Philips PM 3206 User manual

PHILIPS

L.F.

OSCILLOSCOPE

3206

403

13.2-10

1i465j01

PHILIPS

PEM

747

L.F.

OSCILLOSCOPE

3206

403

13.2-10

1/465/01

Manual

Contents

GENERAL

PART

Technical

data

Accessories

DIRECTIONS

FOR

USE

Installation

Adjustment

local

mains

voltage

Earthing

Connection

the

mains

IV.

Operation

Knobs

and

sockets

and

their

functions

Switching

Input

circuit

the

vertical

amplifier

Making

the

voltage

shape

visible

Determining

thetime

Voltage

measurement

Horizontal

deflection

with

external

voltage

Horizontal

deflection

with

internal

sinusoidal

voltage

mains

frequency

Horizontal

magnification

Brightness

modulation

Use

the

calibrating

voltage

SERVICE

DATA

Description

the

working

principle

Introduction

Attenuator

Vertical

amplifier

Trigger

pulse

shaper

Time

-base

generator

Horizontal

amplifier

Cathode-ray

tube

circuit

Calibration

source

Power

supply

VI.

How

gain

access

the

components

Removing

the

cabinet

Removing

the

knobs

Removing

the

protective

cap

and

the

measuring

graticule

VII.

Replacing

component

parts

Replacing

the

thermal

fuse

Replacing

the

safety

fuses

Replacing

the

cathode-ray

tube

VIII.

Survey

adjusting

points

with

relevant

measuring

equipment

IX.

Adjustments

Pre

-adjustments

and

checks

Cathode-ray

tube

circuit

Vertical

amplifier

Calibration

voltage

Horizontal

amplifier

Time

-base

generator

Information

fault-finding

XI.

List

component

parts

List

mechanical

parts

List

electrical

parts

List

Figures

Rear

view

Controls

and

their

functions

View

side

controls

Block

diagram

the

oscilloscope

Removing

the

panels

Removing

the

knobs

Removing

the

protective

cap

and

the

measuring

lattice

Turning

the

cathode-ray

tube

Response

curves

Front

view

Right-hand

side

view

Rear

view

Left-hand

side

view

Printed

-wiring

board

Printed

-wiring

board

Printed

-wiring

board

Printed

-wiring

board

Printed

-wiring

board

Printed

-wiring

board

Printed

-wiring

board

Printed

-wiring

board

Printed

-wiring

board

Printed

-wiring

board

Amplifier

Time

-base

generator

and

trigger

pulse

shaper

Amplifier

and

cathode-ray

tube

circuit

Supply

part

Circuit

diagram

IMPORTANT

correspondence

concerning

this

apparatus,

please

quote

the

type

and

serial

numbers

given

the

type

plate

the

rear

the

apparatus.

GENERAL

PART

Technical

data

Properties

expressed

numerical

values

with

tolerances

stated

are

guaranteed

us.

Numerical

values

without

tolerances

are

given

for

information

purposes

omy

and

indicate

the

properties

average

apparatus.

CATHODE-RAY

TUBE

CIRCUIT

Cathode-ray

tube

useful

screen

surface

deflection

total

acceleration

voltage

brightness

control

Brightness

modulation

voltage

required

input

impedance

Mechanical

beam

suppression

Measuring

graticule

D10-12GL

(31/a"

symmetrical

2800

d.c.-coupled

for

frequencies

kc/s

600

kS2//25

The

suppressed

when

plug

inserted

input

socket.

this

socket

subsequently

earthed,

the

trace

reappears.

cm,

smallest

subdivision

mm.

The

graticule

illumination

can

regulated.

AMPLIFIER

(VERTICAL

DEFLECTIOl~

Deflection

factor

Frequency

response

calibrated

steps

0.002

0.01

0.02

0.05

0.1-0.2-0.5-1

-2-5-10-20-SOV/cm.

Tolerance

Continuous

adjustment

possible

between

the

steps

(not

calibrated).

0-100

kc/s

(max.

drop

dB)

for

sensitivity

from

-~-

mV/cm.

