AMC T-7-A Owners manual

AMC

T7a

STEREOTUNER

TM

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INSTRUCTIONSFORINSTALLATIONANDOPERATION

RISKOFELECTRICSHOCK

DONOTOPEN

RISQUEDECHOCELECTRIQUE

NOUVRIRPAS

RIESGODEELECTROCHOQUE

NOABRIRLATAPA

CAUTION:TOREDUCE

THERISKOFELECTRIC

SHOCK,DONOTREMOVE

COVER(ORBACK).

NOUSER-SERVICEABLE

PARTSINSIDE.REFER

SERVICINGTOQUALIFIED

WARNING:

TOPREVENTFIREORELECTRICSHOCK,DONOTEXPOSETHISAPPLIANCETORAINOR

AFINDEVITERUN

CHOCELECTRIQUE

ETLESCONSEQUENCES

GRAVESQUIPOURRAIENT

ENRESULTER,TENTEZ

PASD'OUVRIRL'APPAREIL

ETDETOUCHERAUX

COMPOSANTSINTERNES

SANSLAPRESENCED'UNE

PARAREDUCIRELRIESGO

DESACUDIDASELECTRICAS,

NODEBERAQUITARSELA

TAPA(NIPARTEPOSTERIOR).

CONSULTESEALPERSONAL

CAPACITADOPARALAS

MOISTURE.

ADVERTENICIA:

CAUTION:

PARAEVITARELRIESGODEINCENDIOOSACUDIDAELECTRICA,NODEBERA

TOPREVENTELECTRICSHOCKDONOTUSETHIS(POLARISED)PLUGWITHAN
EXTENSIONCORD,RECEPTACLEOROTHEROUTLETUNLESSTHEBLADESCANBEFULLYINSERTED
TOPREVENTBLADEEXPOSURE.

ATTENTION:

POURPREVENIRLESCHOCSELECTRIQUESNEPASUTILISERCETTEFICHEPOLARISEE
AVECUNPROLONGATEUR.UNEPRISEDECOURANTOUUNEAUTRESORTIEDECOURANT,SAUF
SILESLAMESPEUVENTETREINSEREESAFONDSANSENLAISSERAUCuNEPARTIEFONDSANSEN
LAISSERAUCUNEPARTIEADECOUVERT.

PRECAUCION:

PARAEVITARSACUDIDASELECTRICAS,NODEBERAUTILIZARSEESTACLAVIJA
POLARIZADACONUNCORDONDEPROLONGACION,RECEPTACULOUOTROTIPODESALIDAA
MENOSQUESEHAYANINSERTASOCOMPLETAMENTELASLENGETASPARAEVITARSUš

NOTE:

SomeAMCproductsareequippedwithdualormulti-voltagetransformers(whichisindicatedonthe
backpanel).Ifyouwishtochangethevoltage,pleasebringyourunittoanauthorisedAMCservicetechnician
forinternalconversion.

ATTENTION:

QuelquespicesAMCsontmuniesdetransformateursdoubleoumulti-voltage(indiquau
panneauarrire).Sivousvoulezchangerlevoltage,veuillezapportervotreappareilaufournisseurdeAMC
pourletransformer.

ZURBEACHTUNG:

EinigeAMCGertesindmitUmschalternfrunterschiedlicheNetzspannungern

ausgerstet(EinVermerkaufderRckseiteweistdaraufhin).
DieAnpassung,wennnotwendig,muvoneinemqualifizierenTechnikerineinerAMCServicestation

vorgenommenwerden.

NOTA:

CiertoscomponentesdeAMCestndotadosdetransformadoresdedobletensinodevarias

tensiones(Ioqueseindicaenelpanelposterior).Sisedeseacambiarlatensin,srvansellevarelaparatoa

NOTETOCATVsystemsinstaller:

ThisreminderisprovidedtocalltheCATVsysteminstaller'sattentionto
Article820-22oftheNECthatprovidesguidelinesforpropergroundingand,inparticular,specifiesthatthecable
groundshallbeconnectedtothegroundingsystemofthebuilding,asclosetothepointofcableentryaspractical.

