Sherwood MICRO/CPU 100 Istruzioni per l'uso

Ðeârtr

fomêr:

Yaar,She"lyL'CIc<l

llílcR}/cPu t?a

Tuner.reþrësents

a stftte."al,úe4rt leteî ìn

compt*èr

lerknolaEy'

apptied lar the fírst time

to a hìgh-fidelity

r:omp<tnent,

The contl¡inutiott

af

features

and

perfrsrmuice

rhis tuner

pravides

vvailt!

be impaxíble

to abtoin

using

conwntìonul technaloay,

ond we

at

Sherwood

a¡e confident

thdt these unparoltelerl

technolagÍml

otíwnces will

pr<tvide

yàu

with tîr¿ny

.¡ears

ûf

penonal

plausure

and

enjoyment,

Thank

ynu

for

choasfng

therwoad!

Sin¡:erely.

Shrluw<xtã

I'i lectr/J

¡tics

I"abüatttries,

l¡t c,

Contents

Frnnt

Panel

Feaülres,

lnstallation

.

Tunar

tonrTectíon

Tuner

Rrcepticrr

.

Trrner Operation

,

Additisnal Feâtur,us

.

Block Diogram

Specifications

TyBical

Perfarmance Curves

.

Cornmon

I

rrstal

lation

Problums

Notes

l,Vårrünlv

I nf

ormatíon

Station

Log

4

u

U

7

fi

x1

1e

14

T6

tlt

zCI

2'1

22

wARhl*Nc:

rO

PRËVËNT f tñE OR

SHOGK

HA?ARA,

DO NOT

gXpOSE

TT{IS TUFJER

TO RAII\I

OR

MOI$TUNE

-2-

ii

!ì

t:

ffts

ens}pred:stsr,r.qnty'.sald m¡pt

he

:.fil]ñd

is$t.:ralTd; r#t$raêd

iu

Strsr¿Íüsd;withîfi.

,I.ü.:dayçsfær

,rççfrfjrt 9f

vg¡;riltu¡gr

ro tu-ÍfrJf.l*areantf

r,çqglr,emçpts,

lhç cnr¡acr

nrsdpt:sÍ{d:$rial

Fqmber.øn

;h

rç,.Þ{rçd

:fru¡l:'tfp

hqclc

i{âhÊt::ol

:W$i.

t¡t¡¡t

üAv€

-T'gfJ'$

S¡4,!;R$i'ff ES8IFI*FROSF

ñ€sÚ"

ffiIN6

lÄfAH,frAf{TY

$€Baú'tcË.

:ts$ìr¡!Êd trÉJ:rrid,Ê

¡íffrmätürn

;DËFbflrrfê{ü..

:FI(âTA

ùp'êcfftt

,ûg"fr:çSFondßncs.

#F,ÞArE

oË F¡¡Fêt{d#E:.

L$i Rtü$

I RGg

.tïÉlFN

i*

availabln

rilni

rçgt¡çr-t

fiom

$hçfrimod'r

TerçÌffifsal

thb

;êXstt:

llrÞ$ç,1ì

fid

,Êår.idl

rrrfirrþcr

qf'

.fgüf

tu¡lef :in

IL-

-fl;

Frsnt

Panel

Feafirres

F igure

I

-.4-

1.

pfigGRAM

svlllTCHÊSt

permit

programrning

into

memory

ûl up to

4s sets

of

statiçn

identification

uharacters

for reado$t

on the Alpha

Numeric

LEF Display'

{Page

8'}

n" SIGÍìIÅL

STRET\IûTH

M€TEfi:

lndicares

th*

relativä

signal

strqnglh

of the selected

FM ltation.

tPage

7.1

3. MULTIfATH

MGTEF:

lndinater ths

âmount

sf srrdesirable,

reflected

signal being

received

älong

$J¡th

the main

trånsmitter

$ignnl

fcr best

antenna

orientatlon'

(Page

?")

4.

MEMOñy

ûl{llTCHEsl

4 touch s\rilch

conrrok

rhat

ofter con$ßnient

stûrage of

4 f¡vorite ttðt¡onå

fqr

instant

tuning"

{Page

9.}

5.

ILLUMIilATËÛ

TUNING

STÅLË.

û, ANALOÍ¡

nlAL

Fü¡NTEÊ:

Miniature

LEt*

arranged

in a lirre

below

the tuning

scãle to

indicate

the movemeÌìl

of

a conventional

di¡l

Fointer.

(Page

8'I

7. ALPHA

l\tUMEElc

tllspt-Ay:

4.character

LEÞ

readuut

used

with the

Prngram switches

{or up

to 48 sets

of

user-programmable

letlerlnumbsr

conblnations'

(Fage

8')

t.

DlGlîAL

TREOUENCY

DlsptAy:

Large

LES

di:play

that

indicates

the

exûcÎ frequency

of

the

ståtion

selecTed.

(Page

B.!

s. Auîû.ÎcAl¡

swlTcHESl

nighl

{and

Le{t} rouch

switches

thät

scån up

{a¡r¡d

clownl

the FM

band

to

the next

lrrcadcasting

$tat¡on

or $1ërço

broadcasting

station'

(Page

9']

10.

ûOCIR

Pl\NEL:

For

convenient

acce$s

1o

variour contrtl

functiqns.

11.

OUTFUT

LËvËL

coNTHOL:

Volume

control

for matchÎng

the tuner

output

level

to thãr

tf other ¡ignal

çrurce$

in

your

tystem.

(Page

6-l

12. ruuïlftû

LEVEL

CCNTBOL:

Adjusts the

thrsshold

åt

which intefstatìon

noise

and

very

weak 5tôt¡ons

âre

mu'ted

when

tuñing

belween

desired

sTãtions,

tPaqe

1Û')

13.

