Philips PM 3330 Service and user manual

-t

PrftHPs

lnformotion

L5 -2-196

Apparatuses
f,rllowing

points:

of

9

ttre

-/04

PM

333

version

o

/04

are identical

to t}re

cd

616

-/03

version

T,sERVtcE

P;

except

for

the

1.

Resistor

R435

so as to Ímprove

2.

R593

fjr3

3.

In

(47

4.

Type BZY88C12 is
longer

5.

In order to improve
in
R1163
R1183

R1204

6. The
pulse

7.

As the diodes

(100

frSTAB.

order

to Ímprove

kO) is

available.

the case

(22
(22
(56

value of

at BU6

BYX28-400

following changes have already

The

for

valid

8.

C33

(order

the

is no

humber

(100

k0, 0.5 W, 10

the control

kO) is

rt

changed to

changed to l"L0

the

provided,

the

of a short'
k0t- is
kO) is
kg) is

changed to 3. 9
changed to 3.9
changed

R1434

"AMP.

(510

CAL.

BYXZ1-200

and

BYX28-400R htve been

-/04 version.

longer a

choice capacitor, and a 60

4822

L25 50017)

43 kO.

circuit

is connected

7o)

range

control

because

stability

in

kQ

range

the

R440

of

in

of the

+24

order

R589

of

Zener

+6.

Y
k0 and connected
kO and

to

k0 and connected

18

O) is increased

connected to

to
''
and BYX21-200R are

provided.

made

been

!?TRIGG.

to improve

'IAUT.TltIGG.

diode

3

V, -6.3

SENS.

type

and the

V

the

BZY69

supply,

parallel

+6.3

to

,

*

to

$

A in

560

order

no longer available,

in

-/03

the

pF

trimmer is used

version,

R437

to

I'

control

LEVELTT,

(GRl032)

-24

V,
and

to obtain

but

instead.

(8k2,

5à W)

range of

R588

is no

V supplies

a 500

mV

type

they are also

->J

9.

C26

provided

10.

R48 and

11.

Diodes

5642.
ced by the
revised

?rintrd in

and

must

C29

(order

(22

F.49

be

number 4822

Q) are

GR1303, GR1304,

This implies

type

old

type is

Holltnd

4822

identical

changed to 15

GR1305

that a

(code

simpler

number 4822

L42 60116.

N.Y.

within 1 7o;

50075)

Lzl

thus

O.

type BYL40 replace

of

transformer T1301 is

142 60062).

FHILIPS'

GLOEILAI{?ENFA!i|EKEN,

moulded

The

polyester

types are

vacuum-diodcs

and can

used

order

numi:er

Eindhoyon,

94e9 448

of type

repla-

be

of the

Holhnd

03401

PHITIPS

PM

3330

LABORATORY

PLUG.I

N

OSCILLOSCOPE

66 405 16.1-10

11366101

IMPORTANT
In

correspondence

quote

the

type number

on the type

plate

concerning

at

the back of

this apparatus,

and

the serial number

apparatus.

the

please

as

given

4

Contents

GENERAL

f.

ff. Description

INFORMATION

Characteristics

of the block diagram

7

11

IVlaintenance

Vil.

A.
B.
C. Fans
D.

Air filter
Segment

Cabinet

switches

plates

49
49

49
49
49

DIRECTIONS

III.

Installation
A.

Air filter

B.

Adjusting
C. Fuses
D.

Earthing
E. Plug-in
F.

Switching

IV.

Controls
A.

Cathode-ray
B. Beam
C.

Z-Modulation
D.

Y-Deflection
E.

X-Deflection
F.

X-Shift
G. Time
H.

Trigger
J.

Calibration

SERCIVE

V. Explanation

Vf.

DATA

A.

Cathode-ray

B.

Power

C.

Y-Amplifier

D.

Calibration

E.

X-Amplifier

F.

Time-base

G.

Trigger

H.

Trigger

Gaining
A.

Detaching

B.

Removing

C.

Removing

D.

Detaching

FOR

USE

to the local

units

on

and their functions

tube

circuit

finder

base

A

unit

unit

of the

circuit

tube

circuit

supply

unit

generator

unit

A

amplifier

access

to

parts

the

side

bezel

rear

panels

panel

the
the knobs

the

the

mains

diagram

A

voltage

13
13

13
t4
15
15
16

t7
t7

18
18
18
18
t9

t9
20
22

23
23

23
26
28
29
32
42

47

48
48

48
48

48

VIII. Checking

A.

General

B.

Switching on

C.

Low

D.

High

E.

Mains current

F.

Cathode-ray
G. DC
H. DC

J.

DC
K.

Intensity
L.

Alternate
M. Y-Amplifier
N.

Calibration
O.

X-Amplifier
P.

Beamfinder

Time

a.

Replacing parts

IX.

A.

Fuses
B.

Mains
C. Fans
D.

Power
E.

Cathode-ray
F.

Text

G. Printed-wiring
H.

HT

J. Valves

X. Information

A.

Mains

B.

Voltages
apparatus

C.

Remarks

List

Xf.

of service

A.

Mechanical

B.

Electrical

and

adjusting

supply

Balance Y-amplifier
Balance
Balance

plate

unit

voltages

voltage

base

supply

tube

circuit

X-amplifier
trigger amplifier

modulation

voltage

A and

transformer

transistors

and

semi-conductors

for

assistance in

transformer voltages

and wave-forms in the

parts

parts

parts

and

trigger

on the

tube

boards Ul I and

current

unit

rear

fault

panel

U12

finding

50
50

50
50
51
51
51
54
54
54
54
55
55
56
57
59
59

63
63

63
63­63
63
63
63
63
63

64
64

64
64

70
70

7l

'-'

List

figures

of

Fig.

1 Schematic

Rear side of

2

Fuses

3
4 a.

5
6
7
8

9
10
11
12 Magnifier
13
14 Stability-control
15
16

17
18

19
20
2l
22

23

24

25
26
27

28

29

30
31
32
33
34
35

36
37

Front-view
Rear-view

b.

minals

Controls

Z-modulation
X-deflection
Gate
X-deflection
X-deflection

Time-coefficient

Computation

Trigger

Trigger

Trigger

Calibration
Grid-circuit
Simplified
Power
Power supply
Inductance

plate
Deflection-pl

a

of
Individual
Calibration

Survey

fier circuit

Simplified

fier

Magnifier
Pre-amplifier
Block-diagram
Sweep-gating
Gate output
Miller-circuit
Triggering

without
Effect of

Hold-off

survey

the

X-plug-in

on

with

and

the

of

selector

and time-base

by
shift

X-deflection

of

source
polarity
mode selection

unit

of the

diagram

supply

reducing

capacitance

ate

lumped-line

LC-section

unit

of functions

diagram

circuit

and

of the

Hold-off

Hold-off circuit
circuit

controls

the

of

apparatus

compartment

coded

with

Z-modulation

switch

adjustments

CRT

busses

outPut

frequency

mains

controls

control

time-coefficient

of

selection

selection

CRT

overload

of
output
load

circuit

multivibrator

characteristic

characteristic

the effect of

capacitancies

circuit

the

of

of the

of time-base

unblanking

Miller
circuit

lamps

controls

horizontal ampli-

run-up circuit

and

input ter-

protection

deflection

forming

time-base

A

circuit

part

ampli-

Page

10
13
14
15

r6

I7

l8
18
19

r9
r9
r9

T9
20
20
20

2T

2I

22

23

24
24

24

26

26
26
28

29

30
31
3l
32
33
34
35

3s

36

36

Fig. Page

Stability control

38

Auto-stability

39

Lock-out multivibrator

40
4I Reset

42
43
44

45
46

47
48 Transient
49
50
51 Output of
52

53

54
55 Close-up

56
57

58
59

60
6l
62

63
64 Close-up of
65
66

67
68
69
70
7l
72

73
74

circuit

Reset-circuit
Trigger
Synchronisation
Tunnel-diode

Tunnel-diode
Load-lines

Pulse
Frequency

Removing
Close-up

fier
Top-view

fier

Close-up
Close-up

"Symmetry"
Adjustment
Z-modulation

"chopped"
Vertical
Y-amplifier
Close-up

power-supplies

Measuring

X-amplifier

Output

base

Mains-transformer

Components

Components

Filter-mat

Components at

Components at

Printed

Printed

unit

former stage

(U14)

(Ul4)

amplifier

wave-form

"

busses

circuit board U5

circuit board

circuit

circuit

operatingin

A

separator

characteristics

circuits

peaking

dividing

pulse

former

knobs

the

input

of the

interior

of the

final

of the

rear

of the

"Perpendicular"

of

the

control

"Pattern

of

when

mode

maladjusted

of the stabilising

frequency

the

X-amplifier

the
step-response

at the front
at the

the
the

a

stage

stage

stage

of the CRT

distortion"

operating in

correctly

"

of

*Gate"

data

ÍeaÍ

interior
interior

(calibration

U6

"triggered"

of

the Y-ampli-

of

the Y-ampli-

controls

and

control

the

adjusted

circuits

characteristic

(left
(rear

(TV

and

side)

panel)

sync.)

of

"Time-

volta

mode

the

ge)

37
38
39
40

4l
42
43
44
44

44
45
46

46
47
48

49

51

52
53

53
54

54
55
55

56
57

58
58

62

64
65
66
67
68
69

79
80

111266101

6

Fig.

Printed

75

amplifier)
Printed

76

Printed

77
78 Printed

Printed

79

Printed

80

Printed

81

resistors)
Printed

82

resistors)

83 Circuit

Circuit

84

circuit

circuit
circuit

circuit

circuit
circuit

circuit

circuit

board

board

board Ul1

Ul2

board

Ul4

board
board U16

board

board

diagram of the
diagram of the

(horizontal

U7

(rectifiers)

U8

(power

(power

(power
(CRT

Ul7

U18

supply II)

supply I)

amplifier)

circuit)

(power-supply

(power-supply

vertical amplifier
CRT circuit

pre-

Page

81
82
83
84
85
86

87

88
89
90

Fig.
85

86
87

88

89
90
9l
92
93
94
95

Circuit
Circuit
Circuit

generator
Circuit

diagram of the trigger amplifier
diagram of the trigger unit
diagram

A

diagram

switch
Circuit
Circuit
Circuit
Circuit
Circuit

diagram
diagram
diagram
diagram of the

diagram
Circuit diagram
Plug

connections

of the time-base

of the time-coefficient

pre-amplifier

of the

horizontal

of the

of the

power
power

amplifier 97

supply

I

supply II

of the high voltage unit

of the calibration

unit

Page

9l
93

95

95
96

99
101
102
103
104

111266101

V

\-/

GENERAL

INTRODUCTION

INFORMATION

The PHILIPS
with a

wide range

This

is
plug-in
The

with
The
nel
The horizontal
rator

Tolerance

Properties,
ment
Numerical
information

units

basic

a constant

total

are

dependent

and

of

PM

obtained

which cover

oscilloscope

bandwidth

gain

and bandwidth

(X)

an

amplifier.

expressed

tolerances

values

purposes

CharocterÍstics

CATHODE-RAY

3330 is

of

by

on the

channel

are

without

CIRCUIT

a cathode-ray

applications.

providing

various

contains

and

type of

contains

in

numerical
guaranteed

tolerances

only

and indicate

the apparatus

application

vertical (Y)

a

gain.

of

the vertical

plug-in

a

time-base

values

by

are intended

the

oscilloscope

with
facilities.
amplifier

(y)

chan-

units

used.

gene-

with

state-

the factory.

for

properties

Plug-in
connection

can be used

of the
which
scope.

The
An internal graticule
rements.

of
good
stated.

units

for horizontal

of a second

as a

delay unit

basic oscilloscope)

PM

the

cathode-ray

an

average

for

3330 can function

apparatus.

nominal

tube

mains

(X)

deflection

time-base

gives

guarantees

generator (which
for the time-base
or an amplifier

a clearly

parallax-free

The numerical

voltages

permit

generaror

unit with

as

X-y

an

defined display.

unless otherwise

oscillo-

measu-

values

the

also

hold

Tube
a.

type

phosphor

b.

c. usable
d.
e.

Unblanking
ZModulation
a. voltage
b.

input

c. input

Y-DEFLECTION
Final

a.

type

b.

rise

c.

-

bandwidth

d.

delay

Plug-in

viewing
accelerating potential
graticule

required
impedance
RC-time

amplifier

time

unit

area

Dl3-16/lGH,
Screen

Medium
The
blue-green)
6 cm vertical

10000
internal,
2-millimeter
Graticule
DC-coupled

external

15 Vp_p

25

0.5 ms

DC-amplifier
5

0...70 Mc/s
bymeansofaninternaldelayline.Effectivedelay
see

diameter

screen

V

k0ll35

ns

the relevant manual.

flat

screen.

13

cm

persistance,

short

types BE

are optionally

x l0 cm horizontal

marked

illumination

for

pF

in

markings

frequencies

green

(short

persistance,

supplied.

6 vertical

on

the center

is

continuously

from

300

(GII).

and

10 horizontal

lines.

variable.

c/s.

blue) and Gp

>

(long persistance,

l-cm

divisions with

60ns.

8

X-DEFLECTION
Optional

TIME-BASE

Time co-efficient

a.

b. Magnification l,2andíx.

c. Operation

d. Triggering souroe

Slope
Operation AUT.: l0 c/s...I

e. Required trace height for internal

triggering See the manual of the

f. Required voltage for extrenal

triggering 0.4 Vp-p up

g.

Input impedance

h. Trigger

internal adjustable over 6 cm trace-height
external

GENERATOR

level

Time base

a.
b. Single

50 Hz

c.

EXT.

d.

EXT.

e.
f. X-plug-in

adiustable

50, 100, 200, 500 etc.

viz.
Tolerance: + 3%.
Continuous control between

Tolerance: ! 2f
triggered,
free running,

(not possible

single

internal,

external,
internal by
phase).

-

or

*

HF : RC-time

LF :

DC
TV LINE :'LEYEL"
TV FRAME ;

"TV

FRAME"

I Vp-p in

I MO//55

adjustable over 6 Vp-p.

A

(time

base A)

(adjustable phase

(1

l)

:

(1

l0)

:

unit

to23 calibrated

with

means of

Mc/s

('LEVEL'and

ps.

80

RC-time 56

to

the

pF

ms.

"LEYEL'and'STAB".

relevant

50 Mc/s; I Vp-p

'TV

and

position

for the

"AIJT.'

positions

ns/cm

automatic

a voltage

"STAB'.

and

LINE" I Vp-p

and

amplitude)

values:

up to I s/cm.

the

steps

switched off)

"STAB".

plug-in

up

at I Mc/s.
o

AUT'.,

possible (non-calibrated).

is

triggering).

with

to

mains

the

switched off.
switched

unit.

100

Mc/s. In the

positive

oH.F',

video.

'LFo

frequency

off.

positions

'DC".

and

(adjustable

X-INPUT
a.

amplifier

b. input

input impedance

c. deflection

d. amplitude

deflection

e.
Plug-in

unit

co-emcient

characteristic

DC-amplifier

-

asymm.

I ivíol

0.5 V/cm

5 V/m

0...1
10 cm
See the

4 mm socket

pF

ls5

("EXT")

("1

Mc/s

manual of

: l0

EXT")

the

relevant

plug-in

unit.

9

CALIBRATION
a. Voltage square-\vave

b. Current square-\vave current

Output
a. Gate voltage

b.
c. Calibration voltage see calibration unit

Power supply By means of a

Power

Mechanical

voltages

Sawtooth

consumption

UNIT

voltage with frequency
0,2,0.4,0.8,2 etc.
Tolerance:

Ro in

Tolerance:

35 Vp-p starting at Olevel synchronous

+

voltage

details Cast aluminium front and rear frame.

90

r

125 V - 145 V - 200 V - 220 Y
Mains frequency:
mains

500 W at maximum

Two-piece cabinet

l\

mV-range:

lft

Vp-p starting at 0-level

voltage

mVp-p

50

voltage

utO

should not

(skin plate).

of2 kc/s, adjustable to 18 values, viZ.

up to 80 Vp-p.

O
with

frequency of 2 kc/s, 4 mAp-p.

with the time-base voltage.

adapter adjustable

and 245 V.

-

100

c/s. With mains frequencies ( 50 c/s,

exceed the nominal value.

(plug-in

units included).

to mains voltages of I l0 V

-

the

Dimensions

OPERATING

ACCESSORIES

and weight Height : 46 cm

CONDITIONS

Width : 34.5 cm

internal

an

(knobs

0...35"
temperature, the instrument is switched off by

relav.

Depth : 68 cm
Weight

Ambient temperature:

At too

means of a

- manual

-

-

: 42 kg

high

thermal

mains flex

;ïf:':il:r-ffi-4mm

and air filter included)

C.

(pM

eo5,)

10

Y-

I

PLUG

I

TRtcc.f-oEXT.

DELAY

DRIVER

BEAMFINDER

BEAMFINDER

Hz

LINE

+

GATE

TIME

BASE

ENERATOR

TIME
BASE

DELAY

TIME

BASE

SINGLE

50

EXT
r -10

LINE

Hz

EXT.

A

TIME BASE

AMPLIFIER

A

MAGN.

FINAL
AMPLIFIER

x5

BEAMFINDER

x2

xl

PEM

ÉJ-

2719

Fig.

1.

Schematic

survey

the controls

of

\-/

\J

tl

Description of the

Y-AMPLIFIER
The Y-amplifier

consists
a. a delay-line

b. a

c.

The

tions,

impedance

TIME-BASE
The

Here
selected
included.
The STAB.
base

of:

delay line

final

a
for

the cathode-ray tube.

Y-deflection

included in a lumped line,

time-base

the

by

generator

is

a symmetrical

driver

which supplies

stage

plates

of

output

the

GENERATOR

generator

charging capacitors

means

control

of the

regulates

operates.

block-diogrom

DC-amplifier, which

deflection

the

have been divided

which forms

valves.

is of the

Miller-integrator type.

resistors which

and

knob TIME

whether or not

lc

voltage

in four sec-

anode

the

aÍe

have been

,

time-

the

The signal
and,
pulse
The
adjusted.
In the trigger
TV
these

CATHODE-RAY
The

regulate
cathode-ray
An
voltage

Wehnelt-cylinder.

the
The cathode

capacitor

Íear

is

taken

via selectable

shaper.

polarity

signals

signals

controls

HT unit supplies

of

and

unit

has been

possible.

is

"INTENS.",

voltages on the

the

tube.

the

and

of the cathode-ray

accessible

instrument.

the

from an

high-pass

level of the

the

a synchronization

also

included, by

TUBE

"FOCUS"

the

negative

voltages

for external

internal

filters

positive

or external

is fed

trigger

which triggering

and

several

electrodes

for

tube

Z-modulation,

source

the trigger-

to

signal can

separator

"ASTIGM."

post-accelerating

cathode

the

via a

is

be

for

on

of the

and

coupling

ofl the

X-AMPLIFIER
The X-amplifier

circuit
The
the amplification of an external
voltage with
The magnifier
the
The
for

TRIGGER

TRIGGER

and a

pre-amplifier

magnification

time-base amplifier supplies

the deflection

The trigger amplifier amplifies

Y-plug-in

the

The

trigger
supplies
tooth

the trigger

generator.

consists

time-base

is

a

mains frequency.

the

contains the

circuit

switch.

plates

AMPLIFIER

unit.

UNIT

unit contains the trigger-pulse

pulse

pre-amplifier,

of a

amplifier.

DC-amplifier, which

cathode-ray tube.

of the

the

for the

magnifier

à

is

signal or an

X-shift control and

a symmetrical volt age

trigger signal

shaper

starting of

for

used

internal

from

which

saw-

the

CALIBRATION

calibration

The

output of

the

a socket

with
A selector

calibrated

a

POWER SUPPLY

mains voltage,

The

circuit,

which
ci
These
loading

BEAMFINDER
By depressing

X­the
tion.

is applied

supply

rcuits.

supplies

or short-circuiting.

Y-final amplifiers

and

sawtooth

unit consists

which is

on

the

enables

current.

the

are electronically

the

generator obtains

UNIT

of an

connected

plate.

front

l8 different

selection

to a

stabilized

beamfinder,

of

via a transformer

number

voltages

the

is considerably

astable
via a

protected

the

multivibrator

voltage

of

control

for the

amplification

free-running

divider

voltages

rectifier

and

circuits,

various

against

of the

reduced

and

over-

and

posi-

13

DIRECTIONS

FOR

Insto llotion

AIR

A.
The instrument

The
To
must
moreover
regular intervals

FILTER

is

air is

drawn in via

assure free

be

circulation of

placed

so,

it is recommended

cooled by

an air

that the air

(see

chapter IX).

means

filter

of

two

at

the

the air,

intake

to clean

USE

fans.

rear.

the instrument

not

is

blocked;

the

air

filter

at

B. ADJUSTING

VOLTAGE

means

By
strument,

I l0 V,

The

'C'

of a voltage
adjustment

125 V , 145 V,

voltages

in

the cover

adjusted

TO

THE LOCAL MAINS

adapter at the

to one of the

200 V

can be

plate. (See

,220

Fig. 2).

V

read

rear

mains voltages

245 V

and

through

of

the

possible.

is

opening

in-

Fig.

2. Rear

side of the

apparatus

t4

FUSES

C.
On

the rear

been

fitted.

voltage

side of
If

of less

the instrument

instrument

the

than 200 V,

tw o 4-A

is

connected

the 8-A fuses

fuses have

mains

to a

included

with

oscilloscope

the

in

found

X-plug-in

the

should

the instrument

compartment.

mounted.

be

on

the screening

(See

These

Fig.

fuses

partition

3).

can

over

be

C508-j

c51

0

c51

c530

c701

Rl

Fig.

41 1-

Fuses

3.

ffi"r..

on X-plug-ín

compartment

l5

D. EARTHING
The instrument

on

the

*
this has

earthing

front

plug

a

may

callse

may

or

with

be

earthed via

rear

the

rim-earthing

hum

and

side,

must

one of

the terminals

or via

the

contacts.

be avoided.

mains

Double

flex

E. PLUG-IN
The instrument

if

("Y-UNIT")

unit

UNITS

only

has

operates

if

been inserted.

ïI*TT

ÉAsC

À

at

least

one

plug-in

-BU1

-BU2

Ëiffi

FtltUSS

|

rÍrt

í333 Y ÀraPl,FEn

tr

ffi

@

-BU3

-BU4

x

otfrÊcrtoN

Ilxt

àèt6

À

SlX6rÉ &€*

ttfèl

Arr

'SK9/LA7

-BU5

-BU6

r|tr{tJHÁt,trar

tr

Ë

ÀÍ<,

^rí{

*

Ytcm

Fig.

.d;i

Y

UI{

Front-vierr

4a.

n'ith

coded

controls

and lamps

PEM

27

4I

t6

F.

S}VITCHING-ON

The instrument is

\ryER ON" switch.
The supply voltages
to allow
proximately
glowing,

a brief

the

switched on by

valve-warm-up

seconds the

30

instrument is ready

The

white

are applied

means

pilot

lamp

via

a time-delay

period.

"READY

for

use.

of the

will

If

"

lamp

"PO-

light up.

relay

after ap-

starts

when

ff,
detached
("READY
When
ing-up
lights up. The instrument

using

from

"

lamp extinguishes).

a Y-plug-in

period

oscilloscope,

the

the

unit is inserted again, a

follows, after which the

instrument, the

the

is ready for use

then

Y-plug-in unit is

releases

relay

warm-

brief

"READY"

lamp

again.

F'ig. 4b.

Rearview v,ith Z-modulation irtput

termínals

and switch

17

Controls

A.

