AMC XT Instructions For Installation And Operation Manual

Brand: AMC

Model: XT

Category: Audio tuners

Type: Instructions For Installation And Operation Manual

DAB

STEREOTUNER

APPLICATIONANDFEATURELIST

FeaturesoftheAMCmodelXT

*TheAMCmodelXTtunerisdesignedtomeetprofessionalqualitystandardsfor

receptionofAMandFMbroadcasts.

*Selectgradecomponentsareutilizedthroughoutthecircuitdesignwithspecial

emphasisoncomponentswithintheaudiopathtoassurestable,consistent

performanceandsuperbsoundquality.

*Quartzreferencedphaselockedloop(PLL)circuitryassuresprecisetuning.

*Sophisticatedsurfaceacousticwave(SAW)filteratantennainputguardsagainst

interferenceandnoise.

*SpeciallyselectedlinearphaseIFfilterscombinedwithothermatchedcircuit

componentscontributetotheultralowdistortionandexcellentstereoseparation.

*Atotalof30AMandFMstationsinanycombinationmaybestoredforrecall.The

presetmemoryisnonvolatileandwillretainstoredentriesformorethantwoweeksin

theeventofpowerloss.

*AMONOmodeisprovidedtominimizebackgroundnoisewhenlisteningtoweak

stations.

*Built-inRDSfunction:Providesautomaticreceptionanddisplayofdataprovidedby

stationsutilizingtheRadioDataSystem(RDS)intheirbroadcasts(RBDSinUSA).

*DABreadyforfutureup-gradation.

1.RECEPTACLE&FUSE(T1AL250V)

2.FMANTENNATERMINAL

3.AMANTENNATERMINAL

4.RS232

5.IRIN&IROUT

6.ZONE

7.REGION

8.OUTPUTJACKS

9.TRIGGER

DAB

1.POWERSWITCHANDPOWER

INDICATOR

2.STATIONPRESET

3.MEMORY

4.AM/FM

5.MONO

6.AUTO

7.TUNING

8.TEXT

9.TIME

10.PROGRAM

11.TYPE

2 8 67 4 5 9 1

REARPANELCONNECTIONS/FRONTPANELCONTROLS

REARPANEL

FRONTPANEL

101198

23 4 5 6 7

REARPANELCONNECTIONS

1.ACRECEPTACLE

TheACRECEPTACLEisforyoutoplug

inwithpowercordattachedinthe

packingoryoucanpluginwithother

powercordwithyourpreferences.

2.FMANTENNATERMINAL

3.AMANTENNATERMINALS

4.RS232CONNECTOR

5.IRIN&IROUT

6.ZONE1234SWITCH

7.REGIONSWITCH

8.OUTPUTJACKS

9.TRIGGER

AnantennamustbeconnectedtotheXT

foreffectivereceptionofFMbroadcasts.

Aribbonwire"foldeddipole"antenna,

whichlookslikea"T"whenstretchedout,

isincludedtogetyoustarted.Forbest

results,thecrossbarportionofthe"T"

shouldbestretchedouthorizontallyand

attachedtothewall,tothebackofa

cabinetoronthefloor.The"Vertical"part

ofthe"T"shouldbeconnectedtothe75

OhmFMantennainputontherearpanel

ofthetunerbyusingthe75Ohm

matchingtransformerwhichisincludedin

theaccessorypackage.Foradditional

informationonantennaoptions,referto

"NotesOnAntennas"sectionattheend

ofthismanual.

AsinglewireissuppliedasanAM

antenna.ConnectittotheAMantenna

terminalandpositionitforbestAM

receptionbyinsertingoneleadintothe

terminalmarked"AM"andleavingthe

otherleadunconnected.Foradditional

informationonantennaoptions,referto

the"NotesonAntennas"sectionatthe

endofthismanual.

XTcanbehookedtoacontrolsystem

throughtheRS232connector.TheXT

canbehookeduptoUSBHubor

EthernetSwitchthroughRS232toUSB

orRS232toEthernetadaptor.Through

theRS232connector,theXTcanaccept

commandsfrom yoursystemcontroller

andfeedbackstatustobedisplayed.For

detailsofRS232commands,refertothe

appendixIenclosed.

