Tektronix 5a15n User manual

INSTRUCTION

|

MIARNIUAL

|

Serial

Number

|

Tektronix,

Inc.

@

P.

O.

Box

500

@

Beaverton,

Oregon

97005

@

Phone

644-0161

@

Cables:

Tektronix

070-1136-00

871

7

be

reproduced

in

any

form

without

permission

of

the

Copyright

©

1971

by

Tektronix,

Inc.,

Beaverton,

|

_

Oregon.

Printed

in

the

United

States

of

America.

All

-

rights

reserved.

Contents

of

this

publication

may

not

copyright

owne

My

i

f

5AT5N

vaone

TABLE

OF

CONTENTS

|

Page

SECTION

1

SPECIFICATION

SECTION

4

CALIBRATION

(cont)

Introduction

1-1

Services

Available

4-1

Table

1-1,

Electrical

Characteristics

|

Test

Equipment

Required

4-1

Calibration

Equipment

Alternatives

4-2

|

Special

Calibration

Fixtures

4-2

SECTION

2

OPERATING

INSTRUCTIONS

|

Test

Instruments

4-2

Introduction

2-1

Accessories

+2

Plug-In

Insertion

and

Removal

2-1

Short-Form

Procedure.and

Index

4-2

Controls

and

Connectors

2-1

Calibration

Procedure

|

4-2

Basic

Operation

|

2-1

—

Preparation

|

2-1

Step

Attenuator

Balance

2-2

SECTION

5

PARTS

LISTS

AND

DIAGRAMS

Gain

Check

22

Symbols

and

Reference

Designators

5-1

General

Operating

Information

2-2

Parts

List

Abbreviations

5.2

Applying

Signals

a2

Schematic

Diagrams

a

Input

Coupling

2-2

Component

Board

Locations

(

Deflection

Factor

2-3

Electrical

Parts

List

Mechanical

Parts

List

SECTION

3

CIRCUIT

DESCRIPTION

Introduction

3-1

CHANGE

INFORMATION

Plug-In

Logic

3-1

Input

Coupling

3-1

Input

Attenuator

3-1

Amplifier

3-1

Abbreviations

and

symbols

used

in

this

manual

are

based

on

or

taken

directly

from

IEEE

Standard

260

“Standard

Symbols

for

Units’,

MIL-STD-12B

and

other

standards

of

Introduction

4-1

the

electronics

industry.

Change

information,

if

any,

is

SECTION

4

CALIBRATION

Instrument

Maintenance

4-1

located

at

the

rear

of

this

manual.

5A15N

Fig.

1-1.

5415N

Amplifier.

eo

5A15N

SECTION

1

SPECIFICATION

Change

information,

if

any,

affecting

this

section

will

be

found

at

the

rear

of

this

manual.

Introduction

The

5A15N

Amplifier

is

a

general-purpose

amplifier

plug-in

unit

for

use

with

Tektronix

5100-series

oscillo-

scopes.

The

unit

features

solid-state

circuitry

and

simplicity

of

front-panel

controls,

which

include

a

lighted

knob

skirt

to

provide

a

direct

readout

of

calibrated

deflection

factor.

The

5A15N

has

calibrated

deflection

factors

from

one

milli-

volt

per

division

to

five

volts

per

division

and

a

bandwidth

from

DC

to

at

least

two

megahertz.

While

designed

pri-

marily

for

use

as

a

vertical

amplifier,

the

unit

can

be

operated

in

association

with

the

horizontal

deflection

system

of

the

oscilloscope

for

X-Y

displays.

The

following

electrical

characteristics

apply

over

an

ambient

temperature

range

of

OC

to

+50°C.

Refer

to

the

5100-series

Oscilloscope

System

manual

for

environmental

characteristics.

In

this

manual

the

word

Volts/Div

or

division

refers

to

major

graticule

division.

TABLE

1-1

ELECTRICAL

CHARACTERISTICS

Characteristic

Performance

Requirement

Supplemental

Information

Deflection

Factor

Calibrated

Range

1

millivolt/division

to

5

volts/division

12

steps

in

a

1-2-5

sequence

Accuracy

Within

2%

Step

Attenuator

Balance

Adjustable

for

one

division

or

less

trace

movement

as

VOLTS/DIV

is

rotated

throughout

its

range.

Uncalibrated

(Var)

Range

At

least

2.5:1.

Frequency

Response

Bandwidth

(8

Div

Reference)

DC

(Direct)

Coupled

DC

to

at

least

2

megahertz.

AC

(Capacitive)

Coupled

2

hertz

or

less

to

at

least

2

megahertz.

Step

Response

(Displayed)

Aberrations

+2%

of

pulse

amplitude.

Inputs

Resistance

1

megohm,

within

1%.

Capacitance

~47

picofarads

Time

constant

normalized

for

47

micro-

seconds,

within

3%.

