Tektronix 5103N Instruction Manual

INSTRUCTION

MANUAL

S103N

OSCILLOSCOPE

SYSTEM

pLO^j/sl

SBCTIDI4

Tektronix

,

Inc.

•

P.

O.

Box 500

•

Beaverton, Oregon 97005

•

Phone

644-0161 •

Cables:

Tektronix

070

-

1143-00

471

m.

:

.Vi

p

+*

f

tl**

.

bi""

-

*'"

»

i

'

»

«

'

»

-fete*

g*

ii

!

|t»i

t

fU'lUd

ith all

requests

for

parts

or

pacifications and

price

change

privileges

reserved.

Copyright

©

1971

by

Tektronix,

Inc.,

Beaverton,

Oregon.

Printed

in the

United

States

of

America.

All

rights

reserved.

Contents

of

this

publication

may

not

be

reproduced

in

any

form

without

permission

of

the

copyright

owner.

«St 4.3

‘ivXP-

U.S.A.

and foreign

Tektronix

products

covered

by

U.S.

and foreign

patents

and/or

patents

pending.

5103N

TABLE OF

CONTENTS

SECTION 1

SPECIFICATION

Introduction

Instrument

Options

Table

1-1

Electrical

Characteristics

Table

1-2

Environmental

Characteristics

Table

1-3

Mainframe

Physical Data

Page

1-1

1-1

1-1

1-2
1-3

SECTION 2

OPERATING

INSTRUCTIONS

General

2-1

Preliminary

Information

2-1

Rackmounting

2-1

Operating

Voltage

2-1

Operating

Temperature

2-2

Plug-In Units

2-2

Installation

2-3

Selection

2-3

General

Operating

Information

2-3

Display

Switching

Logic

2-3

Vertical

Display

Mode

2-4

X-Y

Operation

2-4

Raster

Display

2-4

Basic

Oscilloscope

Applications

2-4

General

2-4

Peak-to-Peak

Voltage

Measurements—AC

2-5

Instantaneous

Voltage

Measurements—DC

2-5

Comparison

Measurements

2-6

Time

Period

Measurement

2-7

Determining

Frequency

2-8

Risetime

Measurements

2-9

Multi-Trace

Phase

Difference

Measurement

2-10

X-Y

Phase

Measurements

2-11

SECTION 3

CIRCUIT

DESCRIPTION

Page

Replacement

Parts

4-5

Standard

Parts

4-5

Special Parts

4-5

Ordering

Parts

4-5

Component

Replacement

4-5

General

4-5

Circuit Board

Replacement

4-5

Transistor and

Integrated Circuit

Replacement

4-6

Interconnecting

Pin Replacement

4-6

Switch

Replacement

4-6

Cathode-Ray

Tube

Replacement

4-7

Neon Bulb

Replacement

4-8

Power

Transformer Replacement

4-8

Fuse

Replacement

4-8

Recalibration After

Repair

4-8

SECTION 5

CALIBRATION

Introduction

5-1

Services

Available

5-1

Equipment

Required

5-1

Preliminary

Procedure

5-1

Procedure

5-2

SECTION 6

RACKMOUNTING

Introduction

6-1

Instrument

Conversion

6-1

Mounting

Method

6-1

Rack

Dimensions

6-1

Installing

the

Slide-Out

Tracks

6-1

R5100

Installation and

Adjustment

6-4

Maintenance

6-4

Block

Diagram

Description

3-1

Interface

3-1

Clock

Generator

3-1

Countdown

Circuit

3-1

Auxiliary

Boards

3-2

Vertical

Amplifier

3-2

Horizontal

Amplifier

3-2

Power Supply

3-2

Power

Input

3-2

Low-Voltage

Rectifiers

and Unregulated

Outputs

3-2

Line

Trigger

3-3

CRT

Heater

Windings

3-3

Calibrator

3-3

SECTION

7

ELECTRICAL

PARTS

LIST

Abbreviations

and Symbols

Parts Ordering

Information

Index

of

Electrical

Parts

List

Electrical

Parts List

SECTION 8

DIAGRAMS

and CIRCUIT

BOARD

ILLUSTRATIONS

Symbols

and

Reference

Designators

Schematic

Diagrams

and

Component

Board

Locations

SECTION 9

MECHANICAL

PARTS

LIST

SECTION

4 SYSTEM

MAINTENANCE

5100

Panel

Removal

4-1

Preventive

Maintenance

4-1

General

3-1

Cleaning

4-1

Calibration

4-1

Troubleshooting

4-1

General

4-1

Troubleshooting

Aids

4-1

Troubleshooting

Equipment

4-3

Troubleshooting

Techniques

4-3

Mechanical

Parts

List

Mechanical

Parts

List

Illustration

Accessories

Repackaging

CHANGE

INFORMATION

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 the

electronics

industry.

Change

information,

if any,

is located

at

the rear

of

this

manual.

SECTION

1

SPECIF1CATION

5103N

Change

information,

if any,

affecting

this section will be found

at

the rear of the manual.

Introduction

,

NOTE

The 5103N

Power

Supply/Amplifier

module is an inter-

connection unit

for the display

module and

plug-in units. It

is operated

with

a

display

module, and

comprises one-half

of the

5100-series

oscilloscope

mainframe. It

accepts

up

to

three plug-in

units and

provides

pre-amplification

for the

deflection signals.

The

center and

left plug-in

compartments

are connected

to the

vertical

deflection system,

and the

right plug-in

compartment

is

connected to the

horizontal

deflection system.

Electronic

switching between

the left

and

center plug-ins

allow a

multi-trace

vertical

display

(chopped and

alternate

time-sharing modes).

The unit also

contains

regulated

DC-voltage

supplies to

provide power to

the

instrument

system.

The following electrical characteristics

apply over

an

ambient

temperature range of

0°C

to

+50°C.

Many of

the

measurement

capabilities

of the

5100-

Series

Oscilloscope

are

determined by

the

choice of

display

modules

and plug-in

units.

The

following

electrical

characteristics

apply

to the

Power

Supply/

Amplifier

unit only,

unless

noted

otherwise.

For

display

modules

or plug-ins

only,

see the

specification

section

of the

manual for

that unit.

INSTRUMENT

OPTIONS

Option 1

An export

transformer

is

available for

the 5100-series

oscilloscopes, and can be installed

as

part

of

the instrument

when ordered, or it can be

installed

at

a

later time. This

transformer permits

operation from

100-volt,

110-volt,

120-volt, 200-volt, 220-volt, and 240-volt sources

with

power-line frequencies

of from

50 to 60

hertz

and 400

hertz. For further information on option

1,

see

your Tek-

tronix, Inc.,

catalog,

or

contact

your local Tektronix Field

Office or representative.

TABLE

1-1

ELECTRICAL CHARACTERISTICS

Characteristic

Performance Requirement Supplemental Information

Vertical and

Horizontal Amplifiers

Input Signal

Amplitude

(Differential Input)

50

millivolts per

displayed division, ver-

tical

and

horizontal.

Horizontal

Centering 0.5

division or less.

Bandwidth DC to

at least 2.5

megahertz.

X-Y Phase Difference

(Checked

with two plug-ins

of the

same type)

1°

or less to 100 kilohertz.

Sensitivity

Change

Accuracy

degrades

by up to

1% when

operated in split-screen storage.

1-1

Specification—

5 103N

TABLE

1-1

(cont)

Characteristic

Performance

Requirement

Supplemental

Information

Channel Switching

Chop Clock Frequency

About 200 kilohertz.

Channel Chop Rate

About 100 kilohertz.

Plug-In

Chop Rate

About 50 kilohertz.

Alternate Frequency

Sweep rate (once

each sweep).

Plug-In

Alternate Rate

•

One-half sweep

rate (once

every two

sweeps).

Channel Alternate Rate

One-fourth

sweep

rate (once

every four

sweeps).

TABLE

1-2

ENVIRONMENTAL

CHARACTERISTICS

Characteristic

Performance

Temperature

Operating

Range

0°C to

+50° C.

Non-operating

Range

-40°

C to +70°C.

Altitude

Operating

Range

To 1

5,000

feet.

Non-operating

Range

To

50,000

feet.

Vibration

Range

To 0.01 5 inch

peak-to-peak

displacement

at 50 cycles per

second.

Shock Range

To

30

g's, 1/2 sine,

1 1 milliseconds

duration.

Specification

—5

1

03N

TABLE

1-3

MAINFRAME PHYSICAL

DATA

(5103N with a Display Unit)

Characteristic

5100-Series Oscilloscope

R51 00-Series Oscilloscope

Dimensions (maximum)

Height

(overall) 1

1

.6

in.

(29.5 cm)

5.2

in.

(13.2 cm)

(cabinet) 1 0.5

in.

(26.7

cm)

Length (overall) 1 9.9

in.

(50.5

cm)

20.0 in.

(51.0

cm)

(cabinet)

1 8.3 in.

(46.5

cm)

18.3

in.

(46.5

cm)

Width (overall)

8.4 in.

(21.4 cm)

19.0

in.

(48.3

cm)

(cabinet)

16.8

in.

(42.7

cm)

Net Weight

«22.8

lbs.

(10.3

kg) ^23.5

lbs.

(10.7

kg)

Shipping

Weight

«30.0

lbs.

(13.6

kg) «39.0 lbs.

(17.7

kg)

Export

Weight

^45.0

lbs. (20.4

kg) ^59.0 lbs.

(26.8

kg)

1-3

NOTES

5103N

SECTION 2

OPERATING

INSTRUCTIONS

Change

information, if

any, affecting

this section

will

be found at

the

rear

of this

manual.

General

To

effectively

use

the 5103N,

the operation and capa-

bilities

of the

instrument

must

be known. The 5103N

Power

Supply/Amplifier

module

forms the basis

of

an

oscil-

loscope

system,

and

requires a

display

module and plug-ins

to

complete

the system.

This

section

describes inter-

connection

and

general

operation

of

the

units, including

preliminary

information

for first-time

turn-on,

selection

and

installation

of plug-ins,

general operating

information,

and some

basic

oscilloscope

applications.

Detailed

operating

information

for

a

specific

display

module or

plug-in is

given

in the

instruction

manual for that

unit.

PRELIMINARY

INFORMATION

Rackmounting

The

5103N

Power

Supply/Amplifier

module and

the dis-

play

module

can

be

fastened

together

stacked

or

side by

side,

permitting

operation

as a

bench

oscilloscope,

or it

can

be

operated

in a

standard

19-inch rack.

Complete

instruc-

tions

for

rackmounting

are

given

in Section

6,

Rack-

mounting.

NOTE

Before

attempting

to

operate

the

instrument,

make

sure

the

module

wiring

interconnections

are correct,

and

if

display

modules

have

been

changed,

that the

correct

auxiliary

board is

installed in

the

socket

on

the

plug-in

interface

board.

Operating

Voltage

This

instrument

is

designed

for operation

from a

power

source

with

its

neutral at

or near

earth

(ground)

potential

with a

separate

safety-earth

con-

ductor.

It is

not

intended

for

operation

from

two

phases

of

a

multi-phase

system,

or across

the legs

of

a

single-phase,

three-wire system.

The

5100-Series

Oscilloscope

is

operated

from a

1

15-volt

nominal

line

voltage

source (NOTE:

for

instrumentshaving

optional

export

transformer,

see

information

following

Table

2-1

).

The

power

transformer is wired

to

permit

either

of two

regulating

ranges to

be selected.

The range

for

which

the

primary taps

are set is

marked on the

rear panel

of the

instrument.

Use

the

following

procedure to

change regu-

lating

ranges:

1

.

Disconnect

the

instrument

from the

power source.

2.

Remove the

bottom

dust

cover

of the

instrument

to

gain access to

the

Power Supply

circuit board

.

3.

Remove the

brown

line-selector

block

from the

square-pin

connectors

(see Fig. 2-1)

and

place it

on

the

desired set

of pins

(use pins

marked H

or M

only).

Select a

range

which is

centered

about

the average

line

voltage

to

which

the

instrument is

to be

connected

(see Table

2-1

).

4.

Change

the

nominal

line

voltage

information

on

the

rear

panel of the

instrument. Use a

non-abrasive

eraser

to

remove

previous

data,

and

mark in

new data

with a

pencil.

5.

Replace

the

bottom

dust

cover and

apply

power to

the

instrument.

TABLE

2-1

Regulating

Ranges

Line

Selector

Block

Position

Regulating

Ranges

L Do

not

use

Internally

disconnected

M

(110

V

Nominal)

99

VAC

to 121

VAC

H

(120

V

Nominal)

108

VAC

to

132 VAC

Optional

Export

Transformer.

An

optional

export

trans-

former

permits

the

5100-Series

Oscilloscope

to be

operated

from

either a

115-volt

or

a

230-volt

nominal

line

voltage

source.

This

transformer is

wired to

permit

one

of

three

regulating

ranges

to

be

selected

for

either

115-volt

or

230-volt

nominal

operation.

The

range

for

which

the

2-1

Operating

Instructions—

5103N

Fig.

2-1.

Location

of

the

line-selector

block

on the Power Supply

circuit

board.

primary taps

are set is

marked

on

the

rear panel of

the

instrument. Use

the

following

procedure to obtain correct

instrument operation

from the line voltage

available:

5. Change the nominal line

voltage

information

on the

rear

panel of the instrument.

Use a

non-abrasive

eraser

to

remove

the previous

data, and mark in

new

data with

a

pencil.

6.

Replace the

bottom dust cover and

apply power

to

the instrument.

Damage to the instrument

may result from

incorrect

placement of

the line-selector block.

TABLE

2-2

Regulating

Ranges For Export

Transformer

Line

Selector

Block

Position

Regulatir

1

15-Volts

Nominal

lg

Range

230-Volts

Nominal

L

90 VAC

to 110

VAC

180

VAC to

220

VAC

M

99 VAC

to 121

VAC 198

VAC

to 242

VAC

H

108 VAC

to

132 VAC

216

VAC to

264

VAC

Line Fuse

Data

1

.6 A

slow

-blow

1

A slow-blow

1

. Disconnect the instrument from

the

power

source.

2.

Remove the

bottom dust cover of

the instrument

to

gain

access to the Power

Supply circuit board.

3.

To convert from

115 volts to

230 volts

nominal line

voltage, or

vice versa, remove

the line-selector

block from

the square-pin

connectors (see Fig.

2-1) and

replace

it with

the

other

block. Remove the line

fuse from

the fuse

holder

located

on the rear

panel

of

the display

module and

replace

it with

one having

the correct rating.

The

unused line-

selector

block and line fuse

can be

stored on the Power

Supply circuit board.

Change the

line-cord

power

plug

to

match the

power-source

receptacle or

use an adapter.

NOTE

The

1 15-volt block

is color coded

brown,

and it con-

nects the transformer

primary windings

in parallel.

The

230-volt block is color

coded red,

and it

connects

the primary

windings in series.

4.

To

change regulating ranges,

place

the line-selector

block on the desired

set

of

square

pins. Select

a

range

which

is centered

about the average line

voltage

to which the

instrument

is to be connected (see

T

able 2-2)

.

Operating Temperature

The

5103N

can be operated where the ambient air

temperature

is

between

0°C

and

+50°C.

The instrument can

be stored in ambient temperature between

—

40°C

and

+70°C.

After storage

at a

temperature

beyond the

operating

limits, allow

the

chassis temperature

to

come within the

operating limits before power is

applied.

A thermal cutout in

the display module provides thermal

protection and disconnects

the power

to

the instrument if

the internal temperature exceeds a

safe

operating level. This

device will automatically re-apply

power

when the tempera-

ture

returns

to a

safe level.

PLUG-IN UNITS

General

The 5103N is designed to accept up to three Tektronix

5-series

plug-in units. This plug-in

feature

allows

a

variety

of

display

combinations and also allows selection of band-

width,

sensitivity, display mode, etc., to

meet

the measure-

ment requirements. In addition, it allows

the

oscilloscope

system to be expanded to meet future measurement

requirements.

The overall capabilities of

the

resultant

system are in

large

part determined by the characteristics of

the

plug-ins selected.

2-2

Operating

Instructions—

51

03N

Installation

To

install

a

plug-in unit

into one

of

the plug-in compart-

ments,

align the slots in the

top and bottom

of

the plug-in

with the associated guides in

the plug-in compartment. Push

the plug-in unit

firmly

into

the plug-in

compartment

until it

locks into place.

To remove a

plug-in, pull the release

latch

on the plug-in

unit to disengage

it and pull the unitout of

the

plug-in compartment.

Plug-in units can be removed or

installed without turning

off the instrument power. It is not

necessary

that

all of the plug-in

compartments

be

filled

to

operate the instrument; the

only plug-ins needed are those

required for the measurement to

be made.

When the display unit is

calibrated in accordance with

the calibration procedure given

in the display

unit instruc-

tion manual, the

vertical and

horizontal

gain

are

standard-

ized.

This allows calibrated

plug-in units to be changed

from one plug-in

compartment to

another

without re-

calibration. However, the

basic calibration

of the

individual

plug-in units should be

checked when they

are installed

in

this system to

verify their

measurement accuracy.

See the

operating instructions section

of the plug-in unit manual

for

verification procedure.