IRsignalfromroomsorIROUTofother

unitscanbeconnectedthe3.5mmmini

IRINjackontherearpanelofXT.So,XT

canbecontrolledbytheIRremotecontrol

ineachroomthroughIRsensor.Thereis

IROUTasbufferedoutputofIRINfor

controllingunitshookinguptoXTor

operatingasdaisychainfortheIRsignal

passingthroughthesystem.

Youcanselectdifferentremotecommand

codestocontroluptofourXTs

independentlywiththesamewireless

remotecontrolsystem.SettheZone

switchtothenumber1-4that

correspondstothezoneyouprogrammed

withtheremotecontrolhandset(see

RemoteControl).Whenyouturnonthe

XTafteryoumovetheZoneswitchthe

displaywillbrieflyflashZONECHANGE

withthezonenumberyoujustselected.

Notes:

-ThefactorysettingfortheZoneswitch

andremotehandsetare1.

-TheZoneswitchshouldonlybe

changedwhentheXTisturnedoff.

Settheswitchfortheregionwhereyou

live.TuningincrementsintheUSA

position(NorthAmerica)are200KHzfor

FMand10KHzforAM.Turingincrements

intheEUposition(Europe,UK,

Scandinavia)are50KHzforFMand

9KHzforAM.

ConnectstandardaudiocablesfromtheL

andRoutputjackstotheTunerinputon

yourpreamplifierorsystemcontroller.

YoumayconnecttheXTtoanyline-level

input,eveniftheinputisn'tlabel"tuner".

ForconveniencetheXTcanbetriggered

toturnonautomaticallywhenasuitable

voltageisappliedtoitsTriggerINjack.

Whenautomaticturnonisselectedthe

XTfrontpanelPowerbuttonisdisabled

sothaton/offisdeterminedsolelybythe

triggeringpreamporcontroller.

WhentheManAutoswitchisinitsMan

(manual)position,theautoturnon

functionisdisabledandtheXTmustbe

turnedonandoffmanuallywiththe

Powerbuttononitsfrontpanel.

WhentheManAutoswitchissettoits

Autoposition,theXTisturnedonandoff

witheitheranexternaldcoracvoltageof

3.3Vto30Vfromyourcontrolleror

preamplifier.Whenexternalvoltage

ceasestheXTwillturnoffimmediately.

TheAutoswitchpositiondisablesthe

frontpanelPowerbutton.

TheXT3-30VAC/DCinputusesa2.5mm

dcjack.TotriggertheXT,plugoneendof

thecordintothisjackandtheotherend

intothesourcecomponent'strigger

output.Somecomponentsmayusea

3.5mmtriggeroutputjack,soyoumay

havetousea3.5mmjackto2.5mmplug

adaptor.

The12Vdctriggerloopjackletsyou

"daisy-chain"theincomingtriggervoltage

toanadditionalXTorothercomponent.

ManPosition

AUTOPosition

IN(3-30VAC/DC)

OUT(12VDC)

FRONTPANELCONTROLS

1.POWERSWITCH

2.STATIONPRESETS

3.MEMORY

4.AMFM

5.MONO

6.AUTO

Whenthepowerswitchispressed,theXT

turnsonandthesmallindicatorlightabove

theswitchwillglowblue.Presstheswitch

againtoturnofftheXTandtheindicator

lightgoesout.

AnycombinationofAMandFMstations,

uptoatotalofthirtyselections,maybe

storedinthememoryofthetuner.Each

selectionisassignedtoapresetbutton

andmayberecalledbypressingthe

appropriatepresetbutton.Thememory

willpreservepresetassignments

permanentlyafterapowerlossorifthe

AClinecordisunplugged.

ThisbuttonengagestheMemoryEnter

modewhichisusedtoassignselected

stationstothepresets.Procedurefor

enteringstationsintomemory:

a.SelecteithertheFMorAMbandby

pressingtheAMFMbutton.

b.Manuallytunetothedesiredstationby

usingtheTuningControlbuttons.Check

thecentertuneindicatortobesurethatthe

stationisproperlytunedandadjustif

necessary.

c.Tostoretheselectedstationinpreset

number1,presstheMEMORYbutton,then

pressthe0buttonandthenthe1button.

(Forpresetpositions1through9,the0

buttonshouldbepressedbeforethe

numberispressed,i.e.01,02,03,etc.

Otherwise,youmayhavetowaitforfew

secondsafterthe1to9digitispressed.)