CATHODE.RAY

The

brightness

with

the

A stationary picture

screen for

'FOCUS'

The
definition

ond their

of

"INTENS.

too

long may

and

of the

oscilloscope

functions

TUBE

the oscilloscope

"

control.

of maximum

"ASTIGM."

CIRCUIT

damage

display.

brightness,

the

controls

display

screen.

is

adjusted

left on

adjust

the

the

To

obtain
should
The
graticule.
The
can be

The
photography.

be rotated

cathode-ray

graticule

controlled

graticule

an optimum

simultaneously.

tube is

can

illumination

For

illuminated.

be

knob

by

this refer

adjustment,

provided

"ILLUM'.

particularly

is

to

manual

the

both controls

with

The illumrnation

internal

an

important

of the cam€ro.

for

Fig.

5.

Controls

of

the

lorÍIl

of{ lHïH'fS.

CRT

adjustrnents

BEAf}Tf

IHDÊB

rocus

ASilGITT

r$f,nfflggiÍGr.

18

BEAMFINDER

B.

Fig.

Z-modulation

6.

Ílm

busses

CHoPPER

PEM

2688

depressing the

By

play

is

considerably

wilt

beam
tude
trols.
button,

be

of

input signal

the

During

the display

controls.

Z.MODULATION

C.

intensity of the

The
connecting

"

"EXT.
For

nected

and

this

and the

purpose,

,EXT.'

voltage

The

increasing
When
should

voltage causes a

multi-trace

a

be set to

PER."

plug-in

this

For

terminal

When

be connected

should
cathode

of the

button

reduced.

visible on the

or

depression

the

can be centred

CRT display

an alternating

"+"

on the

rear of

the earthing

switch should

is connected

to the

plug-in

position

unit, see the

'EXT.'

to

is

avoid

CRT.

"BEAMFINDER",

Owing

screen

the

of the

voltage

decreasing

to this
spite of

in

position

of the

"BEAMFINDER"

means

by

be

can

to the

apparatus.

the

should

bar

set

be

cathode

intensity.

used,

is

unit

of the

the

electron

the

magni-

the

shift

of the

modulated

terminals

discon-

be

position

to

CRT;

switch

the

"MULTI-TRACE CHOP-

manual

not used,

interference

concerned.

earthing

the

voltages

on

dis-

con-

shift

by

an

bar

the

Fig.

X-deflectíon

7.

ilnÍ

sefectur

X OTFLËCTION

rAtÍ

A

rtStï

s-

3Í?{ËtÊ

Y-DEFLECTION

D.

controls for the

The

For

units.

E.
The

6-position

position

In
means
controls

the

X-DEFLECTION

X-deflection

switch

of the internal time-base

in

"TIME

the

Y-deflection

explanation,

refer to

voltage is selected

in

"X-DEFLECTION"

the

BASE A", deflection

"TIME

BASE

A"

generator is started and the time

non-periodical

With

may

base

time

deflection switch

the

cases,

"SINGLE
This
sing
If the

position
A"
afterwards.
can
If the
tion,
depressing

A". The time-base

blocking situation

"RESET"

the

time base

(with

it

frame)

will

A

effected

be

time-base had been

lamp

the

the
will then start
time-base

generator

by

in

signals, a

produce

can be

button.

had

been

of the controls

aid

complete

next sweep

depressing

"RESET"

the

"RESET"

on the

knob.The
next

starts, the

a distorted

should

generator

adjusted

one cycle

of the

the

adjusted

trigger

Y-plug-in

on the

are

relevant

the

means of the

by

is effected by

generator. With the

time-base

the

fraffie,

cc,efficient

is adjusted.

continuously

display.

set to

be

is

then

free

the

"TIME

will be

"

button

trigger

the

light

will

pulse.

by depres-

generator

generator

When

discontinued

to

in the

and

time-base

"RESET

to

button

time-base

extinguishes.

lamp

manual.

frame.

working

such

In

position

blocked.

running

BASE

blocked

again.

posi-

after

up

the

t9

having

After
rator will
Anewsweepcan
knob

and by

The

time-base

completed one

blocked again.

be

be

applying a

voltage and
synchronous with
BASE" and

In

the
wave voltage
can

be

double

In

the

should

'+

GATE"

"50

Hz"

position,

with

varied in

control

'EXT.'

knob

and

be applied

amplitude

deflect the trace
efficient is

"5

Y f crn" in the
In

the

"0.5

"X-UNIT"

Yfcm"

"l

an X-plug-in unit
manual).

F.

X-SHIFT

The

trace can be

"SHIFT"

range

trol

display on the

of the

is magnified.

base

shifted in

controls.

is intended for

and

cycle, the time-base

effected

it

the

to the
in X-direction. The

:

position

The smallest

by depressing the

new trigger

are available

via a

deflection

pulse.

gate

a

voltage

from sockets

low resistance.

is

effected by a

mains frequency. This voltage

and

"PHASE,

"I

: l0

relevant

phase
AMPL.

EXT."

terminals

means

by

50 Hz."

positions

deflection

in

the

l0 EXT."

"EXT.'

position.

position

the deflection is effected by

(see

for this unit

X-direction

knob has

the

means of

by

a

fine-adjusting

X-axis,

particularly

when

"

RESET"

which

"TIME

of

voltage

a

in order

relevant

small

position

the

the

gene-

is

sine-

the

to

co-

and

the

con-

time-

Fig. 8.

Gate

and

time-base output

Fig.

9. X-deflectíon

'tS

by moins

+GAIt

.frequency

SHIFT

TIME-BASE A

G.

l. Adjusting

means

By

coefficients of

time

justed.

position

wise
calibrated.

'UNCAL"

is not

the time

of the

With the

(marked

When

lamp indicates

calibrated any

2. Magnification

gain

The

nifier
With this
by a

"MAGN."

The

of

the

switch in

switch

factor 2

or 5.

lamp

magnification

obtained from

(PM

3347).

coefficient

'TIME/cm"

sawtooth

the

continuous

'CAL")

rotating

the

double

control

knob,

generator

in

the

the time coefficients

continuous

that the time-basegenerator

longer.

X-amplifier

"X-DEFLECTION"

the

is

controlled with

the time-base length can be

In

positions

the

"

x2"

glows.

only works

"TIME-BASE

for

sawtooth voltages

"TIME-BASE

A'

dr

the various

can be ad-

fully

clock-

control, the

the

frame.

magnified

"

and

x5"

are

mag-

the

B'

10.

Fig.

X-deflection

shift controls

nmf/trn

Fig. 11. Time-coefficient

.3

'I

control

ol

2(}

rs(

tr

ro

5
?
I

rt

The

time coefficient of

whole system is

the
dividing the value indicated
factor of

the

"TIME

lcm"

switch.

by the

obtained

by

magnification

12.

Fig.

X-deflection

of

Magnffier

20

Example

coefficient.

time

uNcA[.

2o

Psec'/cm

5

o

to(

m

lo

20

50

Fig. 13. Computatíon of

Fig.

14. Stobilíty-control

ïffrl8/cm

.5

tíme-cofficient

rl

'2

ttvEr

5ÏA

B

20

-L

A

BAST

t.(

P

,T"

X

Stability

3.
a triggered time-base,

ïVith

"STAB."

the

set

to

(switch
If

anti-clockwise).

impossible

it is

w&y, the trigger

of

means
To this
(with
Turn

the

end,

"EXT.

"STAB.

the
anti-clockwise until the
screen.

is the most

This

generator.

base

"STAB.

the

With

("REPET."),

stop
running.

TIMC

A

stNctt

SOHr

UNIÏ

it is
in

control

to obtain a

position

"STAB. "

remove
"

trrggering, remove the trigger

the

"

control

control.

display

sensitive

"

control turned

the

the

stable

can be accurately

input signal

from the

just

trigger

time-base

tEstT

-

2688

PEM

sufficient

"PRESET'

triggering

of

right-hand stop

disappears

position

to the

generator

O

o

most

in

adjusted

Y-amplifier

the

signal).

of the

right-hand

cases

position

in

this

by

from

the

time-

is

free-

Fig. 15.

Trigger

source

,selectíon

}T. TRIGGER

Trigger

L.
The trigger

rator

is

derived

source

pulse,

"INT.-EXT.-50

The

INT.

trigger

unit.

The

EX'I.

Hz

50

plied
The

trigger

to

trigger
voltage
this

voltage

control

UNIT

required
from
Hz"

signal is

signal is

"TRIGG.'

the

to start the time-base

a signal which is applied via

switch.

obtained

derived

signal is

with

the mains

can be varied with

"X-DEFLECTION"

in

the

from

from

terminal.

derived

frequency.

the

a voltage ap-

from

an

The

"PHASE "

the

frame.

gene-

the

Y-plug-in

internal

phase

of

2l

2. Polarity
point

The
at which

in

the signal becomes

selected with

and

a

the

trigger

period

level

at which the time-base starts

visible

polarity

+

switch
control.
When
sawtooth

the signal.

positive-going
When
starting

edge

3. Trigger
The coupling

polarity

the

generator

switch

starts on the

With the

edge can be adjusted.

polarity

the

point

switch is

can be

by means of the

mode

between

is in

"LEVEL"

control the

in

adjusted

"LEVEL"

trigger-signal input and the

the
trigger-pulse shaper is selected by
GER MODE"

AUT. The

The
controlled. When
time-base is
When
rator
ning

ble
In
controls
The
the
of the

switch.

unit is

trigger

starting of

the time-base

AC-coupled.

then

a trigger

triggered.

no

signal is applied, the

is

automatically adjusted to its free-run-

position,

so

that there is always a line

on the screen.

this

position,

the

'LEVEL'

are inoperative.

"AL,IT.

"

time-base

positions

other

position

only.

is suitable for normal

"SINGLE

For

the

of

used.

on

and

" + "

the

positive-going

screen)

the

'LEYEL'

the

position,

edge

level on the

r'-"

the

to

position,

negative-going

the

control.

means

is

signal is

"TRIG-

of the

automatically

present,

time-base

"STAB.

and

use of

display

A"

mode switch should

(and

is

the

of

the

the

gene-

visi-

one

be

r

Evtt

5ïAB

Fig.

16.

Trigger

polarity

selection

AUf

.

"

17. Trigger

Fig.

mode

selectíon

HF.

The

such

LF. In

wave

DC.

The

The

slowly

TV LINE

The

are Lrsed

In
pulse

FRAME"

with

"INT.

With
should
driven
pulses
with

be

with

and in

negative-going

AC-coupling

as hum,

position

this

signals

is now so,

does not

influence

triggering takes

from

approx.

trigger is DC-coupled.

time-base

can then be triggered with a very

varying voltage.

and TV FRAME

"TV

the

LINE"

for

the triggering on TV

first

case the time-base

and

"TV

with the line frequency.

pulse

a

position

with the

the

time base

frame frequency.

TRIGGERING"

"

in

the

a video

the

position,

+'

signal with

"-"

position,

pulses

sync.

that

l.f. interference

the triggering.

place

for sine-

3 c/s.

FRAME"

positions

signals.

is started by a

is

"TV

started

switch

sync.

polarity

the

when

positive

In the

the amplifier

going

when a video signal

is used.

is

22

"EXT.

With

when

works

pulses

is

applied

switch

The

both

should

knobs "LEVEL"

of

the TV

TRIGGERING" the trigger unit

video signal with

a

to the socket

n-n

in

the

be

and

negative-going

"TRIGG.

position

"STAB."

"

The

in

this
inoperative

are

case.

positions.

only

sync.

polarity

in

Fig. 18.

fAl,.

AilPL.

Calibration unit

J. CALIBRATION

"AMPL.

switch

With
pectively
They

calibration

are intended

for
recting the horizontal
The voltage
measuring-probe

is

taken off

contact,
socket.
Especially with
portant
The

to

voltage
coefficients
of 4 cm can
The current
measuring

the small calibration

use

this earthing socket.

values have

of

the units, so that always

be

obtained.

bracket

probe.

UNIT

CAL." a

calibration voltage res-

current can be

checking and,

or vertical

deflection

between the

and

the

been adapted to

be used for

can

adjusted.

if

necessary,

system.

4-mm

socket or the

relevant earthing

voltages it is im-

the deflection

a trace

checking

height

a current

cor-

23

SERVICE

Exptonotion of

A.

CATHODE-RAY

The CRT, which is
has its
with respect to earth.
is
earth.
Potentiometer R6
current,
focus the spot at the screen.
The following

apparatus:
distorsions,
electrical screen to be equal
vertical
deflection
over the screen.

In
exatly
field
mu-metal
tion
by
A
adjusting the deflections
Correct adjustment of the
by
perpendicular
overlap of
If
modulating
connected
and switch SKl4.
Normally
decouple

Switch

unit is used,
tor amplifier.
The

are

the chopped mode.

Unblanking

base B

to the

19)
this
8502'
is difficult
blank
path

cathode

potential

at a

R7

R3l

R320

plates.

plates

order to

coincide

generated

is

magnetic

intensity

and

R3l9 - R321.

pair

of

coils are

R327

and R328 will make

the

is

it

desired

signal

to the cathode via

BU9

the cathode

SK14

connecting

latter receives

generated

pulses

during

grid

of the CRT via

located

at the HT

supply is

of

the time-base

to

the

CRT in

provided

is

DATA

ci rcuit diogrom

tÍre

TUBE CIRCUIT

provided

potential

at a

The

of 8600

"FOCUS"

potentiometers

8

to

R3l4

to obtain

let

the

with the

by a coil which is

and center

graticule.

to

is earthed

must

during switching

the sweeps of the

directly

push

via C301.

Volts

"INTENSITY"

and

compensate

adjusts

of

can be connected

be thrown

blanking

the

the

centers

horizontal

internal

screen around the

magnetic field

this

fitted

to the

due

currents through

the

intensity-modulate

(via

C303).

the cathode to a single-transis-

generated

supply.

coupled to the

circuit. At fast sweep-rates it

up

this supply fast enough to un-

required

O

(Fig.

84)

with

post-deflection

to the average value of the

an equal

to

to

when a

pulses

floating

a

internal

an

1440

of

positive

controls the beam

"ASTIGMATISM"

R8

placed

are

for

cushion and bar

potential

the beam through

light

deflection of the spot

graticule,

mounted

neck

the X- and Y-systems.

the deflections

useful

scan for uniform

to

blocking capacitor

BUl0

by a bus-bar

multitrace

from

over when operating in

by

time-base A or

spot are

grid

positive

The

cathode-follower

Therefore

time.

graticule,

Volts negative

accelerator

with respect

inside

of

the

distribution

a

The direc-

tube.

can be adjusted

of the CRT, for

these

the beam, the

BU9,

unit

the

DC-coupled

supply

terminal of

the

internal

the

magnetic

inside the

coils

exactly

which

C303

plug-in

which

time-

(Fig.

AC-

an

to

to

POWER

B.

1. General
power

The

solid

with
(10

kV)

Mains

2.
primary

The

the I

with

Volts

20

this way

In

of

one
220V-245V.

motors

The
connected to the two
They are connected
counteract
A thermal
from overheating. It
temperature of approximately 60oC.

protected

is
switched
Some
connected to a

to 12V

Sl5

to 1440 V neg.,

Sl8

Solid

3.

Negative

a.

is

voltage

The
full-wave bridge-type rectifier consisting

BYIOOS
capacitor
voltage
ASZI5
series.

19.

Fig.

SUPPLY

supplies up
state elements;

is regulated

transformer

l0 Volts

winding,

it is

the line-voltages I

of

each

cut-out

by a double

of the windings

pos.,

state

150

(GRl02l

Cl02l

regulator

(TSl032

Grid-circuít

by vacuum-tubes.

side of

delivered by winding

the

windings, ê

the latter

possible

the two cooling-fans are

110

so that their stray

other.

(REl003) protects

switches

2 fuses

by

pole

DC-supply,

516 to

Sl3 and Sl4

power

supplies

(Fig.

Volts

... GRl024)

(200

consist of

TSl035) which are

oJ'the CRT

400 Volts

to

high-tension

the

mains

transformer

l5

Volts
connected

two

the transformer

adapt

to

-

125 V - 145 V - 200

l0 V

Volts windings.

off

the

(slow-blow);

(SKl

switch

filament supply

delivering

70 V

pF).

a

namely:

Sl7 to

neg.,

are earthed.

9f

)

52 is rectified by a

and smoothed

The series elements

power

Íour

are constructed

supply

provided

is

winding

magnetic

the

mains

The transformer

the

l).

connected

and

in

series.

V

permanently

fields

apparatus

supply at a

mains is

pos.,

70 V

of 4 diodes

of the

transistors

a

to

-

are

by

in

25

Positive 130 Volts

b.
This supply

very

The

precision

the

R1076
Volts supply
rence voltage derived from this

of TS
signal and

over
adjusted to
the value of

Diode

setting

c. Positive

A tension

Volts supply

tion being

d. Positive

The

supply of 330

Volts

e. Positive 400

The

supply of

the

to

f. Positive

Negati

These
except

derived

resistor
The

circuits including

structed
description of the negative 150
positive

g.

Time

A

time
vacuum
of the various
It

consists of
a contact after about
The
energised over a change-over

is built like the

value of the output

metal-film resistors R l07l - R 1072

R1077. No

gives

exactly

l03l . The

Cl0l6. The

GRlO3l

of the

of

the

to the

330

v e 7 0-24-12-6.3

tensions are supplied

the

from

and a

according to the

130 Volts

delay

delay

tubes

contact energises

base of

a signal which is

amplitude

minimum ripple

a

R1062.

is

essential

power

supply

200 Volts

200 Volts

on

330 Volts

200 Volts supply.

Volts supply.

70-24-12-6.3 Volts.

12

of the

top

same as the

Volts

Volts

400

Volts

Volts

24

the

Zener

supply.

is

built in

to warm

power

the

bi-metal

negative

voltage

adjustment

its nominal

1030 receives

TS

proportional
of the

at the output

for the

in

case of a short circuit.

is obtained by connecting a

130 Volts

latter

is obtained

is obtained by adding 70 Volts

Volts.

by
positive
Volts supplies merely

diode

the overload

supplies.

and

for each.

principles

allow

to

up before applying the

relay REl001

seconds upon

30

REl002 which keep

relay

contact

150

is determined

is needed

voltage.

supply

is fed to the

latter

protection

supply,

one.

by adding

separate

power

negative,

protection

mentioned in the

Volts supply

filaments of the

the

and an

Volts supply.

by

if the

to the

signal can

by changing

which

.switching

150

refe-

A

base

the error

ripple

be

re-

and

70

opera-

the

130

supplies

which are

by using

are con-

and

the

voltages

closes

on.

itself

intercon-

nection

left-hand

the
contact

REl00l.

lmmediately

"POWER

lamp LA9

The
hand

no

has

High

h.
The

rectifying the output voltage of a
tor.

tube B 1301 .

the

At the second
wave
smoothing filter
and
present
floating
8502"
the
nected

the cathode-ray

of

It is
Rl3l3. The
ted

the

of
voltage
81303
vides 8600 Volts

a

celerator anode.
connected
cathode-supply
tension
("HT
negative supply
variations in load
negative
cathode
once more
of the latter
oscillator
As the output
Volts
the
sed.

earth via

to

plug-in

of RE 1002 breaks the energising circuit of

upon switching on the

lights.

ON"

"READY"

time delay also operates after

plug-in

high

The

capacitor C1308. A

time-base

possible

via

oscillator

unit;

influence.

voltage

rectifier

over

power-supply

via R301, receiving

via

Rl3l4,

power-supply.

-4

according

ADJ.")

positive

porver

tension

oscillator

ary side, 53 delivers tension

GR1301

consisting

capacitor C1308.

generator

R I

31 3 to

to adjust the

other side of

R1316 and Rl3l7

tripler consisting

-

5 andcapacitors C1309-

A half-wave rectifier

provides

to 54

of

is compared with the stabilised

by the

tension, an error-signal

grid

and

tube 81301, thereby controlling

of this triode.
left-hand

by the

triode varies

of the

supply are

these

interconnected

two

unit. V/hen

When relay REl002 is

lights.

removing

supply

is obtained by

circuit consists of

-2

-3

tension

is

connected to

A. The

R6

which

tube.

potentiometer

54

and

positive

the

to

should

for

1440 Volts negative

cathode-ray tube.

the setting

right-hand triode of

tend

triode

the

floating bias

proportional

supplies

two

changing

right-hand

the

(see

Fig.

40 kc Hartley

which

of C1307,

of 1800 Volts must

positive

The

"unblanking"

the

negative

is the

range of R6

to the

55 deliver a

of three 10

the

potentiometer

of

to change the

will

This

of B 1302.

screen-grid

supply

are indirectly

terminals

over,

mains lamp LA8

energised

changing

93)

transforming

the

is

cathode-follower

intensity

post

exist

signal

the left-

plug-in

oscilla-

S I and 52

to the

followed

resistor

side of

pulse

side is

control

adjusting

by

R6 is

connec-

positive

tension

kV rectifiers

ll 12. It

deflection

GRl304

Part of

150 Volts

1302. If

B
440 Volts

1

between

is

amplified

The output

voltage

its

output.

and the

output

to the

Rl3l2

to the

­for

R1326

of the

stabili-

at

the

unit

and

and

half-

by

be

this

of

con-

side

pro-

ac-

-

5

the

this

the

8600

a

6

of

26

Y-AMPLIFIER

C.

L.

Coupling

to the

cathode-ray

tube

Fig.

23.

Inductance

plate

Fig.

24. Deflection-plate
lumped-line

reducing

capacitance

the

effect

capacitancies

of

forming

deflection-

part

of a

If

deflection

the

connected

were

stage, the
citive
the

fion

where
anodes

It

of
of
However

stage

a
plates
The four
form
network
ohmic
tually
vantage
individual LC
the
all the
Coils
line,

L35. The

to
to be
be adjusted
deflection
horizontal

pass-band

load

of

equation

I

­2nRC

C

is

the total effective

and

has been

deflection

the

inductance

some

in

further

into 4

plates

a

lumped-constant

of inductors

termination.

purely

over

is

C

of

à

plate

capacitance

L3l

and L34

which

is

adjusted

so

plates

deflection

plates

of the cathode-ray

directly

the deflection

for

the cut-off frequency

earth,

common

this instrument

by

sections.

are

resistive
past practice,

sections

the total

terminated by

relevant

for

that the

is

to

the anodes of the output

would

be

too low due to the capa-

plates.

capacitance between

and R

plate

form

optimum step-response. R99

equal to

is

the anode

practice,

capacitance by

to the anode

dividing the

interconnected

then

line, which

and resistors

Thus

(Fig.

(Fig.

capacitance,

is

the inductance of the lumped-

inductors

DC-potential

plates.

to

idea has

the

input

the

24). This system has
in

that the

25) is

present

network between

the

and

DC

the

(CRT)

tube

This is known from

is

which

(600

load

reduce

circuit

vertical

is

providing

impedance

much higher

as it is here,

in one unit.

resistor R75 have

-

the

the addition

(see

Fig.

been

deflection

externally

terminated

a

the

pass-band

vertical

the

of

potential

effect

taken

by

purely

is vir-

of the

when

than

L32

must

of

the
O).

23).

to

a

ad-

if

the

Fig.

25. Individual

LC-section

2.

Output stage

The

lumped-line
anodes
push-pull
At

R90-C55 reduces

quencies
and
The
be

gain

of

two

output

cathode

the

to compensate

deflection

quiescent

equal which

of this

stage

tubes E55L

system.

plate-current

can be

Vo

Vi

d.:

fc:

is connected

stage.

side a frequency-dependent

the negative feedback at

can

be

-(+)'+in

,

constant,
cut-off

the losses

achieved

adjusted by changing

depending

frequency

L30

via

(B5,

of both output-tubes

by

and

86) which form the

at

anode-circuit

the

adjusting

L37

to the

network

high fre-

must

R82. The

R89.