NOTAPARAELINSTALADORDEANTENASDETELEVISIONCOLECTIVAS:

Lapresenteadvertenciase
proveeparallamarlaatencindelinstaladoralArtculo820-22deNEC(CrdigoElctricoNacional)dondese
facilitanlasdirectricesparalapertinentepuestaatierrayqueespecificaenparticularqueelcondutoratierradel
cabledebeconnectarsealsistemadeconexinatierradeledificio,lomsproximoposiblealpuntodeentrada

Thelightningflashwitharrowhead,withinanequilateral

triangle,isintendedtoalerttheuserofthepresence

ofuninsulated"dangerousvoltage"withinthe

product'senclosure;thatmaybeofsufficient

magnitudetoconstituteariskofelectricshock

topersons.

Theexclamationpointwithinanequilateraltriangleis

intendedtoalerttheuserofthepresenceof

importantoperatingandmaintenance(servicing)

instructionsintheliteratureaccompanyingthe

appliance.

APPLICATIONANDFEATURELIST

FeaturesoftheAMCmodelT7a

*TheAMCmodelT7awasdesignedtomeetprofessionalqualitystandardsforreceiving

FMorAMprograms.

*Componentsofthehighestgradeareusedthroughoutwithcriticalonesselectedforthe

bestsoundperformance,suchasdouble-sidedandthru-holeplatedPCBforthebest
stabilityfromRFthroughIFtoaudio.

*Itissimpleandeasytouse,andofferasuperbaudiophilequalityperformanceatavery

reasonableprice.

*30stations(FMorAM)canbeenteredinthepresetmode.Theyarestoredinanon

volatilememorywhichallowsthepresetstationstoremaininmemoryformorethantwo
weekseveniftheunitisunpluggedfromthemainssupply.

*Incaseofweakstationswherethebackgroundnoisebecomesannoyingandspoilsthe

listener'senjoymentoftheprogram,thereprovidesaMONObuttononT7atolockthe
tunerinthemonomodetoobtainconsistentlyquieterandcleanersound.

*Itssimplecircuittopologygivestheunitnoisefreeandlowdistortionperformance.
*Providestwooptionstoupgradetheunit:

(1)RDSmodule:TooffertheconvenienceandbenefitsofRDS(RadioDataSystem)but

withoutsuperfluousandconfusingbuttons.

(2)Digitaloutputmodule:Tohavedigitaloutputfromtunerinordertobeabletomake

digitalrecordingthroughAMCADCwithdigitalpre-ampstructure.

2

REARPANELCONNECTIONS/FRONTPANELCONTROLS

REARPANEL

3

1.ACLINECORD

2.FMANTENNATERMINAL

3.AMANTENNATERMINAL

FRONTPANEL

101198

4 1

52

4.OUTPUTJACKS

5.DIGITALOUTPUT"(OPTION)"

1

2

1.POWERSWITCHANDPOWER
INDICATOR

2.STATIONPRESET

3.MEMORY

4.AM/FM

5.MONO

3 4 5 6 7

6.AUTO

7.TUNING

8.TEXT

9.TIME

10.PROGRAM

11.TYPE

3

REARPANELCONNECTIONS

1.ACLINECORD

PlugtheAClinecordintoanearbywall
outletthatprovidesthecorrectACpower
linevoltage,orintoanunswitched
convenienceoutletonanyAMCproduct.

