AMC T7A User manual

INSTRUCTIONSFORINSTALLATIONANDOPERATION
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AFINDEVITERUN
CHOCELECTRIQUE
ETLESCONSEQUENCES
GRAVESQUIPOURRAIENT
ENRESULTER,TENTEZ
PASD'OUVRIRL'APPAREIL
ETDETOUCHERAUX
COMPOSANTSINTERNES
SANSLAPRESENCED'UNE
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DESACUDIDASELECTRICAS,
NODEBERAQUITARSELA
TAPA(NIPARTEPOSTERIOR).
CONSULTESEALPERSONAL
CAPACITADOPARALAS
WARNING:
ADVERTENICIA:
TOPREVENTFIREORELECTRICSHOCK,DONOTEXPOSETHISAPPLIANCETORAINOR
MOISTURE. PARAEVITARELRIESGODEINCENDIOOSACUDIDAELECTRICA,NODEBERA
CAUTION:
ATTENTION:
PRECAUCION:
TOPREVENTELECTRICSHOCKDONOTUSETHIS(POLARISED)PLUGWITHAN
EXTENSIONCORD,RECEPTACLEOROTHEROUTLETUNLESSTHEBLADESCANBEFULLYINSERTED
TOPREVENTBLADEEXPOSURE.
POURPREVENIRLESCHOCSELECTRIQUESNEPASUTILISERCETTEFICHEPOLARISEE
AVECUNPROLONGATEUR.UNEPRISEDECOURANTOUUNEAUTRESORTIEDECOURANT,SAUF
SILESLAMESPEUVENTETREINSEREESAFONDSANSENLAISSERAUCuNEPARTIEFONDSANSEN
LAISSERAUCUNEPARTIEADECOUVERT.
PARAEVITARSACUDIDASELECTRICAS,NODEBERAUTILIZARSEESTACLAVIJA
POLARIZADACONUNCORDONDEPROLONGACION,RECEPTACULOUOTROTIPODESALIDAA
MENOSQUESEHAYANINSERTASOCOMPLETAMENTELASLENGETASPARAEVITARSUš
NOTE:
ATTENTION:
ZURBEACHTUNG:
NOTA:
SomeAMCproductsareequippedwithdualormulti-voltagetransformers(whichisindicatedonthe
backpanel).Ifyouwishtochangethevoltage,pleasebringyourunittoanauthorisedAMCservicetechnician
forinternalconversion.
QuelquespicesAMCsontmuniesdetransformateursdoubleoumulti-voltage(indiquau
panneauarrire).Sivousvoulezchangerlevoltage,veuillezapportervotreappareilaufournisseurdeAMC
pourletransformer. EinigeAMCGertesindmitUmschalternfrunterschiedlicheNetzspannungern
ausgerstet(EinVermerkaufderRckseiteweistdaraufhin).
DieAnpassung,wennnotwendig,muvoneinemqualifizierenTechnikerineinerAMCServicestation
vorgenommenwerden.
CiertoscomponentesdeAMCestndotadosdetransformadoresdedobletensinodevarias
tensiones(Ioqueseindicaenelpanelposterior).Sisedeseacambiarlatensin,srvansellevarelaparatoa
NOTETOCATVsystemsinstaller:
NOTAPARAELINSTALADORDEANTENASDETELEVISIONCOLECTIVAS:
ThisreminderisprovidedtocalltheCATVsysteminstaller'sattentionto
Article820-22oftheNECthatprovidesguidelinesforpropergroundingand,inparticular,specifiesthatthecable
groundshallbeconnectedtothegroundingsystemofthebuilding,asclosetothepointofcableentryaspractical.
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.
NOUVRIRPAS
RISQUEDECHOCELECTRIQUE

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.
APPLICATIONANDFEATURELIST
2

1.ACLINECORD
2.FMANTENNATERMINAL
3.AMANTENNATERMINAL
4.OUTPUTJACKS
5.DIGITALOUTPUT"(OPTION)"
1.POWERSWITCHANDPOWER
INDICATOR
2.STATIONPRESET
3.MEMORY
4.AM/FM
5.MONO
6.AUTO
7.TUNING
8.TEXT
9.TIME
10.PROGRAM
11.TYPE
3
352 4 1
REARPANELCONNECTIONS/FRONTPANELCONTROLS
REARPANEL
FRONTPANEL
1
101198
23 4 5 6 7