Maximum

Safe

Input

Voltages

DC

(Direct)

Coupled

350

V

(DC

+

Peak

AC)

AC

(Capacitive)

Coupled

350

VDC

|

POSITION

Range

At

least

+

and

—10

divisions

fr6m

grati-

cule

center.

1-1

5AI5N

SECTION

2

OPERATING

INSTRUCTIONS

Change

information,

if

any,

affecting

this

section

will

be

found

at

the

rear

of

this

manual.

Introduction

The

5A15N

Amplifier

Plug-in

operates

with

a

Tektronix

5100-series

oscilloscope.

An

understanding

of

the

5A15N

Operation

and

capabilities

is

essential

for

obtaining

best

results.

This

section

of

the

manual

gives

a

brief

functional

description

of

the

front-panel

controls

and

connectors,

a

familiarization

procedure,

and

general

operating

informa-

tion.

PLUG-IN

INSERTION

AND

REMOVAL

The

5A15N

is

calibrated

and

ready

for

use

as

it is

received.

It

can

be

installed

in

any

compartment

of

the

9100-series

oscilloscope,

but

it is

intended

for

principal

use

in

vertical

compartments

(the

center

and

left

compart-

ments).

For

X-Y

operation,

the

5415N

may

also

be

installed

in

the

horizontal

(right)

compartment

(refer

to

the

5100N

Oscilloscope

System

Instruction

Manual

for

infor-

mation

on

X-Y

operation).

NOTE

If

the

oscilloscope

system

receives

no

DISPLAY

ON

logic

levels

from

the

vertical

plug-ins,

it

is

designed

to

display

the

unit

in

the

left

compartment.

To

install,

align

the

upper

and

lower

rails

of

the

5415N

with

the

plug-in

compartment

tracks

and

fully

insert

it

(the

plug-in

panel

must

be

flush

with

the

oscilloscope

panel).

To

remove,

pull

the

release

latch

to

disengage

the

5A15N

from

the

oscilloscope.

CONTROLS

AND

CONNECTORS

This

is

a

brief

description

of

the

function

or

operation

of

the

front-panel

controls

and

connectors.

More

detailed

information

is

given

under

General

Operating

Information.

DISPLAY

ON

Applies

and

removes

logic

levels

to

the

oscilloscope

system

to

enable

or

disable

plug-in

operation.

The

switch

functions

only

when

the

plug-in

is

operated

in

one

of

the

vertical

plug-in

compartments.

POSITION

Positions

display.

®

VOLTS/DIV

Volts

per

major

graticule

division.

Selects

calibrated

deflection

factors

from

1

mV/Div

to

5

V/Div:

12

steps

in

a

1-2-5

sequence.

Knob

skirt

is

illuminated

to

indicate

de-

flection

factor.

Variable

Volts/Div

Provides

uncalibrated,

continuously

variable

deflection

factor

between

calibrated

steps;

extends

range

to

12.5

V/Div.

Balances

the

input

amplifier

for

minimum

trace

shift

throughout

the

VOLTS/DIV

gain-switching

range.

STEP

ATTEN

BAL

AC-DC:

Button

pushed

in

selects

Capacitive

coupling

of

input

signal;

button

out

selects

direct

coupling

of

input

signal.

Input

Coupling

Pushbuttons

GND:

Disconnects

the

input

signal

and

provides

ground

reference

to

the

amplifier

input

stage.

PRE

CHG:

Both

AC-DC

and

GND

buttons

pushed

in

allows

pre-

charging

of

the

coupling

capaci-

tor.

Release

GND

for

measure-

ment.

Input

Connector

BNC

connector

for

application

of

external

voltage.

signals.

Includes

a

coded-probe

input

ring

for

activa-

tion

of

X10

readout.

BASIC

OPERATION

Preparation

The

first

few

steps

of

the

following

procedure

are

intended

to

help

quickly

obtain

a

trace

on

the

screen

and

prepare

the

instrument

for

immediate

use.

The

remainder

of

the

steps

demonstrate

some

of

the

basic

functions

of

the

SAISN.

Operation

of

other

instruments

in

the

system

is

described

in

the

instruction

manuals

for

those

units.

1.

Insert

the

unit

all

the

way

into

the

oscilloscope

system

plug-in

compartment.

2.

Turn

the

oscilloscope

Intensity

control

fully

counter-

clockwise

and

turn

the

oscilloscope

system

Power

ON.

Pre-

2-1

Operating

Instructions—5A15N

set

the

time-base

and

triggering

controls

for

a

2-millisecond/

division

sweep

rate

and

automatic

triggering.

3.

Set the

5A15N

front-panel

controls

as

follows:

DISPLAY

ON

(deflection

factor

illuminated)

POSITION

Midrange

VOLTS/DIV

.1

V

Calibrated

STEP

ATTEN

BAL

Midrange

Input

Coupling

DC,

GND

4.