2.FMANTENNATERMINAL

Anantennamustbeconnectedtothetuner
foreffectivereceiptofstereoFM
broadcasts.Aribbon-wire"foldeddipole"
antennaisincludedtogetyoustarted.
Whenyoustretchouttheribbon-wire
antennayouwillnotethatitistheformofa
T.The"crossbar"portionoftheTshould
bestretchedouthorizontallyandtackedin
placeonawall,onthebackofacabinet,or
onthefloor.The"vertical"sectionoftheT
goestothe75ohmFMantennaterminal
through300ohmto75ohmmatching
transformerincludedinaccessory
package.
Inviewoftheexceptionalsensitivityof
AMCtunercircuits,youmayfindthe
ribbon-wiredipoleantennaisallyouneed
forreceiptofstronglocalstations.Butitis
notveryefficientatrejecting"multipath"
andotherformsofFMinterference,andit
cannotbeeasilyrotatedtooptimizeits
pickuppatternforbestreceptionofstations
indifferentdirections.Therecommended
options,inorderofincreasingcost,areas
follows:
(1)Abasic"rabbit-ears"indoorTVantenna
withoutauxiliarycoilsortuningswitches.
Electrically,suchanantennaisjustanother
dipole(similartotheribbon-wireantenna)
withitstunedelementsmadeofsolid
metal,butwiththeadvantageofbeingable
toberotated.Stretchouteachofitstwo
armstoalengthof30inches(75cm),and
orientthemhorizontallyoratashallow
anglelessthan45degreesupward.The
ribbonwireemergingfromtheantenna's
baseshouldbeconnectedtothetuner's75
ohmFMantennaterminalthrough300ohm
75ohmmatchingtransformerinplaceof
thesuppliedribbon-wireantenna.Now,for
eachstationintune,afteryoutunethe

stationyoucanrotatetheantennaforbest
reception.
(2)Amoreelaboraterabbit-earsindoorTV
antennawithatuningswitch.Thistypeof
antennadoesNOThavegreatersensitivity
thanthesimplerrabbit-earsunit,soifyour
problemisthatthesignalsyouwantto
receiveareweak,thenanoutdoorantenna
istheonlyeffectivesolution.Butincities
andinlargebuildingswheresignalsare
strongbutarecontaminatedbyreflected
"multipath"signalsthatinterferewithgood
reception,thetuningswitchonan
elaborateindoorantennamayimprove
receptionbyreducingtheinterference.
(3)Anelectricallytunedindoorantenna.
Again,suchantennasusuallydonot
provideanyadvantageoverthesimplest
typeof"rabbit-ears"unitforreceivingweak
signals.Butwherestrongsignalsare
contaminatedwithinterference,the
antenna'saimingandtuningcontrolscan
rejecttheinterferenceandyieldcleaner
reception.
(4)Anoutdoorantenna.Eventhefinest
indoorantenna,nomatterhowelaborate,
cannotfullyexploitthecapabilitiesofa
goodFMtuner.Forthelowestnoise,
minimumdistortion,andlargestchoiceof
wellreceivedbroadcasts,anoutdoor
antennaisthebestcomplementtoafine
tuner.Aroofmountedantennahasthree
fundamentaladvantages.First,itslarge
sizeyieldsbettersensitivity(pullingina
strongersignalformthedesiredstation)
andanarrowerdirectionalpatternformore
effectiverejectionofmultipathreflections
arrivingformotherdirections.Second,its
locationonaroofortallmastplacesit
abovemanysourcesofinterferencesuch
aspassingcarsandbuses,otherbuildings,
etc.Third,thestrengthofreceivedFM
signalsisdirectlyproportionaltotheheight
ofanyantennaabovetheground.Ifyou
alreadyhaveanoutdoor television
antenna,usingasplittertoextractFM
signalsfromitmayproduceexcellent
results.However,manyTVantennasare

