Ericsson DIALOG Manual de lista de piezas

·.

DIALOG

Technical Description

6/DLG

TCI Library www.telephonecollectors.info

CONTENTS

Introduction

General

Desi

gn 6

3.1

Base

plate

3.2 Ring

3.3

Transmission

unit

3.4

Dial

unit

3.5

Instrument

case

3.6

Cords

3.7

Handset

3.8 Wall

terminal

box

Description

the

transmission

regulation

device

Transmission

properties

Dismantling

and

reassembly

during

maintenance

Maintenan

TCI Library www.telephonecollectors.info

INTRODUCTION

Ever

since

its

foundation

1876 L M

Ericsson

has

designed

and

produced

telephone

instruments

different

versions.

One

link

the

chain

standard

telephone

instruments

Dialog

which

incor-

porates

the

latest

research

techniques

, new

construction

materials

and

the

results

our

wide

experien

designers

and

manufac-

turers

Dial

attractive

appearance

and

has

llent

tech-

nical

qualities.

Furthermore,

the

technical

and

desi

aspects

have

been

matched

the

maintenance

requirements

This

description

refers

the

desk

version

Dialog

but

also

valid

for

the

wall

version

the

hanical

design

and

technical

tures

the

same

principles.

The

transmission

properti

described

are

iven

for

Dialog

with

automatic

transmission

regu-

lation.

TCI Library www.telephonecollectors.info

GENERAL

Dialog,

equipped

with

dial,

intended

for

connection

automatic

main

exchanges,

private

automatic

exchanges

and

private

automatic

branch

exchanges

(fig. 1).

Fig.

Dialog

designing

this

instrument,

the

aim

has

been

make

telephoning,

i.e.,

the

dialling

and

handling

the

instrument.

comfortable

possible.

and

enable

the

instrument

easily

carr

ied

(fig. 2).

With

this

aim

mind,

the

most

attractive

design

has

been

created

result

cooperation

between

engineers

and

industrial

designers.

This

means

among

other

things

that

the

instrument

constitutes

single.

compact

design,

attractive

from

all

angles

(fig.

3a-3c),

Fig.

Dialog

is easy

carry

1·

TCI Library www.telephonecollectors.info

Fig.

3 a

Dialog

front

view

The

design

the

instrument

case

and

handset

the

mechanical

build-up.

well

the

circuit.

are

completely

new.

cto

have

contributed

these

alterations.

First.

the

utilization

new

materials

and

high-quality

electrical

components

available,

and.

secondly.

the

application

experien

g . 3 b

Dial

sid

g. 3 c

TCI Library www.telephonecollectors.info

DESIGN

shown

fig. 4,

Dialog

has

seven

main

parts,

namely

Handset

with

cord

Instrument

cord

with

wall-terminal

box

Instrument

case

Base

plate

Dial

unit

Transmission

unit

Ringer

unit

Fig.

The

main

parts

Dialog

the

ringer

unit,

transmission

unit

and

dial

unit

are

keyed

into

the

base

plate

screws

are

required.

The

instrument

and

handset

cord

conductors

are

mechanically

connected

screw

terminals

the

transmission

unit.

The

instrument

case

fixed

the

internal

parts

means

of only

one

screw,

well

located

for

the

repairman

and

concealed

from

the

subscriber

(fig. 5).

Each

unit

has

its

own

function

and

can

replaced

identical

unit,

regardless

the

other

units.

The

assembly

method

enables

complete

telephone

instrument

built

of a few

units

each

which

comprises

several

components.

From

the

maintenance

point

view

this

most

valuable

method

design,

since

TCI Library www.telephonecollectors.info

Fig.

Onl

'Y one

screw

3.1

Base

ate

Fig.

The

scr

well

located

for

the

repairman

maintenance

the

field

can

carried

out

semi-skilled

staff,

with

minimum

tools

and

instruments.

Only a

screwdriver

required

replace

any

unit

(fig. 6). When

necessary,

repla

units

can

repaired

central

workshop

where

qualified

staff,

tools,

and

instruments

are

available.

The

DIALOG-case

and

handset

are

moulded

acrylate

butadiene

styrene

(ABS),

and

are

manufactured

eight

colours.