Adjust

the

Intensity

control

for

normal

viewing

of

the

trace.

The

trace

should

appear

near

the

graticule

center.

5,

Move

the

trace

two

divisions

below

the

graticule

centerline

with

the

POSITION

control.

6.

Apply

a

400-millivolt

peak-to-peak

signal

(available

at

the

oscilloscope

Calibrator

loop)

through

a

test

lead

or

1X

probe

to

the

input

connector.

7.

Release

the

GND

pushbutton.

The

display

should

be

square

waves

four

divisions

in

amplitude,

with

the

bottom

of

the

display

at

the

reference

established

in

step

5.

Rotate

the

Variable

control

throughout

its

range,

observing

a

reduction

of

the

display

amplitude.

Return

the

Variable

contro!

to

the

CAL

detent

(calibrated

Volts/Div)

position.

8.

To

demonstrate

AC-coupled

operation,

re-position.

the

display

with

the

POSITION

control

to

place

the

bottom

of

the

display

at

the

graticule

centerline.

9.

Push

in

the

AC

button

and

note

that

the

display

shifts

downward

about

two

divisions

to

its

average

level.

Step

Attenuator

Balance

If

the

STEP

ATTEN

BAL

control

is

not

properly

adjusted,

the

CRT

zero

reference

point

(trace

or

spot)

will

shift

vertically

due

to

differential

DC

imbalance

in

the

amplifier

as

the

VOLTS/DIV

switch

is

rotated

throughout

its

range.

The

shift

is

more

noticeable

on

the

most

sensitive

positions.

a.

With

the

instrument

operating,

ground

the

input

(GND

button

pushed

in)

and

set

the

VOLTS/DIV

switch

to

5

V.

Move

the

trace

to

the

graticule

center

with

the

POSI-

TION

control.

:

b.

Rotate

the

VOLTS/DIV

switch

throughout

its

range

and

adjust

the

STEP

ATTEN

BAL

control

for

minimum

trace

shift.

2-2

Gain

Check

The

vertical

and

horizontal

deflection

systems

of

the

5100N-series

oscilloscopes

are

gain-standardized

to

permit

a

plug-in

to

be

moved

from

one

oscilloscope

to

another

(or

from

one

compartment

to

another

within

the

oscilloscope)

without

the

need

to

recheck

the

calibration

each

time.

However,

the

5A15N

gain

can

be

checked

and,

if

necessary,

adjusted.

This

completes

the

basic

operating

procedure

for

the

5AI5N.

Instrument

operations

not

explained

here

or

those

that

need

further

explanation

are

discussed

under

General

Operating

Information.

GENERAL

OPERATING

INFORMATION

Applying

Signals

When

measuring

DC

voltage,

use

the

largest

deflection

factor

(5

V/Div)

when

first

connecting

the

5A15N

to

an

unknown

voltage

source.

If

the

deflection

is

too

small

to

make

the

measurement,

switch

to

a

lower

deflection

factor.

In

general,

probes

offer

the

most

convenient

method

of

connecting

a

signal

to

the

input

of

the

5A15N.

Tektronix

probes

are

shielded

to

prevent

pickup

of

electrostatic

inter-

|

ference.

A

10X

attenuator

probe

offers

a

high

input

impedance

and

allows

the

circuit

under

test

to

perform

very

close

to

normal

operating

conditions.

The

5A15N

its

designed

for

compatibility

with

coded

probes,

such

as

the

Tektronix

P6060

and

P6052

Passive

Probes.

The

input

con-

nector

has

an

outer

ring

to

which

the

coding

ring

on

the

probe

connector

makes

contact.

This

type

of

probe

allows

the

vertical

deflection

factor

indicated

by

the

readout

to

correspond

with

the

actual

deflection

factor

at

the

probe

tip,

eliminating

the

need

to

consider

the

attenuation

factor

of

the

probe

when

measuring

the

signal

amplitude

on

the

graticule

scale.

See

your

Tektronix,

Inc.,

catalog

for

charac-

teristics

and

compatibility

of

probes.

for

use

with

this

system.

|

Sometimes

unshielded

test

leads

can

be

used

to

connect

the

5A15N

to

a

signal

source,

particularly

when

a

high-

level,

low-frequency

signal

is

monitored

at

a

low-impedance

point.

However,

when

any

of

these

factors

is

missing,

it

becomes

increasingly

important

to

use

shielded

signal

cables.

In

all

cases,

the

signal-transporting

leads

should

be

kept

as

short

as

practical.

Be

sure

to

establish

a

common

ground

connection

between

the

device

under

test

and

the

5A15N.

The

shield

of

a

coaxial

cable

or

ground

strap

of

a

signal

probe

provides

adequate

common

ground

connec-

tion.