4

potentialinterferencewithTVsignalsat
nearbyfrequencies(channel6intheU.S.).
Youmaybeabletouseasplittertoextract
FMsignalsfromanapartmentbuilding's
masterTVantennasystem,butusuallythis
yieldspoorresultsbecausemanymaster
antennasystemshave"traps"tostopFM
signals.Thebestchoiceisadirectional
FM-onlyantenna,mountedashighabove
groundasispracticalandseparatedbyat
leasttwometers(7feet)fromother
antennas,verticallyandhorizontally.If
desiredstationsarelocatedindifferent
directions(morethan90degreesapart),
theantennashouldbemountedonarotor
foraiming.Useshieldedleadingcable
ratherthanplain"twinlead"wire,bothto
minimizeinterferenceandtopreserve
strongsignalsduringyearsofweathering.
Thecablemaybeeither75ohmcoaxialor
shielded300ohmtype.Disconnectany
indoorantennabeforeconnectingthe
cableformtheoutdoorantenna.Ifyou
installanoutdoorantennayourself,
observetheseimportantCAUTIONS:
a.Donotmounttheantennacloseto
electricpowerlines.Plantheinstallation
sothattheantennamastcannot
accidentallytouchpowerlines,eitherwhile
youareinstallingitorlater.
b.Includealightningarresterinthe
installation,toprotectbothyourselfandthe
tunercircuitfrompotentialdangerduring
electricalstorms.

effectivenessofalongwireantennawillbe
improvedbyconnectingasecondwire
fromtheGround(G)terminaltoatrue
earthground,i.e.acopperplatedroddriven
severalfeetintoearth.Asubstitute
electricalgroundmayalsoimprove
effectiveness:acoldwaterpipe,aseam
radiator,orthethirdholeofmodern
electricalwallsocket.

4.OUTPUTJACKS

ConnectastereopatchcordfromtheLeft
andRightoutputjackstothe
correspondingTunerinputjacksonyour
amplifier.

5.DIGITALOUTPUTS(OPTION)
ThisisanoptionmodelforT7a

.Ifyour
AMCT7ahasincorporatedwithDigital
OutputModuletheunitwillbeavailable
withdigitaloutputintwotypesofjacks
(RCAJackandToslinkJack).Fordetails
pleasecheckwithAMCdealer/distributor
inyourcountry.

3.AMANTENNATERMINALS

Sincethetunerisequippedwithloop
antenna,noexternalantennawillbe
neededforsatisfactoryreceptionofmost
localbroadcastingstations.Butifyouwish
toimprovereceptionofdistantAMstations,
attachalongwireoutdoorantennatothe
AMterminal.Asitsnameimplies,a
"longwire"antennaisasimple,straight
wirewhoselengthmaybeanythingfroma
fewfeetuptoabout100feet(30meters),
mountedparalleltotheearthand ashigh
asconvenient.Insomecasesthe

5

FRONTPANELCONTROLS

1.POWERSWITCH

TheAMCT7aisturnedonbypressingthe
powerswitch.Thesmallindicatorabovethe
switchwillglowgreen.

2.STATIONPRESETS

Youcanstorethefrequenciesofthirtyfavorite
stations(FMandAM),inthesepresets,using
theMEMORYbutton.Then,totunethose
stationsfromdaytoday,justpressthe
appropriatepresetsbuttons.Thepresets
preservetheirfrequencyassignmentswhen
thepowerisswitchedoff,orwhentheACline
cordisunplugged,foraperiodofatleasttwo
weeks.Thusyoucanrearrangeyourstereo
system,ormovetheequipmentfromroomto
room,withoutlosingthepresetfrequencies.
Butifyouleavethepoweroffforamonthor
more,youmayhavetoreprogramthetuning
presets.