Selection

The plug-in

versatility of the 5100-series oscilloscope

allows a

variety of display modes

with

many

different

plug-

ins.

The following

information

is

provided here

to aid

in

plug-in selection.

To produce

a single-trace display, install

a single-channel

vertical unit (or

dual-channel unit

set

for

single-channel

operation) in

either

of

the vertical

(left

or center)

compart-

ments and

a time-base unit in the horizontal (right)

com-

partment.

For dual-trace displays, either

install

a dual-

channel

vertical unit in one of the vertical

compartments or

install

a

single-channel vertical

unit in each vertical

com-

partment.

A combination of

a

single-channel

and

a

dual-

channel

vertical unit allows a three-trace display;

likewise,

a

combination of

two dual-channel vertical units allows

a

four-trace

display.

To

obtain a

vertical sweep

with the

input

signal

displayed

horizontally, insert the

time-base unit into one

of

the vertical

compartments and

the amplifier unit in the

horizontal compartment.

If

a

vertical sweep is used,

there

is

no retrace blanking;

however,

if used in

the right vertical

(center)

compartment,

internal triggering is

provided.

For X-Y

displays,

either

a

5A-series amplifier unit or a

5B-series time-base

unit

having an

amplifier channel can be

installed in the

horizontal

compartment

to accept

the

X

signal. The

Y

signal is

connected to a

5A-series amplifier

unit

installed in a

vertical compartment.

Special

purpose plug-in units may

have specific

restric-

tions regarding

the compartments

in which they can

be

installed.

This

information will be given in the

instruction

manuals

for these plug-ins.

GENERAL

OPERATING INFORMATION

Display

Switching Logic

General.

The electronic

switching for time-shared dis-

plays is produced at

the plug-in interface

within

the

main-

frame; however,

the switching logic

is

selected on the plug-

in

units. The system

allows any combination of plug-ins and

Display switch settings.

Refer

to

the individual plug-in

manuals

for specific capabilities and

operating procedures.

Vertical

Plug-in

Compartments.

When

a

vertical

plug-in

is in the

active mode

(Display button pushed in), a

logic

level is

applied

to

the switching

circuit in the

mainframe

and

a

display

from this plug-in will

occur. When two plug-

ins are both active

in the vertical

compartments,

a

multi-

trace

display will occur

(Alternate or Chopped). When no

plug-in is in

the active mode,

the signal from the

left

com-

partment

will be

displayed.

A

time-base unit operated in

one

of the vertical compartments

has

a

permanent internal

connection to apply a

logic level to the switching

circuit;

thus, a

vertical trace produced by this unit

will always be

displayed.

Horizontal Plug-in

Compartment. Alternate

or Chopped

display switching is selected

on

a

time-base

unit operated

in

the horizontal

compartment. When the

Display

switch is

out (Alt),

a negative impulse is supplied

at the

end

of

the

sweep to allow

alternate switching

between

plug-ins and

plug-in

channels. When the

Display

switch is pushed

in

(Chop),

a

chopped

display will appear if

a multi-trace

dis-

play

is required by the

plug-ins in the

vertical compart-

ments. An amplifier

plug-in unit

operated

in the

horizontal

compartment has

a permanent

internal

connection

to pro-

vide

a

chopped

display

if

it is

required.

Switching

Sequence. Four

display

time

slots are

pro-

vided

on a

time-sharing

basis.

When

two

vertical

plug-ins are

active,

each

receives

two

time

slots

and

the

switching

sequence is left,

left,

right,

right,

etc.

The

two time

slots

allotted

to each

plug-in

are

divided

between

amplifier

channels

in

a dual-trace

unit; if

two

dual-trace

plug-ins are

active,

then

the

switching

sequence is

left

Channel

1,

left

Channel

2,

right

Channel

1,

right

Channel

2,

etc. If

only

one

vertical

plug-in

is

active,

it receives

all

four

time slots.

The

switching

sequence

is the

same for

both

the

Alternate

and

Chopped

display

modes.

Operating

Instructions—

5103N

Vertical Display Mode

Display On. To

display a signal,

the Display button of

the applicable

vertical plug-in unit must be

pushed

in to

activate the unit.

If two plug-ins are installed in the vertical

compartments and

only the

signal from one

of

the units

is

wanted, set the

Display

switch of the unwanted unit to

Off

(button out).

If

neither plug-in is activated, the signal

from

the

left

unit

will be

displayed. Both plug-ins can be acti-

vated

for multi-trace

displays.

Alternate

Mode.

The

alternate

position

of the time-base

unit

Display

switch

produces a

display which alternates be-

tween activated

plug-ins and

amplifier channels with each

sweep

of

the CRT.

The

switching sequence

is described

under Display

Switching

Logic in

this section. Although the

Alternate mode

can be used at

all sweep rates,

the

Chop

mode

provides a

more

satisfactory display at

sweep rates

from about

one

millisecond/division to

five

seconds/

division. At

these

slower sweep

rates, alternate-mode

switching becomes

difficult to

view.

Chopped Mode. The Chop position of the

time-base

unit Display switch produces

a

display which

is

electronically switched between channels

at a 200-kilohertz

rate. The switching sequence has been

discussed earlier.

In

general, the Chop mode provides the

best display

at

sweep

rates slower

than about one millisecond/division or

when-

ever dual-trace, single-shot phenomena

are to be displayed.

At

faster

sweep rates, the chopped switching

becomes

apparent

and may

interfere

with the display.

Dual-Sweep Displays.

When

a

dual-sweep time-base unit

is operated in the horizontal compartment, the alternate

and chopped time-shared

switching for either

the A or

B

sweep

is

identical to that

for

a single time-base unit. How-

ever, if

both

the

A

and

B

sweeps

are operating, the

5103N

operates in the independent

pairs

mode.

Under

this condi-

tion, the left vertical unit is

always

displayed at the

sweep

rate of the

A

time base and the right vertical unit

is dis-

played

at the

sweep rate

of

the

B

time base

(non-delayed

sweep

only). This

results in two displays that have com-

pletely

independent

vertical deflection and

chopped or

alternate sweep switching.

Dual-Beam Displays. When

a dual-beam display

module

is

operated with

the 5103N, the

switching

sequence

is

altered

slightly.

Between-channel

switching

occurs; how-

ever, switching

between

plug-ins is

not necessary

and does

not

occur. Also,

the

left

vertical

unit is always

displayed

by

the

upper

CRT beam and the right

vertical

unit is displayed

by the lower

CRT beam.

X-Y

Operation

In some

applications, it is desirable

to display

one signal

versus another

(X-Y) rather than

against an internal

sweep.

The

flexibility of

the plug-in units

available for

use with the

5103N

provides

a means

for

applying

a signal

to

the hori-

zontal

deflection

system

for

this type of

display. Some of

the

5B-series time-base

units can

be operated

as

amplifiers

in addition

to their normal

use

as

time-base

generators, or

an

amplifier

unit can be installed

in the horizontal

compart-

ment.

The latter

method

provides the

best X-Y

display,

particularly

if

two identical

amplifier

units are

used, since

both

the X and Y

input

systems will

have the

same capa-

bilities

and

characteristics.

In either

case, the mainframe

bandwidth

and

sensitivity are

equal

and inherent

phase shift

is adjustable

to 0 degrees in the

display

module. For

further

information

on obtaining

X-Y displays,

see

the plug-in

unit

manuals.

Raster

Display

A raster-type

display can be used

to

effectively

increase

the apparent sweep

length. For this

type

of

display, the

trace

is deflected both vertically

and horizontally

by

saw-

tooth signals, and is accomplished

by installing

a

5B-series

time-base

unit in one

of

the vertical

compartments as well

as one in the horizontal

compartment. Normally, the

unit

in the vertical

compartment should

be set to

a

slower sweep

rate

than

the one in the horizontal

compartment; the num-

ber of

horizontal

traces in the raster

depends upon the ratio

between

the two sweep

rates. Information

can be displayed

on the raster

using the Ext Intensity Input to provide

intensity

modulation of the

display. This type

of raster

display could

be used to provide

a

television-type display.

Complete information

on

operation

using the Z-axis feature

is

given in the operating instructions

section

of the display

module manuals.

BASIC

OSCILLOSCOPE

APPLICATIONS

General

The

5100-Series

Oscilloscope

and

its

associated

plug-in

units

provide

a very

flexible

measurement

system.

The

capabilities

of

the

overall

system

depend

mainly

upon the

plug-ins

that are

chosen for

use with

this

instrument.

The

following

information

describes

the

procedures

and

tech-

niques

for

making

basic

measurements.

These

applications

are not

described

in

detail,

since

each

application

must

be

adapted

to the

requirements

of the

individual

measurement.

Specific

applications

for

the

individual

plug-in

units are

described

in the

manuals for

those

units.

The overall

system

can also

be

used

for

many

applications

which

are

not

described

in

detail

either in

this

manual

or

in the

manuals

for

the

individual

plug-in

units.

Contact

your local

Tek-

tronix

Field

Office

or

representative

in making

specific

measurements

with

this instrument.

Operating

Instructions—

5103N

The

following books describe oscilloscope measurement

techniques

which can be

adapted for

use

with

this

instrument.

Harley Carter, "An

Introduction

to

the

Cathode Ray

Oscilloscope”,

Philips

Technical

Library, Cleaver-Hume

Press

Ltd., London, 1960.

J.

Czech, "Oscilloscope Measuring

Techniques",

Philips

Technical Library, Springer-Verlag, New York,

1965.

Robert

G.

Middleton,

"Scope Waveform

Analysis”,

Howard

W. Sams

&

Co. Inc., The

Bobbs-Merrill

Company

Inc.,

Indianapolis,

1963.

Robert

G.

Middleton

and L. Donald Payne,

"Using

the

Oscilloscope

in Industrial Electronics",

Howard

W.Sams&

Co. Inc.,

The Bobbs-Merrill Company

Inc.,

Indianapolis,

1961.

John

F. Rider and Seymour

D. Uslan, "Encyclopedia

of

Cathode-Ray

Oscilloscopes and Their

Uses", John F.

Rider

Publisher Inc., New York,

1959.

John F. Rider, "Obtaining and Interpreting

Test

Scope

Traces", John

F.

Rider

Publisher Inc., New York,

1959.

Rufus P. Turner, "Practical

Oscilloscope

Handbook”,

Volumes

1 and

2,

John

F.

Rider Publisher

Inc., New York,

1964.

Peak-to-Peak Voltage Measurements—

AC

To make

peak-to-peak voltage

measurements,

use the

following

procedure:

1

.

Set

the Input Coupling on the vertical plug-in

unit to

GND and connect the signal to the input connector.

2.

Set

the Input Coupling to AC and set the Volts/Div

switch

to

display about 5 or

6

vertical divisions of

the

waveform. Check that the Variable Volts/Div control (red

knob)

is in the Cal

position.

3. Adjust

the time-base

triggering controls for

a stable

display

and set

the Seconds/Div

switch

to display several

cycles

of

the waveform.

4. Turn the

vertical Position control so the lower

portion of

the

waveform coincides

with

one

of

the graticule

lines below the center

horizontal line,

and the top

of

the

Position

to center

vertical

line

Fig.

2-2.

Measuring peak-to-peak voltage of

a

waveform.

waveform

is

in the

viewing area. Move the display

with the

horizontal Position

control so one

of

the

upper peaks is

aligned with the

center vertical reference line (see

Fig.

2-2).

5.

Measure the vertical deflection from peak to peak

(divisions)

.

NOTE

This technique

may

also be

used to

make measure-

ments

between

two points on

the waveform

,

rather

than

peak to

peak.

6.

Multiply the distance (in divisions)

measured

in step

5

by

the Volts/Div switch setting. Also

include the attenua-

tion factor of the probe, if applicable.

EXAMPLE:

Assume

a

peak-to-peak vertical deflection of

4.6

divisions and

a

Volts/Div switch

setting of 5 V.

Peak-to-peak

_

4.6

5

(Volts/Div_

23

volts (divisions)

setting) volts

NOTE

If an

attenuator probe not having

the capability to

change

the scale factor readout (Volts/Div)

is used,

multiply the right side of

the above

equation by the

attenuation factor.

Instantaneous Voltage

Measurement—

DC

To measure the

DC

level

at a given point on

a

waveform,

use the following

procedure:

2-5

Operating

Instructions—

51

03N

r

r

f

Vertical

distance

1

I

1

—

—

—

'

"

(A)

—

—

J

A

Reference

line

Fig.

2-3. Measuring

instantaneous DC

voltage with

respect to

a

reference

voltage.

1.

Set the

Input

Coupling

of the vertical

plug-in unit

to

GND and

position

the

trace to the bottom

line of the grati-

cule

(or other

selected

reference

line).

If the voltage to be

measured is

negative

with

respect to ground, position

the

trace to the

top

line

of the graticule. Do not move

the

vertical

Position

control

after this

reference has been estab-

lished.

6. Multiply

the distance

measured

in

step 4 by the

Volts/Div

switch setting.

Include the

attenuation

factor of

the probe, if

applicable

(see the

note following

the Peak-to-

Peak

Voltage

Measurement

example).

EXAMPLE:

Assume that

the vertical

distance

measured

is

4.6

divisions,

the polarity

is positive,

and

the Volts/Div

switch

setting

is 2

V.

Instantaneous

_ 4.6

^

2

-

+9.2

Voltage

(divisions) (Volts/Div)

volts

Comparison

Measurements

In

some

applications,

it

may

be necessary

to establish

a

set

of

deflection

factors other

than those

indicated

by the

Volts/Div or

Seconds/Div switches.

This

is useful for

com-

paring

signals to

a

reference

voltage

amplitude or

period. To

establish

a new set of

deflection

factors based

upon

a

specific reference

amplitude or period,

proceed

as

follows:

VERTICAL

DEFLECTION

FACTOR

1.

Apply

a

reference

signal of known

amplitude

to the

vertical

input

connector. Using the

Volts/Div

switch and

Variable

Volts/Div

control, adjust the

display for

an exact

number of

divisions.

Do not

move the Variable

Volts/Div

control after

obtaining the

desired deflection.

NOTE

To

measure

a

voltage level with respect to a voltage

other

than

ground,

make the following changes to

step 1: Set

the

Input Coupling

switch to

DC

and

apply the

reference

voltage to the input connector,

then

position the

trace to the

reference line.

2.

Connect

the

signal to

the input connector. Set the

Input

Coupling to

DC

(the ground reference can be checked

at

any time by

setting the

Input Coupling to GND).

3.

Set the

Volts/Div switch

to

display

about 5 or

6

verti-

cal divisions

of

the

waveform. Check

that the Variable

Volts/Div control

(red

knob) is in the Cal position.

Adjust

the time-base triggering

controls for

a stable display.

4.

Measure the distance in divisions between the ref-

erence line and the point on the

waveform

at which the

DC

level is to be

measured. For example,

in Fig.

2-3

the

measurement is made

between

the reference line

and point

A.

5.

Establish the polarity. The voltage is

positive

if

the

signal

is

applied

to the

+

input connector and the waveform

is above the reference line.

2.

Divide the amplitude of

the reference

signal (volts)

by the

product

of

the

deflection in

divisions (established

in

step

1)

and the

Volts/Div

switch

setting. This is the Deflec-

tion

Conversion

Factor.

Deflection

Conversion

=

Factor

reference signal amplitude (volts)

deflection (divisions X Volts/Div setting

3.

To determine the peak-to-peak amplitude

of

a signal

compared

to a

reference,

disconnect the

reference and

apply the

signal to the input

connector.

4.

Set the

Volts/Div switch to

a setting

that provides

sufficient deflection

to

make the measurement. Do not

readjust the Variable Volts/Div control.

5.

To establish

a

Modified Deflection Factor

at

any

setting of the Volts/Div switch, multiply the Volts/Div

switch

setting by

the Deflection Conversion Factor

established

in step 2.

Modified

Deflection

Factor

Volts/Div

setting

Deflection

Conversion

Factor

®

2-6

Operating

Instructions—

5103N

6.

Measure the vertical deflection in divisions

and deter-

mine the amplitude by the

following

formula:

Div switch

setting by the

Deflection

Conversion Factor

established in step 2.

Signal

Amplitude

Modified

Deflection X

Factor

deflection

(divisions)

Modified

Deflection

Factor

Second

s/Div

switch setting

Deflection

X Conversion

Factor

EXAMPLE:

Assume a

reference

signal

amplitude

of

30

volts,

a Volts/Div switch setting of

5 V

and

a

deflection

of

four

divisions. Substituting

these values

in the

Deflection

Conversion

Factor formula

(step

2):

30

V

(4)

(5

V)

1.5

6.

Measure the

horizontal

deflection in divisions

and

determine the

period by the

following formula:

Modified

horizontal

Period

=

Deflection

X deflection

Factor

(divisions)

Then, with

a Volts/Div switch setting of

2 V, the Modified

Deflection Factor

(step

5)

is:

(2

V)

(1.5)

=

3

volts/division

To determine the peak-to-peak

amplitude of an

applied

signal which produces

a

vertical

deflection of five

divisions

with

the above conditions,

use the Signal

Amplitude

formula

(step

6)

:

(3

V)

(5)

-

15 volts

SWEEP

RATE

1.

