
†
†

†
†
†
†
†

†
†

†

†

†

Tektronix

Part

Number

309-432

311-017

311-243

301-272

311-125

*312-583

302-102

301

-564

309-049

301-273

301-472
306-473
302-102

309-414

306-153

301-303

311-067

311-084
301-223
301-223

††

82.5

10

50

2.7

50

1
1

560

150

27

4.7

47

1

5

15k

30

5

1

22

22

meg

k

k

meg

k

k

k

k

k

k

k

k

k

k

k

k

k

k

k

(continued)

Description

½W

.1

W

½W

.2 W

½W

½W
½W
½W

½W

½W

2 W

½W
½W

2

W

½W

.2 W

.2 W

½W
½W

Var.
Var.

Var.

Var.
Var.

Prec.

Prec.

Prec.

Prec.

1%

VAR.

DC

DC

BAL.

5%

.2

MV/CM

1%

5%

1%

5%

5%

1%

5%

FEEDBACK

.2

MV/CM

5%
5%

BAL.

BAL.

GAIN

DIFF.

S/N

BAL.

Range

R461

R462

R464
R465

R466

R467
R468

R469

R470

R471

R472
R473

R474

R475

R476

R478

R479

R480

R481
R482

R483
R484

R48

R486
R487

5†

†

†
†

†

†

†
†
†
†

†

†
†
†
†
†

†
†

†

†

†

†
†

†
†

Use

Use

Use

Use

302-102
309-414

301-303

301-565

311-028

301-565
302-103

302-103

309-195
302-102

304-223

302-102
305-273

306-333
306-273

302-472

302-472

309-195
302-102
304-223

302-102
305-273

306-333
306-273

311-399

1

5

30

5.6

2

5.6

10

10

90

1

22

1

27

33

27

4.7

4.7

90

1

22

1

27
33

27

7k

k

meg

x

k

k

k

k

k

k

k
k

k

k

k

k

k

k

k

k
k

meg

100

meg

k
k

½W

½W
½W

k

½W

2 W

½W
½W
½W
½W
½W

1

½W

2

2

2

½W
½W

½W
½W

1

½W

2

2

2

Var.

W

W

W

W

W

W

W
W

Var.

Prec.

Prec.

Prec.

1%

5%
5%

POSITION

5%

1%

5%

1%

5%

VARIABLE

(Sensitivity)

††

†

There

R41

are

two

parts

of

this

description

0

and

R440

are

a

matched

pair.

in

Furnished

your

instrument;

as

one

in

each

of

the

Vertical

Amplifiers,

a

unit.

6-27

Parts

List

—

Type

502A

Ckt.

R488

R489
R490

R491

R492

R494t

R495
R499
R601

R602

R603
R604
R618

R619

R621

R622

R623

R630

R631

R632

Resistors

No.

†

†

†

†
†

††

Tektronix

Part

Number

311-120
311-067
302-683
309-086

309-021

302-224

311-125
304-473
311-057

302-101

302-101

308-142

302-102
302-105

310-054

311-015
310-086
302-333
302-105
302-102

2.5

k

5

k

68

k

3.5

meg

1.84

meg

220

k

50

k

47

k

50

Ω

100

Ω

100

Ω

30

Ω

1

k

1

meg

68

k

10

k

50

k

33

k

1

meg

1

k

(continued)

Description

.2W

.2W

½W

½W

½W

½W

.2W

1 W

½W

½W

3

W

½W

½W

1 W

1 W

½W

½W

½W

Var.
Var.

Var.

Var.

Var.

Prec.
Prec.

WW

ww

Prec.

WW

Prec.

GAIN

.2

V/CM

ADJ.

DC

SCALE

-150

1%

1%

TRIG.

5%

1%

VOLTS

1%

GAIN

FOR

I

LLUM.

HORIZ.

