Rotel RT-870 Manuale utente

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owner’s.

manual

Quality.

Uncompromised

RDTEl

RT-870

AM/FM

STEREO

TUNER

RT-870L

MW/LW/FM

STEREO

TUNER

ENGLISH.1

DEUTSCH.6

FRANCAIS.10

WARNING

TO

PREVENT

FIRE

OR

SHOCK

HAZARD.

DO

NOT

EXPOSE

THIS

APPLIANCE

TO

RAIN

OR

MOISTURE

Write

your

SERIAL

NUMBER

here.

The

number

is

located

near

the

name

plate

on

the

rear

panel.

SAFETY

INSTRUCTIONS

Warning:

To

reduce

the

risk

of

fire

or

electric

shock,

do

nol

expose

this

appliance

to

ram

or

moisture

CAUIKMI

10

orouci

IN!

Risk

or

mcnuc

shock

DO

HOI

RIMOV!

C0V!R

lOR

SACK)

NO

US!RS!AVIC!A6U

PARTS

IRSID!

Bills

S!RVICIRC

10

OUAtllliD

StRVICi

PERSONNII

The

lightning

flash

with

arrowhead

symbol,

within

an

equilateral

triangle,

is

intended

to

alert

the

user

to

the

presence

ol

uninsulated

"dangerous

voltage"

within

the

product's

enclosure

that

may

be

ol

sufficient

magnitude

to

constitute

a

risk

ol

electric

shock

to

persons.

A

The

exclamation

point

within

an

equilateral

triangle

is

intended

to

alert

the

user

to

the

presence

of

important

operating

and

main¬

tenance

(servicing)

instructions

in

the

literature

accompanying

the

appliance

"Note

to

CATV

system

installer:

This

reminder

is

provided

to

call

the

CATV

system

installer

s

attention

to

Article

820

22

ol

the

NEC

that

provides

guidelines

lor

proper

grounding

and.

in

parliculai

specifics

that

the

cable

ground

shall

be

connected

to

the

groun¬

ding

system

ol

the

building,

as

close

to

the

point

ol

cable

entry

as

practical

'

I

Read

Instructions

—

All

the

safety

and

operating

instructions

should

be

read

before

the

appliance

is

operated

2.

Retain

Instructions

—

The

salety

and

operating

instructions

should

be

retained

lor

future

reference.

3

Heed

Warnings

-

All

warnings

on

the

appliance

and

in

the

operating

instructions

should

be

adhered

to

4.

Follow

Instructions

—

All

operating

and

use

instructions

should

be

followed.

5.

Water

and

Moisture

—

The

appliance

should

not

be

used

near

water

—

lor

ex¬

ample.

near

a

bathtub,

washbowl,

kitchen

sink,

laundry

tub,

in

a

wet

basement,

or

near

a

swimming

pool,

and

the

like.

6

C

arts

and

Stands

—

The

appliance

should

be

used

only

with

a

cart

or

stand

that

is

recommended

by

the

manufacturer

6A.

An

appliance

and

cart

combination

should

be

moved

with

care

Quick

stops,

excessive

force,

and

uneven

surfaces

may

cause

tho

appliance

and

carl

combination

to

overturn

7

Wall

or

Ceiling

Mounting

—

The

appliance

should

be

mounted

to

a

wall

or

ceiling

only

as

recommended

by

the

manufacturer

8

Ventilation

—

The

appliance

should

be

situated

so

that

its

location

or

position

does

not

interfere

with

its

proper

ventilation

For

example,

the

appliance

should

nol

be

situated

on

a

bed.

sofa.

rug.

or

similar

surface

that

may

block

the

ventilation

openings,

or,placed

in

a

built-in

installation,

such

as

a

bookcase

or

cabinet

that

may

impede

the

flow

of

air

through

the

ventila¬

tion

openings

9

Heat

—

The

appliance

should

be

situated

away

from

heat

sources

such

as

radiators,

heat

registers,

stoves,

or

other

appliances

(including

amplifiers)

that

produce

heat

!0

Power

Sources

—

The

appliance

should

be

connected

to

a

power

supply

only

of

the

type

described

in

the

operating

instructions

or

as

marked

on

the

appliance

11.