Input

Coupling

The

AC-DC

pushbutton

switch

allows

a

choice

of

input

coupling.

The

type

of

display

desired

will

determine

the

coupling

used.

—_—

ee

—

oe

—

Se

er

DC

coupling

(button

out)

can

be

used

for

most

applica-

tions.

However,

if

the

DC

component

of

the

signal

is

much

_

larger

than

the

AC

component,

AC

coupling

(button

in)

will

probably

provide

a

better

display.

DC

coupling

should

be

used

to

display

AC

signals

below

about

2

hertz

as

they

will

be

attenuated

in

the

AC

position.

In

the

AC

position,

the

DC

component

is

blocked

by

a

capacitor

in

the

input

circuit.

The

low-frequency

response

in

the

AC

position

is

about

2

hertz

(—3

dB

point).

There-

fore,

some

low-frequency

attenuation

can

be

expected

near

this

frequency

limit.

Distortion

will

also

appear

in

square

waves which

have

low-frequency

components.

The

GND

pushbutton

provides

a

ground

reference

at

the

amplifier

input.

The

signal

applied

to

the

input

connector

is

presented

with

a

one-megohm

load,

while

the

amplifier

Input

is

grounded.

This

eliminates

the

need

to

externally

ground

the

input

to

establish

a

DC

ground

reference.

Pre-charging.

To

minimize

surge

currents

in

the

circuit

under

test

when

using

deflection

factors

of

50

mV/Div

through

1

mV/Div

and

a

1X

probe,

use

the

AC-DC

and

GND

pushbuttons

to

take

advantage

of

the

pre-charging

circuit

incorporated

inthe

unit.

The

pre-charging

circuit

permits

charging

the

coupling

capacitor

to

the

DC

source

voltage

when

the

AC

and

GND

buttons

are

pressed

in.

The

procedure

for

using

this

circuit

is

as

follows:

Operating

Instructions—5A15N

a.

Before

connecting

the

5A15N

to

a

signal

containing

a

DC

component,

push

in

the

AC

and

GND

buttons.

Then

connect

the

input

to

the

circuit

under

test.

b.

Wait

about

one

second

for

the

coupling

capacitor

to

charge.

|

c.

Remove

the

ground

from

the

coupling

capacitor

(GND

button

out).

The

display

will

remain

on-screen

and

the

AC

component

can

be

measured

in

the

usual

manner.

Deflection

Factor

The

amount

of

trace

deflection

produced

by

a

signal

is

determined

by

the

signal

amplitude,

the

attenuation

factor

(if

any)

of

the

probe,

the

setting

of

the

VOLTS/DIV

switch,

and

the

setting

of

the

Variable

control.

The

cali-

brated

deflection

factors

are

indicated

by

the

VOLTS/DIV

switch

only

when

the

Variable

control

is

rotated

fully

clockwise

into

the

detent

position.

The

range

of

the

Variable

control

is

at

least

2.5:1.

It.

provides

uncalibrated

deflection

factors

covering

the

full

range

between

the

fixed

settings

of

the

VOLTS/DIV

switch.

The

control

can

be

set

to

extend

the

deflection

factor

to

at

least

12.5

volts/division.

2-3

5A15N

SECTION

3

CIRCUIT

DESCRIPTION

Change

information,

if

any,

affecting

this

section

will

be

found

at

the

rear

of

this

manual.

Introduction

This

section

contains

an

electrical

description

of

the

cir-

cuits

in

the

5A15N

Amplifier

unit.

A

complete

schematic

diagram

is

given

on

a

pullout

page

at

the

back

of

the

manual.

|

Plug-in

Logic

When

the

DISPLAY

ON

button,

S199,

is

pressed,

a

logic

level

is

applied

to

the

electronic

switching

circuit

in

the

oscilloscope

to

enable

plug-in

operation

(this

button

has

no

effect

when

the

plug-in

is

inserted

in

a

horizontal

plug-in

compartment).

Power

is

applied

to

illuminate

the

front-

panel

knob-skirt

readout

lamp,

indicating

the

ON

mode.

Input

Coupling

Signals

applied

to

the

front-panel

input

connector

may

be

capacitive

coupled

(AC),

direct

coupled

(DC),

or

inter-

nally

disconnected

(GND).

Provision

is

made

to

precharge

(or

discharge)

the

input

capacitor

to

protect

delicate

circuitry

under

test.

When

both

the

AC

and

GND

buttons

are

pressed,

the

input

to

the

amplifier

is

grounded

and

input

capacitor

C101

is

precharged

through

R102

to

the

level

of

the

applied

input

signal.

Input

Attenuator

The

deflection

factor

of

the

plug-in

is

set

by

a

combina-

tion

of

gain

switching

in

the

amplifier

and

input

attenua-

tion.