NOTE:AftertheMEMORYbuttonis

pressed,apresetpositionmustbe

selectedwithinapproximately5seconds.

Ifnopresetpositionisselectedwithinthat

time,theMemoryEntermodewill

automaticallydeactivate.

d.Aftertuningtothenextdesiredstation,

presstheMEMORYbuttonthen,within5

seconds,pressthe0buttonandthe2

buttontostorethatstationinpreset

position2.

e.Continueinthismannertillallselected

stationshavebeenentered.

f.Ifyouchangeyourmindormakea

mistake,itisnotnecessarytoreprogramall

presetsinsequence.Reprogramany

presetsimplybytuningtothedesired

station,presstheMEMORYbuttonand

thenpressthedesiredpresetnumber.

g.IftheMEMORYbuttonispressedby

accident,itcanbedeactivatedimmediately

bypressingagaintheMEMORYorAMFM

buttonorsimplybywaiting3to5seconds

forautomaticdeactivation.

Thisbuttonswitchesbetweenthetwo

tuningbands:FMorAM.Thedigitaltuning

displayshowsthetunedfrequencyinMHz

(forFM)orKHz(forAM).Thetuningcircuit

maintainsa"laststationselected"memory,

returningtothepreviouslyselectedstation

whenswitchingbetweenbands.

WhenastereoFM signalisdetected,the

tunerautomaticallyswitchesintostereo

modeanddisplaysthe"S".However,very

weakFMstationsignalsmaybe

excessivelynoisy.PressingtheMONO

buttondisablesthestereoFMcircuitsinthe

tunerresultinginsignificantreductionof

noise.The"ML"isdisplayedwhen

enforcedmonooperationisengaged.

RemembertodisengagetheMONObutton

whentuningtonormalstrongerstations

becauseaslongastheMONObuttonis

engaged,broadcastscannotbereceivedin

stereo.

ThisbuttonengagestheAUTOmode,

indicatedby"(A)"ontheleftofthe

display.WheninAUTOmode,thetuner

advancesinastation-by-stationmode.

WhentheTuningbuttonsarepressed,

thetunerwilladvancerapidlyupordown

automaticallystoppingatthenextstation

whosesignalisstrongenoughtoassure

goodreception.Amutingcircuit

automaticallysilencestheoutputduring

theadvancetillthetuningcircuitslock

ontoastation.DisengagingtheAUTO

buttonputsthetunerintoMANUALmode

whichallowstuninginsmallstepsto

searchforweakstationsorfinetuningto

minimizeinterference.TheMANUAL

modepartiallyoverridesthescanmuting

allowingallstationsandinterstationnoise

tobeheardatreducedlevelswhile

tuning.WhenMANUALmodeis

operating,"(M)"isindicatedinthedisplay.

TuningupordowntheAMandFMbands

isaccomplishedbypressingeitherofthe

twoTUNINGbuttons.Pressthe>button

totunetowardhigherfrequenciesorthe<

buttontotunetowardlowerfrequencies.

WhentheXTisinMANUALmode,the

tuningfrequencywillchangeinsmall

steps.WhentheXTisinAUTOmode,the

frequencywillcontinuetoadvancerapidly

tillthebuttonisreleased.Observethe

Tuningindicatorswhilefinetuningto

obtainmaximumsignalstrength.OnFM,

finetunetillthecentertuneindicatoris

illuminated.

WhentheTIMEbuttonispressed,the

timeisdisplayed.Thefirsttwo

charactersattheleftofthedisplay

indicateAMorPMfollowedbythetime.

Iftheselectedstationisnottransmittinga

timesignal,NOCLOCKwillappearinthe

display.

WhentheTYPEbuttonispressed,the

typeof programmaterialwillbe

displayed,e.g.News,Classic,Pop,

Sport,etc.Iftheselectedstationisnot

transmittingTYPEinformation,NONEwill

appearinthedisplay.

NOTE:TIME,TEXT,PROGRAMand

TYPEareRDSfunctions.Fortheareas

ortheradiostationsdonothaveRDS

broadcasting,thedisplaymaynotshow

anysignificantinformation.7.TUNING

9.TIME

11.TYPE

8.TEXT

10.PROGRAM

WhentheTEXTbuttonispressed,atext

messagewillrepeatedlyscrollthrough

thedisplay.Iftheselectedstationisnot

transmittingatextmessage,NOTEXT

willappearinthedisplay.