The

dyes

pigments

used

for

colouring

have

been

chosen

arefully

ensure

colour-fastness.

The

plastic

material

offers

ptimum

impact-

and

scratch

resistance

and

can

easil

withstand

the

effects

falling

from

one

meter

hardwood

floor

The

handset

cradle

designed

that

line

disconnection

ensured

even

when

the

handset

lightly

carelessly

replaced.

Under

the

cradle

and

convenient

distance

from

the

handset

there

carrying

grip

facilitate

the

moving

the

telephone

instrument.

This

execution

far

superior

ch t

ype

s wher e

extra

arrangements

have

been

added

the

ca-se

afterwards

where

metal

handles

have

been

fixed

the

case

means

screws.

The

frame

for

the

subs

riber

number

fixed

the

front

the

case,

allowing

both

subscriber

number

and

routing

number

, or

nam

e of

exchange,

typed.

The

base

plate,

shown

fig. 7

made

sheet

steel,

zinc-electro-

plated

with

yellow

hromate

coating

and

laquered

. Unlike

L M

Ericsson~

s e

arlier

telephone

instruments,

the

base

plate

this

instrument

has

raised

edges

ensure

mechanical

stability.

The

various

units

can

then

keyed

into

the

base

plate

without

affecting

its

mechanical

strength,

despite

the

fact

that

thin

metal

used.

The

base

plate

has

four

non-slip

feet

neopren,

durable,

migration-free

synthetic

rubber,

which

hold

the

instru-

ment

steady

during

dialling

The

slots

the

base

plate

permit

ulation

the

ringer

and

supply

locking

support

for

the

various

units

mounted.

TCI Library www.telephonecollectors.info

3.2

Ringer

the

cord

inlet

the

base

plate,

hole

has

been

made

the

raised

edge.

The

cords,

which

can

thereby

rem

oved

one

time,

lock

each

other

and

ensure

tight

packing.

Fig.

The

base

plate

from

above

The

ringer

mechanism

(fig. 8

and

mounted

on a

plate

(1)

provided

with

three

tabs

which

are

inserted

slots

the

base

plate.

addition

there

hole

the

centre

the

ringer

mechanism

plate

which

projecting

stud

the

base

plate

fits

when

the

ringer

mechanism

has

been

correctly

oca

ted.

Fig.

The

bell

unit

The

ringer

connected

the

screw

terminals

the

trans-

mission

unit

means

of two

PVC

insulat

conductors

uipp

with

cable

lugs.

The

ringer

the

polariz

type

with

single

winding

(3)

and

small

AlNiCo

permanent

magnet

(2).

flux

generated

the

permanent

magnet

and

the

flux.

iginatin

from

the

ringing

current.

superimposed

only

the

''air

gap'

which

gives

maximum

signalling

efficiency.

The

"air

gap"

easy

adjust

and

the

coil

replaceable.

The

coil

former

made

Formaldehyde-plastic

and

wound

with

copper

wire.

insulated

shellac.

All

the

iron

parts

are

zinc-electroplated

with

yellow

cro

mate

coating

and

laquered.

TCI Library www.telephonecollectors.info

Fig,

The

bell

unit

parts

The

gongs

(4)

are

sheet

brass

and

the

fixing

holes

are

eccentric

permit

easy

adjustment

for

maximum

sound

intensity

. Two

pillars

are

riveted

the

ringer-plate

order

support

the

gongs

and

the

resonator

cups

(5).

The

ringer

produces

pleasant

sound

penetrating

even

people

with

impaired

hearing

(limitation

hearing

generally

starts

high

frequencies).

These

important

properties

are

obtained

result

the

gongs

having

different

pitches,

and

the

subharmoni

the

signal

being

amplified

Helmholtz

resonators

(5).

The

Ringer

Output

Spectrum

shown

fig. 10.

The

ringer

can

equipped

with

sound

regulation

required.

reducing

the

movement

the

bar

means

of a

tag

under

the

in-

strument.

the

sound

intensity

the

ringer

can

easily

altered

continuous

regulation

from

full

output (74 dBa)

the

soft

signal

buzzer

(45 dBa).

The

impedance

(c/

s).

with a 1 µ F

capacitor

series

with

the

bell,

4 500 Ohm.

and

800 Hz (c/

000 Ohm.

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