27

Because

cathode

and

must

drive
This is done by a cross-coupled

EI88CC, which has the

B4')
impedance
impedance of an ordinary cathode-follower.

Delay line

3.
The cross-coupled cathode-followers receive

signals
incorporated to
thie
To
terminated
tic
the cross-coupled cathode-follower

L29
with the
anodes of
the
reason.

from a 150 nano-second delay

signal which

avoid

impedance. The

provide

to

delay line

high capacitance

of the

high

of

the

be supplied

at the

make it

reflections, both

with a resistance of

an

input

capacity of

the driver-stage

via coils

from a

higher frequencies is about

triggered the

delay line

ohmic

slope

possible

(28 pF)

output-tubes

low

cathode-follower

property

to

time-base.

ends

of the delay line are

270 C),

is

coupled

termination

the cathode-follo\ryer. The

are coupled

L26

and

between

E55L,

impedance source.

the

that

half

line,

which

display the

characteris-

the

grids

the

to

via

L28 for

L27

coils

in

conjunction

input of

to the

the

grid

the

(84',

output

the

their

part

and

same

is

of

of

4. Driver
The

E8l0F
An RC network
(R66-C38,
terminating resistors
effects

At
frequency-dependent

the
capacitors

for

Normally

24

"BEAMFINDER",
nected
current in
off the screen.
The driver-stage
follower
The
equal by

can be adjusted.

To avoid

all

stage

driver stage of

(82,

B3)

R7l-C39) is

in

the

the cathode

resistors

C30,

losses

the

the

Volts.

filaments

When

to earth via R64, thereby

such

similar

quiescent

adjustment of R39.

coupling via the

the

operating

of a

tubes.

side

R5l

52, 54,

,

33, 34,
due to the skin-effect
cathodes are

pushing

a way that the

is

to the one

anode currents of

are fed by decoupled

delay line consists

push-pull

a

as

relatively

connected

to compensate

a network is
negative feedback. It

56,

60, coil L38

35, 36,

the cathode-resistors are con-

fed by

37, and compensates

fed

by a negative

button SKl0,

spot cannot

a cross-cotr1iled

preceeding

B2 and 83

With

filament-cathode capacities,

H.F.

of

tubes

two

amplifier.

long time-constant

parallel

in

for

provided

in

the delay-line.

limiting

the output-stage.

R3l

coils.

to

the

the thermal

giving

comprises

and the

supply of

termed the

the anode

be deflected

cathode-

made

can be

rise-time

the

a

28

D.

CALIBRATION UNIT

The calibration

a repetition

with
accurately
BU6 with
between
An

80

a-stable multivibrator
pentode parts
voltage

of the

unit
frequency of

known

an amplitude which is

V and 200

of

pentode
tension of about
about 50 Volts.

\il/hen
81402

cathode rests
When

the

(5718)

penthode

the

penthode

is entirely cut off. The

at earth

generates

amplitude.

micro-Volts.

Bl40l

(E80CF)

between

Volts

80

is conducting

potential.

is cut-off,

(Fig.

26)

a square-wave

about 2000

Its

output is

c.p.s. and

selectable

formed

by the
switches

an

adjustable

and a negative

cathode-follower

tension of

grid

the

voltage

signal

an

available at

in

steps

triode

the

and

plate

positive

tension of

its

of 81402

is determined

can

which
potential

precision

The
tension

If

Volts.

of the

tude

height

actual
mentioned range.

1000

I :

"mV"

the
If switch SKl3 is
is

available at the output

current

wave
flows

through

position

by the setting of

be adjusted

of exactly

attenuator

into

steps of

switch

SKl3 is in

output

being selected

If

attenuator,

position

the output resistance is fixed

put

with an

a loop at

of

SKl3 switches

potentiometer

so

that the

cathode is

80 Volts.

R1417...

R1427 divides

80-40-20-8-4-2-0.8-0.4-0.2

position

the

signal is expressed

SK12 outof the above-

by

SKl3 is in

converts

in the

the

position

position

the
range

"4

terminal BU6 but a

accurately

known

the front

unit off.

the

panel.

lifted

'V"

the ampli­Volts,

in

millivolts.

to

mA" no

value of

The fourth

Rl4ll

to a

this

the

"mY",

at 50

signal

square-

4 mA

a

In

C).

SKl3F

o

0.lpl.

+

Él

Bl402

8

571

R1412

!

SKl2IIF

aznt,'

SKl3 F

ooFF

omA

rnV

PEM 2741

Fig. 26.

Calibration

unit circuit

29

E. X-AMPLIFIER

The horizontal
pre-amblifier,

a
fier.
These

circuits

having

given

"50

the

Hz",

at
Switch
magnifier

1. Time-base
The whole

is

which
earthed,

produced

is

generator

base

follower 8705
The high

are interconnected

positions:

"EXT.","l

Fig.

27.

is

SK8

circuit in

amplifier

circuit

driven at

so that

from

output is

(left-hand

stability
shunt feedback
well as series
and

the left-hand

of

the amplifier
teristics. The
GAIN ADJ.'
and

the CRT

feedback

overall

DC-balance

is

adjusted

amplifier can be divided roughly into

magnifier

coaxial

a non-symmetrical

circuit

and a

mode

by

"TIME-BASE

A",

: 10EXT.","XUNITo.

this switch. It

to

positions:

the

(Fig.

28) is
grid

one

a symmetrical

"

x

para-phase

a

whilst

the

output waveform

input. The

applied

to

the

time-base

switch

"SINGLE

Asurveyis

switches the

"

1",

x2", " x

amplifier,

other

grid

of

cathode

ampli-

SK7,

A",

grid

time-

triode).

of the

at

the

two

triode of

is nearly

amplifier is

penthodes

right-hand

at

the

8702.

independent

gain

is

of

R73

at

obtained
8703

In

this

of valve

adjusted

complete

the

'XDC-BAL.'

|

by

8704,

and

triode of

way

the

charac-

at R738

amplifier

using

B705

gain

"X-

5" .

is

as

a

lamp
linearity
amplitude),

Horizontal
panel
level
cuit
tion

In
SK7 the
by

fier-switch SK8

A contact
R735.

of SKIO

push-button

If

limits the current

a way,

such

that the

"BEAMFINDER"

SKIO

through

the time-base

electron beam

off the screen.

Magnifier

2.
This

circuit

circuit

(Fig.

29) consists of

8701 with a fixed attenuator

"

x2", " x5"
maximal at the
the " x5"
When SK8

"MAGN.

is

"

I"

x

at C710.

controls

at B70l
from
is

carried out by

positions

range of

switching

its

in

"

x

position.

is at

"

adjusted

position

in

positioning

R4

and

grid.

preceeding

the

"50

Hz",

the

resistor

in

made inoperative.

is

cathode-circuit.

"

position

l

positions

the

glows.

In

at C7O9

"

x2"

of the trace

"SHIFT"

R5

Resistor

R7l7 isolates the

stages;

C707.

"EXT.'

controls

R721.

normally shorts

is operated this

amplifier

cannot be

a cathode-follower

with 3

(located

at

positions:

The

"

x2o

and

of SK8

position

at the time-base

CTll

and

attenuation

minim

and

"

x

in

is effected

vary the

which

frequency

and

made five

is

At the same

compensa-

"l

l0 EXT. " of

:

times

time

resistor

in

deflected

"

X1",

is

al at

"

5"

x

the

5" sweep

position

front

by

DC-

grid

cir-

smaller

magni-

Setting

Time

Single

50

Hz

Ext.

1 : 10

X

Unit

of SK?

base

A

Ext.

Function

A

base

A

fl.

X

B

PEM 2741

50

Hz

(via

TTPIIASE't

Time-base
(e. g.

control)

PM

A

3347)

Time

time-base

or

Fig.27.

Survey of

.functions

of the

horizontal ampltfier circuit

30

Pre-amplifier

3.
If it is

desired

for horizontal

"EXT.,

to drive

"LEVEL

the DC-level

horizontal

this signal

ADJ.

in

the

to the
at
used

signal
spot is

use

to

an

deflection

input

the

time-base

"

R7l4

at the

middle

externally

this

voltage may

terminal BU5.

is amplified

amplifier.

ensures

anode of 8706

of

the screen. For

generated

at 8706

that

without

be

When

(Fig.

is

such

large

waveform

connected

SK7

30)

and

an input

that the

input sig-

nals

BU5,

at

I : l0

between

is

Horizontal
form
PM

3346.
8702 right-hand
left-hand
so

that the

switch

attenuator

the

signal

deflection

can

also

The

tube is

shift controls

SK7 is

(compensated

and

the

with

be carried

signal

is

(Fig.

tube
earthed

R4

out

then injected

via SK7

o

set

I : l0 EXT.

at

C70l)

by

pre-amplifier

anexternally

8706.

generated

by using X-amplifier

at

28) whilst

the

at the PM

R5

and

are

inoperative.

"

so that

is interposed

wave-

unit

grid

of

of

8705

the

grid

3346 unit,

a

(DEFI,.

xz

er,arEl

I T

x1

(DEFL.

pLA

X-unit
( rrM

SK?

3346)

VII

F

+
ï

X

ADJ

GAIN

SKl0

IJeanrÍinder

PEM 2741

Fig.

28-

Simplífied

diagram

of the

time-base amplifier

8507k

(Mitter

R721

A)

3l

+130V

8701'

+130V

R717

SHIFT

(Coorse)

r

SK7

F

YIII

SHIF T

(Vernier

l

+130V

F702"
E 88CC

=+87059
(Time

bose

Ampt.l

Fig. 29.

Magnffier

circuit

SKTV

A

VtI

?SK?

F

R?14

Fig.

Pre-amplifier

30.

circuit

PEM

2741

32

F. TIME-BASE

1..

fntroduction

For
first
the

Each

reference

purpose

the

discussed in order

several

individual

to

2. Block diagram

Incoming

A

actuate the sweep

GENERATOR

of simplicity the

parts

of the complete circuit.

part

corresponding

the

(Fig.

negative

which delivers:

a. a negative

going pulse

cuit

positive

b. a

de ray
trace is seen

positive

c.

a

ble at socket

The

Miller run-up
multivibrator,
voltage

going

grid

tube

on the

gate pulse,

delivers

waveform;

"+GATE".

a. to the horizontal

tion

b. via

a cathode-follower

external

use.

A

block diagram

understand

to

the

is then discussed

circuit drawing.

31)

trigger

pulses

gating

from

the

multivibrator

which starts

unblanking waveform

to ensure that

the forward

screen.

via

a cathode-follower

circuit, driven by

positive-going

linear

a

amplifier to

to socket

the sweep-gating

provide

"TIME-BASE"

functions

in detail

with

trigger unit
(S.G.M.V.)

the Miller-cir-

to the catho-

moving

availa-

time-base

spot

deflec-

for

of

via the

c.

circuit
to

sweep-length

is

The
retrace of
The
form
allow

for

a.

entirely
spot
for

b.

retrace
can

"SWEEP-LENGTH"

back

to the

reset

the

time-base

the

time-base voltage.

hold-off

from

circuit slows

"SWEEP-LENGTH"

the

time:

the

time-base

to its

position

any

actuate

on

transients in

to

die away

the

sweep-gating

circuit.

control

determines

down

generator

quiescent

the left-hand

the system

before

sweep-gating

control and

multivibrator

the

fall of the

the

control

output voltage

corresponding

value

of

side

caused

next

the

multivibrator

hold-off

input

moment of

wave-

in order

to

screen.

the

by the fast

trigger

signal

(S.G.

the

to

fall

to a

M.V.).
The stability
potential
triggering can

"REPET"
runs freely.
setting

the mode

When

at the

is

also

circuit

be effected. If

then

the

A

provided.

stability-control

S.G.M.V.

at

the
running when
signal arrives

no

the
voltage which
normal

triggered mode

permits

input

of the S.G.M.V.

the

the

"STAB.

DC-potential is so that

"PRESET'

position

selection switch SKI

is not

effective

input is such

trigger signal

and

that

is

auto-stability circuit

brings

the

time-base

operation.

of

setting

of the

so that

"

control

the time-base

for the

"AUT.'the

is

at

DC-potential

the

the time-base

present.

supplies

circuit

DC-

stable

is at

stability

is free

If a trigger

DC-

a

into

the

Fig.

TRIGG

TRIGG

Block-diagram

31.

UNIT

UNIT

A

A

L

AUTO

TABILI'

qf

time-base

SWEEP
GATING

MULTIVIBR.

A

HOLD-

CIRCUIT

OFF

MILLER

CIRCUIT

TIME

BASE

SINGLE

UNCAL.

a2

A

A

TIME-

5

10

20

5E

BA

nuefcu

HORIZONTAL
AMPLIFIER

t1

.5

33

The

lock-out

with single

in

a.

time-base,
in

in

b.

the

be depressed

arrival

3.

Sweep-gating

The

circuit

(Schmitt-trigger)

8503
interposed

quiescent

The
8503

cut-off)
When
8501 from
the Schmitt-trigger
state: B50l
The voltage

multivibrator provides

sweep facilities:

"fÍee

the

running"

"RESET"

the

order to initiate

"triggered"

and

of a

trigger

multivibrator

consists

between

these

condition

is known

a negative

trigger

trigger unit

circuit is driven in

is

cut-off,

rise

at

the
by the shunt-peaking
in

some

overshoot.

clipping

leuel

the stability

mode;

after a sweep of

button

must

the next sweep.

the

the

at

(Fig.

"RESET"

sweep

S.G.M.V.

the

32)

occurs upon the

mode,

then

pulse

of

a bi-stable multivibrator

with a cathode-follower

valves.

two

(valve

B50l

conducting

first

as

A

the

pulse

(via

stable

arrives

pulse-transformer

its second stable

8503

circuit

conducting.

is

anode of 8501

-

L60l

R503, which results

is

circuit

be depressed

button

must

B50l

8502'

and

state.

grid

at

the

T40l)

"speeded-up"

the

of

The

overshoot

fast-rising

clean
Cathode-follower

"clipped

is

pulse

8502'

"

by diode

appears at the

is interposed

GR506 so

anode of

improve

to

that

8501.
the

a

switching-time.

positive-going

The
cathode-follower
follower
blanking
socket via
unblanking

-

4. Miller
In the

8502'

pulse (Fig.

cathode follower

pulse

run-up

quiescent

ducting. The

supply

tive

diode

this
with respect

through Rr

clamps

to earth.
lower diode so
Volts with

respect
timing capacitor
The neon

tube B5l4
the Miller-anode
C5l7 acts
resistor
lating.
wave-form
wer B507
recovery

as

R532

C5l6

at faster

provides

time.

pulse

is

fed

8502'

via

switch

to the

Wehnelt-cylinder for

33) and to the
8508'.

lasts

as

long as a time-base

(Fig.

circuit

condition

current

flowing

the

that

the cathode of 8507 is at

34)

both diodes 8504

from

and

the

grid

of

More

current

to earth. Thus

Cr,

is only

about

provides

B506

and

a by-pass

prevents

improves

capacitor across
the neon tube circuit from oscil­the development of the run-up

sweep-speeds. The

a low impedance

from

the cathode

SK7 and

cathode-

the uÍl-

"GATE"

The

output

"GATE"

and

sweep.

are

con-

150

upper

8506

the

the

at about

Volts

diode is low

-2

flows

through

about

voltage

across

nega-

and

Volts

the

-3
the

I Volt.

DC-coupling

a

between

cathode-follower 8507.

neon

the

tube;

cathode-follo-

speed-up

to

the

of

T401

Incoming
trigger
pulses

+t30v

+t30v +400v

Unblanlting
for

Wehnelt

Pulse

sK?u

E 88CC

l.

t

Gate .utput

gsoalg

PEM

-n

2741

Miller

L

circuit

Fig.

32. Sweep-gating

multivibrator

v

+

-

150V

SK?tr

Z00V

H

8502il

88CC

ïtw

J-l-

B5o21k

Fig.

rrl/hen
second

Gate

33.

sweep-gating

the

stable
both diodes.
negative but is

output and unblunking circuit

Consequently

-150v

state the incoming

prevented

feedback.

gain

The
variation through
voltage virtually

of 8506 is

the timing

constant thus
is constant and Cr, is
voltage
8506 starts

cathode of 8507

the
Volts. To stop
made

8507

at

cathode

at + 50 Volts and runs

starts at

run-up,

the

positive,

thus the

Jr-#0v

multivibrator

the

doing so

from

100

about

capacitor

charged

rises

-3
the

upper diode conducts and

is switched to its

negative step cuts off

grid

of

8506

by the

so that any

keeps

current through

the

linearly.

Therefore

linearly. The anode

150

to

*

Volts and

gating

wave-form

8502^tn-ï

tries to

feed-back

Volts, whilst

runs

go

negative

grid-

the

Rr,
the

to

*97

of

Wehnelt

circuit

J_L

1-

+g$u

grid

clamps

the
S.G.M.V.
The anode
cathode
positive.
The cathode voltage of

output of

the

and is

level

begins

diode
established by voltage
fed to the diodes via

speed

The

is

determined

rises

is

selected

by switch

the aiming voltage.

of

the Miller tube to

voltage

of

therefore decreases

the cathode-follower

the

the time-base

"clamp

then

ed"

to conduct at

divider

diode GR50l.

at

which

positive-going

the

by

values of Cr, and

the

(not

SK4

8506

cathode-follower

generator)

to that

-3

Volts.

R523

shown

in

2741

PEM

the output of

and the

grid

becomes

(which

falls to a

level

the lower

as

This voltage is

R524 and it

ramp voltage

which

Rr,,

circuit)

the

the

and

less

is

fixed

is

are

and

B5O?

cathode

-J-V

Ir

tl

f;
I

,l

f150

I

V

PEM

2741

-150 V

SK? III

Multitrace unit

8504

5726

+

130v

+

400v

+

200V

Time

SK?

35

VI

base

B

150v

-

Fig.

Intermediate
the
is done
tages
the capacitor

Rl

"UNC
available at
follower 8508
when
S.G.M.V. output

5.

Potentiometer

Miller-circuit

34.

(uncalibrated)

can be

calibrated

ones,

by connecting

-150

than

Volts so that

can be

is rotated anti-clockwise,

socket

".

To control

in

An external

BU3

the

AL' lights.

operated

is routed to

Hold-ofr circuit

R554

sweep

selected by

timing

the

the

continuously

SK5a closes and the

"TIME-BASE"

multi-trace

a

"altern

ate"

this unit

"SWEEP

speeds,

control

resistor to

charging

varied.

Immediately

sawtooth

via cathode-

mode

a

via SK7.

LENGTH"

slower

Rl.
other
current

output

plug-in

part

(preset

than

This

vol-

in

lamp

unit

of the

is

Sweep

Length

adjustment)
time-base

generator
This tension is ultimately
multivibrator
exceeds the upper
multivibrator the latter
It will be seen
generator

output
S.G.M.V., is clipped
part

is

used.

possible

it

Thus
cross
its
not

is

the lower threshold

quiescent

be

complete for

impossible to

Output

ItTime

provides

an

output

adjustable

to the

fed back

grid

so
hysteresis

that

when

limit

returns

(Fig.

that the

35)

voltage

(Vtn),

so that

the

input

for

value

When this

level.

all successive

obtain the desired

baserr

PEM

portion

hold-off circuit.

the

to

the sample

of the

first

its

to

portion

of

which

only the

to the

Vtn

before

occurs

the

s\ryeeps

display.

static

2741

of the

sweep-gating

amplitude

sweep-gating

state.

stable

the time-base

fed to

is

most

the

positive

S.G.M.V.

reached

has

fly-back

and

will

will

it

to

be

Fig.

Sweep-gating
multivibrato
input

Triggering of the

35.

voltage

Upper

threshold

Lower
th";;h

,'

Miller

ordt/

(VtU)

output

"pime-base

run-up circuit

without

Hold-offcircuit

_f

"iggering
points

PEM

\

v

2741

,,,

36

To avoid
ted to
signal
S.G.M.V.
time to
vided by
(Fig.

this trouble

stretch

that

which is fed

prevented

is

reach its

action of C536 + Cno

the

When

37).

quiescent

the

"SWEEP-LENGTH"
the voltage at the
C536
When

Cno is rapidly

+

the time-base

cent value,

cathode

cathode-follower 8509' is

the

portion

S.G.M.V.

to the

from

portion
control

charged

generator

hold off

of

the timbe-base

circuit

(Fig.

is

incorpora-

36).

switching until Vtn has

The stretching

level.

and R607 + Rno

of

increases in

of B509' rises

the

ramp

from the

amplitude,

and capacitor

up.

output

falls

off due to

cut

to

fly-back

Thus

had

pro-

is

quies-

its

Effect
in

the

its

of

hold-off

capacitive
leaks

hold-off

the
the
voltage of the

so that

loading

away

through

circuit

RC-discharge

sweep-gating

a further

trigger

and the charge

R607 + Rno with

output waveform falls according to

relationship. Thus the

pulse
by driving the sweep-gating
hysteresis limit, until the
quiescent

If

the

larger

time-constant

circuit

value.

"TIME

R.C.

switch is set

lcm"

combination

multivibrator

cannot

multivibrator

time-base

for a slow sweep

is

selected

on

the

the

drops

a new sweep

start

past

voltage

for

the

capacitors

result

that

grid

input

slowly,

lower

its

reaches its

rate

hold-off

a

Fig. 36.

Effect

Hold-off

of

circuit

Sweep
Length
R554

-150V

8507k

t

D----J

L

.|.

-'e

/

8509t'
E88CC

B50gn

R607

l.f

L----J

points

PEM

27

41

Fig, 37.

Hold-off

circuit

PEM

27

T401

4I

circuit
must

in order

overlap

Coupling

of

increase

to

fly-back

the

hold-off circuit to the sweep-gating

the

multivibrator is effected

secondary

the

and
control

6.

Stability

grid.

circuit

winding

the

hold-off

intervals which

intervals.

via cathode-follower 8509

of T40l

directly to

B50l

setting
tor
trigger

"

stable state
A
provided
operates switch
(R577)

of

the

(S.G.M.V.)

pulses

'PRESET'

(fully

preadjusted

is

DC-level

input

can

drive

starting

thus

position

anti-clockwise

SK6). The

at the sweep-gating

grid

so

S.G.M.V.

the

the

for

the triggered

incoming negative

that

(triggered

s\ryeep

setting of

"PRESET'

for

stable triggering.

multivibra-

into

its

second

mode).
mode is
R3

also

"STAB.

potentiometr:r

37

"

The stability

control

de-follower B5l lp

(Fig.

circuit

associated switches,

and

38)

comprising

permits

catho-

the

B5L2a

GR5O2

oA202

85119

B51lp
ESOCF

Fig.

38. Stability

StabilitY

L50v

control circuit

R602

PEM

8509r'k
851lk

2741

38

"Inoperative"

rrT

riggered

I

tF

re

modett

e

-runningt

fi;$;i;J;

+-

M. V.

S.

G.

re si

hy

ste

gap

+

t

hysteresis

gap

+

D.

level

C.

S.

G.

set

by

D.

s

S.
set

C.

G.

by

D.
S.

set

M.

C.

G. M.

M.

V.

"ST4p"

level

V.

trSTABrf

level

V.

ttSTABtt

by

PEM

at

grld

at

grid

at

grid

2741

When

the stability

("REPET")
is

below
actuated
sample

the
and

from

the input

("STAB.")

lower hysteresis

the

slveep

"SWEEP-LENGTH"

the

the upper hysteresis

returns

cuit
consequently
cuit

drops

When
hysteresis

second

the
\ilay the
mits
without
sawtooth

to its

the output

its

to

"hold-off"

the

limit

stable

"REPET"

the circuit

incoming

waveform

first

quiescent

of the

state

setting

"free-run"

to

signal. The

8402a

DC-level

begins.

limit

of the

stable state.

voltage

voltage.

voltage

S.G.M.V.

a new sweep

and

of the

(at

BU3)

GR504
oA202

control is

set

at the S.G.M.V.

limit,

the S.G.M.V.

resulting

The

control reaches

S.G.M.V.