Apply a

reference

signal

of

known

frequency

to the

vertical

input connector. Using the

Seconds/Div

switch

and

Variable

Seconds/Div control,

adjust the display

so that

one

cycle of

the signal covers an exact number

of

horizontal

divisions.

Do

not change

the

Variable

Seconds/Div

control

after

obtaining

the

desired

deflection.

2. Divide the period

of

the reference

signal

(seconds)

by

the

product of the horizontal

deflection

in divisions

(estab-

lished

in step

1)

and the

setting

of

the

Seconds/Div

switch.

This is the

Deflection

Conversion

Factor.

Deflection reference signal

period (seconds)

Conversion

=

horizontal

Seconds/Div

Factor

deflection X

switch

(divisions)

setting

3. To determine the period of

an unknown

signal,

dis-

connect

the reference and apply the

unknown signal.

4. Set the

Seconds/Div switch to

a setting that

provides

sufficient horizontal deflection

to make

an accurate

meas-

urement.

Do not

readjust

the

Variable

Seconds/Div

control.

EXAMPLE: Assume a

reference signal

frequency of 455

hertz (period 2.2

milliseconds), a

Seconds/Div switch

setting

of

.2 ms,

and a

horizontal deflection of eight divi-

sions.

Substituting these

values in the Deflection

Conver-

sion

Factor

formula (step

2):

(8)

(0.2

ms)

Then,

with

a

Seconds/Div switch

setting of

50

jus, the Modi-

fied

Deflection

Factor (step

5)

is:

(50jus)

(1.375)

=

68.75

microseconds/division

To

determine the time period

of

an

applied signal

which

completes one

cycle in seven horizontal divisions, use

the

Period formula (step

6):

(68.75

jus)

(7)

-

481

microseconds

This product can

be converted to frequency by

taking the

reciprocal

of

the

period (see application on

Determining

Frequency).

Time Period

Measurement

To measure the

time (period) between two points

on

a

waveform, use the

following procedure:

1.

Connect

the signal to the vertical input

connector,

select either

AC

or

DC

input coupling, and set the

Volts/

Div

switch

to

display about four divisions

of

the

waveform.

2.

Set

the time-base triggering controls to

obtain

a

stable

display. Set the Seconds/Div

switch

to

the fastest

sweep

rate that will permit displaying one cycle

of the

waveform in less than eight divisions (some

non-linearity

may occur in the

first and last graticule divisions

of dis-

play).

Refer

to Fig.

2-4.

5.

To establish a

Modified

Deflection

Factor

at any

setting of

the Seconds/Div switch, multiply

the

Seconds/

3.

Adjust the

vertical

Position control

to move the

points between which

the time measurement

is made to the

2-7

Operating Instructions—

5103N

Fig.

2-4.

Measuring time

duration (period) between

points on

a

waveform.

Fig.

2-5.

Measuring risetime.

center horizontal line. Adjust the horizontal Position con-

trol

to center

the time-measurement

points

within the

cen-

ter eight divisions

of

the

graticule.

4. Measure

the

horizontal distance

between the time

measurement

points. Be sure

the Variable Seconds/Div con-

trol

is in the

Cal position.

5.

Multiply the

distance

measured in step 4 by the

setting

of the

Seconds/Div

switch.

EXAMPLE:

Assume

that the

horizontal distance

between the

time-measurement

points

is

five divisions and

the Seconds/Div

switch is set to .1

ms.

Using the

formula:

p

.

^

horizontal

distance

^

Seconds/Div

(divisions)

switch setting

=

(5)

(0.1

ms)

=

0.5 ms

The period is

0.5

millisecond.

Determining Frequency

The

time

measurement technique can also

be used

to

determine the frequency of

a

signal.

The frequency of

a

periodically recurrent signal is the reciprocal of

the time

duration

(period) of one cycle. Use the following

pro-

cedure:

1. Measure

the period of

one

cycle of

the waveform

as

described in the previous application.

2.

Take the reciprocal of

the

period

to determine

the

frequency.

EXAMPLE:

The frequency of

the signal shown

in Fig.

2-4,

which

has

a

period of

0.5 millisecond,

is:

1

1

Frequency

=

:

—- =

—

=

2 kilohertz

period

0.5

ms

Risetime

Measurements

Risetime

measurements employ

basically the

same tech-

niques

as

the

time-period

measurements. The main

differ-

ence

is the

points between

which the

measurement is made.

The following

procedure gives

the basic method

of

measuring risetime

between the 10%

and

90%

points

of the

waveform.

1

.

Connect

the signal to

the input connector.

2. Set

the Volts/Div

switch and Variable

Volts/Div con-

trol

to

produce a

display

an

exact number

of divisions in

amplitude.

3.

Center the display about the

center horizontal line

with the vertical

Position control.

4.

Set the time-base

triggering controls to obtain a

stable display.

Set the

Seconds/Div switch to the

fastest

sweep rate that will display less than eight divisions

be-

tween the

10% and

90%

points

on the waveform (see Fig.

2-5).

5.

Determine the

10% and

90%

points on the rising

por-

tion

of

the waveform. The figures given in Table

2-3

are for

10% up

from

the start

of

the

rising portion

and 10%

down

from

the topofthe rising

portion

(90%

point).

2-8

Operating Instructions—

51

03N

TABLE

2-3

Divisions of

display

10%

and 90%

points

Divisions

vertically

between

10%

and

90%

points

4

0.4

and

3.6

divisions 3.2

5

0.5 and 4.5

divisions 4.0

6

0.6

and 5.4

divisions 4.8

7

0.7 and 6.3

divisions 5.6

8

0.8

and 7.2

divisions 6.4

6.

Adjust the

horizontal Position

control to move the

10%

point

of the

waveform to

the second

vertical

line

of

the graticule.

For

example,

with

a

six-division

display, the

10%

point

would be 0.6

division

up

from

the start

of

the

rising portion.

Fig.

2-6.

Measuring

time difference

between

two pulses.

7.

Measure

the

horizontal

distance

between

the 10%

and

90%

points.

Be

sure

the

Variable

Seconds/Div

control is in

the

Cal

position.

8.

Multiply

the

distance

measured

in

step

7 by

the

setting

of the

Seconds/Div

switch.

EXAMPLE:

Assume

that

the

horizontal

distance

be-

tween the 10%

and

90%

points

is six

divisions

and

the

Seconds/Div

switch is

set

to

1

jus.

Using the

period

formula to

find risetime:

Risetime

_

horizontal

distance

Seconds/Div

period

(divisions)

setting

=

(6)

(Ijus)

=

0.6

microsecond

The risetime

is

0.6

microsecond.

Time

Difference

Measurements

When

used in

conjunction

with a calibrated

time-base

plug-in

unit, the

multi-trace

feature

of

the

5100-series oscil-

loscope

permits

measurement

of

time

difference

between

two or

more

separate

events. To

measure time

difference,

use

the following

procedure:

1.

Set

the

Input

Coupling

switches

of the

amplifier

channels to

either AC

or DC.

2.

Set

the Display

Mode

switch on

the time-base unit

to

either Chop

or Alt.

In

general, Chop is

more

suitable for

low-frequency

signals and

the Alt

position is

more suitable

for high-frequency

signals.

More

information on

deter-

mining the

mode is

given

under

Vertical Display

Mode in

this section.

3.

Set

the

Triggering

Mode switches

to

trigger

the dis-

play

on

Channel

1

(or

Left

Plug-in).

4.

Connect

the

reference

signal to

the

Channel 1

input

connector

and

the

comparison

signal to the

Channel 2

input

connector.

The

reference

signal

should

precede the

com-

parison

signal

in

time.

Use

coaxial

cables

or

probes

which

have

similar

time-delay

characteristics

to

connect

the

signal

to the

input

connectors.

5.

If

the

signals are

of

opposite

polarity, push the

Invert

button to

invert the Channel 2

display. (Signals may be

of

opposite

polarity due to

180°

phase

difference; if

so,

take

this

into

account in

the final calculation.)

6.

Set

the

Volts/Div switches to

produce about

four

divisions

of displayed

waveform.

7. Set

the time-base

triggering controls

for

a

stable dis-

play. Set the

Seconds/Div switch

for

a

sweep

rate

which

shows three

or more divisions

between the measurement

points,

if possible.

8.

Adjust

the vertical Position

controls

to

bring

the

measurement

points to the

center horizontal reference

line.

9.

Adjust

the

horizontal Position

control so the

Channel

1

waveform

(reference) crosses

the center

horizontal line at

a

vertical

graticule line.

10.

Measure the

horizontal distance

between the

two

measurement

points (see

Fig.

2-6).

2-9

Operating

Instructions—

51 03N

1

1 .

Multiply the measured distance

by the setting of

the

Seconds/Div switch.

EXAMPLE:

Assume

that

the

Seconds/Div

switch

is

set

to

50

jus

and the horizontal

distance

between

measurement

points is four

divisions.

Using the formula:

_

^

.

Seconds/Div

horizontal

distance

Time Delay

=

X

setting

(divisions)

=

(50

jus)

(4)

=

200

jus.

The time

delay is 200

microseconds,

i

Multi-Trace Phase Difference Measurement

Phase comparison between

two or

more signals of

the

same frequency can be made using a dual-trace plug-in

or

two single-trace plug-ins. This method

of

phase difference

measurement can be used up to the

frequency

limit of the

vertical

system.

To make the comparison,

use the

following

procedure:

1.

Set

the Input

Coupling switches of the amplifier

channels

to

either

AC

or

DC.

2.

Set the Display Mode switch on the time-base

unit

to

either Chop or

Alt. In

general. Chop

is

more

suitable for

low-frequency signals and the Alt position

is

more

suitable

for

high-frequency signals. More information

on deter-

mining

the mode is given under Vertical Display Mode

in

this section.

Fig. 2-7.

Measuring

phase difference.

7. Set the

time-base

triggering

controls

to

obtain

a

stable

display.

Set the

Seconds/Div

switch

to a sweep

rate

which

displays

about

one cycle of

the

waveform.

8. Move

the

waveforms

to the

center

of the

graticule

with

the

vertical Position

controls.

9.

Turn the

Variable Seconds/Div

control

until one

cycle of the reference

signal (Channel

1)

occupies exactly

eight

divisions

between the

second and tenth

vertical lines

of the

graticule

(see Fig. 2-7). Each

division of

the graticule

represents

45°

of

the

cycle

(360°

+

8 divisions

=

45°/

division).

The

sweep rate

can be stated

in terms of

degrees

as

45°/division.

3.

Set the

Triggering Mode switches

to trigger the

dis-

play on Channel

1

(or Left plug-in).

10.

Measure

the horizontal

difference

between

corres-

ponding

points on the

waveforms.

4.

Connect the

reference signal

to the Channel

1 input

connector

and the

comparison

signal to the Channel

2 input

connector.

The

reference signal should

precede the com-

parison signal in

time.

Use coaxial cables or

probes which

have similar time-delay characteristics to connect the

signals

to

the input connectors.

11.

Multiply

the

measured distance

(in

divisions) by

45 /division

(sweep rate)

to obtain

the

exact

amount

of

phase

difference.

EXAMPLE:

Assume a horizontal

difference of

0.6

divi-

sion with

a sweep rate of

45°/division

as shown

in Fig.

2-7.

Using the

formula:

5.

If

the

signals are of opposite polarity, push

the Invert

button

to

invert the Channel 2 display. (Signals

may be of

opposite polarity due to

180°

phase

difference; if

so, take

this into

account in the

final calculation.)

horizontal

Phase

Difference=

difference

X

(divisions)

sweep

rate

(degrees/

division)

6.

Set the Volts/Div

switches and the Variable

Volts/Div

controls

so

the displays are equal and about five

divisions in

amplitude.

=

(0.6)

(45°)

The

phase

difference

is

27°.

27°

2-10

Operating

Instructions—

5103N

Fig.

2-8.

High-resolution

phase-difference

measurement with in-

creased sweep rate.

High

Resolution

Phase

Measurements

More accurate

dual-trace

phase

measurements

can

be

made by

increasing

the

sweep

rate (without

changing the

Variable

Seconds/Div

control

setting). One

of the easiest

ways to

increase the

sweep

rate is

with the SWP MAG

(10X) button on

the

time-base

unit. The

magnified

sweep

rate is

automatically

indicated

by

the

knob-skirt scale-

factor

readout.

EXAMPLE:

If the

sweep

rate

were increased 10

times

with the

magnifier,

the

magnified

sweep rate

would be

45°/

division-^

10=

4.5°/division.

Fig.

2-8

shows the

same sig-

nals as

used in

Fig. 2-7,

but

with

the

SWP

MAG button

pushed in. With a

horizontal

difference

of

six

divisions, the

phase

difference is:

horizontal

magnified

Phase

Difference

=

difference

X sweep

rate

(divisions)

(degrees/division)

(6)

(4.5°)

=

27°

The phase

difference is

27°.

X-Y

Phase

Measurements

The

X-Y

phase

measurement

method can

also be used

to

measure the

phase

difference

between

two

signals

of the

same

frequency.

The

phase

angle is

determined

from the

Lissajous

pattern as

outlined

in

the

following

steps:

1.

Insert

an

amplifier

plug-in

unit into

one

of

the

verti-

cal

plug-in

compartments

and an

amplifier

of the

same

type

into the

horizontal

plug-in

compartment.

Fig.

2-9.

Phase

difference measurement from an X-Y

display.

2.

Connect a

signal to

the input

connector

of

each

plug-

in

and select the

desired input

coupling.

3.

Position

the display

to the

center

of

the

screen and

adjust

the Volts/Div

switches to

produce a

display six

divi-

sions

vertically

(Y) and six

divisions

horizontally (X).

4.

Center

the

display in relation to

the center

vertical

graticule line.

Measure the

distances A and

B

as

shown in

Fig.

2-9.

Distance

B

is

the vertical

measurement

between

the

two points

where the trace

crosses the center vertical

line. Distance A

is the

maximum vertical

amplitude

of the

display.

5.

Divide

B

by A

to

obtain the sine

of

the phase

angle

(T>)

between the

two signals. The

angle can then

be

obtained from a

trigonometric

table.

If

the display

appears

as a

diagonal

straight line, the

two signals

are either in

phase

(tilted upper

right to

lower

left),

or

180°

out

of

phase

(tilted

upper

left

to

lower right).

If the display is a

circle,

the

signals are

90°

out

of phase. Fig.

2-10

shows

the

Lissajous

displays produced

between

0°

and

360°.

Notice

that

above

180°

phase

shift, the

resultant display

is

the

same as at

some lower

angle.

EXAMPLE:

Assume a

display

as

shown

in Fig.

2-9

where A is

6

divisions and

B

is

0.4 division.

Using the

formula:

Sine

=

-

7

-

=

=

0.0660

A

6

From

the

trigonometric

tables

(or slide

rule):

$

=

arcsin 0.0660

=

3.78°

2-11

Fig.

2-10.

Phase of

a Lissajous display. (A)

0°

or

360°,

(B)

30°

or

330°,

(C)

90°

or 270°,

(D)

150°

or

210°,

and

(E)

180°.

2-12

SECTION

3

CIRCUIT

DESCRIPTION

5103N

Change

information,

if

any,

affecting this section will be found

at

the rear of this

manual.

Introduction

This section

of the

manual

contains an

electrical

description of the circuits in the 5103N Power

Supply/

Amplifier

unit, and

discusses their relationship

to the other

instruments comprising the Oscilloscope

System. An

overall

block diagram of the unit and

complete schematics

are

given on pullout pages

at

the back of this

manual.

BLOCK DIAGRAM

DESCRIPTION

Vertical signals

to be displayed on the

cathode-ray

tube

are applied

to the Interface circuit

from

both

vertical

plug-

in compartments. With single-beam

display units, the

Inter-

face circuit determines

whether the signal from

the left

and/or right vertical unit

is

displayed;

with dual-beam

units,

the

Interface circuit establishes the proper

routing

to asso-

ciate the left

vertical plug-in signal with the

upper

CRT

beam and right vertical plug-in

signal with the lower

CRT

beam. The Vertical Amplifier

circuit provides

intermediate

amplification between

the vertical plug-in

units and

the

deflection amplifiers

in the display unit.

Time-base and

external signals for horizontal display

on

the

CRT

are

connected to the

Interface

circuit

from

the

horizontal plug-in compartment. The

Horizontal

Amplifier

circuit provides

intermediate amplification between the

horizontal plug-in unit

and the

deflection amplifier

in the

display

unit.

Additionally, the

Interface circuit provides an

inter-

connection

of

logic

levels, time-base triggering signals,

display-related signals, and

power-supply voltages between

the plug-in units and the

display

unit.

The

Low-Voltage

Regulator

circuits provide the voltage

necessary

for operation

of

the

oscilloscope system. These

voltages are

connected to all circuits

within the instrument.

Also

included in

this circuit is the

Calibrator, which

pro-

duces

a

square-wave output

with accurate amplitude

at a

repetition rate

of twice the power-line frequency. This out-

put

signal is useful

for calibration and

probe compensation,

and is available at

the front

panel of the display unit.

INTERFACE

General

The Interface circuit provides

an

interconnection

of

signals, logic levels,

and power-supply

voltages between

plug-in

units and the oscilloscope

mainframe.