3.MEMORY

ThisbuttonengagestheMemoryentermode.
Usethismodetoenterthefrequenciesofyour
favoritestationsinthethirtypresets(FMand
AM).Theprocedureisasfollows.
(1)Decidewhichstationyouwanttoassignto
eachpreset.
(2)SelecttheFMorAMband,asappropriate.
UsingtheTuningcontrol,manuallytunetothe
firststationonyourlist.Checkthecenter­tuneindicatortobesurethatyouhavetuned
preciselytothecenterofthestation's
broadcastchannel.PresstheMEMORY
button,thenpressPreset#01tostorethefirst
stationinthetuner'smemory.(NOTE:After
youpressMEMORY,youwillhave
approximatelyfivesecondstostoreastation
inoneofthepresets.Afterthatinterval,the
MEMORYmodewillautomatically
deactivate).
(3)Tunetothesecondstationonyourlist.
PresstheMEMORYbuttonand,withinten
seconds,pressPreset#02tostorethe
secondstation.
(4)Tunetothethirdstationonyourlist,press
MEMORYandpressPreset#03tostorethe
station.Continueinthismannerwithany

otherstationsthatyouwanttostoreinthe
remainingpresets.Incidentally,ifyoumakea
mistakeorchangeyourmind,itisnot
necessarytoreprogramallpresetsin
sequence.Youcanreprogramanypreset
simplybytuningtothedesiredfrequency,
pressMEMORY,andpressingthepreset#
thatyouwanttoreprogram.Afteryoufinish
programmingthepresets,youmaywishto
postyourlistofstationsandassociatedpreset
numbersnearbyforreference.CAUTION:in
day-to-dayoperationbecarefulnottopress
theMEMORYbuttonbyaccident.Doingso
willactivatetheMEMORYmode,andifyou
thenpressanyofthepresetbuttonsyouwill
unintentionallyreprogramthatpreset.You
wouldthenhave tomanuallyretunetothe
stationyouwanted,andreprogramitintothe
preset.IfyoupressMEMORYaccidentally,
youmaywaittensecondsfortheMEMORY
modetodisengage.Oryoucanimmediately
forcethetuneroutoftheMEMORYmode,in
eitheroftwoways:switchtotheothertuning
band(e.g.fromFMtoAMandback),ortap
tuningbuttonstochangethetunedfrequency.

4.AM/FM

Thisbuttonswitchesbetweenthetwotuning
bands:FMorAM.Thedigitaltuningdisplay
showsthetunedfrequencyinMHz(forFM)or
KHz(forAM).Thetuningcircuithasa"last
stationselected"memory.Whenyouswitch
betweentuning tobands,thecircuit
automaticallyretunestothelaststationthat
youtunedtowhenyoupreviouslyusedthat
band.

5.MONO

TheMONObuttondisablesthestereoFM
circuitsinthetuner.Normallythetuner
receivesmonophonicFMtransmissionsin
monoandautomaticallyswitchesonits
multiplexdecodingcircuitswhenastereoFM
broadcastisreceived(asshownbythe
STEREOindicator).Butwhenaveryweak
FMstationsignalisreceived,itmaybe
excessivelynoisybecauseofthemultiplex
encodingtechniqueusedforstereo

6

ordertoobtainconsistentlyquieterand
cleanersound.Remembertodisengagethe
MONObuttonwhenyouretunetoastronger
signal.AslongastheMONObuttonis
engaged,nobroadcastscanbereceivedin
stereo.

6.AUTO

WhentheAUTObuttonisengaged,aredLED
onthedisplaywillbelit,otherwisetheunitisin
MANUALmode.InAUTOmode,thetuner
scansisinastation-by-stationmoderather
thaninsmallfrequencyincrements.When
theTuningbuttonsistapped,thetunerscans
rapidlyupordowninfrequencyand
automaticallystopsatthenextstationwhose
signalisstrongenoughforgoodreception.A
mutingcircuitautomaticallysilencesthe
outputduringthescan,tillthetuningcircuits
lockontoastation.TheMANUALtuning
modepartiallyoverridesthescanmuting.In
thismodeallstations(andtheinterstation
noise)remainaudibleatareducedvolume
levelwhilethetuningisbeingscannedupor
downinfrequency.Ifyouwanttosearchfor
veryweaksignals,orifyouneedtofinetune
awayfromthecenterofastation's
broadcastchannelinordertocurean
interferenceproblem,usethemanualtuning
mode.