The

input

attenuator

is

a

frequency-compensated

voltage

divider

that

provides

100X

attenuation

in

the

0.1

Vto5

V

positions

of

the

VOLTS/DIV

switch.

At

DC

and

for

low-

frequency

signals,

the

divider

is

essentially

resistive

(attenuation

ratio

determined

by the

resistance

ratio

of

R107

and

R108).

At

higher

frequencies,

the

capacitive

reactance

becomes

effective

and

the

attenuation

ratio

is

determined

by

the

impedance

ratio.

In

addition

to

pro-

viding

constant

100X

attenuation

throughout

the

band-

width

of

the

amplifier,

the

input

attenuator

maintains

a

constant

input

RC

characteristic

(one

megohm

paralleled

by

about

47

pF)

for

0.1

V

to

5

V

settings

of

the

VOLTS/

DIV

switch.

®

Amplifier

The

input

amplifier

consists

of

two

identical

feedback

amplifiers

connected

in

a

paraphase

configuration.

Quies-

cently,

the

two

sides

of

the

amplifier

are

balanced

by

the

STEP

ATTEN

BAL

adjustment

R116

so

there

is

no

current

through

the

gain-setting

resistor

(R123

through

R128).

See

Fig.

3-1

for

a

simplified

diagram.

An

input

signal

is

developed

across

the

gain-setting

resistor,

shifting

the

current

through

0134

and

0138

by

the

amount

established

through

R123-R128,

and

developing

a

push-pull

output

signal

across

R134

and

R138.

The

gain

of

this

amplifier

Fig.

3-1.

Input

amplifier

partial

diagram

showing

quiescent

current

paths.

3-1

Circuit

Description—5A15N

ranges

from

about

one

to

fifty,

and

is

primarily

determined

by

the

ratio

of

R123

to

the

sum

of

R134

and

R138.

The

push-pull

signal

voltage

from

0134

and

0138

collectors

then

passes

through

emitter

followers

Q142

and

Q146

and

is

transformed

to

a

signal

current

by

Q160

and

0162.

Q177

and

0178

provides

positioning

current.

3-2

The

Variable

Volts/Div

potentiometer

R168,

and

the

Gain-setting

potentiometer

R166,

reduce

the

gain

in

the

Q160-0162

stage

by

developing

an

adjustable

amount

of

signal

voltage

between

their

emitters.

0150,

0156

and

O158

receive

the

push-pull

signal

and

provide

a

single-ended

trigger

signal

out.

f

{

\

5A15N

SECTION

4

CALIBRATION

Change

information,

if

any,

affecting

this

section

will

be

found

at

the

rear

of

this

manual.

Introduction

This

section

of

the

manual

contains

a

procedure

to

return

the

circuits

of

the

5A15N

to

within

their

designed

operating

capabilities.

Calibration

is

generally

required

after

a

repair

has

been

made,

or

after

long

time

intervals

in

which

normal

aging

of

components

may

affect

instrument

accu-

racy.

Locations

of

internal

adjustments

are

shown

in

Figure

4-1,

For

initial

inspection

to

verify

instrument

operation,

the

Basic

Operation

procedure

in

Section

2

should

be

used

(the

instrument

is

checked

with

its

covers

on,

using

a

minimum

of

peripheral

equipment).

Instrument

Maintenance

Before

complete

calibration,

thoroughly

clean

and

inspect

this

instrument

as

outlined

in

the

Maintenance

section

of

the

Oscilloscope

System

manual.

Also,

the

system

manual

contains

information

for

general

mainte-

nance

of

this

instrument,

including

preventive

maintenance,

component

identification

and

replacement,

etc.

Services

Available

Tektronix,

Inc.,

provides

complete

instrument

repair

and

calibration

at

local

field

service

centers

and

at

the

Factory

Service

Center.

Contact

your

local

Tektronix

Field

Office

or

representative

for

further

information.

TEST

EQUIPMENT

REQUIRED

General

The

following

test

equipment

and

accessories,

or

their

equivalents,

are

required

for

complete

calibration

of

the

5A15N.

Specifications

given

for

the

test

equipment

are

the

(c107,

0

c106—

AIT?

ATT2—

Fig.

4-1.

Location

of

internal

controls.

4-1

Calibration—5A15N

minimum

necessary

for

accurate

calibration.

Therefore,

some

of

the

specifications

listed

here

may

be

less

rigorous

than

the

actual

performance

capabilities

of

the

test

equip-

ment.

All

test

equipment

is

assumed

to

be

correctly

calibrated

and

operating

within

the

listed

specifications.

Calibration

Equipment

Alternatives

All

of

the

test

equipment

is

required

to

completely

check

and

adjust

this

instrument.

If

other

equipment

is

substituted,

control

settings

or

calibration

setup

may

need

altering

to

meet

the

requirements

of

the

equipment

used.