The

of the

falls

and the

sweep

"hold-off"

below

the circuit

begins.

"STAB.'

a trace is

so

control
that

oscilloscope

gating

and

a

clockwise

grid

ramp

cir-

stops and

cir-

the

lower

returns

fn

to

this

per-

shown

delivers

wave-from

(at

BU2) which

can be

used

for

driving external

circuits.

positions

is

In
the

"STAB.
position "ALJT.o
by the

Auto-stability

7.

When

stability

S.G.M.V.

the

time

the
stability

input

The

a

8402 in

present

"TV

FRAME"

"

control is inoperative,

of

auto-stability

circuit

switch

SKI is

controls

are
input
"fÍee-Íun

base

circuit

(Fig.

to this

trigger

the

unit A.

anode

"TV

and

SKI stability

control

circuit.

"AUT."

at

not

effective, but the d.c. level

grid

is

automatically set

".

This

stability

the

is

effected by the auto-

39).

circuit is

voltage

taken from

\ryhen no

B5l3p

at

trigger

is

SKl.-?

GR505

LINE"

whilst

is

taken

and

of SKl,

in

the

over

preset

at

make

to

anode

the

input

of

signal

below the lower

is

oA70

Fig.

39.

Auto-stability

circuit

150v

-

PEM

2741

39

hysteresis level of
free-runs).
This voltage
meter R584

Incoming

level

"ALJT.

trigger signals are

GR504, smoothed

causing

thus

(coupled

input

will also

run

but will respond
trigger signal
while

the trigger

amplitude,

anode of B5l3p

the
can no longer
adjusted by

the

rise

so that the

can

GR505 is

trigger. The

R589

to

means

(thus

preset potentio-

of

the

is

set

S.G.M.V.

by

LEVEL".

rectified

and applied to the

anode voltage

B53lp

in

the

time-base

trigger

to

rise. The S.G.M.V.

to

auto-stability

will no

pulses.

However,

vary over a wide range

pulses

used

going

to

S.G.M.V.

the

as a catch diode

positive

so

that the time-base

bias-voltage

"AUT.

TRIGG'.

the time-base

by

GR503

grid

of

B5l3p,

position)

longer free-

as the

of amplitude

fixed

are of

prevent

to

for GR505 is

and

Lock-out

8.
Normally

follower
control

to

set

multivibrator

valve B5l I

p

B5l I

(Fig.

circuit

"SINGLE'

anode-supply and

lp

B5l
known

On
X-unit arrives,
as a

and

as

the

pressing

simple

B5l lt

lock-out

reset-button,

the

B5l

cathode-follower;

applicable when

will

we
When the
input
hysteresis

call stable state

"STAB

grid

voltage

limit

and

circuit

is inoperative

t

functions

However, when switch

38).
"X-UNIT",

or

thus the

together

part

as a

tube 85l lt receives

circuit is modified

form

multivibrator

when

or

lt is

cut off

whilst 85l lp functions

lamp

position "X-UNIT'

the

A of the

"

control

of

the S.G.M.V.

lock-out multivibrator.

is set

a sweep commences.

cathode-

and

of

the

stability

SK7 is

so

that

a bi-stable circuit

(Fig.

40\

pulse

a

LA7

from

glows (not

is used). This

is

to

set

"REPET
below

.' the

its lower

an

the

-150V

Stability

8513a

31 BIX15

BTIX

-

851lp
ESOCF

150V

R601

+130V

.r

,-i-.

,
!---4---

I
1l

'ó'

t-

I

t

I
I
I

I
I
I

I

B509rt

I

EggCC

-

s.

G.

M.

V.

2741

PEM

Fig. 40.

Lock-out

multivibrator

40

S.

M.

G.
hysteresis
gap

V.

V

2 -

Time-base
output

V.

M.

S.

G.

grid voltage

Reset-button
depressed

PEM

2741

When
wer
and
out
state
(lamp
The
voltage of
upper

ramp-sample

the

(8509")

grid
85l lp

also

multivibrator

(V2)

B

i.e. B5llt

LA7 is extinguished).

ramp voltage

the

hysteresis limit,

rises

above

rise

and tube

switches

conducts

continues

hold-off circuit

the

hold-off

at

the

Vl the

lt is

85l

into its second

rise

to

rises

reverts

latter
state.
Consequently

quiescent

to

the

The current

across

drop

Thus 8509

V2.
through

flowing

R602

R602 is

the

time-base

level.

that

"

cuts

that

generator

through

B5llt causes

keeps the cathode

off so

which

that the current

flowing

is

Thus the voltage at the S.G.M.V.

Y2

at

which is so high that, even

present,

the sweep cannot occur.

20

BIIX

(multitrace

unit)

cathode-follo-

cathodes of

cut-off. The lock-

stable state,

and B5llp

and

to

is cut

when

the output

the S.G.M.V.

its first stable

to

waveform returns

a voltage-

8509

of

through

grid

input

if

trigger

pulses

8509"

off

"

at

flowing

B51lt.

remains

are

situation

This

circuit.

Reset

the

couples

of tube

by

circuit

push-button

from

8512.

cancelled
reset

9.
When

arrives

C527
grid
The resulting

is

B5l2
driving
input

10.

If it
control

the

+130v

coupled

it

back into

voltage

Triggered

is

desired

must

time-base

+130v

can be maintained

operation

(Fig.

of the

41)
"RESET"

plug-in

a

the

resulting

unit

positive

e.g. PM

negative voltage

to the

lock-out

its stable

is restored

mode

to trigger

to Vl and a new

of the single srveep

the single

indefinitely until

"RESET"

is depressed

3347,

voltage step to

step at

the

multivibrator,

A. The S.G.M.V.

state

sweep, the

or

in

pulse

a

button

capacitor

anode of

thus

sweep begins,

"STAB. "

first be set as for triggered operation of

generator.

The

"RESET"

button

is

then

the

the

Fig.

41.

o

Reset

circuit

c526

c527

R567

B,5T2
5654

-150v PEM

8511(P)a

GR5O2

27 4I

S.

M.

G.
hysteres
gap

V.

4l

S.

M.

G.

grid

V2

i

s

V.

voltage

PEM

27

41

Fig.

operated
The
that

Reset

42.

circuit

and the

operation

of the

described above,
the depression
input

falls

to

the

operating

next trigger

circuit

"RESET"

of the

DC-level

in a

pulse

is virtually the

the

with

selected

Time-base
output

"triggered"

starts the

same

exception that,

buttor,

the S.G.M.V.

for triggered

mode

sweep.

as for

after

opera-

(Fig.

tion

sweep

lock-out

the

level

The
R6OI

Push-button

depressed

rWhen

42).

the

commences and the

multivibrator

V2 can

of

"LOCK-OUT

b€ adjusted

LEVEL".

trigger
lamp

gained

has

pulse

appears

extinguished

is

stable

potentiometer

with

state

the

after

B.

42

TRIGGER UNIT

G.

L.

Introduction

The circuit
of the time-base
These
external

provides

pulses

sources.

generator

can be derived

2. Source selection
The

trigger

43.

Fig.
phase,

signal

position "INT."

In

the

signals are

fier.

position

In

the

signal connected

a
position

"EXT.o

"50

Hz" from a

from a winding of

A

fast-rise

sweep-gating

source

is selected by switch

"picked-off"

the trigger

socket BUI

to

mains

mains

the

INT
EXT.

Hz

50

SOURC E

TION

SELEC

SK3

pulses

for

the triggering

multivibrator.

from either

internal

SK3,

two similar,

from the

signal is

"TRIGG."

but anti-

trigger ampli-

derived

from

and

frequency signal derived

transformer.

+

SLOPE

TION

SELEC

SK2

SK1

or

in

the

the

selection

aid of

positive

Fig. 43,

SK2,

or negative slope of

3. Slope
With

on
signal.

is achieved

This

by

routing
B40l or 8402, Fig. 49
anti-phase signals

8401

of
input is

4. Mode
Mode

This
line

and

always kept

selection

selection

permits

pulses

of

appear simultaneously at the

8402.

In

the other

at

earth

is effected

the time-base to trigger on the

a television

frequency signals; while

"free-run

is

a signal.

-^-

will

line

on the CRT) and triggers

SK

1

JLTL

time-base
(horizontal
there

T

V LINE
TV FRAME
DC
LF
HF
AUT

MODE

SE LECÏION

-={

triggering can be

the

the trigger signal to either

(note:

when SK3 is at

positions

of

potential.)

Fig. 43.

by switch

video
in the

"

in the absence

SKl,

signal,

position

on low or

"AUT"

of a signal

as soon

effected

displayed

"INT"

grids

SK3 one

frame

or

high

the

as

Fig.

43.

Trigger

unit

PUL

SE
FORMER
SÏAGE

-150

V

L-

130V

+130

V

+

c4c4

I

A

43

'fV

8.

the
via

Line

and

When a TV video signal

Y-amplifier
switch SK3

"

SK2
The latter works only for
pulses
so arranged that if a
the
order
The
external
positive
Diode
pulse
signal
less than 2 V.
clipped.
The signal

to the Synchronisation

+."

(positive

Y-amplifier

to select

Synchronisation

signal

video

GR40l fixes the base of the

at earth

pulse

above

passes

Frame

TV

is fed to the input
two anti-phase
(at position

video signal) and

positive

input, then

appropriate signal.

the

separator

(i.e.

SK3 at

signal.

potential

2 V. Signals with an amplitude

pass

through

the

to

emitter-follo\ryer

terminal

signals

")

"INT.

Separator

negative synchronisation

the

video signal is

must

SK2

also works

"EXT.")

and diode GR404

provided

undisturbed but are

"picked-off"

are

and fed

via switch

Fig.

see

connections

present

set to

be

that

synchronisation

clips

(TS40l)

stage

"-"

for

it is a

of

44.

are

at
i11

an

all

of

later

-5.3V

and then
pulse
low

The
the

the

In
ation
the

the

to
When
the
crosstalk.
When
trol
voltage
stable triggering under these
The stability control

"PRESET"

fective).

to the clipping

is

fed to emitter-follower

impedance

resulting

pulse

position

pulses

line-pulses

pulse

the TV

synchronisation

SKI

is

switched-out and

divider

output to the

positive-going

former stage when SKI

"TV-FRAME"

are integrated

leaving the

former stage

positions

is at the

at the

position

stage

frame-pulses

(see

are

separator

positions

TV

the level

grid

of

the time-base

in
(the

continuous

TS402.

TS403,

following

pulse

line

is

at

of SKI

clipped.

and

49).

Fig.

not selected

is earthed

the
is determined

in

8402,

conditions.

A circuit

control

resulting

The

provides

which

stage.

fed by

is

"TV-LINE".

synchronis-

the

This

which

the

to

'LEVEL'

to obtain

order

is not ef-

a

C4l3 to

removes

are fed

of

input

prevent

con-

by a

is at the

Y-AMPL.

INT.

sK3

Y-AMPL.INT.

LINE PULSES

sK2

sKl

TV

6R

401

+

6.3V

FRAME PULSE

s403

SEE

BE LOW

27 41

PEM

S

Fig.

Synchronisation

44.

separator

ZE

PEM

27

RO

41

44

DC

b.

position "DC"

In

of SKl the signal

"picked-off"

from
the Y amplifier or external trigger signal is DC-coupled
through the unit to
When SK3 is

at
amplifier are fed to
keeping hum
In this mode
ging

the

level at B40l

and drift to a

the control

DC-level

(see
Resistors R4l4
pedance,
work,
trigger.
remain

against which

is

the same for

Thus

the level

the same.

pulse

the

"INT. "

former-stage.

two

the

outputs from

the balanced amplifier

minimum.

"LEVEL

at 8402

"

is

grid

and hence the

effective

Fig. 43).

R4l7 R416

ensure that the im-

the level control voltage has to

in all

DC-coupling

positions

both AC and

range

Y-

the

and assist in

in chan-

anode

the

of

of SKI

will

c. LF
Coupling
with

from the

a time

trigger

constant of 56

source is via C4l8

milli-seconds.

and

C406,

HF

d.

low

As for

C407

time

AUT

e.

In this
potential.
A circuit

base
unit thus

With

signal)
at the
gered

Controls

frequencies

and therefore rejects

constant is

position

The

is

coupled-in

free-runs when

giving

an input

the

auto-stability

anode

of 8402

operation.

"STAB

but with coupling via

the lower

micro-seconds.

80

of

SK I both valve

auto-stability

by SKI to ensure

no

input is

rise

to a line on the CRT.

the

to

trigger unit

circuit responds

and

sets the S.G.M.V.

"

"LEVEL"

and

grids

detector

present

(resulting

aÍe

C4l6

frequencies.

are

at

in

the time-base
that the

at the trigger

in

a trigger

the

to

for

not

effective.

and

The

earth

time-

signal

trig-

Ipeok

Ivottey

Fig.

45.

0

Vpeok

Vpeok

Tunnel-diode

Vvoltey

character ist ics

Ipeo

k

ia

ih

tB

TvotLey

TI

V_1

Vrr

I

PEM

27

4l

VË

Fig.

7\

VB

Tunnel-diode

46.

-\­è-

\

vs

\=\\\

circuit

vÉ

PEM

2741

Vp

Fig.

Load-lfues

47.

Vï

Vï

V5

PEM

27

4I

45

5. Pulse
The

deliver fast-switching
time-base
diode is shown
Vvarrev

and

Vrr
Consider
diode
that the load-line
viz. A, B,

former

circuit

anode

generator.

resp.

are

I

y

vale

(500

mV),

a voltage-source

via resistor

C, Fig. 47. A

circuit and tunnel diode

B40l comprises

of

pulses

The

characteristic

45.Typical

Fig.

at

mV

60

at which

and 350

the current

Vs

Fig. 46. Vs

R,

crosses the

and B are stable
adjustment, C is not stable.
V', the load-line

will shift

the characteristic

gives

Vs
also
Suppose
adjusted
obtained.

"

Vu

and A'. A single

be obtained

by decreasing R, so

the voltage-source

so that

The

current

only at one

point

parallel

A of the

'r"

tunnel diode

a

for the

triggering of the

of the tunnel

values for Vpear<

mV

at Ipeak : l0 mA

again

is

connected to

R

and

characteristic

can be

lpeax.

tunnel

the

selected

points

at 3

points

If

the voltage

to

point,

point

increases to

itself until

B'. A

it cuts

decrease

of intersection

gained.

B " is

that

and series-resistor to be

load-line

through the circuit

ABC

equals

to

ÍrÍld

so

of

of

can

is

"iA",

the voltage-drop
Vr and
If Vs

the

voltage-drop

increases

to Vr'
characteristic until
voltage-drop

over

increase from Vpeak

the

of

diode.

The

transition

nano-second,

I

from Vr to Vr' happens very

and
itself.
If Vs

decreases again,

"i"

characteristic
switches
When an
DC-bias

alternating

an

be

can

extended

an inductance

by
must

be

until

Vvalev

from

alternating voltage is superimposed

Vr,

the

voltage

voltage with

providing

by

(see

high

compared
low compared with
switches from Vpeak

over

the tunnel

resistor

will

A

surpasses lpeak.

diode will suddenly

due to the

of

B' will follow the diode

Ivalrey.

"

"i

the

to

is

over the
point
just

tunnel

V1'

property

a

point

equals

to Yr".

over the tunnel-diode

steep sides.

very

AC-impedanceformed

an

Fig. 48). The

with

the

the

applied

L/R time-constant

speed of transition

AC. Then the diode

to Vrr.

diode

amounts to

to Vn.

follow the diode

Than

the

characteristics

fast,

about

tunnel-diode

the

Then

the diode

on the
will

be

This

effect

but

Iïig.

48. Transíent

vo,

peakíng

i

0utput

hout L

wit

(V

io

I

i/

\

PEM 2741

46

SK

SKl

l

IITA

trA

R437

Trigger

LeveI

Ce ntr i

I
I

+130V

R-l

438

Fï6-g'.

5ens.

R

/'36

J

r

+130V

lP

Y,?l

H

84

01

+130V

T401

ïs 104

-150V

l----+

c

548

Bsolk

(ssMv)

Fig.

49.

SKl I F

Pulse

INPUT

former

stage

+

130V

8102

+130V

PEM

2?41

Auto

-st

ob.

circuit

Fig.

Frequency

50.

dividing

<-

OUTPUT

PEM

L/n

time-constont

2741

47

In the actual
voltage drop over R438,
presented

The voltage

"TRIGGER

indirectly via tube 8402
(Fig.

43). Together

adjust the

characteristic close to

very

in a

The

circuit

high repetition

maximum

See also
As the voltage

about 0.5 Volts

an NPN

At the

the signal to

collector side a I : I

circuit,

by R440

drop over R438 is adjustable by

LEVEL

load-line

sensitive triggering.

also acts

rate

switching rate

Fig.

50.
drop over

and the S.G.M.V. needs about 2 Volts

transistor

S.G.M.V. input circuit.

Fig. 49,

"TRIGGER

CENTRING"

with R440

so

Vpear

as a frequency divider

trigger inputs as the diode

TS404

Vs is formed by the

the load

grid

that

due to its

the tunnel-diode amounts to

is inserted for

transformer

resistance R is re-

SENS".

(Fig.

"LEVEL"

adjustment

(Fig.

it intersects

êÍrd Vvaue" which

R2

49)

L/R

possible

it is

time-constant.

amplification.

T401

the

for

transfers

R436

49)

diode

results

has

128112v

and

to

very

The transformer
positive
GR403
The
S.G.M.V.
These spikes

6.
After

SENS"
position

a

of
tial
through valve B40l
possible
displayed waveform.
Throwing
signal to
shifted over

(see

negative

Trigger

preliminary

a

"LEVEL"

the

at 8402

going

and
of

to start

the

also differentiates the signal, but the

spikes are short-circuited by diode

Fig.

5l).

going

spikes

occur during

level selection

adjustment with controls

"TRIGG

DC-load

the

potentiometer.

grid

switch SK2

grid

approximately

vaÍy,

to

and

the sweep at

of B40l

the

LEVEL CENTRING" the

line

the tunnel diode.

(+/-)

so the starting

used

are

Vpeaa-to-Vrr transitions.

can

This

thus altering

any

routes

180o.

to

be shifted by

causes

desired

a counterphase

trigger

"TRIGG

means
poten-

the

the current

Thus

it

point

of

point

can be

the

is

the

t

300 mV

"r,

30V

1

128v

Fi2;.

Ff. TRIGGER

trigger

The
unit A with signals having
control
with

each

entirely

The first stage

B45l

and

8452"

and
fying stage. The

high-frequency response

The output

input

of the third stage, which consists of the cross-

coupled

AMPLIFIER

amplifier

it. As

the control-signals are in

other the trigger

push-pull.

in

consists of the cathode-followers B45l'

"

They feed directly into the

.

which

are connected as an ordinary

inductors

of the second

cathode-followers

(Fig.

85)

is

fitted to

L45l

of this stage.

stage is DC-coupled

8454'

provide

an adequate amplitude

amplifier is

L452

and

8454".

and

grids

51. Output of

the trigger

to

counterphase

of

ampli-

The

out

8452'

to the

DC-

carried

improve the

pulse

former

coupling is

combination

the

R458

and the combination R474-8453'-R469). The
tubes 8453'
which

bination

this

In

signals

the

On

interconnection

the
without disturbing
varying
adjusting

R485.

and
adjusted so

PEM

2741

stage

carried out

and

provide

way the reduction
is made
other hand

the anode

a

with

their

comparatively low.

grid

the

Thus

that

by the

of R466-B 453"-R468

8453'

high

dynamic impedance

cathode-resistor Rk

possible

it is

R464-R466

ratio

the

current

potentials

the output

quiescent

its

voltage-divider

high-mu

are a

in amplitude

vary the

to

(resp.

of the

of

tubes.

the

potentiometers

at
of the third
level is

(respectively

double triode

Z in com-

(Z

of the control

potential

R458-R474)

voltage

This

stage can

at earth

R464

and

N

p

Rk).

of

divider by

is done by

R484

be

potential.

48

to

Goining occess

the

A. DETACHING THE SIDE

Caution
Very

that,
ment,
The instrument has one
with
Loosen
frame.

!

high voltages
when

effecting

great

fasteners A Fig.2.

two

the

should be taken.

care

fasteners and

generated

are

repairs to the

plate

pull

PEM 1605

parts

PANELS

in

instrument, so

this

inside

on each side,

panels

the

away from the

of the

each

instru-

fixed

REMOVING THE

B.

1. Single

Pull the knob

2. Double

C.

D.

knobs

Remove cap A
Loosen

Remove cap A
Remove screw B
Remove
Loosen nut
Pull the outer knob

REMOVINGTHEBEZEL

Grip the bezeland
Remove

DETACHING THE

screw

knobs

inner knob

the

C

the

bezel

B

of

KNOBS

the spindle

of

the

pull

back the

REAR PANEL

(see

spindle

lower

Fig.

52)

part

(see Fig. 2)

Fig.

Removing

52.

the knobs

Remove
Pull the

the six

panel

fixing

screws

away from

the

B

frame

Mointenonce

49

A. AIR FILTER

particular

In
environment the
cleaned at

regular intervals.
easiest way with
holder can

fixing

be bent downwards

screws

The filtermat

B.

SEGMENT S\ryITCHES

If,

due to soiling, these
properly
oil,

(code

any longer,

nr. : 97

(see

when

the

filtermats should be

the

(see

D.

can then be easily

I

I).

17

Fig.

70)

instrument

is used in

replaced

is

done

removing

aid of a

Cleaning

vacuum cleaner. The filter

after

Fig. 2)

replaced.

switches should not function

can be lubricated

they

with

a dusty

or

in

the

the two

switch

This oil has
After

tions

CABINET PLATES

C.
If the

washed

be

abrasive

PREVENTIVE

D.

Due to

advised

is

every

cleaning and

lubricating,

a

few

times.

plastic-covered

with water

powder.

the complicated character of the

to check its

500

working hours.

lubricating

the switch

cabinet

and soap;

INSPECTION

operation at

properties.

set to

should

plates

be

are

dirty,

if necessary with

instrument, it

regular intervals

all

they

some

posi-

can

e.g.

R4B5

R31

R484

$.3,

í',

u

150

W'"'

70

!:i::

?4

r;::

t',.i$

iii:

R54

c30

c35
c36

7

R56
R51
R60

FiS.

53. Close-up of

ínput stage of

the

Y-amplifer

the

Unít

I3

111266101

50

Checking

The

tolerances mentioned are factory
apply
They may

A. GENERAL
With the aid

adjustments of the basic oscilloscope

the

proper

the
and adjustitrg, Ír test-unit
In

this chapter
Various
adjustment is

given

be

ond

adjustÍng

when the apparatus

differ from the data

INFORMATION

it is

of these

working

data,

of

the

(PM3361)

is

described

adjustments

described

which

as to

are interconnected. If

prior

previous

is readjusted

given

possible

instrument.

how it

to this an indication will

adjustment is
on that adjustment.
It is
For
quence

B.
With

necessaÍy to

then
a complete

as

described

S\ryITCHING-ON

mains

the

be adjusted to

Plug any

Y-plug-in

the

check that

adjustment of

in this chapter

voltage

adapter the instrument
mains voltage.

local

into the Y-plug-in

unit

the instrument

ment.
Switch

on the

instrument

with the switch

oN".

white

The

should

fans

that after

Check

switched

are

"READY"

The

LOW SUPPLY

C.

is necessary

it

If

adjustments

the

pilot

rotate.

on

to

of

LA8 should light up and

lamp

relay

should

seconds,

REl002.

light up.