7.TUNING

TheTUNINGcontrolsaretwobuttonsthat
allowyoutotuneupanddowntheAMofFM
radiospectrum.Presstheright-handbutton
totunetowardhigherfrequenciesorthe
lefthandbuttontotunetowardlower
frequencies.WhentheTUNINGbuttonsare
pressedmomentarily,thetunedfrequency
shiftsupordownbyonestep,unlessthe
AUTOmodehasbeenengaged.(IfAUTOis
engagedthetunerwillscaninastation-by­stationmoderatherthaninsmalltuning
steps.)InNorthAmericathesizeofthe
minimumtuningstepis10KHzontheAM
bandand200KHzontheFMband.InEurope
andelsewherethetuningstepis9KHzonAM
and50KHzonFM.EachtimetheTUNING
buttonsaretapped,thetunedfrequencywill

shiftupordownbythisincrement,asshown
onthedigitalfrequencydisplay.Totunea
broadcastsignal,presscontinuouslyoneither
TUNINGbuttontillthetunedfrequencyis
closetothedesiredbroadcastfrequency.
Thenfinetuneinsmallincrementsbytapping
theTuningbuttons.Ifyouknowtheexact
frequencyofthebroadcaststation,simply
tunetothatfrequency.Ifyoudon'tknowthe
exactfrequency,tunetothevicinityofthe
correctfrequencyandthenobservethe
Tuningindicatorswhilefinetuningtoobtain
maximumsignalstrength.OnFM,finetunetill
thecentertuneindicatorisilluminated.

8.TEXT

WhentheTEXTbuttonispressed,arepeated
textualmessagewillbescrolledthroughthe
display.Iftheselectedstationisnot
transmittingaTEXTmessage,"NOTEXT"
willappearonthedisplay.

9.TIME

WhentheTIMEbuttonispressed,thetimeis
displayed.Thefirsttwocharactersontheleft
handsideofthedisplaywillindicateeitherAM
orPM,followedbythetime.Iftheselected
stationisnottransmittingatimesignal,"NO
CLOCK"willappearonthedisplay.

10.PROGRAM

WhenthePROGRAMbuttonispressed,the
selectedstationnamewillappearonthe
display.Iftheselectedstationisnot
transmittingthestationname,"NONAME"
willappearonthedisplay.

11.TYPE

WhentheTYPEbuttoninpressed,thetypeof
programmaterialtransmittedbytheselected
stationwillbedisplayed,e.g.News,Classic,
Pop,Sportetc.Iftheselectedstationisnot
transmittingTYPEinformation,"NONE"will
appearonthedisplay.

Notes:WhenyourT7aisnotinstalledwith
RDSmodule,youwillnotfindtheseRDS
functionsthataredescribedfromitem(8)to
(11)onyourunit.Fordetailstoupgradeyour

7

REMOTECONTROL

MEMORY

1

4 6

7

AM/FM

AM/FM

PROGRAM

TEXT

3

2

5

8

9

0

SCAN PRESET

TAPE

AMC RC-006

AwirelessremotecontrolisprovidedwithyourT7aenablingyoutooperatefromthecomfort
ofyourchair.Forreliableoperationthereshouldbeaclearline-of-sightpathfromtheremote
controltothefrontofthetuner.

Mostbuttonsontheremotecontrolproducethesameeffectasthecorresponding
buttononthefrontpanelofthetuner.

Tounderstandthesefunctionspleasereferto
relevantsections.However,thehandsetisalsoequippedwithtwofunctions(SCANand
PRESET)thatarenotfoundonfrontpanel.Theoperationsofthesefunctionsaredescribed
asfollows:

SCAN

TheSCANhastwobuttonsthatallowyoutotuneupanddowntheAMofFMradiospectrum.
Pressthe''buttontotunetowardhigherfrequenciesor''buttontotunetowardlower
frequencies.WhentheSCANbuttonsarepressedmomentarily(<0.5second),thetuned
frequencyshiftsupordownbyonestep.WhentheSCANbuttonsarepressedandheld
morethan0.5second,thetunerwillscaninastation-by-stationmoderatherthaninsmall
tuningsteps.