Detailed

operating

instructions

for

the

test

equipment

are

not

given

in

this

procedure.

Refer

to

the

instruction

manual

for

the

test

equipment

if

more

information

is

needed.

Special

Calibration

Fixtures

Special

Tektronix

calibration

fixtures

are

used

in

this

procedure

only

where

they

facilitate

instrument

calibration.

These

special

calibration

fixtures

are

available

from

Tektronix,

Inc.

Order

by

part

number

through

your

local

Tektronix

Field

Office

or

representative.

Test

Instruments

1.

5100-N

Series

Oscilloscope.

For

this

procedure,

a

5103N/D10

with

a

5B10N

time

base

is

used.

2.

Standard

amplitude

calibrator.

Output

signal,

1

kHz

square

wave;

output

amplitude,

5

mV

to

20

V;

amplitude

accuracy,

within

0.25%.

Tektronix

calibration

fixture

067-0502-01

recommended.

3.

Constant-amplitude

sine-wave

generator.

Frequency,

2

Hz

to

2.

MHz;

output

amplitude,

from

about

0.5

V

to

40

V

peak-to-peak.

For

example,

General

Radio

1310-B

Oscil-

lator

(use

a

General

Radio

Type

274

OBJ

Adapter

to

provide

BNC

output).

Accessories

4.

Coaxial

cable,

Impedance,

50

2;

length,

42

inches;

BNC

connectors.

Tektronix

Part

No.

012-0057-01.

5.

Input

RC

Normalizer.

RC

time

constant

47

ms

(1

M&2

X

47

pF);

BNC

connectors.

Tektronix

Calibration

Fixture

067-0541-00.

6.

In-line

termination.

Impedance,

50

(2;

accuracy,

+2%,

BNC

connectors.

Tektronix

Part

No.

011-0049-01.

4-2

SHORT-FORM

PROCEDURE

and

INDEX

5A15N

Serial

No.

Calibration

Date

Calibrated

by

1.

Adjust

STEP

ATTEN

BAL

Page

4-3

2.

Adjust

Input

Compensation

and

Attenuator

Page

4-3

Compensation

3.

Adjust

Amplifier

Gain

and

Check

VOLTS/DIV

Page

4-3

Switch

Accuracy

4.

Check

Amplifier

Bandwidth

Page

4-3

CALIBRATION

PROCEDURE

Preparation

NOTE

This

instrument

should

be

adjusted

at

an

ambient

temperature

between

+25°C

and

+30°C

(between

+68°

F

and

+86°

F)

for

best

overall

accuracy.

1.

Remove

the

left

side

plug-in

cover

and

install

the

5AI15N

in

the

left

plug-in

compartment

of

the

5100-Series

Oscilloscope.

2.

Turn

the

power

on

and

preset

the

controls

as

indicated

below:

5A15N

DISPLAY

ON

Input

coupling

GND

VOLTS/DIV

0.1

V

Variable

Cal

POSITION

midrange

5B10N

Display

Alternate

Position

Midrange

Seconds/Div

0.5

ms

Swp

Mag

Out

(normal)

Triggering

Level

cw

‘

Triggering

Source

Left

Auto

Trig

In

AC

Coupl

|

In

Singl

Swp

Out

MAINFRAME

Set

Focus

and

Intensity

for

a

normal

trace.

1.

Adjust

STEP

ATTEN

BAL

a.

ADJUST—STEP

ATTEN

BAL

control

for

no

trace,

shift

while

switching

the

VOLTS/DIV

switch

between

0.1

V

and

50

mV.

Keep

the

trace

on

screen

with

the

POSITION

control.

b.

CHECK

—For

less

than

one

division

trace

shift

while

rotating

the

Variable

VOLTS/DIV

control.

2.

Adjust

Input

Compensation

and

Attenuator

Compensation

a.

Set

the

VOLTS/DIV

switch

to

0.1

V

and

the

input

coupling

selectors

to

DC

(both

buttons

out).

b.

Apply

a

0.5

V

square

wave

from

the

standard

ampli-

tude

calibrator

directly

to

the

input

through

the

coaxial

cable.

Adjust

the

time-base

Level

control

for

stable

triggering.

c.

ADJUST—Att

1

for

a

square

leading

corner

on

the

-

.

SQuare-wave

display.

d.

Insert

a

47

pF

normalizer

between

the

cable

and

input

connector.

e.

Set the

VOLTS/DIV

switch

to

50

mV.

f.

ADJUST—Att

2

for

a

square

leading

corner

on

the

square-wave

display.

g.

Set

the

VOLTS/DIV

switch

to

0.1

V.

h.

ADJUST—Att

3

for

a

square

leading

corner

on

the

square-wave

display.

i..

Remove

the

normalizer.

3.

Adjust

Amplifier

Gain

and

Check

VOLTS/DIV

switch

Accuracy

ADJUST

GAIN

a.