It incorpo-

rates

circuits that determine

the vertical

display

mode and

amplify the

vertical and horizontal

display

signals.

Func-

tions

of

interconnections

not

discussed

are labelled

on the

I nterface

diagram.

Clock

Generator

The Clock

Generator

stage

produces

a 200-kilohertz

timing

signal (clock) for

chopping

between

vertical

plug-ins

and amplifier

channels

within the

plug-ins.

This

circuit

consists of

Q620,

Q626,

and their

associated

passive com-

ponents,

which are

connected

as

a multivibrator.

When the

multivibrator

receives

a chop

actuate level

(+5 volts), it free

runs

at a 200-kilohertz

rate.

(The chop

actuate level is

routed

through

the

vertical

plug-ins

to the

time-base unit,

and

is present

at

contact

A20

of

J603 when

a

multi-trace

display

is required

and

the

time-base

Display

switch

is set to

Chop.)

The chop

actuate level

also

disables

Q630,

locking

out

alternate-drive

pulses.

The

Clock

Generator

has two

outputs;

one is

sent to the

Countdown

circuit

as

a

timing

signal, and

the other

is

sent to the

CRT circuit

in the

dis-

play

unit

to blank the

chop-switching

transients.

Countdown

Circuit

The

Countdown

produces the

display

switching

signal

for

both

the Alternate

and Chopped

switching

modes.

This

circuit

is composed of

U640

and its

discrete

passive compo-

nents, which are

connected

as a pair of

RS flip-flops.

Each

flip-flop

is

a divide-by-two

counter,

and the first

one drives

the

second. The Countdown

Circuit

is activated by

a

negative-going

transition,

which can

come from either the

Clock

Generator or

from the

time-base

plug-in unit

via

grounded-base

amplifier

Q630.

The

Clock

Generator input

results in

chopped-mode

vertical switching.

The

input

from

the time-base

unit coincides

with the

end of each sweep,

and

results in alternate-mode

vertical

switching. The

output

from

the divide-by-two

portion of the

Countdown

Circuit

(U640A-U640B) is sent

via contacts

B21

of

J601

and

J602

to the channel-switching

circuits

incorporated within dual-

trace vertical plug-in

units. The

outputs

from

the divide-by-

3-1

Circuit

Description—

5103N

four portion

of

the

Countdown Circuit (U640C-U640D) are

used

for

plug-in

switching; one output is sent to contact

A15

of

J604

to produce

plug-in switching on the single-

beam-display

auxiliary board, and the other output is sent

via contact

B21

of

J603

to

produce dual-sweep

switching in

dual time-base

units. The

vertical

mode

switching

sequence

and some of the

display combination possibilities are

fully

discussed under

General Operating

Information

in the

Operating I nstructions

section of

this manual.

Auxiliary Boards

Because

switching

between plug-ins

is

required for

simul-

taneous

viewing of

displays

on

single-beam

cathode-ray

tubes and not

required

for

use with dual-beam cathode-ray

tubes, an

auxiliary board is

supplied

with each display unit

to

provide the correct

signal-routing function.

An auxiliary

board plugs into

J604

on the Interface circuit board,

and

becomes part

of the Interface circuit. The single-beam

auxiliary

board

accepts

the push-pull signal outputs from

both

vertical plug-ins. Emitter

followers

Q701,

Q703,

Q711,

and

Q713

provide

a

high-impedance

input to two

pairs of grounded-gate FET amplifiers,

Q702-Q704

and

Q712-Q714.

The

switching circuit consists of Q721

and

Q722,

connected as a

comparator. Plug-in

“on'' logic levels

are applied

to

the switching circuit in addition to the

switching signal

from the Countdown Circuit. The

switching circuit permits

only one pair of amplifiers

to be

on

at a

time, thus

permitting only one of the two vertical

plug-in signals to pass

to the Vertical Amplifier. In the

chopped switching mode, the

switching between pairs of

amplifiers occurs at a

50-kilohertz rate (switching occurs on

both the negative-

and positive-going transition), and in

the

alternate mode, switching

occurs at the end

of

every second

sweep.

If

no “on"

logic level is applied to the switching

circuit

from either vertical plug-in, Q702 and Q704 will

remain on, passing

any signal

from

the left vertical plug-in.

The

dual-beam

auxiliary

board has

no switching circuit.

It routes

the signal

from the left vertical

plug-in to the

Vertical

Amplifier circuit on the Interface circuit board,

and amplifies the

signal from the right vertical plug-in.

The

amplifier circuit on

the dual-beam auxiliary board is identi-

cal

to

the Vertical

Amplifier

which

is discussed next, and

consists

of

Q701,

Q702, Q711,

and Q712. The output of

this amplifier is sent

directly to the lower-beam deflection

amplifier in the display

unit.

Vertical

Amplifier

The Vertical

Amplifier circuit provides

approximately

10X

amplification of the vertical signal before passing it

to

the vertical deflection

amplifier in the display

unit. The

Vertical

Amplifier consists of

Q650, Q658, Q660, Q668,

and their associated

passive components, connected in

a

differential configuration.

The output signal is in

phase

with the output

of the vertical plug-in.

Horizontal

Amplifier

The

Horizontal

Amplifier

consists of

Q670, Q678,

Q680,

Q688,

and

their

associated

passive

components.

The

circuit

is nearly

identical

to the

Vertical

Amplifier

just

described.

It

receives

a push-pull

input

directly

from

the

horizontal

plug-in compartment

via contacts

A7, A13,

B7,

and

B13

of

J603.

The two

halves of

this amplifier

are

balanced

in the

quiescent condition

by adjustment

of

R675,

Horiz

Cent.

The output of

the

Horizontal

Amplifier

is sent

to the

horizontal

deflection

amplifier

in the

display

unit.

POWER SUPPLY

General

The

Power

Supply

circuit

provides

the

low-voltage

operating

power for

the oscilloscope

system from

three

regulated

supplies and

three

unregulated

supplies.

Elec-

tronic

regulation

is used

to provide

stable,

low-ripple

out-

put

voltages.

The circuit also

includes

the calibrator

circuit

to

produce an

accurate

square-wave

output.

Power

Input

Power

is applied

to the primary

of transformer

T801

through

the

display

unit (fuse

F201, thermal

cutout

S200,

and Power

switch

S201),

and the line-selector

block, P810.

The

line-selector

block allows changing

the

primary -winding

taps of

T801 to

fit

different

line requirements.

Low-Voltage

Rectifiers

and

Unregulated Outputs

The

full-wave bridge

rectifiers

and associated filter

com-

ponents in

the secondaries of

T801 provide filtered

DC

voltages for

operation of the

oscilloscope

system or for

regulation

by the

Low-Voltage

Regulators.

The

unregulated

outputs

are +200 volts, +38

volts,

and

—38

volts.

The

+205-volt and

+38-volt

outputs to the

display unit are fuse-

protected

by F810 and F835

respectively.

Low-Voltage

Regulators

-30-Volt

Supply.

The

-30-Volt

Supply,

besides

pro-

viding

power

to

circuitry

throughout

the

instrument,

provides

a

reference-voltage

source

to

establish

operating

levels

for the

feedback

regulators

in the

+30-Volt

and

+5-Volt

supplies.

The regulator

for

the

-30-Volt

Supply is

a

feedback

amplifier

system which

operates

between

ground

and the

unregulated

-38

volts.

Current

to the load

is delivered

by the

series-pass

transistor,

Q860,

and the

supply

voltage

is

established

by the

drop

across

R877,

R878,

and

R879.

The

feedback

path

is through

R875,

Q875,

and

Q865 to the

base of

Q860.

Any variation

in

output

voltage

due

to ripple,

change

of

current

through

the

load,

etc., is

immediately

transmitted

to

the base

of

Q860

and

nullified

by

a change

in

Q860 conduction,

thus

main-

3-2

Circuit

Description—

5103N

taining

a steady output.

The output of the supply

is set to

exactly

—30

volts by adjustment

of

R878,

—30

V Adj. This

control sets the

conduction

of

Q870,

which controls the

bias levels

of Q865 and Q860.

CR865 and

Q865

provide

short-circuit

protection by

limiting

the current through

Q860.

+30-Volt Supply.

The

regulator

for

the

+

30-Volt

Supply

consists

of series-pass

transistor Q840 and

error

amplifier

Q850.

This is a

feedback

amplifier system

similar to that

just

described

for the

-30-Volt

Supply.

R858,

+30 V Adj,

provides

an

adjustment to

set

the output of the

supply at

exactly

+30 volts.

Q845

protects

the supply in the event

the output is

shorted by

limiting the current demanded

from the

series-pass

transistor

under excessive

load. During

normal operation,

Q845

is biased

off.

+5-Volt Supply.

The

regulator

for the

+5-Volt

Supply

consists of

series-pass

transistor Q815

and error

amplifier

Q820.

Operation

of this

feedback

amplifier system is

similar to

that

described

for the

-30-Volt Supply.

The

short-protection

transistor,

Q825,

functions as

described

for

Q845

in the

+30-Volt Supply.

Line Trigger

A

line-frequency

signal

is

obtained

from

the

secondary

of

T801

and

attenuated

by R830,

R832,

and R834 to

pro-

vide a

line-trigger

source

for

the

time-base

plug-in unit.

CRT Heater Windings

Two separate secondary windings are

provided

for

the

CRT

writing-gun heaters

and the flood-gun heaters. The

writing-gun heaters are elevated

to

—3500

volts in the

CRT

circuit (display unit)

to maintain a potential near that of

the

CRT cathode.

Calibrator

The

Calibrator circuit

composed

of

Q885, Q890,

and

their

associated

passive

components

produces

a

square-wave

output

with accurate amplitude and

at

a

rate of twice the

power-line frequency. This output is available

at

the probe

test loop on the display unit

front

panel

as a

4-milliampere

(peak to peak) square-wave

current, or

as a

400-millivolt

(ground to peak) square-wave voltage.

The

resistive-capacitive

network

at the

base of

Q885

receives

a

pulsating

DC voltage

from

full-wave

rectifier

CR835-CR836

and

produces

a

nearly

symmetrical

switching

signal

for

Q885

and

Q890.

As

Q890

is

alternately

switched

on

and

off

at twice

the

line

frequency,

current

through

R890

is

alternately

switched

through

the

transistor

or

through

CR890,

the

probe

test loop,

and

R891,

pro-

ducing

the

required

test

signal.

3-3

NOTES

5103N

SECTION

4

SYSTEM

MAINTENANCE

Change

information,

if any,

affecting this section

will

be found at

the

rear of the

manual.

Introduction

This

section

of

the

manual

applies to all

instruments

in

the

5100-series

oscilloscope

system,

including display units

and plug-in

units. It

contains

information

for preventive

maintenance,

troubleshooting,

obtaining

replacement

parts,

and replacing

components

and

sub-assemblies.

5100

Panel

Removal

Dangerous

potentials

exist at

several points through-

out the

oscilloscope.

When

the instrument must

be

operated

with the

cabinet

panels

removed, do not

touch

exposed

connections

or

components. Some

transistors

have voltage

present on

their cases. Dis-

connect

power

before

cleaning the

instrument or

replacing parts.

The

cabinet

panels

of the

5100-series

oscilloscope are

held in

place

by

slotted

fasteners. To

remove

the panels,

turn each

fastener

counterclockwise

a

quarter turn

with a

large

screwdriver,

coin,

or

similar

device. Then

the panels

can

be lifted

away.

The

instrument

should be

operated with

the

panels in

place to

protect the

interior

from dust,

and to

eliminate

shock

hazard.

PREVENTIVE

MAINTENANCE

General

Preventive

maintenance,

consisting

of cleaning,

visual

inspection,

etc.,

performed on

a

regular

basis,

will improve

the

reliability

of the

oscilloscope.

Periodic

checks of the

semiconductor

devices

used

in

the system

are not

recom-

mended

as a

preventive

maintenance

measure.

See

semiconductor-checking

information

given

under

trouble-

shooting. A

convenient

time

to

perform

preventive

main-

tenance is

preceding

instrument

calibration.

Cleaning

Avoid

the

use

of

chemical

cleaning

agents

which

might

damage

plastic

parts.

Avoid

chemicals con-

taining

benzene,

toluene,

xylene, acetone,

or similar

solvents.

Exterior.

Loose

dust may

be removed

with

a

soft cloth

or a

dry brush.

Water

and mild detergent may

be used;

however,

abrasive cleaners

should not

be used.

Interior. Cleaning the interior

of the

unit

should

pre-

cede calibration, since the

cleaning process could alter the

settings

of

the

calibration adjustments. Use

low-velocity

compressed air to

blow off

the accumulated dust.

Hardened

dirt

can

be removed

with

a

soft,

dry

brush, cotton-tipped

swab, or cloth

dampened with a water and mild detergent

solution.

Calibration

To

ensure accurate measurements, the

performance

of

individual units comprising

the 5100-Series Oscilloscope

should be

checked periodically. Complete

calibration

instructions

are given in the manuals

for each unit.

The calibration

procedure can be helpful in

isolating

major

troubles in a unit. Moreover,

minor troubles

not

apparent during

regular operation may be

revealed and

corrected during

calibration.

TROUBLESHOOTING

General

The

following is

provided to augment

information con-

tained

elsewhere in this

and

in

other manuals when

trouble-

shooting the

5100-Series

Oscilloscope or its plug-in

units.

The

schematic diagrams,

circuit description

and calibration

sections

should be

used to full advantage.

The circuit

des-

cription

sections

give detailed

information about

circuit

behavior and output

requirements.

Troubleshooting Aids

Diagrams. Circuit

diagrams are

given on foldout

pages

in

the

diagram

section

of each

individual manual. The

circuit

number

and electrical value

of

each

component in this

in-

strument system

are

shown on the

diagrams (see

first page

4-1

System Maintenance—51 03N

of each diagram section for definition of

the reference

designators used to

identify

components in each unit). Each

main circuit is assigned a series

of

component

numbers.

Important

voltages and

waveforms

are also shown

on

the

diagrams. The portions of the

circuits mounted

on

circuit

boards are enclosed with blue lines.

Cam Switch

Contact Identification.

Cam switches

shown

on

the diagrams are coded to indicate the

position of

the contact

in

the complete

switch

assembly

counting from

the front, or knob end of the

switch,

toward the

rear. The

contact closure chart

given

on the

diagrams

indicates when

each

contact is

closed.

Circuit

Boards.

Pictures

of

the circuit

boards

are

shown

in the

diagram

sections.

These

pictures

are

located

near

their

respective

associated

schematic

diagrams

to

aid in

cross

reference

between

the

diagrams

and

the

circuit

board

pictures.

Where

applicable,

circuit

boards

are

identified

by

assembly

numbers,

which

are

used

on the

diagrams

and

in

the

parts

lists

to aid

in locating

the

boards.

Each

electrical

component

on the

boards

is

identified

by its

circuit

number.

The

circuit

boards

are also

outlined

on the

dia-

grams with

a blue

line

to show which

portions

of the

circuit

*

are

located

on a

circuit board.

Component

and Wiring

Color

Code.

Colored

stripes

or

dots

on

resistors

and

capacitors

signify

electrical

values,

tolerances,

etc.,

according

to the EIA

standard

color code.

Components

not color

coded usually

have

the

value

printed

on

the body.

WARNING

This

color

code

applies

to leads

within

the

5100-

Series

Oscilloscope

system

only.

Color

code of

the

AC

power

cord is:

Black

Line

White

Neutral

Green

with

a yellow

stripe

Safety

Earth

(ground)

Fig. 4-1.

Electrode

configuration

data

for

semiconductor

devices.

4-2

System

Maintenance—

51 03N

Semiconductor

Lead

Configuration.

Fig.

4-1

shows the

lead

configuration

of the

semiconductor

devices

used in this

instrument.

Multi-Connector

Holders.

The

multi-connector

holder

is

keyed

with two

triangles,

one

on

the

holder and

one on

the

circuit

board.

When a

connection

is

made

perpendicular to

a

circuit

board

surface,

the

orientation

of the

triangle

and

the

slot

numbers

on

the

connector

holder is

determined

by

the

direction

of the

nomenclature

marking (see

Fig.

4-2).

Troubleshooting

Equipment

The

following

equipment

is

useful

for

troubleshooting

the

5100-Series

Oscilloscope

and its

plug-in units:

1.

Semiconductor

Tester

Description:

Dynamic-type

tester.

Purpose:

To

test

the

semiconductors

used

in this in-

strument

system.

Recommended

type:

Tektronix

Type

576

Transistor

Curve T

racer

or

equivalent.

2.

Multimeter

Description:

VTVM,

10-megohm

input

impedance

and 0

to 300

volts

range,

AC

and DC;

ohmmeter, 0

to

50

megohms.

Accuracy,

within 3%.

Test

probes

must be

insulated

to

prevent

accidental

shorting.

Purpose: To

check

voltages

and for

general

trouble-

shooting

in

this

instrument

system.

NOTE

A 20,000

ohms/volt

VOM

can

be

used

to

check the

voltages

in this

instrument

if allowances

are

made

for the

circuit

loading

of the

VOM

at

high-

impedance points.

3.