25... 35
by
lamp

VOLTAGES

readjust the

supply

the time-coefficients,

tolerances;

in

chapter I.

to carry

and to check

For

is

available.

should

previous

is

be

to

supply voltages

the

voltages,

the

they

completely.

out all

checking

used.

be

such an

dependent

adjustment.

se-

the

preferred.

should

compart-

" "POWER

both

then

calibration

voltage and

the high

again.

low

The
PM3361;

supply

voltages

the latter
in compartment.
nominally

Set
and
Set the
SUPPLY"

" -l

R

By
(R1098)
value.
by the figure
Check

switch

"AMPL.

50".

1098

means

At

the ripple

(Fig.

loaded.

"X-DEFLECTION"

CAL"

test-selector

and

62)

of

the adjusting

precisely

the meter

0.

an oscilloscope,

"RIPPLE'

full

At
test-unit

load

set

and

of the

to
voltage fluctuations
voltage may
Furthermore,
to the
After correct
voltages
should
by the figures

voltages

correct

be
voltages

indicated

6%,
Measure
full-load
voltage
peak

value

value

the

not

check

V

+400

voltage.

adjustment

130 V,

+

be

correct within

4

V,

+70

within

12Y

+

by the figures

ripple

the

(test-selector

fluctuations

of the

indicated

supply

should

By

adjust

voltages

may

be

this,

the

(SKl3)

of

the test-unit

the

should

be checked with

plugged

to

power

(SK7)

"OFF'.

into

supplies

to

to

measuring

potentiomcter

adjust

of the

voltage

connected

"

of

+"

power

"HIGH

the voltage

test-unit

on the

the

test-unit

supply

LOAD")

to the correct

this

-150

V voltage with

to the terminals

(test-selector

and at

of + and -10%, the ripple

exceed 5

on

+6.3

2%, indicated

and

all

the

+200

the

V,

-12Y

mVn-p.

supply

other

-150
V and

the

of
V and

by the

V voltage,

4/",

test-unit.

-70
figures 2. The

of the

V,

+330

a

tolerance of

meter

-6.3

should be correct within

6.

voltage

to

of every

"HIGH

of + and

ripple

voltage should not

in

the table below.

power

LOAD").

-10%,

be checked

test-unit

the Y-plug-

can

"SINGLE"

"POV/ER

range

"-150

is

indicated

on

mains

voltages

+400

indicated

The

V should

supply

mains

At

peak-to-

the

exceed

be

to

V"

the

up

the

V

at

R1025

Power

+130
+200
+330
+400

-70,

R1045 - R1059

-

supply

v
v
V
v

-6.3,

*6.3,

If necessary,
as follows.

Short-circuit
Measure

V,

+200

respect

1t1266101

to earth.

+70

short-circuit

the

the

voltage

the

V

+130

These

(fig.

R1062

-

78

)

V

protection

V and the

+400

the

of

-150

and

must almost be equal to

+400

power

V

Ripple

mVo-p

20

mVo-n

40
75 mVo-p

mVo-n

80

mVp-p

10

can be

-150
V,

supplies

voltage

checked

voltage.

V

+300

V,

with

V.

0

Disconnect
Measure

the short-circuit.

the

normal value

The * and

-70
voltages should
having

been

short-circuited

If

necessary,

R1062
Rr059
R1045
R1025

V voltage.

+400

again.

V,

and

*

also regain

with

adjust

It

-24

V and * and

their normal

to earth.

should have its

-6.3

values

after

V

D.

HIGH

This

CRT.

If

the
the
oscilloscope.

Turn
Measure
on
sary,
ADJ.

R
The

unit

8900 V with respect

+

the

E. MAINS
At a

rent consumption
in unit should
of ll0 V, 125

SUPPLY VOLTAGE

voltage determines

high

voltage is readjusted, it is necessary

horizontal

"INTENS"

winding S 18

adjust

"

1326

voltage on

should have

-1440

mains

and vertical sensitivity of the basic

-1440

the

this voltage with

(R1326).

(Fig.

54)

V voltage.

CURRENT

voltage

not exceed

V

deflection sensitivity

the

to check

(R6)

fully

anti-clockwise.

V voltage with respect to earth

mains

of the

junction

a value between + 8300 and

to earth,

of 200 V, 220 V

of

the basic oscilloscope with Y-plug-

2.5 A,

145 V

or

transformer.

potentiometer

R I

8-C I 313 in the

31

after adjustment

and

it should

or 245 V,

at a

not

If

mains voltage
exceed

of the

neces-

"HT

HT-

of

the cur-

A.

5.5

F.

CATHODE.RAY

Level

1..

2.

X-Y-plates
Interconnect
deflection

R 99

Measure

plates.

of

with
R 320
The

Y-deflection plates
nection point

justed

Remove

Beam

Set

With

brightness.

Adjust
that

played

plates.

(Fig.

55)

the voltage

The voltage

variable

(Fig.

54)

voltage

"X-DEFLECTION"

the

difference

to 0 V

with

the interconnections.

centring

"INTENS

potentiometer

brightness

line.

TUBE

the X-deflection

resistor

and

7 of

the

potentiometer

R314

" (R6)

is uniform

CIRCUIT

difference

difference, which is adjustable

R99,

should

between the interconnected

point g7

holder)

tube

(Fig.

54)

(SK7)

adjust for a line

"BEAM

plates

between

not

of

the CRT

should

"SHIELD"

"50

to

CENT."

across

the

and the

both

exceed 5

(R320).

Hz".

with low

(R314)

entire dis-

5l

Y-

pairs

V.

(con-

be ad-

so

R440

R436 R589

R584

R321

R319

R601 R577 R554

R731

R82

R738

tr

Lnszo

-R318

-R1313
326

Rl

,,-R314

-+9600v

Fig. 54. Top-view

of

the

interior

52

3. Intensity
R1313 (Fig.

54)

"X-DEFLECTION"

"INTENS "
Adjust
time-base
Turn
Select
over

(R6)

potentiometer

line is

"INTENS

such a value

(Fig.

R308

pA).
After

selecting

adjustment

of R I 3 I

potentiometer.

4.

Trace

rotation
R319-R321(Fig.
Check

that

the

rect.

If

necessary
graticule
Display

meters
that
horizontal

is

a

"TRACE

the

time-base

in
time-base

lines

R302

point

to

just

"

(R6)

for resistor

80) is 8 Volts

the

correct value

56)

1Fig.

(SK7)

"INTENS

not

"50

to
of

3

the scale.

visible.

"

(R

fully clockwise.

R302

(cathode

for

if necess

3;

Hz".

I 3 I

that

R302,

aÍy readj

54)

measuring

the

the

correct

graticule

CRT

can be rotated

position.

line

and adjust

alignment

ROTATION " (R319-R321)

line

of the

is written

graticule.

parallel

3) so

that

the voltage

current

check

ust

until

potentio-

the

to the

is

is

the

300

the

this

cor-

the

So,

Focus

5.

and

(Fig.

R324

lnsert

a
(Any

ment.
Apply

a
Adjust
adjust

time-base

the

It should

astigmatism

56)

Y-plug-in

unit

except

sine-wave

trace

height

possible

be

unit

voltage

A

for

to

trace with potentiometers

"ASTIGMATISM"

potentiometer

The

in

tely

its

centre

ent value

6.

CRT Geometry
R318

This
sensitivity
If

the

horizontal

the

for

(Fig.

54)

adj

ustment

of

the CRT.

geometry

R

and

(Rg).

"Focus"

position.

324.

(Fig.

58)

slightly

is readjusted,

vertical
basic oscilloscope.
Apply a
voltage)

square-wave

to

the

Y-plug-in

voltage

into

the Y-plug-in

the

test-unit

to

the

a

triggered

to

6

cm.

adjust

"FOCUS

should

If

necessary,

influences

it is

deflection

unit

and

will

Y-unit.

for

a clearly

be

the

necessary

sensitivity

(e.g.

the

adjust

compart-

do).

display

defined

"

(R7)

approxima-

select

adiffer-

deflection

to

check

of

calibration

peak-to-

the

and

and

the

R89

9401

cs5

9401

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-L32

-R75

^t{

ul4-

L33

R90

R99

REloo2

Fig.

55.

Close-up

of

the

final

stage

of

the Y-amplifier

(UI4)

53

Fig.

56.

Close-up

peak

value

of this voltage

à

18

of
Potentiometer
adjusted for

7. Symmetrical

R328

Set
"AMPL.'

Apply

100 kc/s
flection
Adjust

direction

the

is

cm

minimum

(Fig.

57)

"X-DEFLECTION "

(R10)

a sine-wave

and
to the Y-plug-in
"SYMMETR.

the

measuring

of

rear of

the

obtained.
"PATT.

deflection

display is symmetrical

DIST."
curvature of

fully

voltage with

peak-to-peak

a

graticule.

the CRT

so that a vertical

(R318)

(SK7)

to " 50 Hz"

clockwise.

value for l0

unit.

"

(R328)

So, that in vertical

controls

deflection

should

the vertical lines.

a frequency

with respect

then

be

and turn

of

de-

cm

to

8. Orthogonality
(Fig.

R327

Before

the

that

switch

set
adjust the horizontal
(R

10).

Apply a

the Y-plug-in

to

cm.

6
Adjust
(R327)

to

ular
measuring graticule

57)

this adjustment

geometry

sine-wave

potentiometer

So,

each

has

"X-DEFLECTION

voltage

unit

that

the sides

other.

is

carried out, it is necess

with

(see point

',50

to

"AMPL."

with

of

perpendic-

the aid

Hz"

100 kc/s

of the

been well-adjusted

(SK7)

"

deflection

and also adjust the deflection to

"PERPENDICULARITY"

Check this

on the

to 6 cm

with a frequency

of the display are

CRT.

ary

F6).

and

Fig.

57.

Close-up of the

"Perpendícular"

and

"symmetry"

control

54

During
display

"TRACE
deviation
with R327. After
of

FiS.

G.

the adjustment, always
parallel

to

the

ROTATION"

of the other side

correct adjustment

the display should be

Adjustment

58.

ADJUSTING

of

"

THE DC

horizontal

(R319-R321)

of the display to

parallel

Pattern distortion" control

Y-AMPLIFIER

R82
Before
that the

(point

X-Y

(Fis.

54) R39

carrying out this adjustment, first make

"TRACE

F5)

(Fis.

ROTATION"

adjustment

53)

are correctly
Set the knobs mentioned below
positions:

Interconnect
Adjust
Centre
tiometer
Remove
Interconnect
When using

by
selector

Centre
tiometer
Remove

"X-DEFLECTION"

"STABILITY

"50 Hz AMPL."

the control

"INTENS.

the

time-base

"DC-BAL.

the interconnection

the

control

the test-unit PM336l

depressing

is in

the

button

position

time-base line

"DC-BAL.

the

interconnection.

"

to

(Rl0)

grids

" (R6)

for

normal

line on the screen

(R82).

II"

gfids

"DC-B

"POWER

on the screen

(R39).

I"

adjust one side of the

graticule

lines with

and adjust

minimum

of R327, all sides

graticule

to

the

BALANCE

OF

lines.

THE

sure

(point

F4)

and the

adjusted.

to the following

(SK7)

"PRESET

to

"

"50

Hz"

"CLOCKLSE"

of 84

and

B4'

intensity.

poten-

with

Bl

of

this can

AL."

B1".

and

be effected

while the test

SUPPLY".

poten-

with

the

Centre the spot on

"x.Dc-BAL."

Remove

ADJUSTING THE

J.

the interconnection.

the screen

(R731).

DC BALANCE

TRIGGER AMPLIFIBR
R48+R485

Before this adjustment,
metrical
If this

PM336l
interconnect the control

Measure

(tr'ig.

53)
the voltage levels on

input

of the

trigger amplifier should

measurement

in

the basic oscilloscope,

is

not adjusted

grids

cathode voltage

the

earth and adjust this voltage

"TRIGG.

meter
Also adjust
potentiometer

DC. LEVELI"

the cathode

"TRIGG. DC. LEVEL II"

0v.

Repeat
with

K. INTENSITY

1. External
Remove the

'EXT.'
instrument.
set
Apply a sine-wave

l0
Apply the same
unit.
Adjust "TIME-BASE
\ryith
(R6)

Remove
Y-input and

2. Multi-trace chopper
This check

both

adjustments

respect

to earth

is

0 V.

MOI't'LATION

(BU9)

switch

earthing

and '+o

"z.MoD.'

bar

(sKl4)

voltage

kc/s,

to

terminal "EXT.o.

voltage

to the input

A" for a triggered

correct

adjustment of

an intensity-modulated

the applied

voltage

connect the

can

carried out

be

potentiometer

with

with test-unit

it is necessary

B45l

of

8454

of

to 0 V

and

with respect

with

(R484).

voltage of

8454

until the voltage

between

(8U10)

of

the terminals

on the

position 'ExT.".

to

15 Vp-p, frequency

of the

potentiometer

should be

trace

from BU9

with

bar

the

again.

aid

earthing

OF THE

the sym-

equal.

be

B45l'.

potentio-

aid of

with

(R485)

difference

of

rear

Y-plug-in

display.

"INTENS

visible.

and

test-unit

of

\J

to

to

to

the

"

the

N)JUSTING

H.

X.AMPLIFIER

R731

Short-circuit

valve

support)

(Fig.54)

the control

THE DC BALANCE

grid

of

8705

to earth.

OF THE

(point

7 of

the

Fíg.

59. Z-modulation
mode

when operating

in the

'chopped"

55

PM336l, the test-selector
position

- Adjust

'BLANKING"

"TIME-BASE A'so that it triggers on the

chopper frequency.

"Z.MOD."(SKl4)toposition

-

Set
CHOPPER". The edges
should not be visible.
If this measurement is carried
plug-in
trigger on
case

the blanking
that the
pears

in

SKl4.

switch

Set

L.

ALTERNATE

This check

(e.g.

unit

the

PM 3342),

chopper

frequency internally.

can be

haze

position

(Fi

2).

s.

"Z.N..{OD."

between

both time-base lines disap-

"MULTI-TRACE

position

to

can be carried out with

the test-selector of which

"ALTERNATE".

this should also be set to

"TIME-BASE

Set
coefficient of
Check
from

that the chopper

'TIME-BASE

time-base lines

If a

multi-trace

Au

sec./cm.

.5

should be

position

to

A'.

of which should be in

(CHOPPED).

"MULTI-TRACE

of the switching

out with a multi-trace

it is not

possible

In

checked

making sure

by

CHOPPER"

"EXT. "

should

plug-in

again.

test-unit

in

be

unit is

PM336l

position

"ALTERNATE-.

free-running

is

controlled

In

this

with a time-

case two

by a

complete

displayed.

pulses

to

this

of

used,

pulse

2. Square-waveresponse

-

Set the test-selector

position

to

"RISE

TIME".

- Adjust"TIME-BASEA"foratriggereddisplay;time
coefficient.05

- The

reproduced
flat top.
the rise

If the

amplifier does not meet

it can

be readjusted

-

Set the frequency

psec./cm.

square-wave voltage should

have a

The overshoot should not exceed l/, and

time should

minimum.

be

the above

requirements,
as follows.
of the test-unit signal to

only L32 & L35 fully

only L33

& L36

f

ully

in

in

500 kc/s.

M. Y-AMPLIFIER

For

adjusting

voltages in

18

on an

anti-phase,

V d.c. level and a rise-time

Y-amplifier

the

having

two

square-wave

a value of 600 mVp-p

nsec.

of 2.5

are

required.

These voltages

are

supplied

by test-unit

PM3

361.
Thefrequencyofthetest-unitsignalshouldbeadjusted
to 100 kc/s.

Deflection

1.
R89

Set the

-

Adjust
time

- The

of 4 cm is obtained;

justed

Fig.

60.

coefficient

(Fig.

55)

test-selector to

'TIME

coefficient

BASE A" to

psec.lcm.

.2

sensitivity should

tolerance 2.51. This

potentiometer

with

Vertical

ampltfier

position

'CAL.f

its free-running

so that

be

a vertical deflection

R89.

correctly adiusted

4

cm".

position;

can be ad-

only R75 max.

Fig.6l. Y-amplifier maladiusted

(Fig.

R31

(Fig.

- Adjust "TIME-BASE A"
Time
Turn

53)

C55-L32,33, 350 36

55)

coefficient: 1

"HF

PEAKING"

for a triggered display.

psec./cm.

(R3l)
and C55 fully clockwise.
Adjust
with L32,

-

Select such a value for R90

just

PEAKING"

- Adjust R3l and C55 so that
duced square-wave
and

that

Set the
R51,
Check
flat. Possible

R541C34,
In this

Replace
Apply

10

kc/s

Check
the

top should

minimum

for

33, 35, 36

for

some

overshoot

(R3l)'

the overshoot

frequency

52,

54,56, 60

that the

top of the

sag can

R56iC35,

case

check

the test-unit

square-wave

l0

and

at

c/s

these frequencies

be

distortion

R75.

and

that

with

the

is minimuffi, that the top is

not exceed l%.

does

of the test-unit to

-

C30, 34,35,36,37

reproduced square wave is

corrected with

be

R5 |

lC36

previous

the

by a Y-plug-in unit.

voltages with frequencies

the

to

vertical amplifier.

the

flat.

resistance

R75

R90

fully anti-clockwise

owing to

it is

potentiometer

rise

reflections

possible

time of the

to

ad-

"HF

repro-

flat

100 kc/s.

(Fig.

53)

R52/C30,

R60/C37.

and

adjustments.

of

square-wave response;

56

Frequency-response

3.
After the

square-wave
curve of
unit
frequency
The frequency
for instance,
and the
The

Mc/s frequetrcy,
unit to check the
During
probe
"AC-DC"
probe
an earthing cable

Set the

l0 mV/cm.
Connect output socket
rator via
Y-plug-in
Adjust

Y-amplifier

response

the basic

PM3333 should be

which

exceeds

response

PHILIPS AM-FM

the

PHILIPS HF millivoltmeter

voltages

should

should

with

the

which

-3

measurement

this

be connected to the centre contact of

switch in

directly be earthed, so without

(see

deflection coefficient of

terminated 50-O

a

unit.

the frequency to

curve

has

been

adjusted for correct

(see

L2)

amplifier together with Y-plug-in

so that the

60

curve can be

reference frequency

are

point,

dB

the measuring

plug-in

the

Fig.

63).

"H

4.5 Mc/s.

frequency response

the

-3dB

point

lies at

Mc/s.

measured

generator

GM6025.

applied

F I I

to

should

cable to the input of the

be exactly

unit;

the

the

"

of the auxiliary

GM262l

and

Y-plug-in

the

pin

housing of the

the

plug-in

unit to

with,

60

the

equal.

of the

the

of

use

gene-

Adjust
Increase
value of

should exceed

a

4. Deflection
Insert

compartment

"GAIN

itS
Adjust
Apply

I

80 mVp

of
kc/s to
With

display

to
within
With
trace should

N.

CALIBRATION

R1411

Set
SKl3 to

generator

the

the frequency

the input

4.2
shift

and

the Y-plug-in

of

ADJ.,,

the

deflection

a triangular

-p and

the

input.

the vertical

the upper

the measuring

this

triple

occur.

(Fig.

3)

"AMPL.

CAL."

position

voltage

voltage,

cm.

unit

the

basic oscilloscope and adjust

ANd

coefficient to

or sine-wave

a frequency of approximately 2

SHIFT

and

graticule.

over-driving

VOLTAGE AND

(SK12)

"OFF".

to 60

PM3333

"DC_B

control

lower

for a

6 cm deflection.

Mc/s;

with the same

the vertical

AL.".

"10

voltage with a value

it must be

peaks

no

position

to

deflection

into the

mV

lcm".

possible

the signal

of

distortion

CURRENT

'80"

plug-in

of

the

and

R1 098

R39

-81

ul2

FS

Fig.

62. Close-up

of the

stabtlising

circuits

of the

poy)er

supplíes

57

Measure

the
with respect
(Rl4Il)
Set
measure

The
calibration
mined

In all

"AMPL.

available
In
bration
When
GM6020)
tween

adjust

"AMPL.

the

accuracy

current

precision

by the

positions

CAL."

with

one

of

the

voltage

a sensitive DC-voltmeter

all values

BU6
can be measured
Measure

the symmetry

DC-voltage

to

earth and with

voltage

this

CAL."

calibration

of the calibration

are,

after adjusting

resistors

of SK

(BU6)

junction

at

to 80

(SKl3)

voltage.

12,

check

square-wave

a

"CAL.

V;

tolerance < 0.5%

position

to

voltages

of the

a frequency of 2 kc/s.

positions

on BU6 with

of SK 12,

SK l3 in

is

also check

used

of the calibration

and the corresponding

"mV

position

in

"

of

of the square-wave

R1410-Rl4l7

AMPL.

uY'

and

and of the

the 80 V,

deter-

attenuator.

that on socket

voltage

is

the cali-

position

"mY

"

(e.g.PHILIPS

voltage

earthing

13.

SK

be-

socket

voltage

"

O.

.

The sensitivity
that,
generator,
To measure
with accurately

by

connecting
ing the
This
(within
cated
Set
A
current
shape
Set
There

average

should

l0%)

on

the

SKl3

to

square

wave

bracket

as

the calibration

SK I

3

to

should

X-AMPLIFIER

when driving

the correct

the time

DC-voltmeter

a

value.

be

equal

of

the calibration voltage

plate.

text

position

with

to

"4

current

the same

half

mA".

should

the

voltage.

position

"OFF ".

be no voltage on

of

the

time-base amplifier

this

amplifier

time coefficient is

coefficient, a

known

frequencies

BU6

to

and measur-

peak-to-peak

which is

flow

through the

frequency

output

and

socket

is so

adjusted,

BU6.

with the time-base

obtained.

number

of voltages

are required.

value

indi-

pulse

Fig. 63.

Measuring

the

frequency

characteristíc

{"M

plÍlLl9

$0

s8

Deflection coefficient

1.
R738-R554

Insert

(Fis.

unit PM3333
ment; apply time
2 msec. to the
Set the

"TIME

lcm"

input of the

following

(SK4)
"MAGNIFIER"
"TIME/cm" (Rl)

Adjust

"LEVEL

"

Adjust the sensitivity

"

ADJ.

(R738)

exactly 8 cm

So,

(symmetric

the screen).

For

the following

potentiometer
erly adjusted

2.
R714

Output

preamplifier

(Fig.

Set time-base A

just

the time-base

the centre

to

points

"TB

point

(see

3

)

to its free-running

of the screen

54)
into the

markers at

Y-plug-in

intervals

compart-

precisely

of

Y-unit.

knobs to

"2

to

(SK8)

to " x1".

"CAL."

to
(R2)

for

with

that

with

2

and

LENGTH

indicated

the

msec.f cm".

stationary

a

potentiometer

pulses

8

have a width of

respect

it is necessary

3
"

(R54)

positions:

display.

"X-GAIN

the centre of

to

that

has

been

Q7).

position

and ad-

line symmetrically with respect

with

"SHIFT

"

(R4-R5)

the

prop-

"X-DEFLECTION

Set

connect

and

"X-PREAMPL

with
put

level of

of

centre

Remove

Horizontal

3.
time-base

Set
adjust
With
place
over
With
the

4.
C707

Set

"MAGNIFIER"

"SH

the

the

"VERNIER"

trace

Square-rvave

(Fig.

the

time-coefficient
cm".
Apply the

the Y-plug-in

to
which has

"

socket

preamplifier

the

(SK7)

"EXT.

LEVEL"

"

(BU5)

so,

position

to

to

earth.