Set

the

VOLTS/DIV

switch

to

10

mV.

Apply

a

50-mV

standard

amplitude

calibrator

square

wave

to

the

input.

b.

ADJUST—Gain

potentiometer

for

a_

five-division

display.

®

Calibration—5A15N

c.

CHECK—VOLTS/DIV_

switch

accuracy,

using

the

VOLTS/DIV

and

standard

amplitude

calibrator

switch

settings

given

in

Table

4-1.

TABLE

4-1

VOLTS/DIV

Switch

Standard

Amplitude

CRT

Display

Setting

Calibrator

Output

|

(Vertical

Deflection)

5V

20

volts

4

div,

0.08

div

2V

10

volts

5

div,

0.1

div

1V

5

volts

5

div,

0.1

div

5V

2

volts

4

div,

0.08

div

2V

1

volt

5

div,

+0.1

div

|.

AV

5

volt

5

div,

0.1

div

50

mV

2

volt

4

div,

+0.08

div

20

mV

.1

volt

5

div,

0.1

div

10

mV.

50

mV

5

div,

+0.1

div

5mV

20

mV

4

div,

+0.08

div

2mvV

10

mV

5

div,

+0.1

div

1

mV

5mV

5

div,

+0.1

div

d.

Remove

the

connections

from

the

input.

4.

Check

Amplifier

Bandwidth

LOW-FREQUENCY

—3

dB

POINT

a.

Apply

a

six-division

1

kHz

signal

from

the

low-

frequency

constant-amplitude

sine-wave

generator

to

the

input.

b.

Change

the

input

frequency

to

2

Hz

and

check

for

a

six-division

signal.

c.

CHECK—For

a

signal

of

at

least

4.2

divisions

when

the

upper

button

is

pressed

to

AC-couple

the

input.

d.

Set

the

input

coupling

back

to

DC.

HIGH-FREQUENCY

—3

dB

POINT

e.

Apply

a

six-division

50

kHz

signal

from

the

low-

frequency

constant-amplitude

sine-wave

generator

through

a

50-ohm

termination

to

the

input.

f.

CHECK—For

a

display

of

at

least

4.2

divisions

when

the

generator

frequency

is

changed

to

2

MHz.

This

completes

the

calibration

procedure.

4-3

5A15N

—

SECTION

5

DIAGRAMS

AND

PARTS

LISTS

_

Symbols

and

Reference

Designators

Electrical

components

shown

on

the

diagrams

are

in

the

following

units

unless

noted

otherwise:

Capacitors

=

Values

one

or

greater

are

in

picofarads

(pF).

Values

less

than

one

are

in

microfarads

(uF).

Resistors

=

Ohms

(42)

Symbols

used

on

the

diagrams

are

based

on

USA

Standard

Y32.2-1967.

Logic

symbology

is

based

on

MIL-STD-806B

in

terms

of

positive

logic.

Logic

symbols

depict

the

logic

function

performed

and

may

differ

from

the

manufacturer's

data.

The

following

special

symbols

are

used

on

the

diagrams:

&

|

External

Screwdriver adjustment.

External

control

or

connector.

Clockwise

control

rotation

in

direction

of

arrow.

Refer

to

diagram

number

indicated

in-diamond.

Refer

to

waveform

number

indicated

in

hexagon.

The

following

prefix

letters

are

used

as

reference

designators

to

identify

components

or

assemblies

on

the

diagrams.

A

AT

B

BT

C

CR

DL

DS

F

FL

H

HR

J

K

L

Assembly,

separable

or

repairable

(circuit

board,

etc.)

Attenuator,

fixed

or

variable

~

Motor

Battery

Capacitor,

fixed

or

variable

Diode,

signal

or

rectifier

Delay

line

Indicating

device

(lamp)

Fuse

Filter

Heat

dissipating

device

(heat

sink,

heat

radiator,

etc.)

Heater

Connector,

stationary

portion

Relay

Inductor,

fixed

or

variable

LR

Inductor/resistor

combination

Meter

Transistor

or

silicon-controlled

rectifier

Connector,

movable

portion

Resistor,

fixed

or

variable

Thermistor

|

Switch

Transformer

Test

point

Assembly,

inseparable

or

non-repairable

(integrated

circuit,

etc.)

Electron

tube

Voltage

regulator

(zener

diode,

etc.)

Crystal

5-1

SINVYOVIGC

8

SLYWd

GNnaiinas

BHB

BHS

cap.

cer

comp

conn

CRT

csk

DE

dia

div

elect.

EMC

EMT

ext

F

&

|

FHB

FHS

Fil

HB

Fil

HS

hex.