Test

Oscilloscope

Description:

Frequency

response,

DC to 2

megahertz

minimum;

deflection

factor,

1

millivolt/division to

5

volts/division. A

10X,

10-megohm

voltage

probe

should be

used to

reduce

circuit

loading for

voltage

measurements.

Fig.

4-2. Multi-connector

holder

orientation.

Troubleshooting

Techniques

This troubleshooting

procedure

is

arranged

in an

order

which checks the simple trouble

possibilities before pro-

ceeding with extensive

troubleshooting. When a defective

component is

located,

it

should be replaced

following

the

replacement

procedure given under Component Replace-

ment.

1.

Check

Control

Settings.

Incorrect

control

settings

can

indicate a

trouble

that

does not

exist.

If there is

any

question

about the

correct

function

or

operation

of any

control,

see

the

operating

instructions

section

of

the

manual

for

the

instrument

involved.

2.

Check

System and

Associated

Equipment.

Before

proceeding

with

troubleshooting

of the 5100

system,

check

that the

instruments in

the system are

operating

correctly.

Check for proper

interconnection

between the

display

unit

and the

power

supply/amplifier unit.

Check

that the

signal

is

properly

connected

and that

the

interconnecting

cables

or

signal source

are

not defective.

Also,

check the

power

source. The

associated

plug-in

units

can

be

checked

for

proper

operation

by

substituting

other units

which are

known to

be

operating

properly

(preferably of the

same

types),

or by

interchanging

plug-in units

within

the

5103N.

If the

trouble

persists

after

substitution,

the

oscilloscope

mainframe is

probably at

fault.

3. Visual

Check.

Visually

check the portion

of

the

in-

strument in

which the trouble is

suspected. Many

troubles

can be

located by

visual indications

such as unsoldered

con-

nections,

broken wires,

damaged circuit

board, damaged

components, etc.

Purpose:

To

check

operating

waveforms in this

instrument.

4-3

System

Maintenance—

51 03N

4.

Check

Instrument

Calibration.

Check

the

calibration

7. Check

Individual

Components.

The

following

of

the

5100-Series

Oscilloscope

and

its

associated

plug-ins,

methods

are provided

for

checking

the

individual

compo-

or check

the affected

circuit if

the

trouble

appears

in one

nents

in the

5100-series

instrument

system.

Components

circuit.

The apparent

trouble

may only be

a

result of

mis-

which

are

soldered

in

place

are best

checked

by

discon-

adjustment

or may be

corrected

by calibration.

Complete

necting

one

end,

isolating

the

measurement

from

the effects

calibration

instructions

are given

in the calibration

section

of

surrounding

circuitry,

of

the

manual

for

each

instrument

in the system.

5. Isolate

the Trouble

to a Circuit.

To isolate

trouble

to

a

particular

circuit, note

the trouble

symptom.

The

symptom often identifies

the circuit

in which

the trouble

is

located.

For example,

poor focus

indicates

that the CRT

circuit (includes high-voltage

supplies)

is probably

at fault.

When

trouble symptoms

appear in more than

one

circuit,

check affected

circuits by taking

voltage and

waveform

readings.

Incorrect operation

of all circuits often

indicates

trouble

in the power

supply. Check first for

correct

voltage of

the

individual

supplies. However,

a defective

component

else-

where in

the instrument can appear

as a power-supply

trouble

and

may also

affect

the operation of

other

circuits.

Table

4-1

lists the tolerances of the

power

supplies

in

this

instrument. These

voltages are measured

between

the

power-supply

test points and ground

on the Power

Supply

circuit board

(see

Fig.

5-1

in the calibration

section of

this

manual for

test point locations). If

a power-supply

voltage

is within

the listed tolerance, the

supply can be

assumed

to

be working

correctly.

If

outside the

tolerance, the

supply

may

be

misadjusted or operating

incorrectly. Use

the pro-

cedure given

in the calibration section

to adjust the power

supplies.

TABLE

4-1

Power Supply Tolerances

Power Supply Tolerance

Typical

Ripple

+205

V

+

180

V

to +240 V

3

V

or

less

+30 V +29.85 V

to +30.15 V

3

mV

or less

+5

V +4.9 V

to

+5.1 V

2 mV

or less

-30

V

-29.925

V

to

-30.075

V

2 mV

or less

6. Check Voltages and Waveforms.

Often the defective

component can be located by checking for

the correct

voltage or waveform in the circuit. Typical voltages

and

waveforms

are

given

on

the diagrams.

NOTE

Voltages

and waveforms

given on the

diagrams

are

not

absolute

and may vary slightly

between

instru-

ments.

To obtain operating

conditions

similar

to

those

used to take these

readings,

see

the first

diagram

page.

A. TRANSISTORS

and INTEGRATED

CIRCUITS

Power

switch

must be

turned off

before

removing

or

replacing

semiconductors.

A good check

of

transistor

operation

is actual perfor-

mance

under

operating

conditions.

A transistor

can

most

effectively

be

checked

by substituting

a

new

component for

it

(or one which

has

been checked

previously).

However, be

sure

that

circuit

conditions are

not such

that

a replacement

transistor

might also be

damaged.

If

substitute

transistors

are

not available,

use a dynamic

tester.

Static-type

testers

are

not recommended,

since they do

not check

operation

under

simulated

operating

conditions.

A suction-type de-

soldering

tool must be

used

to remove

soldered-in

transis-

tors;

see

component

replacement

procedure

for details.

Integrated

circuits

can be

checked

with

a voltmeter,

test

oscilloscope,

or

by direct

substitution.

A good

under-

standing

of

the circuit

description

is essential

to

trouble-

shooting

circuits

using IC's.

Operating

waveforms,

logic

levels,

and

other

operating

information

for

the

IC's are

given

in

the circuit

description

section

of the

appropriate

manual.

Use

care

when

checking

voltages

and waveforms

around

the IC's

so

that

adjacent

leads

are not

shorted

to-

gether.

A

convenient

means of

clipping

a test probe

to the

14—

and 16—

pin

in-line IC's

is with

an

integrated-circuit

test

clip.

This device

also

doubles

as an

extraction

tool.

B. DIODES

A diode

can be checked

for

an open or shorted

con-

dition

by

measuring

the resistance

between

terminals.

With

an

ohmmeter

scale having

an internal

source of between

800

millivolts

and

3

volts,

the resistance

should

be very

high

in one

direction

and very low

when

the

leads

are

reversed.

Do not

use an ohmmeter that has

a high internal

current. High

currents may damage

the diode.

4-4

System

Maintenance—51

03N

C. RESISTORS

Check the

resistors

with

an

ohmmeter. Resistor toler-

ance

is given in

the

Electrical

Parts List. Resistors normally

do not

need

to

be

replaced

unless the

measured value varies

widely

from the

specified

value.

D.

CAPACITORS

A

leaky or

shorted

capacitor can

be detected by

check-

ing

resistance

with

an

ohmmeter on the

highest scale. Use

an

ohmmeter

which

will

not

exceed

the voltage rating of

the

capacitor. The

resistance

reading should

be

high after

initial charge

of the

capacitor. An open

capacitor

can

best

be

detected

with

a

capacitance meter,

or

by

checking

whether the

capacitor passes

AC signals.

8.

Repair and

Readjust the Circuit. Special techniques

required to replace

the components

in this

unit

are given

under Component

Replacement. Be

sure to check the per-

formance of

any

circuit

that has been repaired or that has

had

any

electrical

components replaced. Calibration of the

affected circuit may

be necessary.

REPLACEMENT PARTS

Standard Parts

All electrical and

mechanical part replacements for

the

5100-series oscilloscope

system can be obtained through

your local

Tektronix Field Office or representative. How-

ever, many

of

the

standard electronic components

can be

obtained

locally in

less time than is required

to

order

them

from

Tektronix, Inc.

Before purchasing

or ordering replace-

ment parts,

check

the

parts lists for value,

tolerance, rating,

and description.

NOTE

When selecting replacement parts, it is important

to

remember that the

physical size

and shape

of

the

component may

affect its performance

in the instru-

ment. AH

replacement parts should be direct replace-

ments unless it is

known that

a

different

component

will not

adversely affect the instrument performance.

Special Parts

Some

parts

are

manufactured or

selected by Tektronix

to

satisfy

particular

requirements, or are

manufactured

for

Tektronix to

our

specifications. These special

parts are

indicated in

the parts

list by an

asterisk preceding the part

number.

Most of the

mechanical parts used

in this system

have been manufactured

by Tektronix. Order all special

parts directly

from your

local

Tektronix Field Office or

representative.

Ordering

Parts

When

ordering

replacement parts from Tektronix,

Inc.,

refer to the Parts Ordering

Information and

Special Notes

and Symbols on the

page

immediately

preceding

each elec-

trical parts list section. Include

the

following

information:

1

.

Instrument

Type

(5103N, DIO,

5A15N, etc.)

2. Instrument Serial Number

3. A description of the part (if electrical,

include the

circuit number)

4.

Tektronix Part Number

COMPONENT

REPLACEMENT

General

The

exploded-view

drawings

associated with the mech-

anical

parts lists

(pullout

pages) may be

helpful when

disassembling

or

re-assembling individual components or

sub-assemblies.

Circuit

Board Replacement

If

a circuit

board is damaged beyond repair, either the

entire assembly including all soldered-on components, or

the board only, can be replaced.

Part

numbers are given in

the mechanical parts lists for either the completely

wired

(670

prefix) or the

unwired board

(388

prefix).

NOTE

Even though unwired

boards are available without

components, use of the completely

wired replace-

ment board is recommended due to the large number

of

components mounted on most of the

boards.

To remove or replace a board,

proceed as

follows:

1.

Disconnect

all

leads connected to the board (both

soldered

lead connections

and solderless

pin connections).

2.

Remove all

screws holding

the

board

to the chassis

or

other mounting

surface.

Some

boards

may

be held fast by

plastic

mounting clips

around the board

edges (for

example,

the

H.V.

board

in the

display modules).

For these,

push the

mounting clips

away from the circuit board edges to free

the board. Also,

remove any

knobs,

etc., that

would pre-

vent the

board from being lifted out

of

the

instrument.

3.

Lift the

circuit board out

of

the unit. Do not

force or

bend the

board.

System Maintenance—51 03N

4. To replace the

board, reverse the order of

removal.

Use care when replacing pin

connectors; if forced

into place

incorrectly

positioned,

the

pin connectors may be damaged.

Transistor and

Integrated Circuit

Replacement

Transistors and IC's

should

not

be

replaced unless they

are actually

defective. If removed from their

sockets

during

routine maintenance,

return them to

their

original sockets.

Unnecessary replacement

or switching of

semiconductor

devices

may

affect the calibration

of

the instrument.

When

a transistor is replaced,

check

the operation of the part of

the

instrument

that

may

be affected.

POWER switch must be turned off before

removing

or replacing semiconductors.

Replacement semiconductors should be of

the original

type or a direct replacement. Fig.

4-1

shows

the lead

con-

figuration of the semiconductors used in

this instrument

system. When

removing soldered-in

transistors,

use a

suction-type

de-soldering tool

to

remove

the solder from

the holes

in

the circuit board.

An extracting tool

should be used

to remove the

14—

and 16—

pin

integrated circuits

to

prevent damage

to the

pins. This tool

is

available from Tektronix,

Inc. Order Tek-

tronix Part No.

003-0619-00.

If an extracting

tool

is not

available, use care to avoid damaging the

pins. Pull slowly

and

evenly on both ends

of

the 1C.

Try to avoid having one

end of

the 1C disengage

from

the socket before

the other

end.

To replace one of the power transistors mounted

on the

chassis adjacent to the

Power

Supply circuit

board, first

unsolder

the

leads.

Then,

loosen

the nuts on

the plastic bar

that clamps the transistor to the chassis.

Remove

the

defective

transistor. When

replacing

the transistor,

use sili-

cone grease on the metal tab to increase

heat transfer

from

the

transistor to the chassis.

Interconnecting Pin

Replacement

NOTE

A pin

replacement

kit including necessary

tools,

instructions,

and

replacement pins is available from

Tektronix

,

Inc.

Order

Tektronix Part No.

040

-

0542

-

00

.

To replace

a

pin

which

is mounted

on a circuit

board,

first

disconnect

any

pin connectors.

Then, unsolder

the

damaged

pin and pull it out of

the board with

a

pair of

pliers.

Be

careful

not to damage

the wiring

on the board

with

too much heat.

Ream out the

hole in

the circuit board

with

a 0.031-inch drill.

Remove the

ferrule from

the new

interconnecting

pin and

press the new

pin into the hole

in

the

circuit board.

Position the

pin in the

same manner

as

the old

pin. If the old

pin

was

bent

at an angle

to mate

with

a

connector, bend the new

pin to match the

associated pins.

Switch Replacement

The

following

special maintenance

information

is

pro-

vided

for

the cam-type

switches and

pushbutton

switches

used

in

this instrument

system.

Repair of cam-type

switches

should be

undertaken

only

by experienced

maintenance

personnel. Switch

alignment

and

spring tension of

the

contacts must be

carefully

maintained for

proper

operation of

the

switch.

For assistance

in maintenance of

the cam-type

switches,

contact

your local Tektronix

Field Office

or

representative.

A.

CAM-TYPE

SWITCHES

NOTE

A cam-type

switch repair kit

including

necessary

tools,

instructions,

and replacement

contacts is avail-

able from

Tektronix,

Inc. Order

Tektronix

Part No.

040

-

0541

-

00.

The

cam-type

switches

consist

of

rotating

cam

drums

which are turned

by

front-panel

knobs, and

sets

of spring-

leaf contacts

mounted on

adjacent

circuit boards. The

contacts are actuated by lobes

on the cams. In the

5100-

Series

Oscilloscope system, the Volts/Div and

Seconds/Div

switches are of the

cam type. These switches can be dis-

assembled for

inspection, cleaning,

repair, or replacement

as

follows:

1. Remove

the screws

which

hold

the metal cover on

the switch, and

lift the cover off

the

switch.

The

switch

is

now

open for

inspection or cleaning.

2.

To completely remove a

switch

from

the circuit

board,

first remove

any

knobs

or shaft

extensions. Loosen

the

coupling at the

potentiometer at the rear

of the

switch,

and

pull the long shaft (with red knob

attached)

out

of the

switch

assembly.

4-6

System Maintenance—

51 03N

3.

Remove

the

screws

(from the

opposite

side of the

circuit

board)

which hold the

cam

drum to the

board.

4.

To

remove

the cam

drum

from the

front support

block,

remove the

retaining

ring

from the

shaft

on

the front

of the

switch

and slide

the cam

drum

out

of the support

block.

Be

careful not to lose the

small

detent roller.

5.

To

replace

defective

switch contacts,

follow

the in-

structions

given in the

switch repair

kit.

6.

To

re-install

the

switch

assembly, reverse the above

procedure.

B.

PUSHBUTTON

SWITCHES

The

pushbutton

switches are

not

repairable and should

be

replaced as a

unit

if defective.

Use a suction-type

de-

soldering

tool to

remove solder

from the holes in

the circuit

board when

unsoldering the

switches.

Cathode-Ray

Tube

Replacement

The

following

procedure

outlines the

removal and

re-

placement

of the

cathode-ray

tube.

Refer

to

Fig.

4-3.

WARNING

I

Use care

when

handling a CRT.

Protective

clothing

and safety

glasses

should be

worn.

Avoid striking it

on any

object

which

might cause

it

to

crack or im-

plode. When

storing a CRT,

place it

in a

protective

carton or set

it face

down in a

protected

location on a

smooth

surface

with a

soft mat under

the

faceplate

to

protect it

from

scratches.

A.

REMOVAL:

1.

Remove

the

bezel

assembly,

which

is held

in

place

with

two screws.

(The

bezel

assembly

includes

a

snap-in

implosion

shield.)

2.

For

storage

CRT's

(Dll,

D13),

disconnect the

storage-element

cable

connector

from the

Storage

circuit

board.

For

dual-beam

CRT's

(D12, D13),

disconnect de-

flection leads

from neck

pins.

NOTE

The red

and

black wires

entering the

CRT

shield are

connected to

the

trace-rotation

coil

inside

the shield.

Fig.

4-3.

Replacing

the cathode-ray

tube.

They will not hamper CRT

removal and need not be

unsoldered.

3.

Remove the CRT base

cover on the rear panel

of

the

instrument.

4.

Remove

the CRT base

socket.

5. Loosen the CRT clamp.

The

CRT and neck

portion

of the

shield will be

removed as a unit,

and

to

facilitate

removal, it may

be best

to remove all

hardware

from the

CRT

clamp

(bracket

and positioning

screws, and clamp-

tightening

hardware).

6.

With one

hand

on the

CRT

faceplate, push

on

the

CRT base

(and

neck shield). Slide the

CRT and

neck

shield

forward, and at the same

time feed

the

storage-element

4-7

System

Maintenance—51

03N

cable through the slot

in

the main portion of

the CRT

shield.

Pull

the CRT out of the instrument from the front,

then remove the

neck shield.

B.

REPLACEMENT:

1.

Slide the

neck shield

onto the

CRT neck.

2. Make

sure

the soft plastic CRT faceplate

supports are

in

place, then insert the CRT into the main shield while

feeding

the storage-element

cable through the slot

in the

shield. Before the

CRT

is

completely inserted, slide the

CRT clamp

over the neck shield.