(R7la)

that the

adjust

the screen.

the

earthing connection

from

BU5.

shift

A to

"

(R4-R5)

I FT

beginning

centre of

its free-running

(SK8)

it should

and the end of

the screen.

(R5)

it should

position

position

to

be

the time-base

possible

be

approximately 1.5 cm.

response

64) C70l

(Fig.

3)

of

time-base A

to

sawtooth voltage from time-base

unit,

been

adjusted

the

deflection

"20

to

Y f cm".

coefficient

"EXT.'

the our-

spot is in

"

possible

to shift

".2

mseci-

(BU3)

A

and

x

line

the

1".

to

of

;**}iË'fïr

53É,

ff*]]f S$Í,.&S#U

"fr

ï31

K;ffi{sW

fr

?3&

ffi.f'.

c709

fr707

Fig.

64. Close-up

of

the

X-ampltfier

Apply

a
amplifier
BU6

to

Apply

this voltage

for

triggering

"X-DEFLECTION

Set

After

having

mer

C707
duction
The

deflection
should
So

7.2 ...8.8

Fig.

Horizontal
applied
and

amout

the

65. X-ampltfier

to

"|:

l0

square-wave

by

connecting

terminal

of the

length

"EXT. "

time-base A

adjusted

should

square-wave.

coefficient

to

.5

of

cm.

also

be

V/cm;

the

step-response

'l.

ri

Hor.

l;

deflection with

"EXT."

EXT."

(BU5);

respectively.

voltage

calibration

(BU5).

to

terminal

externally.

"

(SK7)

for

a stationary

adjusted

on socket

tolerance

time-base

deft.

voltage

SK7

4

of

Vp

"TRIG

position

to

for

optimum

l0%.

line

I

:a;

of 4v

positions

in

to the X-

-p

voltage

G.'

display,

"EXT.

amounts

and 40

socket

(BU

"EXT."

trim-

repro-

"

(BU5)

V resp.

"EXT."

to

59

P. BEAMFINDER

Before

)

sensitivity
adjusted

Y-direction

X-direction

I

carrying

(see

Turn

the
clockwise
without

"BEAMFINDER"
Y-amplifier
positions
is

displayed

"X-DEFLECTION

Set

"STABILITY"

Set

GER

MODE"
Without
trace

may

Check

that

the

time-base generator

position

the screen.
At

the

same

be so

reduced

5 cm.

out

of

the X-

points

"SHIFT"

and fully

an input

is

decreased

of

the

within

(SKl)

an input

be visible.

by

depressing

and that

time,

that

this

check, it

and

Y-amplifier

Ll

and Nl).

control

signal,

"SHIFT"

the measuring

(R3)

signal

the

the

of the Y-plug-in

anti-clockwise,

check

(SKIO),

So,
control

"

(SK7)

"PRESET"

to

"HF".

to

on

"BEAMFINDER"
is

time-base

horizontal

the

deflection

is necess

that by

the sensitivity

that in

to

the Y-plug-in

set to

line is

ary

has

been

resp.

depressing

both

the time-base

graticule.

"TIME

sensitivity

BASE

and

its free-running

displayed on

does not exceed

that

the

correctly

unit

fully

of

the

extreme

line

A".

"TRIG-

unit,

no

(SKIO)

should

"X-DEFLECTION

Set
EXT.".

Increase
trimmer
square-wave
In
on
tolerance

should
(SK8)
both

5. Frequency-response
Set

Apply
kc/s

tude
Increase
(keep
flection

6.

50 Hz X-deflection

Set
It
deflection

In

this

have

the input

C701

for optimum

voltage.

position

terminal

positions

"X-DEFLECTION"

to

that

"X-DEFLECTION"

should

position

no influence

"l

: l0 EXT."

"EXT.

(the

l0%

anount

should

a sine-wave

terminal

the

the

should

to 7.2

have

of

"EXT.

a horizontal

frequency

amplitude

then

possible

be

from

0

of

sK7,

on

"

SK7.

to

the display.

)

"

(SK7)

voltage

(BU5)

no

curye

voltage

exceed 5.6

to 40

the

should

length of

8.8

cm).

influence

of

the

(SK7)

with

"

(BU5)

deflection

of the

input

constart);

(SK7)

to adjust

8 cm

with

"MAGNIFIER

position

to

Vp_p

and

reproduction

deflection

amount

the

on

preamplifier.

position

to

a frequency

with

of

8 cm

voltage

the

cm.

position "50

to

for a horizontal

potentiometer

coefficient

to

time-base

"MAGNIFIER"

the display

such

an ampli-

is obtained.

to

horizontal

"

(sK8)

"l

:

adjust

of

the

5 V/cm;

line

"EXT.".

of l0

I

Mc/s

de-

Hz".

Rl0.

should

l0

in

TIME.BASE

Q.
For

the

next

mentioned

positions.
"TRIGGER
"TRIGGER
"X-DEFLECTION"
"MAGNIFIER"
"STABILITY"

If

a different

description

Stability

1.
(Fig.

R577

"LEVEL

Set
Apply
kc/s
height
Set

Turn
clockwise.
till
Check
no
should

a sine-wave

to

Y-plug-in

to

"TIME/cm"

potentiometer

a well-triggered

the triggering

dual

be slightly

A AND

checking

switches

MODE"
SOURCE"

(SK8)

(R3)

position

of

the regarding

54)
"

(R2)

cm.

3

From

traces

TRIGGER

and

should

(SKl)

(SK3)

(SK7)

"

to
"PRESET"

to

is required,

to the

voltage

unit

PM3

(SK4)

to

"PRESET

position,

this

display

with

should

readjusted.

UNIT

adjusting

to

to

x

check-up

centre

position

is obtained.

different

occur. If necess

points,

be set

lo

333 and

to the

"HF"

"INT."

to

"TIME-BASE

this is indicated in

or adjustment.

position.

with

a frequency

adjust the trace-

"l

psec/cm".

"

STAB.

turn

(R577)

anti-clockwise

coefficients:

time

below-

the

following

A"

of l0

fully

R577

ary

the

ó0

2. Trigger sensitivity
R440-R436

Set'STABILITY"

-

Switch

-

(Fig.

'LEVEL"

í)

(R3)

"PRESET".

to

off by short-circuiting the contact

on switch SKIF to earth.

- Apply such a voltage to Y-plug-in unit

trace-height amounts to I mm. This can be easily

the

done by applying the
the input of the
of which should be adjusted

"TRIGG.

Turn

-

and adjust

"LEVEL

200 mV calibration voltage

amplifier, the deflection coefrcient

'2Ylcm'.

to

SENS."

(R440)

SENS."

(R436)

PM3333

fully anti-clockwise

running

for a
display.
Turn R440 slowly clockwise till a stationary display

­is

obtained.

With R436 adjust for a running display

­turn R440
Repeat the adjustments of R436 and R440

­no longer
trace
Next set R436

­where
Remove the earthing connection from

-

clockwise

possible

with R436.

to

triggering occurs.

a stationary trace

till

to adjust

the centre

for a running

of

the control range

again

is obtained

till
or dual

SKIF.

3. Trigger slope and level
Apply a sine-wave voltage of l0 kc/s to the Y-plug-in

-

unit and adjust for a trace-height of 6 cm.
Set the trigger slope switch

-

(SK2)

The time-base should start on the

of the sine-wave.

edge
starting

It must

-

should occur on the negative-going

possible

be

continuously across

potentiometer

\ilith

-

With

'LEVEL"

(R2)

clockwise, the time-base

With SK2 in

to shift the

the entire trace-height of 6

'LEVEL"

(R2).

fully clockwise as well as anti-

generator

position

to

positive-going
position "-",

edge.

starting

should not

operate.

4.

Internal triggering

FRAME

TV

Set

-

-

Apply

"TRIGGER

positive

a

MODE"

video

(SKl)

to

'TV

FRAME".

signal to the Y-plug-in

PM3333.

-

Set

"TRIGGER

-

Check that,
a trace

with

is displayed,
synchronization
In

this case

nization

the trace

pulse.
Intheposition "TV
should have

TV

Set

­Apply a positive

-

no

influence.

LINE

'TRIGGER

SLOPE"

a trace-height of 2

pulses.

FRAME',

MODE'(SKl)

video

(SK2)

to

"-".

cm minimum,

which is triggered on the frame

will start with a frame

"LEVEL"

"TV

to

signal to the

svnchro-

"STAB."

and

LINE".

Y-plug-in unit

PM3333.

that

to

and

it is

"f

point

cm

unit

"TRIGGER

Set
Check that, with

trace is

a
synchr

this

In

zation

In

the

should

DC

R484

Before

the balance

that
amplifier

displayed,

onízati

case

pulse.

position

have

no influence.

(Fig.

this

measurement

has

been correotly

SLOPE"

a trace

pulses.

on

the trace

"TV

53)

of

(SK2)

height

is

which

start

will

LINE"

the

,"LEVEL"

is carried

Y-amplifier and the trigger

adjusted

"-'.

to

(see

minimuh,

on

and

points

the line

"STAB."

G

and

of 2 cm

triggered

with a line-synchroni-

out, it is necessaÍy

r).

"TRIGGER

Set
Apply a sine-wave

to Y-plug-in

kc/s

of

height
Adjust
"TRIGGER
base
readjustment of
With
around the centre
Set

"LEYEL"

".

positions.
Adjust
(R484)
SLOPE
Set
triggering occurs.
When shifting

of
the
same

LF

Set
Apply a sine-wave
to
height of 3 mm.
It
with

Note:

higher frequency

"Y-SHIFT"
influence on
with

3 mm.

"LEVEL"

generator

"Y-SHIFT"

"TRIGGER

potentiometer

so that in

"

(SK2)

R484

the

time-base line

edge of

place

"TRIGGER

the Y-plug-in

must

be

this

input voltage

It

is

"LEVEL"

MODE"

unit PM3333

SLOPE"

keeps

"LEVEL"

of the screen.
MODE"
"SHIFT"

and

both

a triggered

to the

centre of the control

the trace vertically,

the sine

on the

screen.

MODE"

unit PM3333

possible

easier

to

of

the Y-plug-in

of

trigger level which

the

(R2).

(SKl)

voltage with

(R2)

So, that

(SK2)

operating,

(R2).

adjust the trace

(SKl)

in the

"TRIGG.

positions

display

should shift

wave, but

(SKl)

by

preset

input

the

with

means

voltage

to trigger

"LF"

to

a frequency of l0

adjust

and

when switching

from * to

should

and

the

"LEVEL"

voltage.

-,

without

symmetrically

"D.C."

to

above-mentioned

DC

"TRIGGER

of the

is obtained.

range

the starting

smoothly

remain

"LF".

to

frequency

a

adjust

time-base

"LEVEL" (R2).

of

(R2)

may

unit

has been

for

a trace

the time-

requiring

and leave

LEVEL I"

in which

point

over the

at the

c/s

of 3

a trace

for

generator

with

no

have

adjusted

a

61

HF

"TRIGGER

Set
Apply a
to
height
V/ith
obtained.

Increase
and 3
height
It must
with the input
With
it must
at

AUT.

R58GR589
Set

Turn
(R589)
clockwise.
Without
tiometer
turned
appears;
Apply
Y-plug-in
of

Turn
fully

base

"TIME
Vary
From
time-base
input
V/ith
time-base
Without
remain
Check
trace

10

position "

In
have

External

5.
Set

Apply
Vp
been
Adjust
and set
After
base
voltage

sine-wave

the

Y-plug-in

of 6

this l.f.

Mc/s respectively

of 3 mm.

be

an input

be

a trace height

"TRIGGER

potentiometers

and

so

a voltage

3 cm.

potentiometer

clockwise;

generator

cm" (SK4).

the

maximum

voltage.
a

trace-height

visible.

that

height

c/s

and I

no

influence.

"TRIGGER

to

from

-p
connected

the frequency

"TRIGGER

correct

generator

on

MODE"

voltage

unit PM3333

cm.

voltage no triggered

the frequency

possible

voltage

voltage having

possible

(Fig.

"AUT.

input

voltage

"AUT.

far

clockwise,

then turn

unit PM3333

triggers.

trace-height

generator

generator

input

voltage

the

time-base

of 8

mm

Mc/s.

AUT.",

triggering

"EXT."

the

same source

to the

adjustment

should

terminal

of

to trigger the

by

to trigger

of 8 mm.

54)

MODE"

FREE-RUN"

on the Y-plug-in

FREE-RLJN.

R584 l5'

with a frequency

"AIJT.

next

anti-clockwise

Check

from 0

5 mm

should

lower than the trigger

should

maximum

at

"LEVEL"

SOURCE"

(BUl)

Y-plug-in

of

MODE"

"EXT. " (BUl).

(SKl)

with

the

and

means

(SKl)

"AIJT.

that a time-base

and adjust

TRIGG.

up to

the

generator

a sine-wave

as

the

"LEVEL"

of

be triggered

"HF".

to

a frequency

and

adjust for a trace

display should

input

voltage

adjust for

time-base

"LEVEL"

of

frequency

a

the

time-base

"AUT."

to

TRIGG.

(R584)

"

(R584)

further

to 6 cm.

be triggered

time-base line

(SK3)

input

clockwise.

of

for a trace

LEVEL'

until the

this on all

6 cm trace-height the

remain

is

with frequencies of

"STAB. "

and

to

the voltage

unit.

voltage to l0 kc/s

SKI to

by the

of 3 c/s

to 2kcls

a trace

generator

(Rl).

of

Mc/s

30

generator

LEVEL"

fully

anti-

poten-

unit,

should be

just

line

10 kc/s

height

(R589)

time-

positions

the

with

limit the

free-running.

should

triggered at a

should

'EXT."

voltage

"HF".

(R2)

of 0.3

which has

time-

the

external

be

to

of

-

Now

remove

the voltage
time-base generator
ger

and consequently

should

the time-base line should not

from

"EXT."

(BUl),

not be triggered any lon-

be visible.

6. íf Hz Triggering
Set

'TRIGGER

-

-

Apply a sine-wave voltage with the mains frequency

SOURCE"

(SK3)

to'5OHz'.

to the Y-plug-in unit.

"TRIGGER

-

-

Set
With

"LEVEL"

MODE"

(R2)

be triggered on the internal voltage

(SKl)

to

the time-base

'LF".

generator

with

the

should

mains

frequency.

-

It should
time-base

possible

be

generator

to shift the starting

over the edge of the
for more than 150" with
PHASE"

Timebase amplitude

7.

Rssa

(R10).

(rig.

5a)

- Plug unit PM3333 into the
apply time

and

"2

msec." to the

-

"TIMElcm'(SK4)

Set

markers at intervals of

Y-unit.

to

potentiometer

Y-plug-in compartment

msec.lcm" and adjust

"2

point

sine-wave

'50

precisely

for a triggered display.

- Adjust

length of

- In

potentiometer

the time-base line

positions

all

of SK4 the length

line should exceed 9.5

Time-coefficient and linearity.

8.
508,515,530

C510,

(Fig.69)

C711,

Before
necessary that

this check and adjustment

the sensitivity of

has been correctly

Apply a sine wave voltage

-

the Y-unit and

(Fig.3),

adjusted

set the control

"TB

cm.

(see

LENGTH"

to l0 cm.

C709

the time-base

point

precisely

of

knobs

(R554)

time-base line

of the

(Fig.

6>, C7lO,

is carried

Nl).

l0 Mcis

to the

out, it is
amplifier

following

positions:

"TIME/cm" (SK4)
"MAGNIFIER"
"TIME/cm"

three

(R2)

periods

Adjust

­With trimmer C5l0 adjust

-

"LEVEL"

that the last

(R1)

for

".05

to

(SK8)

to

"CAL."

to

a triggered

the time

together

have a

Psec/cm"

"xl"

display.

coefficient

width

6 cm.

Apply

-

the
With C709, optimally adjust

­Repeat

-

(SK8)
Apply a sine-wave voltage

-

a sine-wave

Y-unit and

the adjustment

'x

to

5".

voltage of

set'MAGN."

precisely

(SK8)

linearity.

the

of C5l0

precisely

of

to

with

"x

50

50

Mc/s

Mc/s

5".

"MAGN.

Y-unit.

The

of the

Hz

for a

to

so,

of

to

to the

62

With C7l0

-

optimally adjust the linearity and then

check the time-coefficient.

- Adjust

C5l0 so that 4

periods

tolerane,e l\.

- Measure
8 cm
Apply

-

the Y-unit

periods

4

-

Set

-

With C71l optimally

the time-coefficient and the linearity

(symmetrically

around the centre of the screen).

a sine-wave voltage of

and set

should

"MAGN.'(SK8)

"MAGN.'(SK8)

have

a width of 8 cm, tolerance

to

adjust

check the time coeffiecient:

periods

l0

-

Set

-

Apply

should have

"MAGN."

(SK8)

to

a sine-wave voltage of

a width

the Y-unit.

"TIME/cm"

Set

-

-

With C508 adjust the
periods

have

- Apply time markers
to the Y-unit

(SKa)

to

a width of 8 cm; toleranc,e

at intervals of

and set

"TIME/cm"

cm'.

- With C530,
periods

-

Apply time markers
to the

adjust the time-coefficients

have

a width of 8 cm, tolerance

at intervals of

Y-unit

and set

"TIME/cm"

cm".

-

With C515, adjust
periods

-

Check the time-coefficients
tions of
inposition
Always
pond
each

have

'TIME/cm'(SK4),

"x1".

select the time intervals

to the time,

position 8 periods

the time+oefficients

a width of 8 cm; toleranc.e

selected by

tolerance2.5\.

'TIME/cm"

Set

­check
positions

position

For
kers

at intervals
applied to
Check

periods

8

position

For
at intervals

the time

the time coefficients

(SK4)

coefficient with

"x2"

and,

"x2'

the Y-unit.

should

have

"

x 5 " of

precisely

of

to

"x5".

of

precisely

of

a width of 8 cm;tolerance4/,.

"MAGN.'

to the Y-unit.
Check the
should have

positions

In

the

(LA6)

should

9. Continuous
When "TIMEfcm"
from

its

continuously

position

in

time-coefficients

a width

'X

2'

be aglow.

control

of the timecoeÍficients.

(Rl)

'CAL'

position,

be increased

"CAL'.

of 8 cm;

and

is

have

a width of 8

precisely

position "

the

linearity and

of 8

position "x

precisely

psec./cm".

".1

"x

to

2".

x

cm

;tolerancn

1".

50 Mc/s

l0

time-coefficient so,

l%.

precisely

(SK4)

to

l/,

precisely

(SKa)

to

ly,.

in

remaining

all

"MAGN."

with

so

that they corres-

'TIME/cm'(SK4).

should have

position

a width

"2

msec./cm"

"MAGN.'(SK8)

"MAGN."

(SK8)

I

msec. should

as follows:

(SK8)

time markers

.2 msec.

should

as follows: 16 periods

tolerance 4/o.

"x

5",

the lamp

turned fully
the

time-coefficient

up

to > 2.5

anti-clockwise

times the value

cm;

over

to

5"'

4f.

then

4f.

Mc/s to

that 8

psec.

I

psec./

"l

so, that 8

psec.

100

msec./

".1

so, that 8

posi-

(SK8)

In

cm;

of 8

and

to

time mar-

be

be applied

"MAGN.'

should

10. Single
R60l

Set

"X-DEFLECTION"
"MAGN."(SK8)to
"STAB."
"TRIGG.
"LOCK

Apply a

I
Adjust
Then
Adjust
depressing
always written
length; then
Set
depress
button

When SK3 is reset

should be written

11. Output terminals

Set
time-coefficient of
The
available

/

Fig.66. Output

time-base

(Fig.

54)

the knobs

(R3)

SOURCE"

OUT

sine-wave voltage with

kc/s

to the Y-plug-in

"LEVEL"

"X-DEFLECTION"

set

"LOCK

"RESET

"TRIGGER

"RESET"

should

BASE

A"

time-base

synchronous

on

/

J

J

base"

to the following

"PRESET"

to

LEVEL"

(R2)

OUT LEVEL"

just

turn

SOURCE'

light up.

(BU4)

A to

output

/ / ïrou::::T"^onBU3

wave-Jorm

busses

positions:

(SK7)

"xlo

(SK3)

unit.

for

"

(SK9)

once

R60l

about 15"

(SK9).

to

once and B516 should extinguish.

"+GATE" (BU2)

its free-running

".1

msec.f

voltages

terminals BU2

t-

J

"TIME-BASE

to

"INT."

to

(R601)

position

anti-clockwise

a frequency of

a triggered

(SK7)to

repeatedly,

across the entire time-base

(SK3)

Lamp

cm".

of

"

of

(601)

further

to

8516

"INT.

position,

Fig.

and

gSv

Ï

t

J--'

aGate"

display.

so,

66

Voltage-

ÏME

A"

"SINGLE

that when

the trace is

clockwise.

'EXT.'

push-

in the

",

the trace

"TIME-

and

with

should be

BU3.

-on

+

GATE

BASE A

"Time-

and

A"

and

BU

2

a

63

Replacing

A. FUSES
The instrument is

When one or
cause.
Note:
If

instrument

the

145 V, fuses

or

B.

MAINS

Remove
Unsolder
Remove
Remove
instrument.

The

transformer

instrument.

FANS

C.

Detach

-

Remove

at the
Unsolder

The

fan can

it

outwards

Caution !
When remounting

connection

the
same connection

wires

the

parts

both

of 8 A should be fitted.

TRANSFORMER

the

cabinet

the transformer connections

both screws at

four fixing

the

rear

the

the three fixing

upper

side of

motor

the

then be

causes

protected

fuses have

used for mains

is

plates

the

screws

is

free

then

panel

the fan

connections

taken

the fan

wires

to the

points

magnetic

screws

from

of

by two fuses.

blown, first locate

voltages

rear

side.
at

the bottom

and can

care

motor
the motor.

hum.

be taken

of

the retaining

the frame

should

be

are

soldered

Interchanging

the

of I 10, I25

of

the

from

the

ring

by

bending

taken

t)rat

to

the

Remove
tion
Remove

metry
The
pushing
tion.

F. TEXT

Remove

Remove

Remove

Remove

and

Remove

CAL"
Remove
Unscrew

of

Remove
graticule
Pull
instrument
fittings
Remove
Remove

plate

Remove

PRINTED-\ryIRING

G.

Fig.

Pull

wards

Pull

(plug-in

both connection

plates

(marked yellow

the

adjustment.

tube

then can

it

out of

PLATE

kobs

the

the terminals
the current
the central

"RESET"

the

the central fixing nut of the switch

the bezel

the

the

bezel

the

illumination

mounting

the

and

of

the

mounting

the

the

the text

62

the fixing

printed

the

connection)

wires from the X-deflec-

and

grey-white

be removed

the screening

four fixing

plastic

unsolder

lamps

three screws at the

strip FS

wiring

connection

and the

bracket

fixing nuts

switches

screws

sleeves

lamps

plate

of the

plate

plate

from

BOARDS Ull

outwards

boards

from

pipe

of

of

from the

bezel slightly

connection

the

the

grey)

wire of the

instrument

the

in forward

sockets

"POWER

the

mounting

the

fittings

bottom

frame

and

from the

direc-

"AMPL.

of the

from

wires of the

of the text

AND

it down-

turn

instrument

geo-

by

ON"

plate

the

UI2,

D. PO\ryERTRANSISTORS

Remove
Remove
As
made
remove
screws.
When remounting
two
The
kgcm.

E.