PRESET

Oncethefrequenciesoffavoritestations(upto30ineitherFMorAM)havebeenstoredin
thisunit.ToseehowtosetupmemorystationspleaserefertoMEMORYdescription.
Then,justpressthePRESETbuttonsandthestationsinthememoryoftheunitcanbeeasily

8

SPECIFICATIONS

FMTUNERSECTION

InputSensitivityMONO30dBTHD+N.......................................11.3dBf(1.0uV/75ohm)

MONO50dBS/N................................................15dBf(1.5uV/75ohm)

STEREO50dBS/N.............................................37dBf(20uV/75ohm)

STEREO60dBS/N.............................................47dBf(60uV/75ohm)

CaptureRatio(45and65dBf)...............................................................................<1.5dB

AMRejection(45and65dBf).................................................................................>60dB

SelectivityALTERNATECHANNEL.........................................................................65dB

ImageRejection.......................................................................................................80dB

RFIntermodulation..................................................................................................60dB

IFRejection..............................................................................................................90dB

SubcarrierSuppression(19and38kHz)..................................................................60dB

THDat100%ModulationMONO1kHz..................................................................0.08%

100Hz6kHz....................................................................0.2%

STEREO1

kHz..................................................................0.08%

100Hz6kHz....................................................................0.3%

Signal/NoiseRatioMONO...........................................................................>78dB

(at65dNf,1HFweighted)STEREO.......................................................................>74dB

FrequencyResponse30Hz15kHz................................................................+/0.5dB

StereoSeparation1kHz...............................................................................50dB

30Hz10kHz.......................................................................35dB

OutputLevel.........................................................................................................530mV

AMTUNERSECTION

UseableSensitivity...................................................................................................10uV

Selectivity.................................................................................................................30dB

ImageRejection.......................................................................................................45dB

IFRejection..............................................................................................................35dB

Signal/NoiseRatio(30%modulation,50mVinput)....................................................45

dB

THD..........................................................................................................................0.5%

OutputLevel..........................................................................................................125mV

WeltronicsCorp.reservedtherighttoimproveitsproductsatanytime.Specificationsare

9

22

SAFETYINSTRUCTION

1.READINSTRUCTIONS

Allthesafetyandoperatinginstructionsshouldberead
beforetheapplianceisoperated.

2.RETAININSTRUCTIONS

Thesafetyandoperatinginstructionsshouldberetainedfor
futurereference.

3.HEEDWARNINGS

Allwarningsontheapplianceandintheoperatinginstructions
shouldbeadheredto.

4.FOLLOWINSTRUCTIONS

Alloperatinganduseinstructionsshouldbefollowed.

5.WATERANDMOISTURE

Theapplianceshouldnotbeusednearwater-forexample,
nearabathtub,washbowl,kitchensink,laundrytub,inawet
basement,ornearaswimmingpool,etc.

6.CARTSANDSTANDS

Theapplianceshouldbeusedonlywithacartorstandthatis
recommendedbythemanufacturer.

Anapplianceandcartcombinationshouldbe

6A.

PORTABLECARTWARNING

movedwithcare.Quickstops,excessiveforce,
andunevensurfacesmaycausetheappliance
andcartcombinationtooverturn.

7.WALLORCEILINGMOUNTING

S3125A

Thisequipmentisnotdesignedforusemountedonawallora
ceiling.

8.VENTILATION

Theapplianceshouldbesituatedsothatitslocationorposition
doesnotinterferewithitsproperventilation.Forexample,the
applianceshouldnotbesituatedonabed,sofa,rug,orsimilar
surfacethatmayblocktheventilationopenings,orplacedina
built-ininstallation,suchasbookcase orcabinetthatmay
impedetheflowofairthroughtheventilationopenings.