S/N

Range

MODE

R633
R635

R636

R637
R639

R642
R643
R644

R645

R646

R647

R648

R649

R650

R651

R659

R660

R661

R662
R665

R666

R668

R669

R671

R673

302-105
302-183

302-105
308-040

302-333

302-104
302-104

302-101

302-101

306-150

306-150
309-030
310-068

302-470
302-470

302-102
302-473

302-473

302-185

306-273

302-105

302-102

302-105

310-088

310-055

1

meg

18k

1

meg

1.5

k

33

k

100

k

100

k

100

Ω

100

Ω

15

Ω

15

Ω

1.8

k

42.226

47

Ω

47

Ω

1

k

47

k

47

k

1.8

meg

27

k

1

meg

1

k

1

meg

143

k

220

k

½W

½W

½W

25 W

½W

½W
½W

½W
½W

2 W

2 W

½W

k

1 W

½W

½W

½W

½W
½W

½W

2 W

½W

½W

½W

1 W

W

WW

Prec.
Prec.

Prec.

Prec.

5%

1%
1%

1%

1%

†

There

††

Ganged

6-28

are

two

parts

of

this

with

SW601.

Furnished

description

in

your

instrument;

as

a

unit.

one

in

each

of

the

Vertical

Amplifiers,

Parts

List

—

Type

502A

Ckt.

R685

R686

R722
R739

R740

R741

R742

R745

R746

R747

R748
R749

R751

R753
R756

R757

R765

R766

R800

R805

Resistors

Tektronix

No.

Part

Number

302-101

302-101

302-104

302

102

302-273

302-474

304-274

304-563

302-225

302-102

302-102

302-225

310-094

309-151

302-102

308-064

302-101 100
302-101 100

306-563

302-333

100
100

100

1

27

470

270

56

2.2

1

1

2.2

400

174

1

2.25

56

33

Ω

Ω

k

k

k

k

k

k

meg

k

k

meg

k

k

k

k

Ω
Ω

k

k

(continued)

Description

½W
½W

½W

½W
½W

½W

1 W

1 W

½W

½W

½W

½W

1 W

½W
½W

20 W

½W
½W

2 W

½W

Prec.

Prec.

WW

S/N

1
1

5%

%

%

R806
R808

R809
R820

R824

R825

R826
R827

R828
R829

R830

R831

R832

R833

R834

R836
R837

R838
R839
R840

R841

R842

R843
R844
R845

302-392

306-122
302-474

302-102
316-472

306-225

311

-039

306-275

306-335

306-335

306-395

311-254
311-254

311

-026

316-472

306-395
302-103
302-103
302-105

311-026

311-026

311-023
304-273

311

-026

304-273

3.9

1.2

470

1

4.7

2.2

1

2.7

3.3

3.3

3.9

5

5

100

4.7

3.9

10k
10k

1

100

100

50
27

100

27

k

meg

meg

meg

meg

k

k

k

k
k

k

k

meg

meg

meg

meg

meg

k

k

meg

k

k

k

½W

2 W

½W

½W
¼W

2

2

2
2
2

2

.2

.2

2

¼W

2

½W
½W
½W

2

2
2

1W

2

1

W
W
W
W
W

W
W
W
W

W

W

W
W

W
W

Var.

Var.
Var.

Var.

Var.

Var.

Var.

Var.

HIGH

FOCUS

FOCUS

HORIZ.

ASTIG.

GEOM.

HORIZ.

ASTIG.

VOLTAGE

Lower

Upper

SENS.

LOWER

BEAM

UPPER

Beam

Beam

BAL.

REGIS.

R846

R847
R852

R853

R854

302-155

302-225

306-825
306-825
306-825

1.5

2.2

8.2

8.2

8.2

meg

meg

meg

meg

meg

½W

½W

2
2
2

W
W
W

6-29

Parts

List

—

Type

502A

Ckt.

R858

R859

R860

R861

R862

R863

R864

R865

R866

R868

R870

R871

R872
R874

R875

R876

R878
R879

R880

R883

R884

R885

R886

Resistors

Tektronix

No.