WhenthePROGRAMbuttonispressed,

theselectedstationnamewillappearin

thedisplay.Iftheselectedstationisnot

transmittingthestationname,NONAME

willappearinthedisplay.

Aninfrared(IR)remotecontrolRC-S1is

providedforconvenientoperationofthe

XT.Theremotecontrolhandsetprovides

mostofthesimilarcontrolfunctionsas

thefrontpanel.RC-S1isAMCsimplified

delicatesystemremotecontroller.Not

onlyitcancontrolXTbutalsoAMC

preamplifiers/receiversandCDplayers.

Theremotecontrolhasarangeof

approximately20-25feet(6-7.5meters).

UseonlyAAAalkalinebatteriesinthe

handsetandinsertthemaccordingtothe

+and-polaritymarkingsinthebattery

compartment.

ToturnXTon.

ToturnXToff.

PressthisbuttontotogglebetweenFM

andAMfrequencybands.

PressthisbuttontoactivateAUTO

TUNE.

PressthisbuttontoactivateMANUL

TUNE.

and

TuningupordowntheAMandFM

bandsisaccomplishedbypressingeither

ofthetwoTUNEbuttons.Pressthe>

buttontotunetowardhigherfrequencies

orthe<buttontotunetowardlower

frequencies.

OFF

FM/AM

AUTO

MANUAL

TUNE>TUNE<

RC-S1

ONOFF

1 2 3

4 5 6

789

0+10

AUX

PHONOCD TUNER

STOP

PLAY/PAUSE

FM/AM

ZONE

VOLUME

PRESET

AUTO

DIRECTMANUAL

TUNE

TRACK

REMOTECONTROL

ZONE

0123456789

PRESET

DIRECT

Youcanselectdifferentremote

commandcodestocontroluptofourXTs

independentlywiththesamewireless

remotecontrolsystem.Programthe

remotehandsettothenumber1-4that

correspondstotheZoneswitchnumber

ontheXT.

Notetheremotehandsetwillnotoperate

theXTunlessitszonenumbermatches

theZoneswitchsetting.Thefactory

settingsfortheremotehandsetandthe

unit'sZoneswitchare1.

Tosettheremotezonecode,pressboth

thezonekeyandthekey1~4which

correspondstothesettingoftheXTZone

switch.Thesekeysmustbepressed

simultaneouslyforabout1.5seconds.

The numberedkeysperformseveral

functionswhencombinedwithPRESET,

DIRECTandCDbuttons.Seebelow:-

Whenthisbuttonispressed,the

numberedkeyscanbefordirectaccess

toeachstoredpresetstation.Presets1-9

aredisplayedasP01,P02,P03,andso

on.Toselectstationpresets10-30,press

thetensplacekeyfirst.Forexample,to

select26,firstpresskey2,thenpresskey

CDTUNERAUXPHONO

VOLUME>VOLUME<

PLAY/PAUSE

STOP

TRACK>TRACK<

Whenthisbuttonispressed,the

numberedkeyscanselectthebroadcast

frequencyofthestationyouwishto

receive.FirstpresstheDIRECTkey,then

thenumberedkeyscorrespondingtothe

station.

InUSA:toreceiveFM103.7,press

DIRECT,1,0,3,7,0.

INEurope:toreceive103.75,pressthe

DIRECTkey,thenpresskeys1,0,3,7,5.

Noteifyouenteranincomplete

frequency,suchas1,0,3,7whichis

missingthefinal0or5,therewillbea

shortpausewhiletheXTfillsinthe

missingnumberandfindsthestation.

Thesefourbuttonsselectwhichinput

signal(CD,TUNER,AUXandPHONO)is

fedtotheinputsofAMCpreamplifieror

receiver.

Whenispressed,thenumbered

keys(0-9and10)allowdirectselectionof

desiredtrack.

and

Thesetwobuttonsareusedforadjusting

theoverallloudnesslevelofthesound.It

hasnoeffectonthelevelofthesignals

fedtotheTAPEOUTjacksfortape

recording.

ForAMCCDplayersuse,pressthis

buttontotogglebetweenPLAYand

PAUSE.

ForAMCCDplayersuse,tostopCD

whileplaying.

and

ForAMCCDplayersuse,toletyouset

thedesiredtrackforlistening.