3. With the

CRT fully inserted and loose in the shield,

mount the bezel assembly into place

and tighten

the bezel

screws.

4.

Mount

the

CRT clamp and positioning hardware,

temporarily

leaving it loose.

5. Position the rear

of

the

CRT (socket end) so there

is

no tilt

of the faceplate in

relation to the bezel assembly.

Tighten the positioning

screws, then tighten the

clamp

hardware.

6.

Place the CRT base

socket onto

the CRT base

pins.

Replace

the

cover.

If applicable,

connect the storage-

element

cable to the

pin

connectors on the Storage circuit

board, and

connect the

deflection leads to

the CRT neck

pins.

7.

Replacing

the CRT

will require

partial instrument

recalibration.

Refer to the

calibration

section of the display

unit manual.

Neon Bulb

Replacement

To replace

the

knob-skirt

deflection-factor readout

bulbs,

proceed as

follows:

1.

Remove the light

shield.

2.

Unsolder

the defective

bulb,

and

install

its

replacement.

3. Replace

the light

shield.

Power Transformer

Replacement

Replace

the power transformer

only with

a direct

replacement Tektronix

transformer.

After the

transformer

has been

replaced, check

the power

supply output

voltages

as outlined

in the calibration

section of this

manual.

Also,

check

the CRT

operation as

outlined in the

calibration

section

of the display

unit manual.

Fuse

Replacement

Table 4-3

gives the rating,

location, and

function of the

fuses used

in this

instrument system.

TABLE

4-1

Circuit

Number

Rating Function

Location

F20, F206

1/16 A

Fast Input

Protection

5A20N/5A21N

circuit board

F201

1

.6

A

Fast

Line-Voltage

Input

Display

unit

rear panel

F810

0.25

A

Fast

+205

V

Unreg

supply

5103N

Power

Supply board

F835

0.5 A Fast

+38

V

Unreg

supply

5103N

Power

Supply

board

RECALIBRATION

AFTER REPAIR

After any electrical component

has

been replaced,

the

calibration of that particular circuit should be

checked,

as

well

as the calibration of other closely related circuits. The

Performance

Check instructions in each manual

provide

a

quick and

convenient means of checking the instrument

operation.

4-8

SECTION

S

CALIBRATION

5103N

Change information, if any, affecting

this

section

will be

found

at the

rear of the manual.

Introduction

Before complete

calibration, thoroughly

clean and

in-

spect this instrument as

outlined in the Maintenance

section

of this manual.

NOTE

This procedure facilitates

checking

and adjusting the

Low-Voltage Power Supply ONLY. For complete

oscilloscope

mainframe calibration (plug-in interface,

deflection amplifiers, CRT circuits, etc.), refer

to

the

calibration procedure given in the manual

for

the dis-

play unit.

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.

Equipment

Required

For power-supply

calibration, proper loading must be

established to

ensure correct

operation and regulation of

the low-voltage

supplies. For

best results, the 5103N should

be operated with a

display unit and plug-in units because

this provides

actual

operating-condition loads

for

the

supplies.

For measurement

of the supply

voltages,

a

precision DC

voltmeter is required.

The

voltmeter must have an accuracy

of within

±0.1%,

and a

measurement range from about

—35

volts to

+250

volts. For

example, a

Fairchild Model

7050

Digital Multimeter, a

Tektronix 7D13 Digital

Multimeter

(operated

with

a

Tektronix

7000-Series Readout Oscillo-

scope), or any

DC

voltmeter meeting the

listed require-

ments may be

used.

Preliminary

Procedure

NOTE

The

performance

of this

instrument can be

checked

at any

temperature

within

the

0° C

to +50° C range.

Make any

adjustments at a

temperature

of

+25°

C,

±5°

C.

a.

Remove

the bottom dust

cover of

the 5103N

to gain

access

to the power

supply circuit

board. If

necessary,

set

the line-selector

block

in accordance

with

the line

voltage

source to be

used

(see Section

2,

Operating

Voltage,

in this

manual for

complete

instructions).

b.

Connect the

5103N to the

line voltage

source.

Turn

the Intensity

control on the display

unit

counterclockwise

and pull

the Power switch

out

to turn the

instrument

on.

Location

of the power-supply

test

points and calibration

adjustments

is

shown

in Fig. 5-1.

Table

5-1

shows the

tolerances

of the low-voltage

supplies.

TABLE

5-1

Supply

Tolerance

-30

V

-29.925

V

to

-30.075

V

+5

V

+4.9 V

to

+5.1

V

+30 V

+29.85

V

to

+30.15 V

+205

V

+

180

V

to

+240

V

Fig.

5-1.

Locations

of power-supply test

points and adjustment

controls.

5-1

Calibration—

51 03N

1 .

Power

Supply

Checks

a.

Connect

the

precision

DC

voltmeter

between

each

low-voltage

test

point

and

ground.

b.

CHECK—

Each

supply is

within the

tolerance

listed in

Table

5-1

.

2.

Power

Supply

Voltage

Adjustments

a. Connect the

precision

DC

voltmeter

between

each

test

point

(—30 V and

+30 V) and ground.

b.

ADJUST—

R878,

-30

V ADJ,

and

R858,

+30

V

ADJ,

respectively, for voltmeter

readings of exactly 30

volts.

This completes the

Power

Supply

calibration

for

the

5103N.

/

5-2

®I

5103N

SECTION

6

RACKMOUNTING

Change

information,

if any,

affecting this

section

will be

found

at

the

rear of the

manual.

Introduction

The

R5100-Series

Oscilloscope

is designed

for operation

in a

standard

19-inch

wide

rack

which

has

Universal,

EIA,

RETMA, or

Western

Electric

hole

spacing. When

properly

mounted,

this

instrument

will meet

all

electrical and envi-

ronmental

specifications

given in

Section 1

.

Instrument

Conversion

The

5100-Series

Oscilloscope

can

quickly be converted

from

a

bench

model to a

rackmount

model, or vice versa.

Field

conversion

kits,

including

the

necessary tools,

parts,

and

instructions

are

available

from

Tektronix, Inc.

Order:

040-0583-00,

Bench-to-rack

conversion;

040-0584-00,

Rack-to-bench

conversion.

Mounting

Method

This

instrument

will fit

most

19-inch

wide

racks whose

front and

rear holes

conform

to

Universal

hole spacing.

The

slide-out

tracks

easily

mount to

the

cabinet

rack front

and

rear

vertical

mounting

rails

if the

inside distance

between

the front

and rear

rails is

within

10-9/16

inches

to

24-3/8

inches.

If the

inside

distance

exceeds

24-3/8

inches, some

means

of

support is

required

for

the

rear ends

of the slide-

out

tracks (for

example,

make

extensions

for the

rear

mounting

brackets).

Rack

Dimensions

Height.

At least

5-1/4

inches

of

vertical space

is required

to

mount

this

instrument

in a

rack. If other

instruments

are

operated

in

the

rack, an

additional

1/4

inch is

required both

above

and

below the

R5100

to

allow space

for proper cir-

culation

of cooling

air.

Width. A

standard

19-inch

wide

rack

may

be used. The

dimension

of

opening

between the

front

rails

must be at

least

17-5/8

inches

for

a

cabinet in

which the front

lip of

the

stationary

section is

mounted

behind an

untapped front

rail as

shown in

Fig.

6-1

A.

If the

front

rails are

tapped,

and

the

stationary

section

is

mounted

in

front

of the

front rail

as

shown in

Fig.

6-2B,

the

dimension

between

the front

rails

should

be at

least

17-3/4

inches.

These

dimensions

allow room on

each

side

of the

instrument

for

the

slide-out

tracks to

operate so

the

instrument

can

move freely in

and

out

of

the

rack.

Depth.

For

proper

circulation

of cooling air,

allow at

least

two inches

clearance

behind the rear of

the instrument

and

any

enclosure

on the

rack. If it is

sometimes

necessary

or

desirable

to operate

the R5100

in the

fully extended

position,

use

cables that

are long

enough to reach

from the

signal source

to the

instrument.

Installing

the Slide-Out

Tracks

General

Information. The

slide-out tracks for the instru-

ment consist

of two assemblies, one

for the left side

of the

instrument

and one for the

right side. Each assembly con-

sists

of three sections. A

stationary section attaches to the

front

and rear rails

of the rack, the chassis section

attaches

to the

instrument (and is

installed at the factory), and the

intermediate section

fits between the other two sections

to

allow the instrument to

fully extend out of the

rack.

The

small hardware components

included with the

slide-

out track assemblies

are used to mount the

tracks

to

the

vertical rack rails having this

compatibility:

1.

Front

and rear

rail holes must be large

enough to

allow inserting a

10-32

screw through the rail mounting

hole if the rails are untapped (see

Fig.

6-1A).

2.

Or, front and rear rail

holes must be tapped to

accept

a

10-32

screw

if Fig.

6-1 B

mounting method is used.

Note

in

Fig.

6-1 B

right illustration

that

a #10

washer (not sup-

plied) may be added to

provide increased bearing

surface

for

the

slide-out

track stationary section front

flange.

3.

Front and rear rail

holes must be located on

Universal

spacing; that is,

the sequence for the hole spacing is 1/2

inch, 5/8 inch, 5/8

inch,

1/2 inch, etc.

Because of the

above compatibility, there

will

be

some

small parts

left over. The

stationary and

intermediate

sec-

tions

for both

sides

of

the

rack are

shipped

as a

matched

set

and should not

be

separated. The

matched

sets

of both

sides

including

hardware are

marked

351-0195-00

on

the

package. To

identify the

assemblies, note

that the

auto-

matic latch

and intermediate

section stop is

located

near

the top

of

the

matched set.

Mounting

Procedure. Use

the

following

procedure

to

mount both

sides.

See

Fig.

6-1

for

installation

details.

6-1

Rackmounting—

51

03N

Fig.

6-1.

Mounting the left

stationary

section

(with its

matched intermediate section, not shown

in illustrations

A

and B) to

the rack rails.

1. To mount the instrument directly

above or below

another

instrument in a cabinet

rack,

select the appropriate

holes in the front

rack

rails

for

the stationary sections,

using Fig.

6-2

as a

guide.

2.

Mount

the

stationary slide-out

track sections to the

front rack

rails

using

either of these

methods:

(a) If the front

flanges of the stationary sections are to

be mounted behind

the front rails (rails are countersunk or

not tapped), mount

the stationary sections as

shown

in Fig.

6-1A right

illustration.

(b) If

the front

flanges of the stationary

sections are to

be

mounted in

front of

the

front

rails (rails are tapped for

10-32

screws),

mount the stationary

sections

as

shown

in

Fig.

6-1 B right illustration.

To provide

increased bearing

surface for

the screw head

to securely fasten

the

front

flange to the rail,

a flat washer

(not supplied)

may

be added

under

the screw head.

Flowever,

consider that when this

mounting method

is used, the front panel will

not fit flush

against the front rail

because of the stationary

section and

washer

thickness. If

a flush fit is preferred, method

2

(a)

should

be used.

3.

Mount the stationary slide-out

sections to

the rear

rack

rails

using

either of

these

methods:

(a) If the rear

rack

rail holes are not tapped to accept

10-32

machine screws, mount the left stationary section

6-2

Rackmounting—

51

03N

RACK

RAIL

TYPES

19.125 ±0.062

uu

U

<

Wv-wi'

Fig.

6-2.

Dimensional diagram.

Rackmounting—

51

03N

with hardware

provided

as

shown

in the left or center

illustration of

Fig.

3-1

A. Note

that the rear mounting

bracket can be

installed

either way so the slide-out tracks

will fit

a deep

or

shallow cabinet

rack.

Use Fig. 3-1A

as a

guide for mounting

the right

stationary section. Make sure

the

stationary sections

are horizontally aligned so they are

level and

parallel with

each other.

(b)

If the rear

rack rail

holes are tapped to accept

10-32

machine

screws,

mount the

left stationary section with

hardware

provided as

shown in the

left

or center

illustration

of

Fig.

6-1 B.

Note

that

the rear mounting

bracket

can

be

installed

either

way so the

slide-out tracks

will

fit a deep or

shallow cabinet

rack. Use

Fig.

6-1 B

as a

guide for mounting

the

right

stationary

section.

Make sure the

stationary

sec-

tions

are

horizontally

aligned so they are

level and parallel

with each other.

R5100

Installation

and

Adjustment

To

insert

the

instrument

into the

rack,

proceed

as

follows:

1.

Pull the

slide-out

track

intermediate sections

out to

the

fully

extended

position.

2.

Insert

the instrument chassis sections

into the inter-

mediate

sections.

3.

Press the stop latches

on the

chassis sections

and push

the instrument

toward the

rack until the latches snap

into

their holes.

4.

Again

press

the stop latches and

push the instrument

into the rack.

To

adjust

the slide-out tracks for

smooth sliding

action,

loosen the screws used

to join the stationary

sections to the

rails of the rack.

Center the instrument,

allowing the slide-

out tracks to seek the

proper width, then

tighten the

screws.

Maintenance

The slide-out tracks

require no lubrication.

The special

dark

gray finish on the sliding

parts is a permanent

lubri-

cation.

6-4

PARTS LIST ABBREVIATIONS

BHB

binding head brass

BHS

binding head steel

cap.

capacitor

cer

ceramic

comp

composition

conn

connector

CRT

cathode-ray

tube

csk

countersunk

DE

double end

dia

diameter

div

division

elect.

electrolytic

EMC

electrolytic,

metal cased

EMT

electrolytic,

metal tubular

ext

external

F &

1

focus and

intensity

FHB

flat head brass

FHS

flat head

steel

Fil HB

fillister head

brass

Fil HS

fillister head

steel

h

height

or high

hex.

hexagonal

HHB

hex

head

brass

HHS

hex

head

steel

HSB

hex socket

brass

HSS

hex

socket

steel

ID

inside

diameter

inc

incandescent

int internal

ig length or long

met.

metal

mtg hdw mounting

hardware

OD outside diameter

OHB

oval head brass

OHS oval

head steel

P/O part of

PHB

pan head brass

PHS

pan head steel

piste plastic

PMC paper, metal cased

poly polystyrene

prec precision

PT

paper, tubular

PTM

paper

or plastic, tubular,

molded

RHB

round head brass

RHS

round

head steel

SE

single end

SN

or S/N

serial

number

S

or SW

switch

TC

temperature

compensated

THB

truss head

brass

thk

thick

THS

truss head

steel

tub.

tubular

var

variable

w

wide

or

width

WW

wire-wound

PARTS ORDERING

INFORMATION

Replacement

parts are available from

or

through

your local Tektronix, Inc. Field

Office

or representative.

Changes

to Tektronix instruments are sometimes

made to

accommodate improved

components as

they become available, and

to give you the benefit of the latest circuit

improvements developed

in our engineering

department. It is therefore important, when

ordering

parts,

to

include the following information in your order: Part number,

instrument

type

or number,

serial

or

model number, and modification

number if applicable.

If

a

part you have

ordered

has been replaced with

a

new

or

improved

part, your

local

Tektronix, Inc. Field Office or representative will contact

you concerning any change

in part number.

X000

00 X

*

000

-

0000-00

Use

000-0000-00

SPECIAL NOTES AND

SYMBOLS

Part first added

at

this serial

number

Part removed after this

serial number

Asterisk

preceding

Tektronix Part

Number indicates manufactured

by

or for Tektronix, Inc., or reworked

or

checked

components.

Part number

indicated is direct

replacement.

TYPE

5103N

SECTION 7

ELECTRICAL

PARTS

LIST

Values are

fixed

unless

marked

Variable.

Tektronix

Serial/Model No.

Ckt. No.

Part No.

Eff

Disc

Description

CHASSIS

Transistors

Q815

151-0331-00

Silicon NPN

G.E.

Type

M

U"

case

Selected

D40C5

Q840

151-0331-00

Silicon

NPN G.E.

Type

"U" case

Selected

D40C5

Q860

151-0331-00

Silicon

NPN G.E.

Type

"U"

case Selected

D40C5

Transformer

T801

*120-0692-00 B010100

B049999

Power

115

V

T801

*120-0704-00

B050000

Power

115 V/230

V

A1

INTERFACE

Circuit

Board Assembly

*670-1340-00

Complete

Board

Capacitors

Tolerance

±20%

unless

otherwise

indicated.

C622

283-0032-00

470

pF

Cer

500

V 5%

C628

283-0060-00

100

pF

Cer

200 V 5%

C632

283-0002-00

0.01

yF

Cer

500 V

C634

283-0060-00

100

pF

Cer

200 V

5%

C636

283-0060-00

100

pF

Cer

200 V 5%

C640

281-0519-00

47

pF

Cer

500 V

10%

C642

281-0519-00

47

pF

Cer

500 V

10%

C659

283-0000-00

0.001

yF

Cer

500 V

C671

281-0593-00

B010100

B029999X

3.9

pF

Cer

10%

C679

283-0000-00

0.001

yF Cer

500

V

7-1

ELECTRICAL

PARTS LIST-TYPE

5103N

A1 INTERFACE

Circuit

Board

Assembly

(cont)

Ckt.

No.

Tektronix

Serial/Model

No.

Part

No.