Grounding

or

Polarization

—

The

pre¬

cautions

that

should

be

taken

so

that

the

grounding

or

polarization

means

of

an

appliance

is

not

defeated.

12

Power-Cord

Protection

—

Power-supply

cords

should

be

routed

so

that

they

are

not

likely

to

be

walked

on

or

pinched

by

items

placed

upon

or

against

them,

paying

par¬

ticular

attention

to

cords

at

plugs,

con¬

venience

receptacles,

and

the

point

where

they

exit

from

the

appliance

13

Cleaning

—

The

appliance

should

be

cleaned

only

as

recommended

by

the

manufacturer.

14

Nonuse

Periods

—

The

power

cord

of

the

appliance

should

be

unplugged

from

the

outlet

when

left

unused

for

a

long

period

of

lime

15

Object

and

Liquid

Entry

—

Care

should

be

taken

so

that

obiects

do

not

fall

and

liquids

are

not

spilled

into

the

enclosure

through

openings.

16

Damage

Requiring

Sevice

—

The

appliance

should

be

serviced

by

qualified

factory

authorized

service

personnel

when:

A

The

power-supply

cord

or

the

plug

has

been

damaged;

or

B.

Objects

have

fallen,

or

liquid

has

been

spilled

into

the

appliance;

or

C.

The

appliance

has

been

exposed

to

rain,

or

D

The

appliance

does

not

appear

to

operate

normally

or

exhibits

a

marked

change

in

per¬

formance;

or

E

The

appliance

has

been

dropped,

or

the

enclosure

damaged

17

Servicing

—

The

user

should

not

attempt

to

service

the

appliance

beyond

that

described

in

the

operating

instructions

All

other

servicing

should

be

referred

to

qualified

factory

authorized

service

person-

nel.

Power

Lines

—

An

ouldoor

antenna

should

be

located

away

from

power

lines.

iK.iunc

t-xuvr

i

*

ni

AU'cnrvi

c

jroun

j

no

as

'ir

ma'iomai

iikm

ils

con

iii.'.o:

kjms

COM

AINtU

fl

AH’Tlf

A

c

-

rlflK)

AMS

ff.fvriiow

fcOifMMCMT

Outdoor

Antenna

Grounding

—

If

an

outside

antenna

is

connected

to

the

receiver,

be

sure

the

antenna

system

is

grounded

so

as

to

pro¬

vide

some

protection

against

voltage

surges

and

built

up

static

charges

Section

810

of

the

National

Electrical

Code.

ANSI/NFPA

No.

70—1984.

provides

information

with

respect

to

proper

grounding

of

the

mast

and

supporting

structure,

grounding'of

the

lead-in

wire

to

an

antenna

discharge

unit,

size

ol

grounding

con¬

ductors.

location

of

antenna-discharge

unit,

con¬

nection

to

grounding

electrodes,

ana

re¬

quirements

for

the

grounding

electrode

See

T

igure

u

Use

No

10

AWG

(f>

3

mm

7

)

copper.

No

8

AWG

(8

4

mm*)

aluminum.

No

17

AWG

(1

0

mm

7

)

copper-clad

steel

or

bronze

wire,

or

larger,

as

a

ground

wire

^Secure

antenna

lead-in

and

ground

wires

lo

house

with

stand-off

insulators

spaced

from

4

6

feet

(1

22

-1

83

m)

apart

c

Mount

antenna

discharge

unit

as

close

as

pos

sible

to

where

lead-in

enters

house

separate

antenna-grounding

electrode

is

used

See

NEC

Section

810-21

(j)

FOfl

U.S.A.

ONLY

ENGLISH

AM/FM

STEREO

TUNER

RT-870

MW/LW/FM

STEREO

TUNER

RT-870L

INTRODUCTION

ANTENNA

INSTALLATION

AND

CONNECTION

We

at

Rotel

want

to

thank

you

for

purchasing

our

audio

product.

Rotel

audio

products

are

designed

to

use

the

latest

elec¬

tronic

technology,

and

they

incorporate

our

long

experience

as

a

specialist

manufacturer

of

audio

equipment.

We

are

confident

that

you

will

find

satisfaction

in

the

high

quality

sound

and

top

performance,

and

that

you

will

find

pleasure

in

the

functional

beauty

achieved

through

human-engineering

concept

Before

starting

operation,

please

read

this

instruc¬

tion

manual

thoroughly

and

acquaint

yourself

with

the

proper

mode

of

using

the

unit

and

all

its

connections.