MUTING

$wlTcli:

Defeats

the mfi¡ng

of very

weak stationr

{ancl

interstation

noise}

permitling

fecept¡on

st

any

signal

,strong

enough

to

be

detectd

by

thn 11169¡'

(page

10')

14. SELËcrlvlTy

$wlrsH;

2 seÊarate

lF systems

províde

both

a

"Normâl"

bandwidth

for

superb

selectivitY

and

a

"Wirie"

bandwidlh

for

exceptionãl

stereo

fideliry^

{Fage

1CI-}

15.AuTt

$TEÊ80

FILTER

$UllTCH:

0ffers

maximum

noise

reducti¡:¡rr

on noisy

stereö

bfÕãdcarts

with

a

rninirnum

of

lost

of

high

frequencY

re$fionie.

{Page

l0'}

16-

IVIOOE

$l,lJlTCH:

Provides

for rhe selection

o{ either

Stereo

or

Mono modn

of opÊråt¡Ön'

1?. OEEMpHllsl$

stlrtTcHl

$elects

proper

deemphasis

{equalization}

{or either

normal

FM transmi$ion

or t5¡rsec

specially

encoded

broadcasts.

(Page

10.)

1g"

îuNlfic

CÕNTñOL:

tqerates

an

electronic

deteclion

r¡rcuit

that

provides

smoath acro¡s-the'dial

tuning

w¡thóut

the error

and

mechanical

limitations

associated

with

conventional

tlywheel

tystems.

tFage

8,)

19,

MAIN

POWER

$T¡¡ITÛH.

*5-

lVlren installing

the M|{IRûICPU tuncr,llte

fcllowirrg

sjtuati¡:rns

rhCIr¡ld b¿

avt¡ided that could

possibly

damagr:

ttle tuner:

r

Stacking

cornpünents

which

limits

venlílation:

.

Plaees

with

pt:or

ve ntihtiun;

r

Places

expnsed,

fi: direct tunliglrt, cluse

{o lteatirtg

unitc

or

¡lher

sar¡rcer

of heat;

r

Exces$ivel-v huruid

or dusty luualions;

r

Sloping

locali<xs cr

t[r

sc subject

tc¡ r'ibration.

IMPüR1'ÂNT: Á,llow

a(

leâst

Lwu

inches

of

space

behind

your

tunùr

for

adequate

ventil¿lion as wcll as

catrlíng c<]nvenience.

ì\cvcr

plac* the utì¡t

netr

lnstallatíon

Tuner

Çsnnecfton

rodiators

or in front cf

hcaling vents.

Ëxcessivs

helt

tcnds tc¡

shorlen

the

life

a[ Úte intçilìal

r:ompunents.

(Thi¡

ia

aR inrportanl

facl to rcmeinlrc¡

irt c*ring

f'rrr

cll the clümeilts

of

yr¡ur

ltigh-fìdclity õysleln,

includirrg

¡ecurd¡r

and tapcs.)

VERTICAL

MûIINTINû:

,{lthough

ycur

Sherwoad

MICRCIiCPU

loû

is derigned

lo be

placed in

a

horiz¡nt¿l

posilio¡1, it .may

lie

nlounled

vertically

(wiilr

fh*

face

plate

up).

ln this Ìypc

of ir¡slallation,

úo not

u$€ thc

encloeure.

Thc tunel

may

be

suppcrted

complctely by

jt¡

cscutchccl:t

itt

¿l {:u$l*m

irrstaltatÌon;

howcv$r"

this

type of

*tçport

is

not

adeqtrale

tu

wi(hstand thippin$

The MICR0/CPU

tuner $f:fers fwô ltlâilì

auditt

qrutputs:

F¡XUD

and VARIABLË.

The

fixed ouTput

ol'fers a

ncminal ùutput level that

is

governrd

by

tlte

tuner

and

nevet varies, Fur

tnpe

recording

directly

from

the

tuner

r.rr feeding Ít 3tcrßo

sy$tËtn

that

requires a nonvlrying

signal

*tlurce,

this

pair

of

ùulputs would be selectcd"

The Varilble

(tutput

isi

adjustulrtc with

â

front

panel volume ootrtrol

lrrcated

behind the d<lor

psflel,

and ir

usually

the chüice

I'ctr

rnost

ster€ü

uyutem* si¡tcc it

p*rmits adiusling

thr:

tr¡nsÍ Ëütput

to match that üf nthcr

srrurce.s

(tape,

phono,

ütc.).

"llhis

will rlso

aid taping,

exlernal

pracessing or

nfhst

cüffpenents

in

yrrur

aystcrn

ilrat

måy

require

aúju*tment if a

sigrr*l level

r¡nries

bctwe€n

sÐufce$.

lJsing

the

¡ruir

l:f'cttblcs pru:i'ided,

connctt

lhe tulrer

ùr¡tput Ûf

yout

choice

1o fltc

tune¡

{crr

aux'J inpnts

Ûn

yonr

uorttrol

amplifier.

CÛMFO,$ITE

ÛUTPUT:

This

jack

is

providcd cn

lhe

back

psnel

fur

usE i¡t

conjunction

with ilI¡:ådi-lptÈr

{when

approvetl

by thc UCC}

tó

praducc

4 discreet

channels

lrom an FIü

sc¡urçe,

In the

sven{

that

tltü

Fcderal Cammuni¡:atiorts

Cori!¡il¡si$n

aPFrove$

å

standard mgthsd

crf 4+harurel

translnissiono $ller-

woorl will

then nffet

an FM 4{l*rxtcl adapter

l'or

uss

with this

jack.