CATHODE-RAY

Remove
Remove
Remove
Remove
power
Remove
tion

the rear

the

the

connections

by means

the transistors

insulation plates

screws

the
the
the

the

amplifier

the

coils

panel

unit

with

of contact

the

should

be

TUBE

protective
anode

cap

tube

sockle

four

connection

and

four

connection

the
of the

after

transistors,

are fitted

tightened

cap

filter

ON

power

power

springs,

unscrewing

underneath.

wires

THE

supply

it is

ensure

with

wires

from

REAR

PANEL

resistors

transistors

possible

the fixing

that

a

torque

between

the deflec-

are

to

the

of 8

the

}I. HT
After

plate
unit can

J.

All
types.
After replacement
may
For this
New
ment
Aging
instrument
(In
triode connect
The
filament
valve is
rent.

UNIT

removing

can

then

VALVES

valves

and semi-conductors

be

necessary

see
valves
for

100

can

case

of

anode

voltage

116

the

be removed.

be

easily replaced.

AND

to readjust

chapter

can be

hours.

also

be

by

connecting

pentode

a

the

voltage

of

the

two fixing

The components

SEMI-CONDUCTORS

of valves and

"Checking

VIII

aged by

carried out

connect the

grid

to the

must

be so

quiescent

the

maximum

screws,

are

relevant

the

switching

valves

the

anode.)
selected that

permissible

normal

semi-conductors

and

separately

as a

grids

current

screening

the

of the

production

circuits.

adjusting".

on the

from

diode.

in case of a

and

at a

through the

cathode cur-

HT

it

instru-

the

normal

g

I

nformotion

in

faultfinding

for

ossÍst

A. MAINS TRANSFORMER

The available unloaded
Fig.

67

The

loaded transformer
circuit
They are

meter

GM60l2.

form

in

the

diagram.

measured across the

B. VOLTAGES

voltage tappings are listed

of a table.

voltages

AND

IVAVEFORMS

APPARATUS

DC-voltage levels

The
measured

under the following conditions:
SWitCh
SWitCh

"X.DEFLECTION

"AMPL.
PM3342
PM3347

They are
values
The

measured with

may

differ between

ripple voltages

plugged
plugged

in

CAL. " tO

into

the

into

the

the

various

measured

are

GM60l2.

in

voltages

The
to earth,
sured

except the voltage on C1307

free from earth.
The voltages in
voltmeter
balance

GM6020 with respect

has

been well-adjusted and the

HT

the

the

unit

Y-amplifier are

on the screen.
The voltages

in

the trigger-amplifier are

the voltmeter GM6020 with

"MODE "

The
position
The

trace should be

The

voltages

with

voltmeter GM6020 with

switch of unit

"ADDED".

in

the

centered

horizontal

once

VOLTAGES

indicated

are

windings with a volt-

IN

power

the

"

tO

"OFF"
Y-plug-in
X-plug-in compartment

voltmeter GM6020.

measured

are

respect

PM3342

on the

amplifier are

respect to earth.

supplies are

"SINGLE

compartment

apparatuses.

with

the

voltmeter

with

which is mea-

measured with

trace

The

is centered

to earth.

measured

earth.

to

should be set

screen.

measured

A"

respect

REMARKS

C.

in Whenever it is desired to sent the

in

the

PHILIPS workshop,
observed:

carefully
ing,
indicate

pack

or, if not available, in a wooden

as completely

following

the

the apparatus

of the faults,

THE

The

-

tie on a lable bearing name and address

send

the instrument to the

address

provided

o

52 S4 53 55 58

ooaoooooooo
aooaooooooo

o

S13o

0 0

s14
S15 o .

0 0

s15
s17 0 0

0 .

s19

by

the

59

o

the

DC-

with

to

CODE
ÏURNS

VOLTS

CODE
TURNS
VOLÏS

Fig. 67. Mains-transformer

s1b

S1o

3ó

45 246 187

1520110

S9

s10

337

178 155

150,579,5

S1

S2 S3

83,5

s11

69,2 72

1615534

72

s12

s13

151 15

6,'l

in

possible

as

appropriate

organisation.

local

56

S1O S11 57 S12

Scr

oo

S4

S5

29

1\Z 15,22972

s14

s15

15

15

6,'l

6;r

data

instrument to a

points

should be

the original

crate.

symptoms

the

of sender,

PHILIPS

oS18

o
o

S20

o

o

o

51'

os1"

o

o
o
o

S1

b

o

S6 S7

S8

34 55

151

s16 s17 s18

15

6;l

s19

15

15 59

26,5 26,5

6J

6:l

PEM

2731

pack-

s20

59

65

Fig.

68.

Components at

the

front

66

R

:;,

"=-*ffi

Ei.--""-''*#-

c71

c71

Fig.

69.

Components

of

the rear

22

23

67

Fig.

70.

Filter-mat

68

Fig.

71.

Components

at

the

interior

(left

side)

RE

69

1003

Fig.

72.

Components

at

the interior

(rear

panel)

70

list

se rvice

of

A. MECHANICAL

Item

I
2
3
4
5

6
7
8
9

10

ll
t2
13
l4
l5

l6
17
l8
t9

20

FiS.

68
68
68
68
68

68
68

68
68
68

68
68
68
68

68

68
68
68
68
68

Ports

PARTS

number

Code

4822 159 00315

4822 159

4822
4822 159 00451

4822 276 10095
4822 r59 00421
4822 rs9 00318
4822 159 00364
4822 I s8 00421

4822
4822 rs9 00452
4822 159 00366
4822 r59 00321
4822 157 00359

4822
4822 216 00496
4822
4822
4822 rs9 00446

00314

v3

578 72

00449

159

158 00416

159 00363

159 00358

159 00359

Description

Knob l4O,
Cover, white
Mains
Lens, white
Lens,

Push
Sliding
Knob
Cover, white

BNC-Connector

Terminal
Text
Terminal

Knob

Push

Knob
Socket

Cover, red
Knob
Push

shaft 6A

switch

green

button

switch

switch,

23O,

shaft 6A

plate

l4A,

shaft 40

button switch

23O,

shaft 40

l4O,

shaft 40

button

2pos.

Qty.

4

4

I
I
I

I
2
5

2

I

4

I
2
2

I

3

I
6

4

2

**

**
**
**
**
{.*

*

*rl.

*

!f*

**
**

:Ë
**

**

**

2l
22

23

24

25

26
27
28
29

30

31
32
33
34
35

36
37
38
39

N

4l
42
43

u

69
69
69
69
69

69

69
70
7l
7l

7l
7l
7l
56
56

72
72

Fl0lAA/001
M7

757

ll
4822 044
4822
4822 044

4822 136 000s8

4822 159 00459
4822

4822

4822

4822
4822

4822

4822 rgs

4822

4822

4822
4822 r59 00457

00501

136 00058

00507

978lM2x

159 00445

M7 289

97619 x

072

00n/92

w4 t25

t57 W732

A3

311 15

044 00505
044

00506

x

97617
159 00458

W266

159 00454
159 00455
159 00456

12

l0

49

74

19

Fuse holder
Voltage adapter
Centre

bush
Contact socket
Contact block

Contact

socket

Mains connecter

Filtermat

Knob

Anode-cap

Valve holder
Contact
Contact
Lamp
Lamp holder

Ventilator,
Ventilator,
Valve holder
Valve holder
Valve

C-alibration
Trigger
Sweep time
Deflection

block
block

holder

holder

switch

switch

Noval

left
right

Min.

for

switch

switch

CRT

38

18

2

I
2
5

I

*
**
**
**
**

*
{.
*
*
*

*

2
2
4

2

I

I
2
8

I

I
I

I

I

rt*

*
*

rt

*
*
*
*
*

**

rl+

**,

*r*

7l

Purpose

of the columm

Components

They

should

concerned or at

include:

They
a. all

mechanical

b.

wear.

to

Components

These

components

their

but
apparatus.
the following factors:

B.

ELECTRICAL

No standard
The standard
derived.

key

The

not marked

present

be

the

electrical

components;

parts

marked with one star

presence

Stocking

parts

parts

to the code is

G

G

D

G

G

flF
flF-

G

ï]-

qF

qF
qF

qF

1È

tr

êrr

"S"

the

at

Service

customer who

which

generally

is

essential

up of a

PARTS

are included in

in the circuit

vulnerable,

are

have a long

few

given

Carbon

Carbon

Carbon
Wire-wound

Carbon

Wire-wound

Wire-wound

Carbon
Ceramic
Ceramic
Styroflex

Polyester

Paper

Wire-wound

Ceramic

trimmer

Air

trimmer

Air
boards)

Department in

is

using the

or

unlimited

or

for the correct

these components

of

this

diagrams are

below:

resistor

resistor

resistor

resistor

resistor

resistor

resistor

capacitor
pin-up

capacitor

capacitor

capacitor

trimmer

trimmer

(for printed-wiring

the

apparatus.

which

are subject

service-life,

working

depends on

parts

list with

capacitor

(<228)

>

(

30E)

country

the

of

the

indicated with symbols from

the

number

a.

the necessity

b.

not,

c. the

time

import

the

of

Components

components

These

not

essential

are

they

erally

exception of

w:

.8

W

v/

w

v'v

0.25

,

0.5

0.+1

0.5

5.5 W

of equipment

of

of delivery

restrictions

transport.

marked

are not

choice resistors.

<270

>270

l0w

0.125 w
500-700

v

500 v

v

500
400 v
1000 v

l
)

having

the apparatus

of

in the

with

have

a long

for the

correct working

stocked

which

::#3

()

O

present

in the country

working continuously

components

the

country concerned

two stars

unlimited

or

locally.

the service code

service-life

the apparatus. Gen-

of

:5%
:10

%
:5%
:10

%
:l%
:2%

0,5%

:5%
:10

%

:10

%

:5%

s%

5%

r%

r0%

r0%

concerned,

with respect

the

and

and they

number

e021K...

e00/P...

eOt

I

e01/w...
e02lP ...

e38/A
e38/B...

e02l 4...

...

e04l
e041P...
e0s/D...

...

9061

906lY ...

...

e07

I

e08/...

908/P...

or

to the

duration

can be

...

..

The correct values of the

choice-resistors and

vaporized carbon resistors,

number

Code

number

Code

unless otherwise

capacitors are determined

specified.

901

lr20K

e04l4E7

during factory adjustment.

All resistors are

72

RESISTORS

No.

RI
R2
R3
R4
R5

R6
R7
R8
R9
Rl0

R3l
R39
R55
R57
R59

R75
R76
R79
R82
R87

R89
R9l
R98
R99
Rl00

R302
R3 t4
R3l8
R319
R320

R324
R327
R328
R436
R440

R473
R484
R485
R535
R540

R54l
R542
R543
R544
R545

R546
R547
R548
R554
R584

number Watts

Code

4822071
4822
4822
4822
4822071

916/GEl M
9t6lGF,z}'í
916lGE500K
M7
4822071

4822

er6lGEZK

0...e021A33E

0...9021A33E
4822 140

4822
4822
4822 140
916lGF.l0K

4822 140

00845

071

01035

071

01035

071 01039

01039

t7

637

01043

071 00879

00379

140 00381
140 00382

00383

00379

100 ko
100 ko

r00 ko
200 ko
200 ko

I

2.2 MA

470 ko

30C,

lin

I MCt

log 20

2.2

2.2 kO

0...33

0...33
I

250

3300 o

1200

l0

rko

MC)

kO
kO

c)
O

kcl

O

o

ko

e02l A...

4822 140
4822

e3rlAlK

4822 r40

9021P2M2...9021P10M
916lGEl00K
916lGE5OOK
4822
916lGFlooK

9021PrM...e02lP5M6

er4l2.s

El99AA/B13Bl0K
El99AA

90r

916|GE20K

916lGE20K
4822
4822

4822

4822
4822
4822071
4822 140

4822 140 00385
B8
B8
E199AA/B13B50oE

El99AA/Bl3BsK

00379

140 00384

00384

071 00716

lczrA2sE

lr80K

071 00966
07r 00967

071 00776
071

00779

071 00968

00969
00385

305 27F,l3l,M
305 zTF,lrM.s

lko
560
820
560 O

2.2..10
100
470 ko

lko

r00

1...5.6 MCI

2.2

l0
25O

r80 ko

22

22 kO
750 ko
300 ko

150 ko
500 ko
200 kc)

100 ko

15 MCI

7.5 Mít
3MO

1.5 MO

500 o

5

c)
O

MCr

ko

ko

kO
ko

kO

kcl

3

0.125

0.125
4

4
4

4

0.r25
4
4

t6

4

0.5

3

0.5
3

I
I

o.25

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5
I
I

%

t0

t0

I
I

I
I
I
I

o.7
o.7

0.7

o.7

DescripÍion

Potentiometer

potentiometer

Dual

potentiometer

Dual

potentiometer

Dual

potentiometer

Dual

Potentiometer
Potentiometer
Potentiometer

Potentiometer

potentiometer

Dual

wound

choice

wound

potentiometer

wound

film

(2

film

film

(2

in

wound

potentiometer

potentiometer

potentiometer

potentiometer

potentiometer
potentiometer

par.)

potentiometer
potentiometer

Wire wound
Potentiometer
Choice resistor

Choice resistor

Carbon

Wire

Carbon
Carbon
Potentiometer
Carbon

Choice resistor
Carbon
Carbon
Wire wound
Carbon

Carbon
Potentiometer lin
Potentiometer lin
Wire
Potentiometer

Carbon choice
Wire wound
Tandem
Wire wound
Wire

Metal film
Potentiometer
Potentiometer
Metal film
Metal film

Metal
Metal
Metal film
Metal
Carbon

Carbon
Carbon
Carbon

ril/ire
Wire wound

in

lin

lin

lin
lin
lin

lin
lin
lin

lin

lin

lin

lin

lin
lin

par.)

73

No.

R589
R60l
R702
R703
R7r4

R73l
R738

R742
R753
R1005

RI006
R1008
Rr009
Rt0t4

R1016

Rl0l7

Rt0l8

R1019

R1023

R1024

R1025

Rr027

R 1028

Rr033

R 1034

R1036

R1037

R104r

Rr042

R1044

R1045

R1046

Rl05l

R1052

R 1053

R1054

R1056
R1057
R1059
R1062

R1067
Rr068
Rl07l
R1072
R1076

R1077
R1083
R1084
R1096

R1097
Rl098
Rl111

number

Code

El99AA/Bl3Br 0K
916lGEr00K
e0rl lK8
eOr

ltl'ís l leor lr20K

00892

071

4822

El99AA/BI

3B500E

Er99AA/BI3B5K

00968

07r

4822

071 00968

4822

eozK8zB...e02lK2K7

071 0l0l l

4822

071 00971

4822

eOl/wsK6

071 00971

4822

07r OO972

4822

r

93

/A330E

e3l

/A330E

93 r

/A330E

9021K828...9021KzKt

071 01009

4822
e021K...

482207r

00973

eor/wsK6

07 r 00973

4822

071 00974

4822

A2708

93r

I

4270E.

93t

I

e02lK82E...9O21K2K7

071 01009

4822

071 00971

4822
e021K...

90r/w5K6

07r 0097r

4822

07r 00972

4822
931lAr 80E

93t

lAl80E

l80E

931/A

Al80E

93r

I

e021K...
e021K...

e021K828...9021K2K7

07r 01009

4822
4822071

00973

90r/w5K6

4822071
4822

00973

071 00975

9021K828 ...9021K2K7

071 01009

4822

071 00971

4822

88

305 83E/40K

00878

071

4822

e02lK828...e021K2K7

Value

l0

ko

r00

ko

900 o

ko

ilr

l0 ko

o

500

5ko
100 kcl
100 kíl

82...2700 O

4.7
KO

33

kcr

5.6

33

KO

7

KO

6.7

330
330
330

82...2700

2.7

ko

68

KO

5.6
KO

68

KO

4.7

220
220

82...27W

2.7

KO

33

KO

5.6
KO

33

7

KO

6.5

180

180
180
180

82...2700

2.7
KO

68

5.6

KO

68

KO

89.6

KO

82...2700

2.7
KO

33
20

KO
KO

4.7

82...2700

Watts

I

0.25

0.25
3

0.25

O

O
O
Ct

o
o

O
O
O
O

O

Cl

l)

O

O

O

O

l)

o

2

0.5

0.5

0.5

0.5

t6
t6
t6

0.25
2

0.25

0.5

0.5

0.5

0.5

16
r6

0.2s

2

0.5

0.25

0.5

0.5

0.5

t6

l6
t6
l6

0.25

0.25

0.25
2

0.5

0.5

0.5

0.5

0.25

2

0.5

0.5
3

0.25

%

I
I
5

5
5
5
5

5
5
5

5
5
5
5
5

5

Description

potentiometer

wound

Wire
Potentiometer

(2

Carbon
Carbon
Wire

Wire
Wire

Metal
Metal

Choice resistor
Wire

Metal

Wire

Metal film
Metal

Wire
Wire
Wire
Choice resistor
Wire wound

Choice resistor

Metal

Wire

Metal film
Metal

Wire wound
Wire wound
Choice resistor
Wire wound

Metal film
Choice resistor

Wire wound

Metal film
Metal film

Wire wound

Wire
Wire
Wire
Choice
Choice

Choice
Wire wound

Metal

Wire wound

Metal film

Metal film
Choice resistor
Wire wound

Metal film

Metal film
Wire wound
Choice resistor

in

(in par.)

potentiometer

wound

potentiometer

wound

potentiometer

wound

(2

film

(2

film

wound resistor

film

wound

film

wound
wound
wound

film

wound

film

wound
wound
wound

resistor
resistor

resistor

film

lin

par.)

par.)

in

par.)

in

potentiometer

74

No.

Rltl3
Rl117
Rlll8
Rtt22
Rl123

Rl 127
Rl 133

136

Rl
Rl 139
Rl r4l

RI144
Rl146
Rl152
Rl154
Rl 159

Rl l6l
Rl164
Rl166
Rl172

174

Rr

Rl179
Rlr8l
Rl 184
Rl186
Rt 188

Rl194
Rl197
Rt20l
RL202
R1206

R1207
R1213
R1216
Rl217
R1218

Rr223
Rr224
Rl313

Rl326
R1410

R14l I
R14r 2
R1415
Rl417
Rl418

R1419

R1421

R.r422

R1423

Rr424
R.r426
Rr427
R1428

Code number Value

4822
4822

071 0l0l
071

l

00971

90r/wsK6

071 00971

4822

071 00976

4822

931/A68E
902/K828...9021K2K7

071 01008

4822

88

305 83E/10K

4822071
88

4822

48 768

4822
4822

00789

305 83E/r0K

071 00977

05/l8E
071 01007
071 00789

82...2700

901/w8208
4822071
4822

48

4822
4822071

00789

071

00978

768 0s/r8E

071

01007

00789

eOl/w820H_

071

4822
4822

07t

00789

00979

931/A68E
9021K828...9021K2K7

071 01008

4822
88

305 83E/l0K

071

4822

88

00789

305 83E/l0K

82...2700 O

90liw5K6
9021K828...9021K2K7

071
071

0l0l

0097r

I

4822
4822

82...2t00 o

90r/wsK6

07r

4822

4822

071

00971

00981
9r6iGElM
916lGE200K

071

4822
4822

4822
4822

88
4822

4822

00969

071

00892

071 00969
071 00783

305 83E/l0K

071

00982

071 00983

90r/wlK6

071 00984

4822
90rlw220E

071

4822

4822
4822
4822

00985
071 00986
071

00986

071

00987

4.7 O
kO

33

5.6 kO

33 kO

87.6 kíl

68O

1.1 o

kcr

l0

2.2 kO
ko

l0

77.7 kO
18 o

0.27 O
kO

2.2

820

kO

2.2

72.r

ko

18 o

0.27

2.2 kcl

820

2.2

kO
ko

69.r
68O

l.l

l0 ko

2.2 kO

l0

ko

5.6 kO

4.7 O
kO

33

kO

5.6

33 kc)

49.3 kO
lMo

200

ko

50 ko

l0 ko

50

ko
50o
10 ko

5680 O
2780 O

801 O
378 O
220

O

72.3 O

35.9 O

35.9 c)

0.22

c)

Watts

%

2

0.5

0.5

0.5

0.5

l6

O

0.25
2

0.25

0.25

0.25

0.5

l6

I
I

I
I
5

2

0.2s

O

0.25

0.25

0.5

l6

rt

2

0.25

O

0.25

0.25

0.5

t6

0.25

o

2
o.25

0.25

0.2s

I

2

I

5

2

I

2
I
5

5

I

2

I

0.5

0.2s
2

0.5

0.5

0.5

0.5

0.5
3

0.2s

0.25

0.5

o.2s

0.25

0.2s

0.2s

0.25
o.25

0.25

0.25
I

0.7

0.7
I
I
I

Descript

ion

wound

Wire

film

Metal

Wire wound

Metal film
Metal film

wound

Wire

resistor

Choice

wound

Wire
Metal film
Metal film

Metal film

film

Metal

wound

Wire

wound

Wire

Metal film

Wire wound

film

Metal
Metal film

wound

Wire
Wire wound

Metal film
Wire wound
Metal film
Metal film

wound

Wire
Choice resistor

wound

Wire
Metal

film
Metal film
Metal film

wound

Wire
Choice resistor

wound

Wire

Metal film

Wire wound

Metal film

Metal film
Potentiometer
Potentiometer
Metal film

Wire wound
Metal film
Metal film
Metal film
Metal film

Metal

Wire wound

Metal
Metal film

Metal film
Metal film
Metal

Transistor

(2

(2

film

film

film

resistor

(2

par.)

in

(2

par.)

in

(2

par.)

in

(2

par.)

in

(2

par.)

in

par.)

(2

in

lin
lin

par.)

in

potentiometer

par.)

in

(2

par.)

in

CAPACITORS

75

No. Code

c27
c3l
c38
c39
c40

c55
c30l
c303

c4lr

c415
c5l I

cs12
c513

c5l4
cs39
c543
cl001
c1003

c1008
c1006
c10t I
cr0r 3
cl0r

6

c10r 8
ct02l
c1022
cro23
cr026

cr027
cI031
c1033
c1036

cl038
cl04r

cr044

cI046

cr049

cl05l
cl0s3

cl0s6
cl057

c1302

c1303
cI307

cI308
cI309
cr3rI

cr3r2

13

cl3

cr3r4

cl3t6

cr3r7
cr404
c1406

4822
4822

909/W40

e0e/w4o

4822
c

4822
4822 140

eOelw20

4822

4822 l4r
4822
4822 t4l

eOs

4822

4822

4822
9rr

9l

4822 218
4822

9rr

4822

9rl

4822

e09lzro0
9r r/L50
4822

4822
4822
9rr
4822

4822

4822

9oe/c5o
4822
eoe/c50
4822

4822
4822
9rr
9O9lcrzl-

9oe/M8

4822 140
4822
4822
4822
4822

4822
3822
4822
4822 140
4822
4822

number

069 0l

103

069 0l103

01064

069

00s AAl2sE

00375

140

00376

069 01093

002+2

00242

r4r

00242

+

lD430E

069 01064

01064

069

00224

218

lLso

l

/L50

00224
00224

218

lLs0

00224

218

lLso

00224

2r8

00622

069

01071

069

00224

2r8

lLso

069 00698

00703

069
069 00905

00905

069

00698

069
069 00703

00224

2r8

lLso

00377

00377

140

00378

140

00378

140

00378

140

00378

140

00377

r40

00377

r40

00377

069 01064

01064

069

eo5/D560E

Value

68
68
40
40

100

25

8.2
20 nF
20

l0 nF

lpF

100

l0 nF

990
100
100

200

50

50
200
200

50

200

50
200
100

50

lpF

47
200

50

4,000

50

10,000

50

10,000

50

4,000

50

2O0

50

12.5
8pF

5nF

5nF

500
500
500

500

5nF
5nF
5nF

100
100

nF
nF
pF
pF
nF

pF

nF

pF

nF

pF
nF
nF
pF
pF

pF

pF

pF

pF

pF

pF
pF
pF
pF

nF

pF

pF
pF
pF

pF
pF
pF
pF
pF

pF
pF
pF

pF

pF
pF
pF

pF

nF
nF

Volts

500
500

l6
t6

2s0

2000
2000

r6

250

250
250
250

32s

200

200

325

325
200
325

200
325

64
200
250

250
325

200

40

40

t6

25

l6
25
40

40

325

200

25

350

3,000

3,000
10,000
10,000
10,000

10,000

3,000
3,000
3,000

250

2s0

Description

capacitor

Plate

capacitor

Plate
Electrolytic
Electrolytic
Polyester

Trimmer
HV Capacitor

Capacitor

HV
Electrolytic

capacitor

Plate
Box

capacitor
capacitor

Box
Box

capacitor

Styroflex
Polyester
Polyester
Electrolytic
Electrolytic

Electrclytic
Electrolytic
Electrolytic
Electrolytic

Electrolytic

Electrolytic

Electrolytic
Electrolytic
Electrolytic
Electrolytic

Polyester
Electrolytic
Electrolytic
Electrolytic

Electrolytic

Electrolytic
Electrolytic
Electrolytic
Electrolytic
Electrolytic

Electrolytic
Electrolytic
Electrolytic

Electrolytic
Electrolytic

HV Capacitor

HV Capacitor
HV Capacitor
HV Capacitor
HV

HV Capacitor

HV Capacitor
HV
HV
Polyester
Polyester

(in

(in

Capacitor

Capacitor
Capacitor

parallel)

parallel)

76

coILs

No.