9.HEAT

Theapplianceshouldbesituatedawayfromheatsources
suchasradiators,heatregisters,stoves,orotherappliances
(includingamplifiers)thatproduceheat.

10.POWERSOURCES

Theapplianceshouldbeconnectedtoapowersupplyonlyof
thetypedescribedintheoperatinginstructionsorasmarked
ontheappliance.

11.POWER-CORDPROTECTION

Power-supplycordsshouldberoutedsothattheyarenotlikely
tobewalkedonorpinchedbyitemsplaceduponoragainst
them,payingparticularattentiontocordsatplugs,
conveniencereceptacles,andthepointwheretheyexitfrom
theappliance

12.CLEANING

Theapplianceshouldbecleanedonlyasrecommendedby
themanufacturer.

13.NONUSEPERIODS

Thepowercordoftheapplianceshouldbeunpluggedfromthe
outletwhenleftunusedforalongperiodoftime.

14.OBJECTANDLIQUIDENTRY

Careshouldbetakensothatobjectsdonotfallandliquidsare
notspilledintotheenclosurethroughopenings.

15.SERVICING

Theusershouldnotattempttoservicetheappliancebeyond
thatdescribedintheoperatinginstructions.Allotherservicing
shouldbereferredtoqualifiedservicepersonnel.

16.DAMAGEREQUIRINGSERVICE

Theapplianceshouldbeservicedbyqualifiedservice
personnelwhen:
a)Thepower-supplycordortheplughasbeendamaged;or
b)Objectshavefallen,orliquidhasbeenspilledintothe

appliance;or
c)Theappliancehasbeenexposedtorain;or
d)Theappliancedoesnotappeartooperatenormallyor

exhibitsamarkedchangeinperformance;or
e)Theappliancehasbeendropped,ortheenclosureis

damaged.

17.POWERLINES

(APPLIESTOTUNERANDRECEIVERSONLY)
Anoutdoorantennashouldbelocatedawayfrompowerlines.

18.OUTDOORANTENNAGROUNDING

(APPLIESTOTUNERANDRECEIVERSONLY)
Ifanoutsideantennaisconnectedtothereceiver,besurethe

antennasystemisgroundedsoastoprovidesomeprotection
againstvoltagesurgesandbuiltupstaticcharges.
Section810oftheNationalElectricalCode,ANSI/NFPANo.
70-1984,providesinformationwithrespecttoproper
groundingofthemastandsupportingstructure,groundingof
thelead-inwiretoanantennadischargeunit,sizeofgrounding
conductors,locationofantenna-dischargeunit,connectionto
groundingelectrodes,andrequirementsforthegrounding
electrode.SeeFigure.
a)UseNo.10AWG(5.3mm)copper,No.8AWG(8.4mm)

aluminum,No.17AWG(1.0mm)copper-cladsteelor

2

bronzewire,orlarger,asagroundwire.
b)Secureantennalead-inandgroundwirestohousewith

stand-offinsulatorsspacedfrom4-6feet(1.22-1.83m)

apart.
c)Mountantennadischargeunitascloseaspossibletowhere

lead-inentershouse.
d)UsejumperwirenotsmallerthanNo.6AWG(13.3mm)

copper,ortheequivalent,whenaseparateantenna-

groundingelectrodeisused.SeeNECSection810-21(j).

AntennaGroundingAccordingto

theNationalElectricalCode

AntennaLead

InWire

Ground
Clamp

Electric
Service
Equipment

NationalElectricalCode
AvailablefromLibrary,book
stores,orNationalFireProtection
Association(BatterymarchPark,
Quincy.MA02269).

GroundClamps

PowerServiceGrounding

ElectrodeSystem
(NECArt250PartH)

Antenna
Discharge
Unit(NEC
Section810.20)

GroundingConductors
(NECSection810.21)

AMC21-3004

2

AMCWeb:http://www.amchome.com

PN:21-4133