-s-

FM

ANTE¡ìIÎI{A: The'dipole'

ânt€nna

provided

with

your

tufiÈr should

be

adequate

for local

FM

feceptio¡r. Cornect this anlenn¿

to

thç

t\ryo

terrnjnalr

marked '3û01;'on the

back of llre tuncr

per

Figure

2.

Attrc.l

the

antçnu¿'s 'ârms'

horieoltalìy

tú ír

nnn-ffetallic

surf¿c* such as a window, ¡ wall, or the

re¡rr

surfâce *f a

cabinet

nr

shelf-ïvhichever

pusitir:n

¡endsrs lhs

best

ovsrall r{ception,

In

generaf,

the

illtën:lâ ìs

bcst

posilionetl

when

it is as

high as

possible

aborc

lloor

level and its itxns

årc

peryendicr"rlar

to the

source

¡lf

trangmisícn.

l.[Çr.vever,

in some strong signal ltcalitics, plâeem*nf

under a rug

0r mrpet msy

provc

âcccptâble.

lf

you

are louated

a $ol*ideri¡ble

¡listancc lrom

the

FM t¡r¡nsn¡itl.er$, Ân oul.d<rnr

þM antenna

{availabìe

lrtrnr

your

Sherç'aad Dr:aler or

TV parts dìstributur)

mny

be

rer¡rrirecl

ta rcdr¡cc i:a*kground

rroisc.

ûrding,

<lr inte rferencc.

Thc

followirrg nutes

slrould be helpfirl

frrr

rny antÈrìna

i¡lstallafiun:

l. lt i*

alway's advisåble

tÕ kcep the ¿r¡tenna

cahle

as

shorÌ

as

pcrrsiLile.

2.

Try and keep tlrs

anlð¡tra

a:;

far

away as

prârticül

fiorn

the

ftreËt

fo

avoid

igni tiern

noise from

iu¡tûmobiler and ¡Íher

vchicles-

3.

Sincc

antcnnns

sre directionll,

its heighl

and

dircction

should

be adjusted

while

actuatly

receiving a

làvornbl¿

Flvl station.

Tuner

ñeceptisn

t'ttoon DtFoLt Foñ

LOCrt iÊc€¡tlor

4. Avoid

placing

the antenna

lcad.in

c¿ble

nesr

the

electrical

power

lìne that

eÍters

your

lrome .

lfhen

using a 75 ohm

antenná sysrem,

itr

enaxial

cable shr:uld be connected

as

flollows:

The

*uter

hraid

shicld

(ground]

should b*

held in

place

wirh

Íhe

mptal

br¿cket

per

Figrrre

2

(which

xko

estatlishes a

grr"runrJ

c(lrìfler:l.ìön lor the

shicldi and

lhe

lnner conductor

rvirc shoulcl

be c¡¡nnected rn

the lenr¡i¡¡al

marked

*75r}.',

SIGNAL

gTR[-.N{;TH

snd MULlìl}'.4Tll

MËT.FIRS:

A

ilûst ¡mf:ottrût

l-åútor

af}:cting FM signal

qualit-y

is

multipath rccepìion.

This

is

ca*sed by rignal

refleçrions

from hr¡ildings, hillr.

et{.}., ilul

rcactr

the

tune

t's âtìtsnn¡r lafr:r

ir¡

tinrç

than the

ndginal signal.

Parficularly

with

lîItl stereo,

multipath

ç{n

caïse

sever* disf¡:rlirrn

a¡rtl lrrss

(}t

channel

separation-

TÛ

help

combaf

ttre

eflecr¡ of' rnultiparh.

the

MICRü/

CPIJ 100 ernplnys

a Multipath

metër*it

visuat

readrlut

of thË

sf

rcrrgth

uf

unwanletl,

r*flc*rsd

signals-

Bocause antenna orientation

is

a big taclr:r

in

minimizing mrlt¡p¿th

receptiûn.

a dircctiunal

ãntê:trlâ

equipped

wi¡h

a

rûtor

to

"'¿i¡fr"

tl¡e ûntðnûå lor

miuinrlrrn

mullipal,h warrld

be

desirable.

Since

lhe

Sigtal

litr*ngth mc{cr irnlicstes the

relative

strenglh

of the

incomilrg signal

in

its entirery.

tiy

chucking

fhe

twü mëlÈrs t"or both

minimum

multipath and e:rough

Fþure

3

*]-

tc ttlrFtct

signal

$trèngth for

noise-free stôrso,

you

hav¿

n$limizÊd

rÈccption

for

any sel*cted

statiofl. lf Ìhe

tlipole

suppli*d or a directional

äñfenlìÍl tl"irhout å

rotor is

adequate.,

vary

tlr* âflÌcnnâ direc:lion until the

tiest c¡verall

avs¡age nl' signirl strength

and low

rnultipath

lor

fnrrorite itlâtions

it obtained.

The htlCRO/CFU l0û'l

computcr

lms s

ttiiling

åçcurâcy uf

great^er

than

.0Û24flat thcrefcrrx,

tlrc tuner

har

no need f'nr ¿

conventicnal "center-tunê" fiìetcÍ

or an

oscillosrope

1t

indic*te ¡rccurûte

trrning.

Ás

ncnlioncd, lhc fu¡o mctcrs are

provided

to aid i¡l

flroper

üntqnnä crirntation, and should

nat be trcâÎcd

írs

"motiimum deflecdon"

or'ocenter-luning'''

indicator¡.

Tuner

tperation

Once {he cüllnecti$ns

oullinrcl in the

have bec¡l

llrade,

your

MICRü/CPIJ

t0û

lun€r is

cnmpletely

opemtiunal.