Part

Number

306-156

306-156
311-397

304-105

311-397

302-226

302-563

302-226

302-105
302-105

302-154

302-335

302-102
302-683

302-225

302-102

302-473

311-016

304-333

302-101

309-237
310-066

309-030

15

meg

15

meg

2

meg

1

meg

2

meg

22

meg

56

k

22

meg

1

meg

1

meg

150

k

3.3

meg

1

k

68

k

2.2

meg

1

k

47

k

10k

33

k

100 Ω

204

Ω

18

k

1.8

k

(continued)

Description

2

W

2

W

1

W

½W

½W

½W

½W
½W
½W
½W

½W
½W
½W
½W
½W

2

W

1

W

1

W

1

W

1

W

½W

Var.

Var.

Var.

Prec.
Prec.
Prec.

INTENSITY

INTENSITY

CAL.

AMPL.

1%
1%
1%

BAL.

S/N

Range

R887

R888

R889

R890

R899

SW10

SW17

†

SW20

SW126
SW160

SW160V

SW331

SW403A

SW403B

SW407

SW478

SW489

SW601

SW870

TK601

†

Ganged

†

Concentric

††

There

††

Ganged

††

††

†††

Use

†

††

††

are

Unwired

260-233
260-235

260-447

260-501

260-529

311-108

260-236

260-238

260-238

260-525

260-247

260-237

311-057

260-234

260-208

with

with

two

with

R17.

R160V.

parts

309-235

309-236

309-238

309-096

*308-090

Wired

*262-177

*262-178

*262-556

*262-172

*262-179

*262-190
*262-555

*262-180

*262-176

Furnished

R601.

Furnished

of

this

Furnished

as

a

as

description

as

9k

900

90

10

.25

unit.

a

Ω

Ω

Ω

a

Ω

Rotary

Rotary

Slide

Lever

Rotary

Rotary
Rotary

Rotary
Rotary

Push-button

Rotary

Rotary

Thermal

unit.

in

your

unit.

Cutout

instrument;

½W
½W
½W
½W

1

W

Switches

133°

one

TRIGGER

TRIGGERING

TRIGGER

MODE

TIME/CM

HORIZONTAL

INPUT
INPUT

SENSITIVITY

FINDER

HORIZ.

POWER

AMPLITUDE

F

±

in

each

5°

SELECTOR

SELECTOR

SELECTOR

SELECTOR

(Trace)

DEFL.

OFF

F

of

the

LEVEL

DISPLAY

(Upper)

(Lower)

PLATE

CALIBRATOR

Vertical

Prec.
Prec.
Prec.
Prec.

WW

(Slope)

SELECTOR

Amplifiers,

1%
1%
1%
1%

6-30

@3

Transformers

Parts

List

—

Type

502A

Ckt.

T602

T801

Q

1

Q634

Q644

Q647

V24

V45

V

1

V

1

45

V

1

35

52

24

Tektronix

No.

Part

Number

*120-117

*120-150

S/N

Description

L.

V.

Power

H.

V.

Power

Range

Transistors

151

Use

151-004

151-004

151-137

154-187

154-187
154-078

154-078

154-016

-093

2N2043

2N214
2N214

2N2148

6DJ8/ECC88
6DJ8/ECC88

6AN8

6AN8

6AL5

Electron

Tubes

V

1

V

1

V324

V354

V364

V414

V444

V454

V464
V474

V484

V493

V602

V636

V637

V639

V652
V666
V677
V722

V746
V747

V757
V800

V814

61

83

154-078
154-187

154-022

154-022

154-187

†

†

†
†
†

†

†

*157-073

154-022

154-022

154-039

154-039

154-022

154-168

154-078
154-044

154-052

154-119

154-078
154-044
154-168

154-078

154-044

154-044

154-302

154-041

††

6AN8

6DJ8/ECC88

6AU6

6AU6

6DJ8/ECC88

6AU6
6AU6

6AU6

12AT7

12AT7

6AU6

5AR4/GZ34

6AN8

12B4

5651

6BW4

6AN8

12B4

5AR4/GZ34

6AN8

12B4
12B4

6DT5

12AU7

†

There

††

V414

are

two

parts

of

this

description

and

V444

furnished

as

a

unit.

in

your

instrument;

one

in

each

of

the

Vertical

Amplifiers.