SPECIFICATIONS

WeltronicsCorp.reservedtherighttoimproveitsproductsatanytime.Specificationsare

subjecttochangewithoutnotice.

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%

100Hz-6kHz....................................................................0.2%

STEREO1kHz..................................................................0.08%

100Hz-6kHz....................................................................0.3%

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

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

FrequencyResponse30Hz-15kHz................................................................+/0.5dB

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

30Hz-10kHz.......................................................................35dB

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

AMTUNERSECTION

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

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

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

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

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

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

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

Dimensions(WxHxD).......................................................................430x82x300mm

Powerconsumption.................................................................................................15W

Inmostcases,theexceptionalsensitivityofAMCtunercircuitsresultsinachievingvery

goodperformancewithonlyaribbonwiredipoleantenna.Howevertherearelimitations

toadipole.ItisnoteffectiveatrejectingmultipathdistortionandotherformsofFM

interferenceanditcannoteasilybeorientedforoptimizingitsreceptionpattern.Other

possiblesolutions,inorderofincreasingcost,include:

1.IndoorTVantenna(rabbitears)withoutextracoilsortuningswitches

*WillNOTimprovethestrengthofweaksignals.

*Hassolidmetaltunedelementsthatcanberotated.

*Thetwoelementsshouldbeextendedtoatotallengthof30inches(75cm)and

orientedhorizontallyoratashallowanglelessthan45degreesupward.

*Theantennaconnectingwireshouldbeconnectedtothetuner75Ohmantenna

terminalusingthematchingtransformerincludedinthetuneraccessorypackage.

*Afterselectingastation,rotatetheantennaforbestreception.

2.IndoorTVantenna(rabbitears)withatuningswitch

*WillNOTimprovethestrengthofweaksignals.

*MayreducesometypesofFMinterference,suchasreflectedmultipathsignals.

3.Electricallytunedindoorantenna

*WillNOTimprovethestrengthofweaksignals.

*MayfurtherreducesometypesofFMinterference,suchasreflectedmultipathsignals.

4.Outdoorantenna

*Provideslargestselectionofstationsandbestreceptionwithlowestnoiseand

distortion.

*Narrowerdirectionalpatternmoreeffectivelyrejectsreflectedmultipathsignals.

*Signalstrengthisdirectlyproportionaltotheantennaheightabovetheground.

*Maybemountedtoatallmastortoaroof.

*BecauseTVantennasarepurposelydesignedtobeweakatFMfrequencies,to

lesseninterferencetoTVsignals,adirectionalFMonlyantennawillprovidebest

results.

*FMonlyantennashouldbemountedashighabovegroundaspracticalandatleast

twometers(7feet),bothhorizontallyandverticallyawayfromotherantennas.

*Canbemountedonarotortoallowaimingatstationslocatedindifferentdirections

(morethan90degreesapart).

*Useshieldedleadinwireratherthanplain"twinlead"wireforbetterperformance,

longerlifeandprotectionfromtheweather.

*Disconnectanyindoorantennafromthetunerbeforeconnectingtheoutdoorantenna.

CAUTIONS:

*Avoidpowerlineswhenlocatingandinstallingantenna

*Includealightningarrestorintheinstallationtoprotectbothyourselfandthetuner

frompotentialdangerduringelectricalstorms.

OUTDOORAMANTENNA

*ToimproveAMreception,a"longwire"outdoorAMantennamaybeinstalled.

*A"longwire"antennaissimplyastraightwirewhichmayvaryinlengthfromafewfeet

uptoabout100feet(30meters).

*Mustbemountedparalleltotheearthandshouldbelocatedashighabovetheground

asconvenient.

*ConnecttothetunerattheAMantennaterminal.

*ConnectanotherwirefromtheGroundterminaltoatrue"earth"ground,suchasa

copperplatedroddrivenseveralfeetintotheearth.Alternategroundsincludea

coldwaterpipe,asteamradiatororeventhethirdholeofamodernelectricalwall

socket.

NOTESONANTENNAS

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

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

WELTRONICSCORP.

LONDON/L.A.

AMCWeb:http://www.amchome.com

PN:21-2622

AMC XT Instructions For Installation And Operation Manual

Brand: AMC

Model: XT

Category: Audio tuners

Type: Instructions For Installation And Operation Manual

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AMC XT Instructions For Installation And Operation Manual

AMC XT Instructions For Installation And Operation Manual

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