Althorrgh

thc

MíCRO/CFU

100

is nût

dilfìcull

({}

(}pûrâtð,

careful

study

of this

section al' the opcraf or'$

ma*ual

will

allow

you

1o l"ully enjoy its

many ver:latìk

tþaturcs.

M.AHUÅL

TUNIN{i;

Your MtCRO1ilFU

lt}t

lurter

rn*y be rtlårìuálly lunccl hy turniúg

thr

'furlirrg

(irntrol

tr'¡ th* desired station. 1'hc l)þitat

Freqrrency

Di:play

give*

the sxa¡rl. firquency

in nregrhertz

(LlHz).

The Ånalog llial

Pointer ìndicstcs rel¡tivc

pnsitiun

on

ü

convåntional FM rlial scnle,

when

atlemptirrg to bcate a

particular

stâtion, Õrrcr:

yorr

have

tuned Lo

tlre

desired sl¿tiou,

thç¡e

is

no

nced

fo

'firrc

tunc' :¡s thc MtCR{)/ç"It

l0ü's

compr¡t*r

will

'lr¡ck

in'nn the tlesirett s{ation.

STATII'N

CÂ.LL

I-ETTER

PT(0üR.ÀtitMfN*:

To

progrä¡It

the

e¿ll l*tlsr* ln¡ a

parlicular

$tilti(r$,

*trrtutlly lunô trl

thilt

sl.al"iou.

T*

i:ritiate tl¡c

progrâ¡¡tÌfli¡rg

${t{{.encè!

lrtuch the,{tplia rwitch

I$sated

ón lhr

front

p",rnel"

tly

turning the

"l"unirrg

Cuntrol slightiy.

tfic lettcr

"¿1,"

rvill

âppeñr

in

the first

ptsilion

nf the

Alpha Numeric tlirplay,

Rctate

the

'l'uning

C¡r¡rtrol

until

the

desired

û.häracter tppenrr

in

lhe Alpha Nunreri: llis¡rla¡r.

Tor¡ch

the

$tr:rc

switsh

f.o re

l¿jn lhe rdrarac{¡r.

'l'he

letter

"4"

wili

uppear

in

each

silçcessivq

pç$iri*n

t¡f' thê

.Àlph* Irluru*ric

llispluy, whcn

thc prcvious

charfictðr iç ¡torcrl. Ror¡te

the

îuning Cnnirol ¿s de**ribed above I'or sach

posilion $f

the

Alphâ Nr.¡¡¡rcric fli*plry.

.4,1't*r

str:ring

rhe fnrrrll¡

chôrauler,

Lhs r:*nrputer aulomatically

switches

your

MICnOICPti 100 to its

n*rnral

operating mr:de.

HûTI:

Whcn

first

aperrting

yt¡ur

MIfRO/CPU

lilll, nrakc sure

lhilt all thc

flip

srvitches

lre in

the

'up'

(normal)

pr:sition.

Thcsc switcheri

¿rc

Lrcaled

behind

the

door on

,ttle

f'rnnt

pancl,

ftr

open

lhe

duor.

press

inrva¡ql

al ilre bçtturn edge

. The ldddon

l¿tch uill

relc¿*c ar¡d the daor rvill np*rl.

To

engäge

the

l¿tch"

sinrply

closc rhe

dc¡or.

Also"

û¡âkc sLlre f hat The

Fre<¡uclruy switch,

Itcared

o$

ths

back

panel.

ir in th*

correst

p(¡sil¡ùn.

For

use

hr lhe

tJ.$i., the *witch m¡rs[ be

in the tjdd

pr:rit.ion

rincc

ull U.S.

fM stari¡:nÍ ars

asrigned

odd

numbered liequencies

by

thc

Federal

Ccrnrnüniùatio

ns

C

ummissinn-

ln o f her r:ouu lries,

chcck

with

your

lcrcal bro¿clcr¡sl^ers ro derernline

if

they are

bro*dcasting trn tdd

clr

evrn

numhe

red

frequcncies.

-8-

Oncê

the

$a¡l

lelters åre

progrÍlmmrd

to a

parricular

frequency" whsnever

you

tune ta th¡t frequency,

lhe

asso*iated

catl

letters will äppear in

the

ÅJpha

Numcris lli*play-

lf

yr:u rryish

to

chatge

the call

letters, use the previously

outlined

prccerlure.

If the

Alpha switch

iu ünintentionally

louched

fin:tia!irtg

the

pragranrrning

sequence),

the

pro-

gramming

sequenct may be ca¡.¡celled by

touchirrg the

Alplra switch again-

NOTE: The Alpha Ntrmeric Display

uf

your

MICROICPU

lü0

can

be

programrned

rvilh

any

four charactêr

co:¡rbìnrtion

öf letters, numbers,

and

purctuatian

f'ound

on a stantlard typewriier

keyboard,

Iiince

,s¡nre

stations have

less

than

f'uur

*all

le

tters, a

blank,

or $p:rffi, is also

pruvided.

Dcr

nol

progran

dl

positiorrs

af the

Àlplra Nurneric

Ði*play

rvith blanlcs.

Doíng

sr: will tessen the

¡lurnbcr

of

üell letters

sêts thst

çâ¡r

be

programmed

into the

conìpnter',s

nrç¡ntry.

A

*r¿xi¡nr¡m of 48 sets

r¡f

call l*tter* c¿n be

programmed

inlo the

r;ofnputer's

merntrlr,

[f

you

åttempt

to

progrem

in rncre

than 4tl sets. thû word

*FULL"'

will

appear in the

Alpha

Nume¡ic

Display

far app¡oxinrately

two

s€cÕnds.