We

hope

you

will

enjoy

top-notch

performance

for

many

years

to

come.

INSTALLATION

Be

sure

to

place

the

unit

in

a

level

and

flat

place

where

it

is

free

from

humidity,

vibration,

high

temperature

and

not

to

place

the

unit

in

a

highly

enclosed

place

such

as

near

a

wall

or

on

a

bookshelf.

A

poor

ventilation

will

cause

undesirable

effects

to

the

unit.

POWER

SUPPLY

CONNECTION

For

power

the

unit

requires

the

normal

house

electrical

cur¬

rent

(AC).

You

may

simply

plug

the

unit

into

a

wall

outlet,

or

into

your

amplifier’s

(or

receiver's)

convenience

AC

outlet.

CAUTION:

Do

not

apply

power

without

first

making

sure

the

proper

connections

are

completed.

If

you

live

in

U

K.

and

your

unit

comes

with

2-core

cord

without

a

plug,

be

sure

to

read

the

exclusive

caution

for

U

K.

EXCLUSIVE

NOTE

FOR

U.K.

If

your

unit

comes

with

a

2-core

cable

without

a

plug,

make

certain

live

and

neutral

leads

are

connected

to

the

proper

terminals.

Check

that

the

terminals

are

screwed

down

firmly

and

no

loose

strands

of

wire

are

present.

IMPORTANT:

The

wires

in

this

mains

lead

are

coloured

in

accordance

with

the

following

code:

BLUE:

NEUTRAL

BROWN:

LIVE

As

the

colours

of

the

wires

in

the

mains

lead

of

this

ap¬

paratus

may

not

correspond

with

the

coloured

markings

identifying

the

terminals

in

your

plug

proceed

as

follows.

The

wire

which

is

coloured

BLUE

must

be

connected

to

the

terminal

which

is

marked

with

he

letter

N

or

coloured

BLUE

or

BLACK.

The

wire

which

is

coloured

BROWN

must

be

connected

to

the

terminal

which

is

marked

with

the

letter

L

or

coloured

BROWN

or

RED.

CAUTION:

To

prevent

electric

shock

do

not

use

this

(polarized)

outlet

unless

the

blades

qan

be

fully

inserted

to

prevent

blade

exposure.

■

FM

Antenna

Proper

installation

of

antenna

is

the

key

to

smooth

signal

reception.

To

install

the

attached

T-shape

indoor

antenna,

stretch

it

taut

and

secure

horizontally

along

a

wall

or

the

like

in

a

location

where

signal

reception

is

optimal.

Securely

connect

the

antenna

to

FM

antenna

terminals

marked

"300fi"

on

the

rear

panel

if

outdoor

type

FM

antenna

is

installed,

the

T-shape

antenna

is

not

necessary.

For

proper

use

of

your

outdoor

FM

antenna,

follow

the

instructions

below.

1.

Be

sure

to

select

the

most

appropriate

type

of

antenna

for

the

signal

reception

conditions

in

your

area.

2.

A

75-ohm

coaxial

cable

is

recommended

in

connecting

the

antenna

to

the

unit.

3.

Set

the

antenna

in

a

position

as

high

as

possible

if

buildings,

mountains

or

other

obstructions

nearby

affect

reception.

4.

The

75-ohm

coaxial

antenna

cable

should

be

properly

hooked

up

to

the

designated

antenna

terminals

on

the

rear

panel:

Locate

the

terminals

labeled

"750”

750

COAXIAL

ANTENNA

■

AM

Antenna

The

loop

antenna

is

provided

for

optimum

AM

reception.

Attach

the

loop

antenna

onto

the

antenna

holder

on

the

rear

panel,

and

connect

the

lead

wires

to

the

antenna

screw

ter¬

minals

marked

"G

and

"AM”.

If

an

outdoor

antenna

is

desired

for

better

reception

due

to

difficult

reception

area,

connect

such

antenna

to

the

same

screw

terminals

as

the

loop

antenna.

Please

note

that

the

loop

antenna

should

be

left

connected

to

the

terminals

even

when

the

external

antenna

is

connected.