L26
L27
L28
L29
L30
L3l
L32
L33
L34
L35
L36

number

Code

r59 00492

4822
4822 I 59

rs9 W492

4822

rs9 00493

4822

159

4822

159

4822

t56 20284

4822

rs6 20283

4822

rs9 W494

4822

156 20284

4822

156

4822

00493

W462
40494

MISCELLANEOUS
No.

T40l K3

T1001 4822 159
Tl30l

number

Code

004 07

4822 I 17

00461

00409

vl-l e74lv4ooo
vLz 9741V4000

RElOOl 4822
REl002 4822 l s9

159

004/.7

00465

RE1003 4822 159 00466

Descríptíon Code

Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil

20283

Descriptiott No. Code

Transformer

Coil

(furnished

by Com
Dept. Elcoma)
Mains transformer
HT transformer

Fuse
Fuse

Relay

Thermal delay switch

No.

L37
L38
L40...rA9
L40l
L402

L45l
L452
L453...L4s9

L50l
L502...
L505

Unit

Unit

unit
Unit

I I

Unit

12

Unit

13

Unit

16

Unit

17

unit

l8

unit

Thermostat

number

00462

t59

4822
4822 I 58
4822
4822
4822
4822
4822 t59
4822
4822 I 59
4822

5 4822 159

00462

061

00079

128 W272

061 00079

r59 00464

00464

061 00079

00463

061 00079

number Description

00467
6 4822 159 00468
7
8

4822 159
4822 159
4822 159
4822 159
4822 159

00469

00471

00472

00473

00474

4822 159 00475
4822 159 00476

t59 00477

4822

Calibration

TV

sync. unit

pre-amplifier

X-defl.
Rectifier
Power
Power
Final
CRT
Power
Power

unit
supply
supply

amplifier

unit

supply
supply

Description

Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil
Coil

unit

I

2

resistor
resistor

unit
unit

VALVES, SEMI-COhIDUCTORS
The following

parts

furnished

are

DIODES

No.

GR4OI
GR4O2

GR4O3
GR4O4
GR4O5

GR50l
GR502
GR503
GR504
GR505

GR5O6

GRTOI
GRIOOI
GRIOO2
GR1003

GRIOO4

GRt005
GRl006
GRIOOT
GR1OO8

Code

number Description

AAZIT

4822

(-

00613

128

lN3l49)
OA2O2
OA85
OA85

OA85

0A202
o.A202
o.A202

0A70

AAZI5
BZY69
BYlOOS
BYIOOS
BYt00S

BYIOOS

o.A2204

BYlOOS
BYIOOS
BYIOOS

Germanium

Tunnel
Central
Silicon diode
Germanium
Germanium

Germanium
Silicon diode
Silicon diode
Silicon
Germanium

Germanium

Zener

Silicon

Silicon
Silicon

Silicon diode
Zener
Silicon
Silicon
Silicon

ETC.

Com. Dept. Elcoma

by

diode

diode

Service)

diode

diode

diode

diode

diode

diode

diode

diode
diode
diode

diode

diode
diode
diode

(furnished

by

No.

GRIOO9
GRl010

I BYIOOS

GRIOI
GRIOI2
GRlOl3

GRIO14
cRl015
GR1OI6
GRlOl7

GRl018

GR10t9
GRr020
GR1O2I
GRIO22
GR1O23

GR1O24

number

Code

BYIOOS

o.4Z,204

BYIOOS
BY1OOS

BYIOOS

0.42204

BYZIO

BYZI0

BYZI0

BYZIO

0.42204
BYIOOS
BY1OOS
BYIOOS

BYIOOS
GR1025 o.Á^Z.204
GR1026 o.A2204

GR1O27
GRIO28

BYIOOS

BYlOOS

Description

diode

Silicon

Zener diode
Silicon diode
Silicon diode

diode

Silicon

diode

Silicon

Zener diode
Silicon diode

diode

Silicon

diode

Silicon

diode

Silicon

diode

Zener

diode

Silicon

diode

Silicon

diode

Silicon

diode

Silicon

Zener diode
Zener diode

diode

Silicon

diode

Silicon

77

No.

GRIO29
GRIO3O
GRIO3I
GRIO32
GRI036

GRIO37
GRIO38

GR1O39
GRIO4I
GR1O42

GRIO43
GRIO44
GR1045
GRI046
GRlO47

GRIO48
GRIO49

GRIO5I
GRIO52
GRIO53

Code

BYIOOS
BYIOOS
BYIOOS
BZY69

BYIOOS

BYIOOS
BYIOOS
BYIOOS

BYY2I

BYY2I

BYY2O
BYY2O
BZZ22
BYY2I
BYY2I

BYY2O
BYY2O
BYYZI
BYY2I
BYY2O

TRANSISTORS

No. Code

number

number

Description

diode

Silicon

diode

Silicon

diode

Silicon

diode

Silicon

Silicon diode

diode

Silicon

diode

Silicon

diode

Silicon

diode

Silicon

diode

Silicon

diode

Silicon

diode

Silicon

Zener

diode

diode

Silicon

diode

Silicon

diode

Silicon

diode

Silicon

diode

Silicon
Silicon diode
Silicon diode

Description

No.

GRIO54
GRIO56

GRlO57
GRIO58
GRIO59

Code

BYY2O
BYY2I
BYY2I
BYY2O
BYY2O

number

GRl06r oAz204
GRIO62
GR1063
GR1064
GRI065

GRI066

BZZ22

BYIOOS

BYIOOS

BYlOOS

BYIOOS
GRr067 o.A2204
GRI3OI BYXI I
GR13O2

GRI3O3
GRI3O4

GRI3O5

No.

BYXI I

BXYI I

BYXI I

BYXI I

number Description

Code

Description

diode

Silicon

diode

Silicon

diode

Silicon

diode

Silicon

diode

Silicon

Zener diode

diode

Zener

diode

Silicon

diode

Silicon

diode

Silicon

diode

Silicon

Zener diode

diode

Silicon

diode

Silicon

diode

Silicon

diode

Silicon
Silicon diode

TS3OI
TS4OI
TS4O3

TS4O4

AFI 18

ASZ2O
ASZ2O

BSY39

TS100t ASZI5

TS1OO2 ASZI5
TSl003 ACl28
TS1OO4
TS1OO5

TSIOO6
TSIOOT
TSl OO8
TS1OO9
TSr0l0

TS1OI
TS1OI2
TSIOI3
TSIOI4
TS1OI5

TSl016
TSIO17

TSIOIS
TS1OI9
TS1O2O

TSIO2I
TS1O22
TSIO23
TSIO24
T51026

TSIO27

TS1028
TS1O29
TSIO3O
TS1O3I

ASYSO
BCY3I

BCY3I
ASZI5

ASZI5
ASZI5

Acl28

I ASY8O

BCY3I
BCY3I
ASZI5

ASZI5
ACl28

ASY8O
BCY3I
BCY3I
ASZI5

ASZI5
ASZI5
ASZI5
BCY3I
BCY32

BCY32
ACl28
ASY8O
BCY3I

BCY3I

Germanium

transistor

Germanium transistor

Germanium transistor
Silicon transistor

Germanium
Germanium
Germanium
Germanium

power

transisior

power

transistor
transistor
switching

transistor

Silicon transistor
Silicon transistor

Germanium

Germanium

Germanium

power
power
power

transistor

transistor

transisior

Germanium transistor

Germanium
Silicon

switching transistor

transistor
Silicon transistor
Germanium
Germanium

power
power

transistor
transistor

Germanium transistor
Germanium switching transistor

transistor

Silicon
Silicon transistor

power

Germanium
Germanium

Germanium

Germanium

transistor

Silicon

transistor

Silicon

transistor

Silicon
Germanium

Germanium switching

transistor

power

transistor

power

transistor

power

transistor

transistor

transistor

Silicon transistor

transistor

Silicon

TSIO32 ASZI5
TSIO33 ASZI5
TSl034 ASZI5
TS1O35 ASZI5
T51036 ACl28

TSIO37 ASY8O
TSIO38
TSIO39

TSIO4I
TSIO42

TS1043
TSIO44
TSIO45

ASY8O

BCY3I
ASZI5
ASZI5

ACl28
ASY8O

BCY3I
T51046 BCY3I
TSIO47

TSIO48
TSl049
TS1O5O
TSIO5I
TSIO52

TS1O53
TSIO54

O55

I

TS

1056 ACr 28

TS
TSIO57

TS1058

TSr059

ASZI6

ASYSO

ACl28

ASY8O

BCY3I

BCY3I

ASZI6
ASYSO
ASYSO

BCY3I

BCY31

ASZI6
TSIO6O ASY8O
TSIO6I

ASY8O

TSl062 ACl28
T51063

T51064
T51065
TS1066
TS1067

BCY3I
BCY3I

ASZI6

ASYSO

ACt28

ium

German
Germanium
Germanium
Germanium
Germanium

Germanium
Germanium

transistor

Silicon
Germanium
Germanium

Germanium

Germanium

transistor

Silicon

transistor

Silicon
Germanium

Germanium
Germanium

Germanium

transistor

Silicon

transistor

Silicon
Germanium

Germanium
Germanium
Germanium

transistor

Silicon

transistor

Silicon

Germanium
Germanium
Germanium
Germanium

transistor

Silicon

transistor

Silicon
Germanium
Germanium
Germanium

power

transistor

power

transistor

power

transistor

power

transistor

transistor
switching

switching

power

transistor

power

transistor

transistor
switching

power

transistor

switching
transistor
switching

power

transistor
switching
switching
transistor

power

transistor

switching
switching
transistor

power

transistor

switching

transistor

nsistor

tra
transistor

transistor

transistor

transistor

transistor
transistor

transistor

transistor

transistor

78

No.

T51068

Code number

ASY8O
T51069 BCY3I
TSIOTO BCY3l
TS1071
TS1O72

ASZI5

ASZ15

VALVES

No.

BI
B2

B3

B4

B5

B6

B30l
B401
8402
8451

8452
8453
8454
B50l
B502

B503
8504
B506
8507

B508

Code number

EI88CC

E8IOF
E8lOF
Er88CC
E55L

E55L
Dr3-r6/lcH
EFI84
EFl84
E188CC

Er82CC
ECC83
E188CC
EFl84
E88CC

E88CC
5726
E81L
E88CC
E88CC

Description

Germanium

switching transistor

Silicon transistor
Silicon transistor
Germanium
Germanium

Description

power

power

Double triode
Penthode
Penthode
Double

triode

Penthode
Penthode

Cathode-ray tube
Penthode
Penthode
Double triode

Double

Double
Double

triode
triode

triode
Penthode
Double

triode
Double

triode
Double

triode
Penthode
Double

triode
Double triode

transistor

transistor

No. Code number Description

TS1073 4C128
TSIO74 ASYSO
TSIO75 BCY3I
T51076 BCY3I

No.

B509
8511
B5t2
B5l3
8514

8701
8702
8703
R_-704
B705

8706
B1001
Bl30l
81302
81303

B1304
81305
Bl40l
8t402

Code number Dhecription

E88CC
ESOCF

46s4

ESOCF

zAro04

E88CC
E88CC
E8IOF
ESIOF
E88CC

E88CC

zztoo0

EL86
ECC82

5642
s642

s642
ESOCF
571

8

Germanium transistor

Germanium switching

transistor

Silicon

Silicon

Double triode
Triode
Penthode
Triode
Noon

Double triode
Double triode
Double
Penthode
Double triode

Double triode

Stabiliser valve
Penthode

Double triode

Diode
Diode

Diode
Triode
Triode

transistor

transistor

penthode

penthode

stabiliser

triode

penthode

LAMPS

No.

LA1
LA2
LA3
LA4
LA5

Code number

6828
6828
6828
6828
955/D10

x 200

Description

6 V-0.6 W
6 V-0.6
6 V-0.6

V-0.6

6

10

V-200

W
W
W

mA

by

(furnished

Central

Service)

No.

LA6
LA7
LA8
LA9
LAlO

Code

8108D

GL8
GL8
GL8

number

Description

Neon tube
Neon

tube

Neon tube

7e

Fig.

73. Printed

9SK1

10sK

131

circuit

3

|

1SKt2tra

board

(calibration

U5

voltage)

R1116

PE

.i:

t4

2613

+

50V

-1

sro

)

200 V

+

R11,11

1411

R
R 1411

T1o01

80

Fig.

74. Printed

6.3V

+

-6.3V

27BUX

s1s

R10

t<zYR

s

9

R101

circuit board

+

{

12SK1EF

+

rËx1uA

+

ItrA

F

125

M261r,

PE

(TV

U6

sync.)

81

Fig.

75 .

Printed

circuit

board U7 ( horizontal

'fF.-

N'

(.rl

x

._l

preamplifier

H

PE M

)

+ 70v

srt

)

-1
R7U,

R

714

R71t,

2615

Tlool

50V

82

"{

ro
.r{
rt{

r8{

ss{

s6{

s

1o{

s11{

s7{

s12{

10

21

-c
I

{

+

06f

{ :.ii:*.t:

*..1.,..,.....;;;ap,

i}t:+ }iyJ..i:f

.iitttiiiÈ

riili.i;:í+l

PEM

261

6

1051

c

­1187

R

-c1056
I

c1046

­R1167

-c

1031

+c1031

1016

c

­+c101

1011

-c

Rl'l1,7

1011

c

­1011

c

+

c100

­+c100

-c103

R1126

1001

c

­+c1001

86V-3V,

Fig.

76. Printed circuit

board U8 ( rectifiers

)

83

B

TS1072

TS1072

E

1002

RE

RE 1002

E T51065

BTS1O65

I

(C1011)

130V

teBuY

*

ETS1O53
cTs1053

TS

B

1053

25BUY

(c1023)

1s0v

I

BTS

1059
cTS1059
ETS 1059
11BUX

I

EïS10t7
B TS 1017
RE 1002

I

TS 1012

E
BTS

IO42

1002

RE

)

Fig.

77. Printed

circuit board

UII

Qtower

supply

PE

M 2617

I)

84

Ij

',*J1nr"

R1098

T1001
T1001-S20

R1082
eTS1035

bTS

eTS 1023

-

-

bTS1023

c1016

RE1002

eTS1015

--

bTS 1015

cTS

RE

eTS 1009

bTS1009

c

1006

RE1002

e TS1002
bT5100

TS1002

c

RE1002

-S

1035

101/.

100

20

2

2

Fig.

78.

Printed

circuít

board

uI2

(pow,er

supply

PEM2618

II)

8s

Fig.79. Printed

circuit board

UI4

eL31

(power

PE|42619

amplifier)

86

DELAY

(sauY)

LINE

PEt4

262

v

-70

330V

+

314

R

R

s06

+

0

Fig.

80.

Printed

circuit

board

uI6

(cRT

circuit)

87

cTS1053

TS

e

1036

c TSl059

bTS 1008
bTS1007

TS1010

e

Ts1034

b

eTS 1471

TS1059

e
e TS1053

1071

TS

b

eTS1068

TS

1021

b

TS

1071

c
c ïs1065

c

TS1007

Fig.8I.

Printed

circuit

eTS1065

bTs1033

1022

bTs

U17

board

(power

supply resistors)

PE

M

2621

88

bTS1033

TS

C

10L1

1021

TS

b

eTS1016

e TS 101,7

bTS10t1

TS10t

e

2

bTS1032

TS1003

e

TS 1 011,

b
bTS1020

bTS1001

C TS

101,7

c

TS

101t,

cTS1020

cTS1001

crr
r\
cr

E.

c\
(vt

o

(r

c\
o

Íx

ro

(v)

o

(r

Fig.82.

Printed

circuit

board

TSl

c

032

(power-supply

UI9

resistors)

PEM

2622

+17.5V

+107

v

C29

R41

c26 R47

+19.6V

+ll8

v

Rsl

lns0 lRst lR60

17

BUY

+17,5V

+107V

+168V

Ël

tK5

R44

c40

t00K

B2

F

E

8'r0

7

H

81,82,83,
84,El6,87.

\

\E/

l50nsrc

+200

+figv

89

o

ctl

À

l00K

R(t

c!r

tK5

+t30Y

v

V

+120

+ll9

5V

+123

V

+226V

+251

ir

V

B

301

eo4/

+

eo4/P

+

'#

eo8/

'+

soo/

'+

sos/D

-G-

-{}e02/A

-il]­&so2/P

soz/K

e38/A

+l19.5

83

OK

I

c40 R96

+123

V

PEM

26N A

Fig. 83.

Circuit diagram

the vertical

of

amplifier

111266101

90

R 506

Rl3l

c30f
8K2

+330V

s

ee€

tEiFlEF

3

e33

fl

.-J

/

+1

I

I

RsIC

DELAY

f20n

iac.

9BuY

LINE

TS

AF

3OI

IIg

20K

98

k

Lrr-o

g0

Yz-4

-1640V

L

302

-

5r3V

L

303

;;:;

lJt

!3gg

n

r

È

(F

x,

Fig.

84. Círcuit diagram of the CRT circuit

111266,10t

\e/

24V

+

Bsl

D13-16

GHll

c)
\t

È

G

(\l

x

902tK...

/W..

901

|P...

900

.

M 2730

PE

17

BUY

+l

7.5V

+18.7

+17,5V

v

+107

+n8v

+l9.6V

C29

R4t

V

Bl'
El88

,1,

ri

I

+107V

+168V

Ël

tK5

R44

c40

7

H

t00K

a
to

a

B2

E8lOF

c33l;l

I

tl Fl E

lril l^Il lXl l\a

R51

lR56 lR51 lR60

c34

lc3s lc36 lc37

lo

=r Er

390

1330 lrxl |

=r

200

81,82,E|3,

BI

84,86.87.

\+

\-;z

+ll8V

cL7

+120

RC6

V

+t30Y

+251

89

o

ct3

À

l00K

c1.

V

tK5

(t

l50nsr<

eo.,/

+

eo4/P

+

'#

so8/

'+

soo/

'+

sos/D

-G-

-G-

-ilF

&902/P

soz/K
eoz/A

s3B/A

+l19.5V

+123V

B3o1

iz

83

OKI

+123

V

PEM

26N

^

Fig. 83. Circuit

diagram

of the

vertícal

amplifier

111266101

32

BuY

+t

3ov

6

t52

tK5

I

r8451
tE

lg

s

R452

18

8CC

+160v

rr

452'

B

r,.

lsrcc

E

Ig&l

3

6

9453"

Ecc

B65J'

ECC83

83

.Bó52,

' '

lt2g 6

E

+l60v

'

Y

-,

8451

E I 88CC

s l3

s

l3

tK5

+10v

f trí5

Á76

a

r rCó57

Bó5ó"

9r

só

lLls6

gó54

r08

E

tK5

L451

0.331tH

-

al

IL

904/P

T

-E-

-t3­flF

Lt62

0.33p

H

75K

3F

Rlt97

I

+

?1

BuX

&

B 451 + 8151

902/K
902/A

938/A
s02tP

3ó52

gl/

4L 4-5

8{5ól BCSg

5re

458

)1459

Fig. 85.

Circuit diagram

PEM

the

of

2629

trigger

amplffier

sKlrF sKrro

sxr[l

st< tEa

sxtEr

sxrD

\-tt,

SK3A

93

501

28

GRlO3

0A202

7rg

/.04

TS
8Sv39

R

137

T

-

BS11

l5ó

R414

{w]-,

ctl'

{Fl

tKs

f_l

ct'tt

|

Rs

8/,01

R434

2

F

'81

33

'

,+lilovl^tl

'l

----r

ozsv

n_l

|

|

'

I

I

8102

j

Rl,2l,

c

9

4'l

A

II

,

5

K

EF'01
t-J

9

/K

902

-G

900

902

902

938/g

/P

/A

/P

c126

tK5

+

-a-

3

G

-flF

Fig.

86.

Circuit

diagram of the

GR101.105

_9.-TÉ_

\---tl

GR101.

-gJ_TÉ-

L----u

PEM

trigger

103

2630

unit

111266101

srrta

Cho+

C1+R1

Rho

m sec.

5

10

20

Fíg. 88. Circuit

TIME/cm

CAL

diagram

20p

5ec.

L10'

5

2

I

.5

of the time-cofficíent

switch

ol

-

T

,:J-

T

a

rl

+

T

ï

tl
ï

PEM

902/K

905tD...

904/...

.

.

908/.

902tK..

2729

.

6R

508

gAY

GR5O1

oÁ85

-6.3v

38

t:

!'-

|

R592

SKlO

9s

+200V

519

c

68

GR5 O9
gAY38

l- |

9506

Bsla

sxzrr

sxzlp

sxzEp

sxtlp

sxzla

sxzEa

sxrEr

->zsxrEr

sK8

SK?

TIME

SASE

A

o

\,,*0.-.

'5r

+'30V

+

B50l
8506+
8511

8503
8509

,

8513

TI

'rl

,l)

o+L

GRsO?

G R506

€-

GR5Ol
GR5O5

Ío,

+

X

ifr

\ot

\-/

8504
8512

GR

lrr::;

UNIT

I

3

1o'/

5O(

xz

s0

I

ol

gsttt

r

ËEïF

#'

soz/x.
ssz/e

eoa/P
so?/P

8EH

PEM

Bl

qF
ït-

ïF

2637

PEr.{

261?

generator

A

-D

10

.lg,

'ï'

'nii

J-

Fig.

87.

Circuit

diagram

-$

-Ë

-

-f|'

ste/a...
ste/a...

-E

of

the time-base

111266101

96

oooo

ooo??oo*

{

#

À,

o

oio

è

qt

\t
o
ct)

(Ít

(o
oO

Oè

\'

\.

+{È

v

o

íJl

ill

I

tll

ilifff

a
X

ill

tli

ï

lli-"

7

{

o

\,

D

{

o

{

><
c
z

{

@

ur'
x

\t

c)

m

.tt

x

oZ

:.{

NJ-

-6|

a

x

{

x

I

m

-n
r

=

m

í)

3
m

2

J
o

TD

z,

tt,

m

m

Jí

-o
m
3

\,

CD

l\)

ut

Fíg.

89.

circuít

diagram

of

the

pre-amplífier

r

+

ct)

o

-Ff

c)

{

o

m

b

|\I
lo
EI

{

ul
x

{

I
I

Lt

l;o

l-l
ld
Ilv

É

111266101