Eff

Disc

Description

Semiconductor

Device,

Diodes

CR620

*152-0185-00

Silicon

Replaceable

by

1N4152

CR658

*152-0185-00

Silicon

Replaceable

by 1N4152

CR668

*152-0185-00

Silicon

Replaceable

by 1N4152

CR678

*152-0185-00

Silicon

Replaceable

by 1N4152

CR688

*152-0185-00

Silicon

Replaceable

by 1N4152

Connectors

J601 131-1078-00

Receptacle,

electrical,

28/56

contacts

J602 131-1078-00

Receptacle,

electrical,

28/56

contacts

J603

131-1078-00

Receptacle,

electrical,

28/56

contacts

J604

131-1043-00

Receptacle,

electrical,

18/36

contacts

Transistors

Q620

151-0190-00

Silicon

NPN

TO-92

2N3904

Q626

151-0190-00

Silicon

NPN

TO-92

2N3904

Q630

151-0341-00

Silicon

NPN

TO-

106 2N3565

Q650

*151-0192-00

Silicon

NPN

TO-92 Replaceable

by

MPS6521

Q658

151-0220-00

Silicon

PNP

TO-18

2N4122

Q660

*151-0192-00

Silicon

NPN

TO-92 Replaceable by

MPS652

Q668

151-0220-00

Silicon PNP

TO-

18 2N4122

Q670

*151-0192-00

Silicon

NPN

TO-92 Replaceable by MPS6521

Q678

151-0220-00

Silicon

.

PNP

TO- 18 2N4122

Q680

*151-0192-00

Silicon

NPN

TO-92 Replaceable by MPS6521

Q688

151-0220-00

Silicon PNP

TO-18 2N4122

Resistors

Resistors are

fixed,

composition,

±10%

unless otherwise

indicated.

R620

316-0102-00

1 kft

1/4

W

R621

316-0222-00

2.2

kQ

1/4

W

R622

315-0223-00

B010100

B029999

22

kfi

1/4

W

5%

R622

315-0163-00

B030000

16 kO

1/4

W

5%

R626

316-0102-00

1

kft

1/4

W

R628

315-0223-00

B010100

B029999

22 kti

1/4

W

5%

R628

315-0183-00

B030000

18 ktt

1/4

W

5%

R630 316-0474-00

470 kfi

1/4

W

R631

316-0332-00

3.3

kll

1/4

W

7-2

ELECTRICAL

PARTS

LIST-TYPE

5103N

A1

INTERFACE

Circuit Board

Assembly (cont)

Tektronix

Serial/Model

No,

Ckt.

No. Part

No.

Eff

Disc

Description

Resistors

(cont)

R632 315-0273-00

27 ka

1/4 W

5%

R634 316-0103-00

10 ka

1/4

W

R635 316-0102-00

1 ka

1/4

W

R636

316-0103-00

10

ka

1/4

W

R637

316-0102-00

1 ka

1/4

W

R640

316-0562-00

5.6 ka

1/4 W

R641

316-0561-00

560 a

1/4

W

R642

316-0103-00

10 k

fl

1/4 W

R643 316-0102-00

1

ka

1/4 W

R650

315-0393-00

39 ka

1/4

W

5%

R651 316-0103-00

10

ka

1/4 W

R652 315-0273-00

27

kfi

1/4

W

5%

R656 321-0222-00

2 ka

1/8

W

Prec

1%

R657

315-0822-00

8.2

ka

1/4 W

5%

R659 316-0101-00

100

ft

1/4 W

R660

315-0393-00

39

kfi

1/4 W

5%

R662 315-0273-00

27

ka

1/4

W

5%

R665

321-0159-00

442

a

1/8

w

Prec

1%

R666

321-0222-00

2

ka

1/8

W

Prec

1%

R667 315-0822-00

8.2

ka

1/4

W

5%

R669 316-0101-00

100 a

1/4 W

R670

315-0393-00

39

ka

1/4 W

5%

R671

316-0331-00

330 a

1/4

W

R672

315-0223-00

22 ka

1/4 W

5%

R675

311-1133-00

10

ka, Var

R676

321-0222-00

2 ka

1/8 W

Prec

1%

R677

315-0822-00

8.2

ka

1/4

W

5%

R679

316-0101-00

ioo

a

1/4

W

R680

315-0393-00

39 ka

1/4

W

5%

R681

316-0331-00

330 a

1/4 W

R682

315-0223-00

22 ka

1/4

W

5%

R685

321-0159-00

442 a

1/8

W

Prec

1%

©

7-3

ELECTRICAL

PARTS

LIST-TYPE 5103N

Ckt.

No.

A1

INTERFACE Circuit

Board

Assembly (cont)

Tektronix Serial/Model No.

Part No.

Eff Disc

Description

R686

R687

Resistors (cont)

321-0222-00

315-0822-00

2

k

fl 1/8

W Prec 1%

8.2 kO

1/4

W

5%

U640

156-0057-00

Integrated Circuit

Quad 2-input

NAND

gate w/open coll.

Replaceable by

T.I.

SN7401N

A2

POWER SUPPLY Circuit Board Assembly

*670-1339-00

Complete

Board

Capacitors

Tolerance ±20%

unless

otherwise

indicated.

C810

290-0511-00

250

yF

Elect.

250

V

+75%-10%

C815

290-0510-00

6000

yF

Elect

.

15 V

+100%-10%

C820

290-0134-00

22

yF Elect. 15

V

C822

281-0512-00

27

pF Cer

500 V

10%

C830

285-0629-00

0.047

yF PTM 100 V

C837

290-0509-00

3000

yF

Elect. 50 V

+100%-10%

C839

290-0509-00

3000

yF

Elect. 50

V

+ioo%-io%

C842

290-0175-00

10

yF

Elect.

35 V

C852

281-0550-00

120

pF

Cer

500 V

10%

C857

283-0003-00

0.01

yF

Cer 150

V

C860

290-0175-00

10

yF Elect

.

35

V

C865

281-0550-00

B010100

B039999

120

pF Cer

500 V

10%

C865

281-0543-00

B040000 270

pF Cer

500 V

10%

C870

290-0134-00

22

yF

Elect

.

15

V

C872

281-0572-00

6.8

pF Cer

500 V ±0.5

pF

C875

283-0003-00 0.01

yF

Cer

150 V

C881

290-0267-00

1

yF

Elect.

35 V

C883

290-0267-00

1

yF

Elect. 35 V

C890

281-0549-00

68

pF

Cer

500 V

7-4

©

ELECTRICAL PARTS

LIST-TYPE

5103N

A2

POWER

SUPPLY Circuit

Board

Assembly

(cont)

Tektronix

Serial/Model No.

Ckt. No.

Part No.

Eff

Disc

Description

Semiconductor

Device,

Diodes

CR810

*152-0107-00

Silicon

Replaceable by

1N647

CR811

*152-0107-00

Silicon

Replaceable by

1N647

CR812

*152-0107-00

Silicon

Replaceable by

1N647

CR813

*152-0107-00

Silicon

Replaceable by

1N647

CR815

152-0488-00

Silicon

Rectifier

Bridge

200 V,

1.5 A

CR820

152-0066-00

Silicon

IN319

4

CR824

152-0141-02

Silicon

1N4152

CR835

*152-0107-00

Silicon

Replaceable

by 1N647

CR836

*152-0107-00

Silicon

Replaceable

by

1N647

CR837

152-0488-00

Silicon

Rectifier Bridge

200 V,

1.5 A

CR841

152-0066-00

Silicon

1N3194

CR842

152-0066-00

Silicon

IN319

4

CR850

*152-0185-00

Silicon

Replaceable by

1N4152

CR851

*152-0185-00

Silicon

Replaceable by

1N4152

CR860

152-0066-00

Silicon

IN

319

4

CR865

152-0141-02

Silicon

1N4152

CR870

*152-0185-00

Silicon

Replaceable by

1N4152

CR875

*152-0185-00

Silicon

Replaceable

by

1N4152

CR885

*152-0185-00

Silicon

Replaceable

by

IN415

2

CR890

152-0141-02

Silicon

1N4152

VR850

152-0357-00

Zener

1N983B

400

mW, 82

V, 5%

VR865

152-0243-00

Zener

1N965B

400

mW, 15

V, 5%

VR870

152-0227-00

Zener

1N753A

400

mW,

6.2V,

5

F201

159-0003-00

Fuses

1.6

A

3AG

Slo-Blo

F810

159-0028-00

1/4

A

3

AG

Fast-Bio

F835

159-0025-00

1/2

A

3AG

Fast-Bio

Transistors

Silicon

NPN TO-106

2N3565*

Silicon

NPN TO-106

2N3565

Silicon

NPN TO-106

2N3565

Silicon

NPN TO-92

2N3904

Q820

151-0341-00

Q825

151-0341-00

Q845

151-0341-00

Q850

151-0190-00

7-5

ELECTRICAL

PARTS

LIST-TYPE

5103N

A2

POWER

SUPPLY

Circuit

Board

Assembly

(cont)

Ckt.

No.

Tektronix

Part

No.

Serial/Model

No.

Eff

Disc

Description

Transistors

(cont)

Q865

151-0341-00

Silicon

NPN

TO-

10

6

2N3565

Q870

151-0220-00

Silicon

PNP

TO-

18

2N4122

Q875

151-0301-00

Silicon

PNP

TO-

18 2N2907

Q885

151-0341-00

Silicon

NPN

TO-

106 2N3565

Q890

151-0341-00

Silicon

NPN

TO-

106

2N3565

Resistors

Res

is tors

are

fixed, composition,

±10%

unless

otherwise

indicated.

R810 302-0150-00

15 ft

1/2

W

R812

304-0683-00

68 kft

1

W

R815 308-0685-00

1.5 ft

1 W

WW

R816 321-0215-00

1.69 kft

1/8 W

Prec

1%

R818

321-0289-00

10 kft

1/8

W

Prec

1%

R820

315-0473-00

47 kft

1/4

W

5%

R822

316-0681-00

680 ft

1/4

W

R824 316-0822-00

8.2 kft

1/4

W

R826

315-0101-00

100

ft

1/4

W

5%

R827

315-0242-00

2.4 kft

1/4

W

5%

R830 315-0104-00

100

kft

1/4

W

5%

R832 315-0473-00

47

kft

1/4

W

5%

R834

315-0183-00

18 kft

1/4 W

5%

R841

307-0300-00

150

ft

10 W

5%

R842

308-0686-00

2.2 ft

1 W

WW

5%

R846 316-0391-00

390

ft

1/4 W

R847 315-0183-00

18

kft

1/4

W

5%

R850

316-0823-00

82

kft

1/4

W

R851

302-0333-00

33 kft

1/2

W

R852 316-0681-00

680

ft

1/4

W

R853 315-0103-00

10 kft

1/4

W

5%

R857 321-0268-00

6.04

kft

1/8

W

Prec

1%

R858 311-1120-00

100

ft, Var

R859 321-0268-00

6.04

kft

1/8 W Prec

1%

R860 308-0686-00

2.2

ft

1

W

WW

5%

7-6

ELECTRICAL

PARTS

LIST-TYPE

5103N

Ckt.

No.

A2 POWER

SUPPLY

Circuit

Board

Assembly

(cont)

Tektronix

Serial/Model

No.

Part

No.

Eff

Disc

Description

Resistors

(cont)

R861

307-0301-00

120

n

10 W

5%

R863

316-0273-00

27

kfi

1/4 W

R865 315-0131-00

B010100

B039999

130

n 1/4

W

5%

R865 315-0301-00

B040000

300

fi

1/4 W

5%

R867 315-0621-00

620

n

1/4 W

5%

R868

315-0101-00

ioo n

1/4

W

5%

R869

315-0392-00

3.9 kft

1/4

W

5%

R870

315-0562-00

5.6 kfi

1/4

W

5%

R872

316-0221-00

220 kft

1/4

W

R873

316-0102-00

1

kft

1/4

W

R875

315-0101-00

100

Q

1/4 W

5%

R877

321-0256-00

4.53 kft

1/8

W

Prec

1%

R878 311-1124-00

250 Var

R879

321-0202-00

1.24 kft

1/8 W

Prec

1%

R880 316-0272-00

2.7 kfi

1/4

W

R881

315-0562-00

5.6

kft

1/4

W

5%

R883 316-0102-00

l k

n

1/4

W

.

R885

316-0153-00

15 kfl

1/4

W

R890

322-0686-03

7.23 kft

1/4

W

Prec

1/4%

R891 321-0097-03

100 n

1/8 W

Prec

1/4%

7-7

5103N

T"

SECTION

8

DIAGRAMS

AND CIRCUIT

BOARD

ILLUSTRATIONS

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

(juF).

Resistors

=

Ohms

(£2)

Symbols

used

on the

diagrams

are

based on USA

Standard Y32.

2-1967.

Logic

symbology

is

based

on

Ml L-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.

Connection

soldered

to

circuit

board.

Connection

made to

circuit

board with

interconnecting

pin.

Blue

tint

encloses

components

located

on

circuit

board.

v^DNiriQuIt;

board.

The following

prefix

letters

are used as

reference

designators to

identify

components

or

assemblies

on the

diagrams.

A

Assembly,

separable

or

repairable

(circuit

board, etc.)

AT

Attenuator,

fixed

or

variable

B

Motor

BT

Battery

C

Capacitor,

fixed

or

variable

CR

Diode,

signal

or

rectifier

DL

Delay line

DS

Indicating

device

(lamp)

F

Fuse

FL

Filter

H

Heat

dissipating

device

(heat

sink,

heat

radiator, etc.)

HR

Heater

J

Connector,

stationary

portion

K

Relay

L

Inductor,

fixed or

variable

LR

Inductor/resistor

combination

M

Meter

Q

Transistor

or

silicon-controlled

rectifier

P

Connector,

movable

portion

R

Resistor,

fixed

or

variable

RT

Thermistor

S

Switch

T

Transformer

TP Test

point

U

Assembly,

inseparable

or

non-repairable

(integrated

circuit, etc.)

V

Electron

tube

VR

Voltage

regulator

(zener

diode, etc.)

Y

Crystal

8-1

SECTION

8

DIAGRAMS

DISPLAY UNIT

TO

UPPER BEAM

DEFL

AMP

TO LOWER

BEAM

DEFL AMP

>

TO

CRT

CIRCUIT

TO

HORIZ

DEFL

AMP

>

FROM

POWER INPUT

>

>

TPROBE TEST

|

LOOP

L

DISPLAY UNIT

n

5I03N

BLOCK

DIAGRAM

BLOCK

DIAGRAM

5103N

INTERFACE

BOARD

PARTS

LOCATION

GRID

TO

VERTICAL

DEFLECTION

AMPLIFIER

PORTION

OF

H.V.

BOARD

(SEE

DISPLAY

UNIT

MANUAL)

TO

HORIZONTAL

DEFLECTION

AMPLIFIER

PORTION

OF

H.V.

BOARDfSEE

DISPLAY

UNIT

MANUAL)

0701

+

VERTICAL

OUTPUT

-

VERTICAL

OUTPUT

RIGHT

+

SIGNAL

IN

TRACE.

REPARATION H

RIGHT

-

SIGNAL

IN

-

30V

+ VERTICAL

OUTPUT

LEFT

+ SIGNAL

IN

+

5V

+

SOV

+

3ov-

IB

>>—

»>—

e

TRACE

SEPARATION

.+

SOV

-SOV.

-

30V

A2

(p/o

DIO/DI

I

)*

Single

Beam

N

JG04

r

rn

T

—

TTTTYn

+

5V

A2

(P/O

012/ D

13)*

Dual

Beam

note:

* DIAGRAMS

ARE PRESENTED

HERE FOR

CONVENIENCE.

PARTS LIST,

BOARD

PHOTOS,

AND COMPONENT

LOCATION

GRIDS LOCATED

IN

THE

DISPLAY UNIT

MANUALS.

VERTICAL

OUTPUT

VERTICAL

OUTPUT

VERTICAL

OUTPUT

LEFT

SIGNAL

IN

3

ov

AUXILIARY

B0ARDS<2>

AUXILIARY

BOARDS

5103N

POWER

SUPPLY

BOARD

PARTS

LOCATION

GRID

POWER

SUPPLY

&

CALIBRATOR

FIGURE AND INDEX

NUMBERS

Items in this section are referenced

by figure and index numbers to the illustrations

which appear on the

pullout pages immediately following the Diagrams section of this

instruction manual.

INDENTATION SYSTEM

This mechanical parts list is indented to indicate

item relationships. Following is an

example of

the indentation system used in the Description

column.

Assembly and

/or

Component

Detail Part of Assembly

and/or Component

mounting hardware for

Detail Part

Parts of Detail Part

mounting hardware for Parts of Detail

Part

mounting hardware for Assembly and/or Component

Mounting hardware always appears in the same indentation

as

the item it mounts,

while the detail parts are indented to the right. Indented items are

part

of, and

included

with, the next higher indentation.

Mounting hardware must be purchased separately, unless

otherwise specified.

PARTS ORDERING INFORMATION

Replacement parts

are available from or through your local

Tektronix,

Inc.

Field Office

or

representative.