1.ACLINECORD
2.FMANTENNATERMINAL
PlugtheAClinecordintoanearbywall
outletthatprovidesthecorrectACpower
linevoltage,orintoanunswitched
convenienceoutletonanyAMCproduct.
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
REARPANELCONNECTIONS
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.
Sincethetunerisequippedwithloop
antenna,noexternalantennawillbe
neededforsatisfactoryreceptionofmost
localbroadcastingstations.Butifyouwish
toimprovereceptionofdistantAMstations,
attachalongwireoutdoorantennatothe
AMterminal.Asitsnameimplies,a
"longwire"antennaisasimple,straight
wirewhoselengthmaybeanythingfroma
fewfeetuptoabout100feet(30meters),
mountedparalleltotheearthand ashigh
asconvenient.Insomecasesthe
effectivenessofalongwireantennawillbe
improvedbyconnectingasecondwire
fromtheGround(G)terminaltoatrue
earthground,i.e.acopperplatedroddriven
severalfeetintoearth.Asubstitute
electricalgroundmayalsoimprove
effectiveness:acoldwaterpipe,aseam
radiator,orthethirdholeofmodern
electricalwallsocket.
ConnectastereopatchcordfromtheLeft
andRightoutputjackstothe
correspondingTunerinputjacksonyour
amplifier.
.Ifyour
AMCT7ahasincorporatedwithDigital
OutputModuletheunitwillbeavailable
withdigitaloutputintwotypesofjacks
(RCAJackandToslinkJack).Fordetails
pleasecheckwithAMCdealer/distributor
inyourcountry.
3.AMANTENNATERMINALS
4.OUTPUTJACKS
5.DIGITALOUTPUTS(OPTION)
ThisisanoptionmodelforT7a
5

1.POWERSWITCH
2.STATIONPRESETS
3.MEMORY
4.AM/FM
5.MONO
TheAMCT7aisturnedonbypressingthe
powerswitch.Thesmallindicatorabovethe
switchwillglowgreen.
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.
ThisbuttonengagestheMemoryentermode.
Usethismodetoenterthefrequenciesofyour
favoritestationsinthethirtypresets(FMand
AM).Theprocedureisasfollows.
(1)Decidewhichstationyouwanttoassignto
eachpreset.
(2)SelecttheFMorAMband,asappropriate.
UsingtheTuningcontrol,manuallytunetothe
firststationonyourlist.Checkthecenter-
tuneindicatortobesurethatyouhavetuned
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.
Thisbuttonswitchesbetweenthetwotuning
bands:FMorAM.Thedigitaltuningdisplay
showsthetunedfrequencyinMHz(forFM)or
KHz(forAM).Thetuningcircuithasa"last
stationselected"memory.Whenyouswitch
betweentuning tobands,thecircuit
automaticallyretunestothelaststationthat
youtunedtowhenyoupreviouslyusedthat
band.
TheMONObuttondisablesthestereoFM
circuitsinthetuner.Normallythetuner
receivesmonophonicFMtransmissionsin
monoandautomaticallyswitchesonits
multiplexdecodingcircuitswhenastereoFM
broadcastisreceived(asshownbythe
STEREOindicator).Butwhenaveryweak
FMstationsignalisreceived,itmaybe
excessivelynoisybecauseofthemultiplex
encodingtechniqueusedforstereo
6
FRONTPANELCONTROLS

7
ordertoobtainconsistentlyquieterand
cleanersound.Remembertodisengagethe
MONObuttonwhenyouretunetoastronger
signal.AslongastheMONObuttonis
engaged,nobroadcastscanbereceivedin
stereo.
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.
TheTUNINGcontrolsaretwobuttonsthat
allowyoutotuneupanddowntheAMofFM
radiospectrum.Presstheright-handbutton
totunetowardhigherfrequenciesorthe
lefthandbuttontotunetowardlower
frequencies.WhentheTUNINGbuttonsare
pressedmomentarily,thetunedfrequency
shiftsupordownbyonestep,unlessthe
AUTOmodehasbeenengaged.(IfAUTOis
engagedthetunerwillscaninastation-by-
stationmoderatherthaninsmalltuning
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.
WhentheTIMEbuttonispressed,thetimeis
displayed.Thefirsttwocharactersontheleft
handsideofthedisplaywillindicateeitherAM
orPM,followedbythetime.Iftheselected
stationisnottransmittingatimesignal,"NO
CLOCK"willappearonthedisplay.
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
6.AUTO
7.TUNING
9.TIME
11.TYPE
8.TEXT
10.PROGRAM
WhentheTEXTbuttonispressed,arepeated
textualmessagewillbescrolledthroughthe
display.Iftheselectedstationisnot
transmittingaTEXTmessage,"NOTEXT"
willappearonthedisplay.
WhenthePROGRAMbuttonispressed,the
selectedstationnamewillappearonthe
display.Iftheselectedstationisnot
transmittingthestationname,"NONAME"
willappearonthedisplay.

REMOTECONTROL
8
AwirelessremotecontrolisprovidedwithyourT7aenablingyoutooperatefromthecomfort
ofyourchair.Forreliableoperationthereshouldbeaclearline-of-sightpathfromtheremote
controltothefrontofthetuner.
Tounderstandthesefunctionspleasereferto
relevantsections.However,thehandsetisalsoequippedwithtwofunctions(SCANand
PRESET)thatarenotfoundonfrontpanel.Theoperationsofthesefunctionsaredescribed
asfollows:
TheSCANhastwobuttonsthatallowyoutotuneupanddowntheAMofFMradiospectrum.
Pressthe''buttontotunetowardhigherfrequenciesor''buttontotunetowardlower
frequencies.WhentheSCANbuttonsarepressedmomentarily(<0.5second),thetuned
frequencyshiftsupordownbyonestep.WhentheSCANbuttonsarepressedandheld
morethan0.5second,thetunerwillscaninastation-by-stationmoderatherthaninsmall
tuningsteps.
Oncethefrequenciesoffavoritestations(upto30ineitherFMorAM)havebeenstoredin
thisunit.ToseehowtosetupmemorystationspleaserefertoMEMORYdescription.
Then,justpressthePRESETbuttonsandthestationsinthememoryoftheunitcanbeeasily
Mostbuttonsontheremotecontrolproducethesameeffectasthecorresponding
buttononthefrontpanelofthetuner.
SCAN
PRESET
AMC RC-006
MEMORY
12
4 6
8
0
9
3
5
7
AM/FM
AM/FM
TEXT
PROGRAM
TAPE
SCAN PRESET