HHB

HHS

HSB

HSS

inc

PARTS

LIST

ABBREVIATIONS

|

binding

head

brass

°

binding

head

steel

capacitor

ceramic

composition

connector

cathode-ray

tube

countersunk

double

end

diameter

division

electrolytic

-

electrolytic,

metal

cased

electrolytic,

metal

tubular

external

|

focus

and

intensity

flat

head

brass

flat

head

steel

fillister

‘head

brass

fillister

head

steel

height

or

high

hexagonal

_

hex

head

brass

hex

head

steel

hex

socket

brass

‘hex

socket

steel

inside

diameter

-

incandescent

int

Ig

met.

mtg

hdw

OD

OHB

OHS

P/O

PHB

PHS

plstc

PMC

poly

prec

PT

PTM

RHB

RHS

SE

SN

or

S/N

©

S

or

SW

TC

THB

thk

.

THS

tub.

var

Ww

WW

internal

length

or

long

metal

mounting

hardware

outside

diameter

|

oval

head

brass

oval head

steel

part

of

pan

head

brass

pan

head

steel

plastic

paper,

metal

cased

polystyrene

precision

paper,

tubular

paper

or

plastic,

tubular,

molded

round

head

brass

-round

head

steel

-

single

end

serial

number’

switch

temperature

compensated

truss

head

brass

thick

|

truss

head

steel

tubular

variable

wide

or

width

wire-wound

©

al

\%

CODED

PROBE

S\99

(DISPLAY)

INPUT

COUPLING

ATTENUATOR

READOUT

~

SWITCHING

|

7

PLUG-IN

9)

|

ai92

|

LL

w

LLL

Le

pe

\

aN

ae

+

LOGIC

?

AMP

LAMP

SWITCHING

S

PARAPHASE

[EMITTER

>

?

>

PREAMPLIFIER

FOLLOWER

|

QI2ZOA

Qi20B

ouT

PUT

Q\150

Q\34

AMPLIFIER

Q\36

Qise

pl

e

>

|

Q\4%U_

QIAO

Q\6CO

QIG2Z

POSITIONING

=

POSITION

|

CURRENT

RA\70

DRIVER

QI70

=—

Q2770

TRIGGER

©

Pu

\

UT

T

S

QiSO

QiSse@

~

Q\5ea

BLOCK

DIAGRAM

TO

LOGlic

CIRCUITS

+

SIG

OUT

-SIG

OUT

TRIG

SIG

OUT

hq

O7T

|

WVYSVIC

1907198

COMPONENT

LOCATIONS

5A15N

PARTS

LOCATION

GRID

G

PA

|

>

Gopyright@1976,

TEKTRONIX,

INC

Added

SN

BO040000

CKT

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GRID|CKT

GRID/CKT

GRID[CKT

GRID|CKT

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LOC.

|

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LOC.

|

NO.

LOC.

|

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LOC.

|

NO.

LOC.

}

NO.

LOC.

|

NO.

LOC.

|

NO.

LOC.

|

NO.

LOC.

|

NO.

LOC.

C101

I-5

|

C190

K-4

|

Q120

1-2

|

Q177

C-2]

R101

K-4]

R123

H-2]

R139

E-2]R161

C-2

|

R179

C-2

{$101

K-5

C104

=

J-2.

|

C198

B-5

|0130

G-2]

0178

D-2|

R102

J-5

|

R124

H-2]

R141

D-2]

R163.

C-2

|

R180

C-3

|$110

1-3

C106

ss

-3

Q134

F-2]

Q191

J-2

1R107

J-1]R125

H-2]

R142

D-2]

R166

E-3

|

R182

D-2]/8199

~

D-1

C107.

J-3]CR114

1-2

|0136

G-2]

Q192

K-2]

R108

1-2

|

R126

G-2|

R143

D-2]

R167

D-2|R187

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J-1}|CR130

F-2

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I-11

R127

G-2|

R146

p-2]

R168

F-3

|

R189

C-2

C110

l-2

|

CR136

F-1

[0142

E-2

R111

1-1]

R128

G-2]

R147

D-2

R190

=—F-3

C113

1-2

0146

E-2

R113

1-2

|

R129

F-1]

R150

D-3]

R171

B-2

|

R191

K-2

C130

F-2]

VR113

J-2

|Q150

D-3

R114

F-3]

R130

F-2}

R152

E-3]R172

c-2

|

R192

K-2

C135

=—-=B-2

Q156

D-4

R116

K-3]

R134

E-2|

R154

E-3/R173°

C-2

|

R194

F-3

C136

F-1

Q158

D-3

R117

G-2]

R135

E-1]

R156

E-4]

R174

8

B-2

C177

C-2

Q160

D-2

R118

G-1]

R136

F-1]

R158

D-3

R177

C-3

C178

3=6C-3

Q162

E-2

R121

F-2]

R138

E-1]

R159

c-2]R178

=

C-3

©1

Tektronix 5A15N User manual

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