Changes to

Tektronix

instruments are sometimes made to

accommodate improved

components as

they become available,

and

to give

you

the benefit of the latest

circuit

improvements

developed in

our

engineering department. It is therefore

important, when

ordering

parts, to include the following information in your order: Part number,

instru-

ment type or

number, serial or model number, and modification

number

if

applicable.

If a

part you have ordered has been replaced

with

a new

or improved part, your

local Tektronix,

Inc. Field

Office

or

representative will contact

you

concerning any change

in part

number.

Change

information, if any, is located at

the rear of this manual.

ABBREVIATIONS AND

SYMBOLS

For

an explanation

of the abbreviations and symbols used

in this section, please

refer

to

the

page

immediately

preceding

the

Electrical Parts List in this

instruction manual.

SECTION 9

MECHANICAL

PARTS LIST

FIGURE 1 EXPLODED

& STANDARD ACCESSORIES

TYPE

5103N

Fig.

&

Index

Tektronix

No. Part

No.

Q

Serial/Model

No.

t

Eff

Disc

y

12345

Description

1-1

670-1340-00

388-1899-00

-2

131-0589-00

-3 131-1043-00

-4 131-1078-00

-5 136-0269-00

-6

214-1593-02

-7 386-1938-00

-8

210-0777-00

-9 213-0146-00

-10

670-1339-00

388-1898-00

-11

131-0608-00
131-0589-00

-12

200-0293-00

-13

200-0294-00

B010100

200-0294-00

B043670

-14

214-0579-00

-15

344-0154-00

-16

211-0504-00

-17

-18

352-0198-00

-19

131-0622-00

-20

212-0516-00

B010100

212-0522-00

B050000

-21

166-0226-00

B010100

166-0457-00

B050000

-22

220-0410-00

-23

200-0772-02

-24

333-1425-00

-25

343-0315-00

-26

210-0407-00

B043669

B049999

B049999

1

CIRCUIT BOARD ASSEMBLY—INTERFACE

A1

circuit

board

assembly includes:

1

CIRCUIT BOARD

12 TERMINAL, pin, 0.50 inch long

1 CONNECTOR,

receptacle, 18/36

contact

3

CONNECTOR, receptacle, 28/56

contact

1 SOCKET, integrated

circuit,

14

pin

6 KEY,

connector polarizing

1 STIFFENER, circuit card

-

mounting hardware: (not

included

w/stiffener)

4 RIVET, blind

-

mounting hardware: (not

included w/

circuit

board assembly)

4

SCREW, thread

forming,

6-20

x

0.312 inch,

PHS

1

CIRCUIT BOARD

ASSEMBLY—

POWER SUPPLY A2

circuit board

assembly

includes

:

1

CIRCUIT

BOARD

14

TERMINAL,

pin, 0.365

inch long

14

TERMINAL,

pin, 0.50 inch long

1 COVER,

capacitor,

1.365 IDx2.562 inches long

2

COVER,

capacitor,

1 ID

x

3.562

inches long

1

COVER,

capacitor,

1 ID

x 3.562 inches long

4

PIN, test

point

6

CLIP,

fuse

-

mounting

hardware: (not

included w/circuit

board assembly)

6

SCREW,

6-32

x 0.25 inch, PHS

1 TRANSFORMER

transformer

includes

:

1

HOLDER,

terminal

connector,

2

wire (black)

2

CONNECTOR,

terminal

-

mounting

hardware:

(not

included

w/transformer)

4 SCREW,

10-32

x

2 inches, HHS

4

SCREW,

10-32

x

2.50 inches,

HHS

4

TUBE, insulating,

0.188 ID x

1.125 inches

long

4

TUBE,

insulating,

0.190 ID x 1.875

inches

long

4 NUT, keps

,

10-32

x 0.375

inch

1 COVER,

transformer

1 PANEL

,

rear

2

CLAMP,

transistor

-

mounting

hardware

for each:

(not

included

w/clamp)

3

NUT,

hex.,

6-32

x 0;25

inch

©

9-1

MECHANICAL

PARTS

LIST-TYPE

5103N

Fig.

&

Index

No.

Tektronix

Part

No.

FIGURE

1 EXPLODED &

Q

Serial/Model

No.

t

Eff

Disc

y

STANDARD ACCESSORIES

(cont)

Description

1

2 3 4

5

1-27

342-0082-00

3

INSULATOR

-28

351-0293-00

3

GUIDE, plug-in,

upper

-29 351-0286-00

B010100

B039999

3

GUIDE, plug-in,

lower

351-0286-01

B040000

3

GUIDE,

plug-in, lower

mounting

hardware for each:

(not

included w/guide)

-30 211-0105-00 1 SCREW,

4-40

x

0.188 inch,

100°

csk,

FHS

-31

426-0738-00 1

FRAME ASSEMBLY

-

frame

assembly includes:

210-0617-00

XB030000

3

EYELET, 0.089

OD x 0.125

inch long

131-1254-01

XB030000

3

CONTACT,

electrical,

ground

-32

175-0826-00 ft

WIRE, electrical, 3

wire

ribbon,

3

inches

long

-33

175-0829-00 ft

WIRE, electrical, 6

wire

ribbon, 3

inches long

131-1199-00 1

LINK, terminal

connector,

block

(red)

-

link, terminal

includes:

-34

131-0707-00

2 CONNECTOR,

terminal

-35 352-0166-02 1

HOLDER, terminal

connector,

8

wire

(red)

131-1200-00

1

LINK, terminal

connector,

block (brown)

-

link terminal

connector

includes

:

131-0707-00

2

CONNECTOR,

terminal

352-0166-01

1

HOLDER,

terminal

connector,

8

wire

(brown)

STANDARD

ACCESSORIES

070-1143-00

1

MANUAL,

instruction (not

shown)

9-2

©

SUPPLIED WITH

DISPLAY

UNIT

ONLY— SEE

DISPLAY UNIT

MANUAL

—

FIG

I REF. I

5103N POWER SUPPLY/AMPLIFIER UNIT

&

OSCILLOSCOPE

SYSTEM

FIG.

1

EXPLODED

&

STANDARD

ACCESSORIES

FIG.

2

BENCH

CABINET

MECHANICAL

PARTS

LIST-TYPE

5103N

Fig,

&

Index

No.

Tektronix

Part

No.

FIGURE

2

BENCH

CABINET

Q

Serial/Model

No. t

Description

Eft

Disc

y

i

2

3

4

5

2-1

200-0728-01

1 COVER,

handle end, front

-2

200-0728-00

1

COVER, handle end,

rear

-3

367-0116-00

1 HANDLE,

carrying

-

mounting

hardware:

(not included

w/handle)

-4

212-0597-00

4

SCREW,

shouldered,

10-32

x

0.355 inch

-5

386-1624-00

2 PLATE, retaining

-6

386-1283-00

2 PLATE,

handle

mounting, plastic

-7

390-0193-00

1 CABINET SIDE, left

-

cabinet

side includes

:

214-0812-00

4 LATCH ASSEMBLY

-

each latch

assembly includes:

-8

386-0226-00

1

PLATE,

locking

-9

386-0227-00

1

PLATE

,

index

-10

214-0604-00

1 SPRING, latch

-11

214-0603-01

1

PIN,

securing

-12

390-0192-00

1 CABINET

SIDE,

right

-

cabinet

side includes:

214-0812-00

4

LATCH ASSEMBLY

-

each

latch assembly includes:

-13

386-0226-00

1

PLATE, locking

-14

386-0227-00

1 PLATE,

index

-15

214-0604-00

1 SPRING,

latch

-16

214-0603-01

1

PIN, securing

-17

390-0190-00

1 CABINET BOTTOM

-

cabinet bottom includes:

214-0812-00

4

LATCH

ASSEMBLY

-

each

latch

assembly

includes:

-18

386-0226-00

1

PLATE,

locking

-19

386-0227-00

1

PLATE

,

index

-20

214-0604-00

1

SPRING, latch

-21

214-0603-01

1

PIN,

securing

-22

348-0073-00

2

FOOT,

bail

limiting, left

front

& right

rear

-

mounting

hardware

for

each:

(not included

w,

-23

211-0532-00

2

SCREW,

6-32

x 0.75

inch, Fil HS

-24

210-0457-00

2

NUT,

keps,

6-32

x 0.312 inch

®i

9-3

MECHANICAL

PARTS

LIST-TYPE 5103N

Fig.

&

Index Tektronix

No. Part

No.

FIGURE 2 BENCH CABINET

(cont>

Q

Serial/Model

No.

t

Eff

Disc

y

1

2 345

Description

2-25 348-0208-00

-26

348-0074-00

-27

211-0532-00

-28

.

210-0457-00

-29

348-0207-00

-30 348-0275-00

-31

212-0101-00

-32

212-0008-00

-33 210-0008-00

-34

361-0388-00

-35

343-0256-00

-36 211-0531-00

2

FOOT, cabinet,

left front

& right

rear

2

FOOT, bail limiting,

right

front &

left rear

mounting

hardware for each:

(not

included w/foot)

2 SCREW,

6-32

x

0.75 inch,

Fil HS

2

NUT,

keps

6-32

x

0.312

inch

2

FOOT, cabinet,

right

front & left

rear

1 FLIPSTAND

2 SCREW,

8-32

x 0.375

inch,

CHS

2 SCREW,

8-32

x

0.50 inch,

PHS

2 WASHER, lock,

internal,

0.172 ID x

0.331 inch

OD

2

SPACER,

flat, for spacing

of

DISPLAY

&

POWER units

2 RETAINER BLOCK,

plastic

mounting

hardware

for each: (not

included

w/retainer block)

2

SCREW,

6-32

x .0375 inch,

Fil HS

©

9-4

MECHANICAL PARTS

LIST

-TYPE

5103N

FIGURE

3

RACKMOUNT

CABINET

Fig.

&

Index

No.

Tektronix

Part

No.

Serial/Model

No.

Eff

Disc

Q

t

y

Description

1 2

3

4

5

3-1 351-0195-00

1 TRACK,

slide-out

(pair)

w/hardware

-2 351-0104-00

1 SLIDE,

section,

basic tilt

(pair)

w/hardware

-

mounting

hardware:

(not

included

w/slide)

-3

212-0004-00 6

SCREW,

8-32

x 0.312 inch,

PHS

210-0858-00 6

WASHER,

flat,

(used

as

spacer

under

slide)

-4

407-0899-02

1

BRACKET,

right

mounting

hardware:

(not

included

w/bracket)

-5

212-0040-00

2 SCREW,

8-32

x

0.375

inch,

100°

csk,

FHS

-6 407-0899-00

1

BRACKET,

left

-

mounting

hardware:

(not

included

w/bracket)

-7

212-0040-00

2 SCREW,

8-

-32

x 0.375

inch.

100°

csk,

FHS

-8

390-0191-00

1

CABINET

SIDE,

right

-

cabinet

side

includes:

214-0812-00

4

LATCH

ASSEMBLY

-

each

latch

assembly

includes:

-9

386-0226-00

1

PLATE,

locking

-10

386-0227-00

1

PLATE,

index

-11 214-0604-00

1

SPRING,

latch

-12 214-0603-01

1

PIN,

secuting

-13 390-0194-00

1 CABINET

SIDE,

left

-

cabinet

side

includes:

214-0812-00

2

LATCH

ASSEMBLY

-

each

latch

assembly

includes:

-14 386-0226-00

1

PLATE,

locking

-15

386-0227-00

1

PLATE,

index

-16

214-0604-00

1

SPRING,

latch

-17

214-0603-01

1 PIN,

securing

-18 390-0222-00

2 CABINET

BOTTOM

-

each

cabinet

bottom

includes:

214-0812-00

4

LATCH

ASSEMBLY

-

each

latch

assembly

includes:

-19

386-0226-00

1

PLATE,

locking

-20

386-0227-00

1

PLATE,

securing

-21 214-0604-00

1

SPRING,

latch

-22 214-0603-01

1

PIN,

securing

-23

212-0103-00

6

SCREW,

8-32

x

0.375

inch

-24

210-0008-00

10

WASHER,

lock,

internal,

0.172 ID x

0.331

inch

OD

-25

361-0389-00

1

SPACER,

flat,

for

spacing

of

display

&

power

uni

9-5

FIG.

3

RACKMOUNT

CABINET

FIG.

4

REPACKAGING

0

1

CARTON

.

-

-

cartoi

>0

2 ethaf:

0

1

pad

s;

0

1 CARTOI

CARTON

ASSEMBLY

(Part

No.

065-0161-00)

4-

065-0161-00

1

7-

004-0357-00

1

8-

004-0360-00

1

9-

004-0260-00

2

10-

004-0758-00

1

CARTON

ASSEMBLY,

for

rackmount

system only

carton

assembly

includes:

PAD

SET,

1

piece

PAD

SET,

2

piece

(see exploded

view)

ETHAFRAME

CARTON

MANUAL CHANGE

INFORMATION

At Tektronix, we continually strive

to keep up

with latest

electronic developments

by adding circuit and

component

improvements

to our instruments as soon as they are devel-

oped and tested.

Sometimes,

due

to printing and shipping requirements,

we

can’t get these changes immediately into printed manuals.

Hence, your manual

may

contain

new

change information on

following pages.

A

single change

may affect several sections.

Sections of

the

manual are often printed at

different times,

so some

of

the information

on

the

change pages may

already

be

in

your manual. Since the change

information

sheets

are carried

in

the

manual until ALL changes are

permanently entered,

some duplication may occur. If no such change pages

appear

in

this section, your manual is correct as

printed.

o

70

o

CHANGE

5103N

EFF SN B050000-up

Page 1 of 2

TEXT

CORRECTIONS

SECTION 1 SPECIFICATION

Page

1-1,

Right

Column

DELETE:

INSTRUMENT

OPTIONS,

Option 1

CHANGE to

read:

POWER

TRANSFORMER

The

transformer

permits

operation from

100-volt,

110-volt,

120-volt, 200-volt,

220-volt, and

240-volt

sources

with

power-

line frequencies of from

50 to 60

hertz

and 400

hertz.

SECTION 2

OPERATING

INSTRUCTIONS

Page

2-1,

Right

Column

DELETE:

All text

in

the

right

column.

ADD the following:

The

5100-Series

Oscilloscope

is to be

operated

from

either

a

115

-volt or

a

230-volt

nominal

line

voltage

source.

This

transformer

is

wired

to permit

one

of three

regulating

ranges

to be selected

for

either

115-volt or

230-volt

nominal

operation.

The

range

for

which the

Page

2-2,

Right Column,

TABLE

2-2

CHANGE

to read:

Regulating Ranges

For Transformer

ELECTRICAL

PARTS

LIST

CORRECTION

CHANGE

TO:

T801 120-0704-00

Power

(Domestic &

Export)

Transformer

120-0704-00

permits 3

regulating

voltages

for either

115

V

or 230

V

with a

factory

setting

of

115

V

line,

120 V

regulating

voltage,

(with

a

1.6

Amp line

fuse

in

the display

module.

MECHANICAL

PARTS

LIST

CORRECTION

Page

9-1

CHANGE

TO:

Fig.

1-20

212-0522-00

4 SCREW,

10-32

x

2.500

inches,

hex

M19,

028/1272

Page

2

of

2

5103N

SCHEMATIC CORRECTION

PARTIAL- -POWER

SUPPLY

&

CALIBRATOR

<

3

^T80«

r

lio/aaov

PRIMARY

UT\L.12:E

|

AETE^

j

N\

QD

|

iso as

i

DELETE

RFTE

R

MOD

\ H

O C.

B

M19,

028/12

72

110/220 VAC

FROM

P8OI

LO

ME.D HI

ir

P6I2

I

.

220

V

JUMPER

\KVS

/

cRfl*n'

A'

/>

c

r

r^,

H

4.

*

&

°

v

I

V

C8I5

-1—

AOOO-jF

I

rr

ist/

acl

__

_

J*

FLOOD

C.UN

HEATER

\W

r

v

n

•*

g

<,.1

VAC.

C

t

WYW

So

ELEVATED

M g

TO

-

»%OOV

any

bn

f=f

t

.t

ft

POWER

PULL-ON

.

COMPONENTS

LOCATED

IN

DISPLAY

UNIT

(SEE

CRT

CIRCUIT

IN

OlSPLAV UNIT

•VlAMUAL)

5103N EFF

SN

B050000-up

ELECTRICAL

PARTS

LIST

CORRECTION

A1

INTERFACE

Circuit

Board

Assembly

CHANGE

TO:

CR620

152-0141-02

Silicon

Replaceable

by

1N4152

CR658

152-0141-02

Silicon

Replaceable

by

1N4152

CR668

152-0141-02

Silicon

Replaceable

by

1N4152

CR678

152-0141-02

Silicon

Replaceable

by

1N4152

CR688

152-0141-02

Silicon

Replaceable

by

1N4152

A2

POWER

SUPPLY

Circuit

Board

Assembly

CHANGE

TO:

CR850

152-0141-02

Silicon

Replaceable

by

1N4152

CR851

152-0141-02

Silicon

Replaceable

by

1N4152

CR870

152-0141-02

Silicon

Replaceable

by

1N4152

CR875

152-0141-02

Silicon

Replaceable

by

1N4152

CR885

152-0141-02

Silicon

Replaceable by

1N4152

M19,

452/5 73

K4XLs

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