LOOP

AM

ANTENNA

2

CONNECTION

TO

INTEGRATED

AMPLIFIER

Using

RCA

pin

cords,

securely

connect

the

OUTPUT

ter¬

minals

on

the

rear

panel

of

the

unit

to

the

TUNER

(or

AUX)

terminals

of

amplifier.

Make

absolutely

sure

that

RIGHT

terminal

of

one

unit

is

connected

to

the

RIGHT

terminal

of

the

'other,

and

LEFT

to

LEFT

SWITCHES

AND

CONTROLS

(1)

Power

Button

This

button

turns

on

the

unit.

The

LED

indicator

above

it

will

glow

when

the

power

is

on.

Press

the

button

a

second

time

to

turn

off

the

power

CAUTION

As

long

as

the

power

cord

is

plugged

into

an

AC

outlet,

power

is

supplied

to

the

unit

regardless

of

the

setting

of

the

Power

Button.

(2)

Signal

Strength

Indicator

A

tuning

condition

is

indicated

by

the

digital

display

from

"0”

to

"5”.

The

higher

the

number,

better

the

reception.

“5"

indicates

an

optimal

reception.

“0”

is

on

usually

between

station.

(3)

Stereo

Indicator

Glows

when

stereo

broadcasting

signal

is

tuned

in

Note

that

when

stereo

signal

is

very

weak,

the

unit

will

not

give

stereo

reproduction,

and

the

indicator

will

not

light

up.

(4)

Frequency

Display

Indicates

frequency

currently

tuned

in,

along

with

1

notation

“FM"

and

"MHZ”

in

FM

reception,

or

“AM”

and

“KHZ”

in

AM

reception

The

word

“MEMO"

will

appear

when

Memory

Program

button

is

pressed.

(5)

Station

Buttons

These

buttons

are

used

to

tune

in

to

desired

preset

stations,

or

to

preset

given

station

frequencies

in

unit's

memory.

Each

station

selected

will

be

indicated

by

LED

(6)

Tuning

Button,

UP

Used

when

tuning

in

a

station

whose

frequency

is

higher

than

the

reading

on

(he

frequency

display

(7)

Tuning

Button,

DOWN

Used

when

tuning

in

a

station

whose

frequency

is

lower

than

the

reading

on

the

frequency

display

(8)

Memory

Button

To

enter

a

given

station

frequency

into

the

unit’s

memory

circuit,

press

this

button

first,

and

then

tap

the

desired

sta¬

tion

button.

AMPLIFIER

RT-870

(9)

FM

Auto

Tuning

Button

Depressing

this

button

changes

FM

tuning

mode

from

manual

to

automatic.

This

button

has

no

effect

on

AM

tuning,

which

can

be

done

in

manual

mode

only.

(10)

FM

Wide

Button

Push

this

button

on

to

WIDE

for

a

wider

bandwidth

to

en¬

joy

better

FM

sound.

If

there

is

too

much

hiss

or

noise

from

neighbouring

stations,

etc.,

push

the

button

to

the

off

position

for

a

normal

bandwidth

to

cut

off

such

noise

as

mu¬

ch

as

possible.

(11)

RF

ATT

Button

This

button

is

used

only

when

you

have

a

strong

signal

station

nearby

which

gives

too

much

noise

at

reception.

The

button

when

activated

will

attenuate

the

RF

gain

by

6

dB

to

reduce

such

noise.

(12)

FM

Mute

Off/Mono

Button

When

this

button

is

pressed

to

ON,

any

FM

broadcast

is

received

monaurally.

Be

sure

to

leave

the

button

in

the

released

(OFF)

position

during

normal

stereo

FM

reception

In

the

OFF

position,

interstation

noise

generated

when

tun¬

ing

in

an

FM

station

will

be

reduced.

(13)

Hi-Blend

Button

Allows

you

to

reduce

annoying

noise

mixed

in

with

signal.

This

switch,

however,

should

not

be

always

left

at

OFF

po¬

sition

unless

it

is

necessary.

(14)

AM

Wide

Button

Push

this

button

on

to

WIDE

for

a

wider

bandwidth

to

enjoy

better

AM

sound.

If

there

is

too

much

hiss

or

noise

from

neighbouring

stations,

etc.,

push

the

button

to

the

off

position

for

a

normal

bandwidth

to

cut

off

such

noise

as

much

as

possible.