Addition*l

rels

ff¿y

bt

programmerl

in, i.f unwanted

sets arc

first

rle letrd.

Call lettcr scts måy be dclcted by

tuning to

flre

starit¡n whose

call

letters yru wish to

delete,

touching

the

Alpha

switeh, and

then tuuching

the Merrurry

'?"

switclï,

MEMOR.Y

SWITCII

PRüüRÀMMING:

Four cf

your

fsyorite stations

n¿y

be instantly

tuned

by

tcuching

the f¡ont

panel

Memr:ry switches"

To store s siatiûn

location in

a

plrticular

Memory,

tune

to the

desired

station, touch

the Store switcll,

arrd

then

tüuch the

desired

Memory rwitch

("4,"

"8,"

"C,"

or

"¡)'?¡.

The

*tation

cân

nÐlv be

ilstantly

tuned by totclring

the

associated ltfernor'y

switch.

The

unique Mernory

þlatch

feature nf

your

MTCRO/CFLI

I Cl0

wíll

light

the

associated Menrory

switch ench

tirne rlþt

stariôn i$

lruted.

Thh

alerts

you

tû thu fact

that tlrc

tunetl

stíttifin is slnred in a

parficular

tr'femory. Stntions in

the Memory

nray be

r:hnnged

b¡, rrsing

thc previously

mtlinsd

procedtrre.

AUTÛ SCÂN: Touch

switches

allow

you

tc

sr:an up

ur dnwr

{to

the

right or to the

left

of) rhe

errtire

FM

band.

lVhen activated, the coruputer

prnceeds

in

the

direction

you

choose; ts thtl

ne¡(t broâdcâtting

statit¡n" I{' use¿l

in conjunclion

with

the

Stereo

Onl,v

switch,

the

computer

will

select only those

st¿tions

broadcasting in ¡tereo.

If

na statiolr$ are

detected,

your

h{lCRCI/CPU 100 scans

tl¡e

entire

FM

band

nnce

¿nd

icrminates al

the

origind

fiequency.

SHERVT'OüU

@

HF:000

Coníral

Arnplifir:r

*-Õ_

MICRO/CPU

l0O FM T$ner

'...-

¡ÎELECTIVITY

SIVITCH:

Your

l\.ilCRCI/üplt

t0û

rmploys trvo

distjnci

ll- syslcnrs. lVlren

neighboLirrg

stttinnr

oiì thc

l'M band

ínterlbre

with the reccpliorr

r¡f a rtesirecl srã1i(xr.

tl¡e

Nnr¡a¿l

lF systcm, whiuh

pnrvides

stt¡retli sblsstiyify,

should t¡s med,

-fhe

lllide

IF,systenr providcs

exceplional

srÊrer) sepâråti$n

ând

lnw

distarliorr.

The

TVide

lF

syrrre¡n shorrld

bç uted

wlæncvcr

ncighburing

sfat¡ons

dc¡

nr¡t interlcre

with

lhc rereption uf the

desìred llation,

The Nurmal or lVide

[F systeru

is sclccled by the

front panel

Selectivity switch.

lvftlïlFlC:

'["h*

rlcctrunic nruling circuì! will renrnye

noise nr¡rmally

lreard helween stâtion$ nf highly

sensitivc

þ'hl turrers-

The

Sluring

l,el'el

Control

slroukl

bc udjusterl

t* rlre

point

al which

lhr¡

ínte¡ffarion

noise is

eliminated-

tf

thc

Muti¡rg Level

currtrol is

ad,iusted f'nr

higher

$gnal

levsl

mrting

(rnore

clockwise¡, thc

$:und

of extremely

distant. wcak

sl¿tions may alsü

be atte¡ruated

*long with the

inteislaliun noise,

Thereforc, when rlesiring

to

fune

in

a knorvn

rueak

station,

adjust the

cr:ntrol

rnon:

cc¡u¡rÍerclockwjæ

to reduoe. the

signal lcvcl mu{ing

(hrcshald,

or defe¡t the rnuting

circuit tetåtly

using

the Muting srvitch.

AUTO STT

Rgû FTLTER:

The Auto Stere¡¡,frilter

isa

nrliss cancelling

circuil

thät

äutomatically

¡ç¿ur*t

background

noise rvÌthout

affecting

frcquency

rc$¡)olrsç

il¡

prupnrtir:rtr

to the

strength sf

thø

inclrning

sign*I.

Since the Ar¡to

Stereo Filtw

is

inoperatir.e whcnever

a sþnal is strong

enough ro

be

lre¿rd in

fi¡ll stcrco

rvíthuui.

noi¡e,

Sherwtxld

srrggests

that

it be lcft on.

Tre

Auro Stereo

Filter

may

be

delèated

hy

depressing

th¿

lrr:r¡lt punr:l

Auto Slcrçrl Fiìter swit,ch

to

thc

*'OLIT"

posifior:r.

IV{ODD lílVlllCll: Wheit

ihe Mnde switclt iidepretsed

(o

tlre

Mono

position,

the nrultiplcx cirsuifry

.is

bypassed cnd ¡¡ll

bfl:sduasts

will l¡e

lrcard mnr*-

phuninatly.

Á,UI'OMA'IIC

STËK¡:OIMON0

SIVTTCHING: The

MICR{}/üPU

lOÚ incorporatçs

a uniquc

rroise.lhres-

l¡old:gxted autcmatic slrrreclmo¡rrr swilching circuit.