9
SPECIFICATIONS
WeltronicsCorp.reservedtherighttoimproveitsproductsatanytime.Specificationsare
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

Allthesafetyandoperatinginstructionsshouldberead
beforetheapplianceisoperated.
Thesafetyandoperatinginstructionsshouldberetainedfor
futurereference.
Allwarningsontheapplianceandintheoperatinginstructions
shouldbeadheredto.
Alloperatinganduseinstructionsshouldbefollowed.
Theapplianceshouldnotbeusednearwater-forexample,
nearabathtub,washbowl,kitchensink,laundrytub,inawet
basement,ornearaswimmingpool,etc.
Theapplianceshouldbeusedonlywithacartorstandthatis
recommendedbythemanufacturer.
Anapplianceandcartcombinationshouldbe
movedwithcare.Quickstops,excessiveforce,
andunevensurfacesmaycausetheappliance
andcartcombinationtooverturn.
Thisequipmentisnotdesignedforusemountedonawallora
ceiling.
Theapplianceshouldbesituatedsothatitslocationorposition
doesnotinterferewithitsproperventilation.Forexample,the
applianceshouldnotbesituatedonabed,sofa,rug,orsimilar
surfacethatmayblocktheventilationopenings,orplacedina
built-ininstallation,suchasbookcase orcabinetthatmay
impedetheflowofairthroughtheventilationopenings.
Theapplianceshouldbesituatedawayfromheatsources
suchasradiators,heatregisters,stoves,orotherappliances
(includingamplifiers)thatproduceheat.
Theapplianceshouldbeconnectedtoapowersupplyonlyof
thetypedescribedintheoperatinginstructionsorasmarked
ontheappliance.
Power-supplycordsshouldberoutedsothattheyarenotlikely
tobewalkedonorpinchedbyitemsplaceduponoragainst
them,payingparticularattentiontocordsatplugs,
conveniencereceptacles,andthepointwheretheyexitfrom
theappliance
Theapplianceshouldbecleanedonlyasrecommendedby
themanufacturer.
Thepowercordoftheapplianceshouldbeunpluggedfromthe
outletwhenleftunusedforalongperiodoftime.
Careshouldbetakensothatobjectsdonotfallandliquidsare
notspilledintotheenclosurethroughopenings.
Theusershouldnotattempttoservicetheappliancebeyond
thatdescribedintheoperatinginstructions.Allotherservicing
shouldbereferredtoqualifiedservicepersonnel.
Theapplianceshouldbeservicedbyqualifiedservice
personnelwhen:
a)Thepower-supplycordortheplughasbeendamaged;or
b)Objectshavefallen,orliquidhasbeenspilledintothe
appliance;or
c)Theappliancehasbeenexposedtorain;or
d)Theappliancedoesnotappeartooperatenormallyor
exhibitsamarkedchangeinperformance;or
e)Theappliancehasbeendropped,ortheenclosureis
damaged.
(APPLIESTOTUNERANDRECEIVERSONLY)
Anoutdoorantennashouldbelocatedawayfrompowerlines.
(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
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).
1.READINSTRUCTIONS
2.RETAININSTRUCTIONS
3.HEEDWARNINGS
4.FOLLOWINSTRUCTIONS
5.WATERANDMOISTURE
6.CARTSANDSTANDS
6A.
7.WALLORCEILINGMOUNTING
8.VENTILATION
9.HEAT
10.POWERSOURCES
11.POWER-CORDPROTECTION
12.CLEANING
13.NONUSEPERIODS
14.OBJECTANDLIQUIDENTRY
15.SERVICING
16.DAMAGEREQUIRINGSERVICE
17.POWERLINES
18.OUTDOORANTENNAGROUNDING
22
2
2
SAFETYINSTRUCTION
S3125A
PORTABLECARTWARNING
AntennaLead
InWire
Ground
Clamp
Electric
Service
Equipment
PowerServiceGrounding
ElectrodeSystem
(NECArt250PartH)
GroundClamps
Antenna
Discharge
Unit(NEC
Section810.20)
GroundingConductors
(NECSection810.21)
AntennaGroundingAccordingto
theNationalElectricalCode
NationalElectricalCode
AvailablefromLibrary,book
stores,orNationalFireProtection
Association(BatterymarchPark,
Quincy.MA02269).
AMC21-3004

AMCWeb:http://www.amchome.com
PN:21-4133