(15)

AM/FM

Selector

Press

AM

button

for

AM

signal

reception,

and

FM

button

for

FM

signal

reception.

RT-870L

gives

AM

reception

in

either

MW

or

LW

mode

Depress

MW

button

for

middle-wave

reception,

and

LW

button

for

long-wave

reception.

OPERATION

•

The

RT-870

(RT-870L)

employs

a

quartz

PLL

syn-

thesier

for

easy

and

accurate

tuning.

Tuning

frequency

is

visible

on

the

digital

readout,

and

you

can

tune

in

to

the

desired

station

accurately.

With

the

unit’s

memory

circuit,

you

can

preset

memory

tuning.

This

is

a

feature

only

a

syn¬

thesized

tuner

can

offer,

letting

you

recall

a

stored

station

frequency

instantly

with

a

single

tap

of

a

button.

•

One

station

button

can

store

one

AM

or

one

FM

station

in

its

memory.

The

RT-870

permits

a

total

of

16

stations

to

be

stored,

be

each

station

AM

or

an

FM.

For

example,

you

could

store

12

FM

and

4

AM

station

randomly.

•

The

power

source

of

the

unit’s

memory

citcuit

is

the

capacitor

back-up

type.

If

power

cord

is

unplugged,

or

if

there

is

a

power

failure,

the

electrical

energy

accumulated

in

the

capacitor

while

the

unit

was

ON

will

retain

the

frequencies

stored

in

the

memory

circuit

for

three

days.

(The

memory

is

retained

as

long

as

the

power

cord

is

plugged

into

an

AC

outlet,

regardless

of

the

position

of

the

POWER

button.)

If

you

leave

the

power

cord

unplugged

for

over

three

days,

the

stored

frequencies

will

be

lost.

•

Before

commencing

operation,

check

to

make

sure

all

antenna,

amplifier

and

power

connections

are

properly

made.

1.

Set

the

volume

control

on

the

amplifier

to

minimum

position,

and

amplifier

function

switch

to

TUNER

position

(or

to

AUX

position

if

the

tuner

is

connected

to

AUX

terminal).

2.

Turn

on

the

amplifier

and

press

the

POWER

button

on

the

tuner.

3.

Depress

FM

or

AM

button

of

the

tuner

function

selector

On

RT-870L

select

among

FM.

MW.

and

LW

buttons.

4.

Tune

in

to

the

desired

station

by

means

of

tuning

or

station

buttons.

(See

section

on

“Tuning".)

5.

Raise

the

volume

to

the

desired

level,

and

enjoy

listening

Tuning

The

unit

is

designed

to

permit

three

modes

of

tuning:

auto

tuning,

manual

tuning,

and

preset

memory

tuning.

•

Auto

Tuning

(for

FM

Reception

Only)

Set

FM

Auto

Tuning

button

to

the

depressed

position.

Press

Tuning

button,

UP

or

DOWN.

Automatic

scanning

of

FM

band

begins.

Scanning

stops

when

it

reaches

a

point

where

the

input

signal

exceeds

a

certain

acceptable

level.

To

tune

in

to

another

station,

press

DOWN

or

UP

button

according

to

the

frequency

of

the

desired

station.

•

Manual

Tuning

Set

FM

Auto

Tuning

button

to

the

released

position.

A

tap

of

the

tuning

button,

DOWN

or

UP,

will

shift

the

tuning

frequency

in

specified

increments.

If

you

keep

the

button

pressed

down,

the

frequency

will

change

continuously.

Release

the

button

to

stop

frequency

change.

•

Preset

Memory

Tuning

Tune

in

to

the

desired

station

in

either

auto

or

manual

tuning

mode.

Press

the

Memory

Program

button

Then,

press

any

station

button,

1

through

16,to

enter

the

frequency

into

the

memory

circuit.

Thereafter,

you

may

recall

the

same

frequency

any

time

simply

by

pressing

the

same

button.

Note:

that

once

the

Memory

Program

button

is

pressed,

you

must

press

the

appropriate

station

button

within

several

seconds

to

enter

the

station

frequency.

If

more

time

elapses

before

you

press

the

station

button,

entry

cannot

be

made.

In

that

case

start

again,

following

the

above

procedures.