Whe¡l the Mode switch on the fronl

parrel

ís ret tro lhc

S¡ereo

pr:sitiuü,

¿ntl

th¿ FM

program

selected is trcíng

broadc¿st irl ntono,

thls

¡utr¡matic eircuit

swilches

the tuner irrto a

mono m$de"

Stereo

trannmission í¡

indjcated

by

ttre

F[{ Ste

reo

Indicatar Light

k:catrd in

the tuning $cãle írreâ, ¿nd the tunçr

will autonratically

switch

lü sterðo

or

rnono depending

on

the

signal

rtceived-

Flvf DEEh'IPHASIS: Tlre MICROICPU

lû0

tuner

forcignJ.

*

The word

'0¡lby'

¡r

ð

trådÈmark

of Þolby Lábotâtoi¡€r, lnc.

*10*

AddítíanaÍ

Features

ÅC CTHVENIENCI ÛTJTLET:

The MICRûICPU

lûO tuncr offers

¿n ,{C outlet on

thc

back

panel.

Do

f¡ot

çsn¡reçt âny çtmponðnt

ür applianCe

tbat

exceedc thê

ïvattage

rating

specified

for tlte outlët;

to

do,ro

mighf

damry*

thc tr¡nçr

and iç s

firs

hazard

ao

wçll.

FREQUENCY $WITCII: A,ll FM ståtionr

in

lhe

U.S.

are

assigncd

odd

numbered

frequencies

by

the

Federsl Communic¿tio¡¡s Comn¡issio¡r. The

Fre;

qr¡e,ìçy

switch on

your

MICRO/CPU lû0 rnust

be in

fhs ndd

position

for reception of U.S-

FM

stations- ln

other

countrles,

check

wíth

your

local

broadcaster*

til

dctermine if

thçy

*rç brcadqarting

on Õdd

ar

even

¡tumbqred frequencies and

switch tlre Frequency

switeh

lo the

appropriute

position.

FUSR: Thc íntcrnal circuitry

of

your

MICROiCPU

l(P

¡s

prote$ed

fro¡n

excessivc

péwer

by

nr AC linc

fuce.

This fuse

is

r

ld

*mp sls-bls type

{/+

amp elo-blo

for

?0ü-?60

voltr). If the fuse

rhould blow

(open),

replace

it

rvith

tht sarrre

type

fuse or

coütâct

Sherwood's

Service Deparlment. Do not replace with

a higher value tïse; to dtl so is a fire hazard and

inyqlidatçu

yûur

rr$rrantlr,

VÕrTAtE ÀDIU$TMENT:

Ycur

MICROICPU 1CI0

tuner is adjustrd

to nperatc

ât tltÈ

corrcct

Sower

suppllt

vsltägç

of

your

erea

príor

to shipment from

Sherwaod, If

you

move after pur*haaing

Ít

or

send Ít

a* *

gift

to

a t?icnd

livrng in rn årêû where the voltage

is different, it

may be necessrry to

adjust

the

Voltage

Nwitch.

To adjust

the Voltage

switch reflìovë the

walnut

end

prnels

rnd ¡netål coyer of

your

MICBO/trU

100.

Move

the Voltage

switch

to

thc

corrsst

positiun

{

l!CI

valts

cr

240 volts).

in the 120

volt

pasiti*n,

your

tunar will

lunction properly

wifh

a

pûrvsr

supply

voltage

of

90 to 135 valts,

In the 24û volt

position,

ycur

tuner

iryill function

properly

wÍth

a

power

supply vol[uge of ?00 to

260 volts.

NtRMAt FM

DBEMPHÄ.SIS

SiTITCII; Use

this

switch inside tlæ tuncr

only íf

you

fiove

tÕ ân

area

whe¡e thc star¡dar¡l

FM deemphasis

characte¡istic is

different. lt is adjusted to

ths

çorrect

dermphasi*

af

yûur

ãÌ6â at

Shenn¡ood

prior to

shi¡rmcnt, so

therc

is

normally no need fr: touch it.

Thc correct norm¡l

deemphasis is 75¡rsec.

for the U,S.

snd

S0gsec. for

Eur*pe and Japan.

qÊ*

*{p

*rHE*

[¡IICRO/CPU lff

#

^*ffiI$_lili?+Tfi,o

+

IN

THE UNITED

STATES

OF AMERICA

ss

*5k

ú,

#

Eþ

t,

*lt*

FrltlSE

LnCKfn

LnüP ûIGiTAL

FREQ¡jf.NIy

STNTHËSIZts

I

F

.ll- TP:l

T

f

r

I

ûH

lu*r,

nro

TNP[JT

?

5/'1ou

0H

If.lÞlÉils ITr

IlUIfJLÏ

,q¡JAL¡ß

T

i]

i

il;5FLÀY

Cl

sTIRr0

I

llt Ic¡,r0fi

L,iIMF

MrcRolcpu r0r

þlocK

DrÂ(

EL

Àf,i

5h

4

I

5I6NAL

NGTH

¡4ULT 1PÀTI.I

¡i{ETT R

*3

I

RYS I ¡iL

Ct]NTRTLLÊO

t5[

I LLÂ Ifiå

i

üfJ

f{Hu

HAîE

.ERATNN

ArrlÍ:

å[t

C

Ir-f,îtrllJ

t1^tfl]¡{

TUNã¡

F80fit

il\Jl1

rJ{

VilO

6

Vrq

5TLÉ[T J\I ITì'

t{ûÉt1/t4¡Ì nr

5h'I

TCI1

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F

Tfi]P

I''IUT

l.riirt

[ 111.: U

tT nr

L¡IûJTAL

rtu

t1t:

ILIT

üF,

N fl¡ì¡4AL

ïË ËTnlF

:1 ¡r

I T:RE T

f.lll*T

ïFr-E

X

lEf 08:

ñ

b T

¡--

!,1

t :,/ï.lfii

0

åìr I

îcrl

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5'{¿r l

I

Lll

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l:ì

I

NAL

r

5

e

h';rlr

r14 I

lH

TNY

5TIftIl

1¡JU I f

lrTnR

rliltulrnY

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LTEñ

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V

L.L

I tf!TntL

t:1ñ[ilf

r

c r

!ì[u

TRT

.üilLr

IFA

rlL

Tilì

t¡:---'.-'.-'-

I

låu"r'o

]

*12*

Ifi

L

F

0I

t¡îí ü

Y

C]Èf,U

IT

rltitì

MUT

II\Jü

I EV:I"

g

rl

¡t,

{

VÂIII.AFt{

ntll Fil

f

L.LUsl

FIXL)

ÁrinJ

c

üUTPUì

ALPhå

5Tnìt

A

F

t

J

TR

}TJ

TOO

TüNER

, DIÄTRÀM

5CÂN

LEFT

5lENEU

TNLY

StAh Ri.;irT

fcil

5 Til{Lt}

f,Hü55

cüuPL 1tuü

n1Ði-liTl

I

tìAtL LETT*R

¡I3:PL,qï

C IRC.UIT

FR[qlJtf'JËY

UlsPLAY

ClRIUTT

REAN

Ël;Lf

MtHilHY

ll

1[ nuFR

r]c [ 5 5nB

F¡1Nüul'4

ACCE55

fTMORY

t*ANilrtL

l{ANUAL

TUN,il)¡6.

CTßCUIT

-13-

.$pecffca,ffons;*

FM

TUITER:

SELECTABLE

TUN'NG

HANGË:

Odd: 87.5.108.5 tvlH¡

(Dornesticl

Evsn:

S7,6.

lO8.û

fi¡tH¿

{Europeanl

TUNING

ËBROH:

Less

rhan .QtZ,4Yo

"fUNlNG

TYPE:

Phase lockÊd

loop Írequency

synrhe$r

micro computer

locked

runing.

TUN¡Ii¡G

MODË$:

Autû-$çân

Lett

Auta-$can

Bight

Åuto'Sc¡n

Stereo

tnly

4-Starion

Memory

{Auto.Scan

and

Memory

control¡

are

touçh

activated.l

ßEADQUTST

LEÞ Analog

DialPoinler

LËt

4€har*cter

FrequÞnry

Display

LE0

4-Ëhsracter

Àlpha Nurneric

Station ldentificatisn

Oisplay

SIGNAL

INDIÊATOHS:

$ignal Strength

meter

Multipath

ristsr

ANTENNÂ INPUTS:

3{10

ohm

balanced

75

ohm

unbalanced

rF

NCIRMAL

rF wrDE

IHF

$El.¡SlTlVlTY:

Ð.â4dÊf

9.84dBf

{l.7frV}

1.7¡rV}

50dg

åut.ETt$G

SE¡ISíTIVTTY

I

t.7d&t

{ã.tpV}

gf€REt

sr¡¡stTtvtTY

{50dB

S/fi|}:

*

?ã¡rV

TOTAL

HARMÛNIC

TISTCIRTION

{THDI:

Mona:

ôtffitlr:

0,i%

@10ülHz:

0.1%

@6000H2:

.15%

Sterec:

@l00l.I¡:

0.¿96

@lO@Hz:

t.2%

@60Û0Hr:

.260Á

SIGNAL

TO

NOISË RATIO:

Monc;

75dÊ

$tereo:

TtdB

CAPTUfiñ

ftATIO;

l.tdB

ALTËRNATË.cHANNEL

SELECTIVITY

{IHF}

SOdÊ

STEREO

SËPAfiATION:

@

lû0lt¿:

40dB

@

l00OH¿:

45dB

e

!0KHz:

35dB

@30-l5KHz:

30dB

SpUfi lSUg

RËSFONSE

R

g.tËcïlüßl:

130d8

*All

specilicatíorc

wîth

î20

VA,C lìne;

Weaification$

arú desígn

subiect to

patsihte

madlfÍcatïon

wÍtheut notice.

13.#Bf

3û#Vl

30¡tV

.Û?%

,079t

û.r96

.15%

.r5}ú

"

159(t

75d8

7zdB

o.6dB

rsdE

45dB

60dB

40d8

35dB

*t4-

Specífíeatrons

{cs

ntín'uedl

TUt\lER

{c$ntinuedll

Iå{AGË

AE",ECII0N;

f SSdü

lF

REJECTI0N:

Gre¿ter than 120d8

MUTl'NG

Tl.tÊÊSt-rðLD:

Front

panel

adjustable

3-1000¡JV

STERECI

THRESHOLD:

4gV

NOISE

FILTE H

OPÉRATING

THRÊSHOLD; 25¡rV

FBEüUENCY

BESPONSË STEREO

AND

MONO:

20-1

5O00Hz

i.

0,5d8

19KHz

FEJEÇTION;

Greater

than 8ftlB

38KH¿ REJECTION,: Greater

than, 8üdB

üUîFIJT

VOLÍAû€

lA$D

IMPEDANCE) @100Y¡

MOOULATION STËff8Õ AND MONO:

Fixedr

lV

{?2CI0

nhms)

Variable:- 0"1.5V

{600

ohms)

G.ENERAL:

$E[,flCONDUCTOfrS;

76 lts

t8-bit

CMOS

microprocesror. 768x8 bit

Read

Only

Memorv

{fiOfrXl,

256x8

landom Access

Memory

{RAM},and

l

ASËll

ch¿ractergeneratorl;4Str¡nsistors;3J"FETs;3MOS-FETs;31

LEÐs;4LEDalphanumeric

displays; 4 LED

numeric displays;

6

varacror

diodes;3'l

signal diodeti

7

pr:wer

d¡ÕdËs;2 solid stúte

¡nfra-red

¡ntêrruplort.