0-300

kc/s

(max.

drop

dB)

for

sensitivities

from

-50

V/cm.

The

band

width

almost

constant

all

positions

the

step

attenuator,

but

varies

slightly

when

the

continuous

attenuator

moved.

Overshoot

Input

input

resistance

input

capacity

max.

permissible

d.c.

voltage

with

a.c.

coupling

CALIBRATING

VOLTAGE

0.5

%for

pulses

with

rise

times

ns.

asymmetrical,

d.c.

a.c.

coupled

(switchable)

0.5

MS2

positions

0.01-0.02

and

0.05

V/cm:

other

positions:

300

(SOCKET

"CAL.")

square

-wave

voltage

mVp_p

%),

frequency

equal

the

mains

frequency

AMPLIFIER

(HORIZONTAL

DEFLECTION)

Deflection

factor

Frequency

-response

curve

Input

input

impedance

max.

input

voltage

Horizontal

-deflection

voltages,

selection

Magnification

with

horizontal

deflection

means

the

internal

time

-base

with

horizontal

deflection

means

external

voltage

V/cm

attenuation

with

continuous

control

and/or

xed

attenuator

input

sockets)

0-300

kc/s

(-3

dB)

asymmetrical

-input:

100

k52//30

pF,

-input:

1.1

MS2//6

-input:

100

-input:

700

Vp_

the

internal

time

-base

voltage

external

voltage

internal

voltage

with

mains

frequency

tolerance

with

respect

the

position

continuous

TIME

BASE

GENERATOR

Sweep

times

Modes

operation

Triggering

sensitivity,

internal

sensitivity,

external

Trigger

level

Output

voltage

socket

"45

ice/"

SUPPLY

calibrated

times

100

200-500µs/cm,

-2-5-

10-20-50-

100-

200

500

ms/cm,

s/cm,

tolerance

When

expanded

via

the

horizontal

amplifier

the

shortest

sweep

time

0.4

µs/cm.

The

sweep

times

can

varied

continuously

between

steps

(not

calibrated).

free

-running

triggered

selection,

internally

—

(L.F.

H.F.),

externally

—

(d.c.

H.F.)

internally

with

the

mains

frequency

~--

—

0.5

trace

height

for

frequencies

c/s

Vp_p

for

frequencies

from

0-300

kc/s

input

impedance:

M52//40

Max.

external

triggering

voltage

_p.

Trigger

level

can

continuously

adjusted

inter-

nally

across

/s")

picture

height;

exter-

nally

across

sawtooth

voltage

Vp_p,

d.c.

level

-~-

the

load

may

max.

0.1

MS2//35

pF,

Can

changed

over

for

mains

voltages

110-127

and

220

The

mains

frequency

may

40-100

c/s.

With

mains

frequencies

c/s,

the

mains

voltage

must

not

exceed

the

nominal

value.

The

power

consumption

135

INFLUENCE

MAINS

-VOLTAGE

VARIATIONS

10%

The

vertical

and

the

horizontal

-deflection

sens-

itivities

(sweep

times)

slightly

vary

mains

voltage

variations.

The

calibrating

voltage,

however,

remains

constant.

MECHANICAL

DATA

Dimensions

height

(1113/16")

width

21.5

/16)

depth

(1'

Weight

(30.86

lbs.)

Accessories

mains

cable

manual

(Directions

for

Use

~--

Service

Notes)

measuring

cable,

length

approx.

with

-mm

plugs

each

end.

DIRECTIONS

FOR

USE

Installation

ADJUSTMENT

LOCAL

MAINS

VOLTAGE

The

apparatus

can

adjusted,

means

voltage

adapter,

mains

voltages

110,

127

220

The

required

value

can

read

through

the

opening

the

rear

panel

(Fig.

1).

Adjustment

other

mains

voltages

effected

follows:

Remove

the

screws

"A"

and

detach

the

rear

panel.

Pull

out

the

adapter

slightly,

turn

until

the

correct

voltage

upper-

most

and

push

back.

Fit

the

rear

panel

again.

Fig.

Rear

view

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