The

above

procedures

should

also

be

followed

to

change

the

station

preset

for

a

given

station

button

Note:

If

you

have

turned

off

the

unit,

and

turn

it

on

again,

the

unit

will

tune

in

to

the

station

frequency

to

which

it

was

tuned

immediately

before

turn-off.

HUM

AND

NOISE

Hum

often

accompanies

activation

of

power

supply.

If

hum

is

generated,

try

replugging

the

power

cord

into

the

wall

outlet,

reversing

the

plug

this

time.

Other

possible

causes

of

hum

include

improper

routing

of

connecting

cords

(try

changing

cord

position),

or

incorrect

pin-plug

insertion.

Check

all

connections

if

hum

persists

If

noise

is

introduced,

it

is

usually

caused

by

improper

positioning

of

antenna

cable

or

improper

antenna

installation.

Use

a

75-ohm

cable

for

outdoor

FM

antenna

and

minimize

multipath

to

obtain

optimal

signal

reception.

Note

that

during

signal

reception

the

unit

may

pick

up

noise

from

other

household

electric

appliances

(as

when

switching

power

on

or

off).

In

that

case,

check

the

relative

location

of

the

appliances

and

keep

them

away

from

the

unit,

or

vice

versa,

as

necessary.

Note

1:

In

a

location

near

a

broadcasting

station,

very

strong

signals

may

cause

noise

or

distortion,

depending

on

the

type

of

antenna

used.

In

that

case,

install

an

attenuator

between

the

antenna

and

the

tuner.

Note

2:

Inside

a

concrete

building.

FM

signals

are

weakened

and

satisfactory

reception

may

be

difficult.

An

outdoor

FM

antenna

will

best

remedy

such

a

situation.

VOLTAGE

SELECTION

Not

availble

for

U.K.,

Canada

and

Scandinavia

The

unit

is

a

variable

voltage

equipment

that

can

run

on

120V,

220V

or

240V

power

supply

Your

unit

should

already

be

preset

at

the

proper

voltage

for

use

in

your

area.

However,

if

you

move

to

an

area

where

the

power

supply

voltage

is

different,

consult

your

dealer

SPECIFICATIONS

FM

TUNER

SECTION

Usable

Sensitivity.

50dB

Quieting

Sensitivity:

Mono.

Stereo.

Signal-to-Noise

Ratiofat

65dBf):

Mono

.

Stereo.

Harmonic

Distortion(at

65dBf):

1

kHz.

Frequency

Response.

Capture

Ratio.

Alternate

Channel

Selectivity

Wide/Narrow.

Adjacent

Channel

Selectivity.

..

Spurious

Response

Ratio.

Image

Response

Ratio.

IF

Response

Ratio.

AM

Suppression

Ratio.

Stereo

Separation:

10OHz/1

kHz/10kHz.

Subcarrier

Product

Ratio.

SCA

Rejection

Ratio.

Antenna

Input.

10

8dBf/0.95/iV(75

ohms)

,

1

4.8dBf/1,5*iV(75

ohms)

37

2dBf/20|iV(75

ohms)

80dB

75dB

.0.07%(mono).

0.25%(stereo)

.30

to

15.000

Hz,

+

0

5dB.

-0.5dB

I.OdB

60dB/80dB

15dB

(Narrow)

lOOdB

70dB

,95dB

58dB

43dB/48dB/38dB

55dB

70dB

.75

ohms

unbalanced.

300

ohms

balanced

AM

TUNER

SECTION

MW

LW

(RT-870L)

Sensitivity.350)<V/m

750^V/m

Selectivity

(Wide/Narrow).27df5/42dB

25dB/40dB

Singal-to-Noise

Ratio.52dB

52dB

Image

Response

Ratio.40dB

40dB

IF

Response

Ratio..40dB

40dB

Antenna..Loop

antenna

MISCELLANEOPUS

Power

Requirement.

Power

consumption.

Dimensions

(overall)

Weight

(net).

120V/60

Hz.

220V/50

Hz.

240V/50

Hz.

or

120,

220.

240V/50-60

Hz

(switchable)

(depending

on

destinations)

.10

watts

.444W

X

66H

x

327D

mm

17'/T

x2'Vi6”

x

127a"

3.9kg/8

58

lbs

•

Specifications

and

design

subject

to

possible

modification

without

notice.

5