POWER

REOUIREMENTS:

Dome¡tic: 120VAt.

5û16û Hz

Export: 240VAC,

50/60

Hz

F

ÛWER

FUSËr

Dornestic:

lÁA,3AG

{Slo-Bto

type}

Export:

Y¿A.3AG

(Slo-Blo

typel

RATED POTIì/EH TÛNSUMPTION

(DTMESTIC

AND EXPORTI:

SO

watts

AC

OUTLET:

500

watts unswitched

SHlPFll\lû

WÊIGHT: l?,$ ksl39f* lbs,

TUNEB

OIMË.NSIONS:

508{W}, 16?(H},

379{Þ} mm

2O{W}, 6_3/8{r{},

14-1,511 6(D}

ínches

TUNËR

WËlGt{T:

'15.4

kg¡:34lbs.

FU RNISH

EÞ

ASCES$ORIE$.:

? ShieldeiJ Audio Cabies

1

ËlVl Dipole Antenna

1 ln:tallalion

and

Operation

Manual

-15-

r

I

Typícal

Perfa rma

nE&

türruss

-

TUN¡EN

Fli SlGNÂr/HÖlSË

nÁl|Ç

Ys

Åt{TE$r{À tF¡Êut

TTTÀI

'{ÅXJIIONIC

TISTONTK}H.

VS

AHTÊÑNÁ

INPUT

árrüto

ô.ulPU¡

,l

il

I

ti

l

t:

cÁßRrÃt

FlfâiJtNcY 9ûårt

¡

r.toDuiÂt{oN r¡(eouÊNçv

lçat¡z

üoûl.,lÂnoÞ{

ttvfr. ,ùÕhÕ

iot}

M.OfrlJl,ÀIlOr.¿

revË1,

$fËRtO

ftr

r(QÞUtÁflON leu¡t, Fil"OI

li:}

¿N

f f

NN^ lr,rÊÉÞÀNc{.

3ÇO 01,.¡

illllrlllllltlllll

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il \

il

I

il

I

1 il I

il

I

il

I

t1

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r¡ rr db, t!

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l"rÇtúlArirlN

t.!vf t,

¡..1ü!{o

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TUNER

{GTNTINUEÞ}

FÂI

FREQU€NCY

RESPONSE

&

SEPÀRAÎION

VS FNEQUENCY

Ar.rtiil¡lA

rNPrif

v5

Àr€f tt

r.)t¡tf cltoN

I

r/û1

CÅRf;lñÍ

F*EGUENCY 18t1Hr

MOFULAItoN.

ttvrtt 5T€8Fs

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Froþlems

Although

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lltere

are a

variety

of

cûmrnon

problcrnu

whieh

may

occur. Il' olter ccnnçction

ta

your

sysiem the tu¡re¡:

does not

seem

tü be wrlrking

pnrperly, go

irack and

rererd rhis

manual

tr¡ make

surô

y('u

have accurately

cet all controls.

P

No

output

fram

eilher

channel

{no

tront

panel

LË

Ds

are

il lurn inatecl

l.

eithèr front

panel

LEDs ¡re

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frçm one channel only.

xtrsme ufn,

frcrsg

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¡Ìugus

cr nols€

z.zzz2z,

nüF9

parti

run close to the

hause).

RECHECK

ALL CONNIfITONS: Alsù check

fhe

o{rer

cû¡tlp(rnçuts irr

your

syst€m for

prop€r

operttiûn

according to thei¡ ínstructkrrr

nrarruals.

FRÛBABLE

TAUSË:

AC

power

cord accidentalty clisconnected

or

nÕ

pówer

at

AC

wall

outlet;

n nl,

Sekclor tch i

p*sitioned

on

arnplifier;

Powe

r

Amp/Preamp

Modc svuitch on the

¿mplílier

in the wrong

p*silion;

A Tape Mqnitor or,4"Ch¡nnel

Adaptor

rwitch

rri the

amplifier

may be

accidentally

depressed;

Tuncr ûutput

cal¡les incorrect¡y coñnectûd to the

Balarrce contrçl ûn

the amp

accidentally

moved

to an

èxtrsme

Lef(

ar

Right

position;

lnput

properly

connected

to

one

channel

{psssibly

a

shortecl

or

çpèn cobte} ttetween

the

ln çonre ca$es. reuer$ing

the At

plug

on The line

cord

will

eliminate

a hum

problem.

Check

fÐr

losse ccn"

nectionr.

ßereäd

lhis

manual to ver¡fy

all

hookup

have

d tng

used in the vicinity cf the'tuner.

ln many

c¿se¡

ix

isdilficult

to remove

the

source ol noi*e;

however,

increasìnE the input

signal by

usirç

an

input

rignal;

using an olrtdçor

ãntenrìå

may

reduce

or

sliminale

thi* type of

prablem

-r9*

Jlíatøfi

dLßtr{t$}c,

{,fiE

FnnNr,rÁ},¡IHi _¡Þ

Aûey'úTc

.dêôilíftS

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¡radenna¡k

fiébgrätöries,

l'nco

*,

i

r

M,TGR0/.OFU

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MeHbrY

M*tthl'''äfs

t'¡damarli*rtif

Þråcþ

Lãhotåtüiiegi'i:nr*"

USA¡

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Sherwood MICRO/CPU 100 Istruzioni per l'uso

Sherwood MICRO/CPU 100 Istruzioni per l'uso

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