6-31

Parts

List

—

Type

502A

Ckt.

V822

V832

V859

V862

V873

V875

Electron

Tektronix

No.

Part

Number

154-051

154-051

*154-246

154-051

154-078

154-022

5642

5642

T5021-2

5642

6AN8

6AU6

CRT

Standard

Tubes

Description

Phosphor

(continued)

S/N

Range

6-32

TYPE

502A

OSCILLOSCOPE

A

A

BLOCK

DIAGRAM

MRH

Z6>3.

+

TYPE

502A

OSCILLOSCOPE)

A

CIRCUIT

NUMBERS

1

THRU

59

I-I

xj

263

A

TIME-BASE

TR

IGGER

^ENT

R

WITH

Rll

^ING

LEVEL

>0

AUTOMATIC

KIHG

CONTROL

■At>E

TRIG.

-15OV

k-

1

PJ

41

DlAG)

as

K.

HOLD-OFF

CIRCUIT

-I5OV

___________________

WAVEFORMS

WERE

HORIZONTAL

TRIGGER

TIME/CM

TRIGGERING

j

“

FOR

FOR

FOR

MODE

TIME-BASE

4

OBTAINED

WAVEFORMS

LOWER VOLTAGE

UPPER

SWITCH

VOLTAGE

WITH

DISPLAY

SELECTOR

• •

•.

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

LEVEL

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

VOLTAGE

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

rciRCuTT

1

I

00

2

READINGS

CONTROLS

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

THRU

BETAS

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

READINGS

READINGS

GENERATOR

NUMBERS

I

89

NORMAL

-

EXT.,

I

RECURRENT

- -

RECURRENT

•

FULL

(MOT

NOR.MAL

|

|

FOLLOWS:

DC

MILLISEC

LEFT

AUTO)

TI

RESI

M

5TORS

I

NG

TIMING

CAPACITORS

TYPE

502

A

OSCILLOSCOPE

TIM

ING

CAPACITORS

SWI6O

HOLD-OFF

4

RESISTORS

CAPACITORS

o

A

TIMING

SWITCH

job

SWEEP

FROM

CATH,

RUNUP

(TIME-BASE

WAVEFORM

PIN

CF

GEN.

3,

VI6IB

...

»

.........—

DI

AG.)

R3H

97SK

'■

11

VOLTAGE

WITH

READINGS

CONTROLS

HORIZONTAL

TRIGGER

TRIGGERING

HORIZONTAL

FOR

FOR

LOWER

UPPER

SET

DISPLAY

SELECTOR

LEVEL

POSITIONS

VOLTAGE

VOLTAGE

were

AS

obtained

FOLLOWS:

READINGS

READINGS

NORMAL

—

EXT.,

FULL

BUT

NOT

TO

AUTOMATIC

FULL

FULL

LEFT

RIGHT

LEFT

DC

SWITCHED

TYPE

502A

OSCILLOSCOPE

^1*

INPUT

AMPLIFIER

OUTPUT

AMPLIFIER

CIR.CUIT

A!

300

THR.U

NUMSER.5

399

ZG3

joe

L

______________________

P

TYPE.

5O2A

CHANNEL

ATTENUATOR

OSCILLOSCOPE

A

_____________________

L

J

J

______________________

r

CHANNEL

ATTENUATOR

E>

A

CMO

363

VERTICAL

A

ATTENUATOR

SWITCH