Muab me ntsis hluav taws xob rov qab rau hauv koj lub TV teeb liab
Yog tias koj siv lub kav hlau txais xov los ntawm tam sim no koj twb pom tau qhov sib txawv ntawm analog thiab digital TV - vijtsam dav, channel cov zauv nrog cov zauv cim, siv lub DTV converter box, thiab ntxiv rau.
Muaj lwm qhov sib txawv, pom qhov sib txawv, uas yog qhov ua rau kev poob lossis tsis muaj qhov tsis txaus siab thiab Tsoom Fwv Teb Chaws Sib Txuas Lus (Federal Communications Commission) (FCC) txhais.
Nws yog cov digital teeb liab.
Analog v. Digital TV teeb liab
Cov xwm txheej zoo tib yam, digital TV teeb liab yuav tsis tuaj yeem mus kom deb li deb ntawm lub teeb liab analog TV vim tias cov kev tswj xeeb hauv terrestrial cuam tshuam nws ntau tshaj analog. Tej yam uas cuam tshuam rau kev txais tos muaj xws li ru tsev, phab ntsa, toj, ntoo, cua, thiab lwm yam.
Lub teeb liab hais yog li ntawd tus neeg taug kev mus rau hauv pem hauv ntej ntawm nws tau khob nws offline. Nyob rau hauv kev sib piv, ib qho teeb liab analog yog zoo li ib rab raim. Nws yuav siv ntau tshaj li ib tug neeg taug kev nyob rau hauv pem hauv ntej ntawm lub kav hlau txais xov mus tso lub teeb liab.
Tus cwj pwm ntawm zaj dab neeg yog tias kom tau txais ib daim duab zoo tshaj hauv-huab cua uas koj xav tau ib qho teeb meem zoo hauv lub TV tuner, seb nws nyob rau hauv lub TV lossis digital converter box . Qhov teeb meem yog tias lub teeb liab poob qis yog kev txhawj xeeb nrog digital TV.
Hauv qee qhov xwm txheej, koj tuaj yeem ua txhua yam zoo thiab tseem tsis tau teeb liab. Los yog, koj tuaj yeem paub txog lub teeb meem ntau dhau thaum digital digital teeb liab tsiv ntawm lub kav hlau txais xov mus rau tuner.
Xijpeem qhov teebmeem, ua kom nrov lossis boosting qhov teebmeem yog kev txhim kho rau koj qhov kev txais tos.
Koj Puas Yuav Tsum Tau Kom Tsim Nyog?
Cov ntsiab lus tseem ceeb rau kev txhawb zog yog tias koj muaj ib qho teeb meem uas twb tau txais los ntawm lub kav hlau txais xov. Yog hais tias tus kav hlau txais xov muaj lub teeb liab ces qhov kev txhawb zog yuav yog ib qho kev kho rau kev sib quas ntus. Yog tias nws tsis ua raws li kev ua haujlwm yuav tsis muaj tseeb yuav tsis kho koj qhov teeb meem.
Amplifying ib Digital Signal TV
Amplification yog ib qho kev qhia tswv yim. CEO ntawm AllAmericanDirect.com, Mike Mountford, piav qhia nws zoo tshaj plaws thaum nws piv cov amplifying lub teeb tsa digital TV los txuas ib lub tshuab rau tom kawg ntawm lub qhov dej kom tau zoo dua txau zog.
Nyob rau hauv nws zaj dab neeg, lub kav hlau txais xov uas tsis muaj kev txhawb nqa yog zoo li lub qhov dej nrog ib lub teeb trickle tuaj tawm ntawm lub kawg. Ib leeg, qhov khib nyiab tsis yog thaum nws txau, tab sis txij li thaum nws yog ib qho ua rau koj siv tau lub tshuab no los txo dej ntau los ntawm kev lim dej tsawg los ntawm qhov kawg. Lub nozzle yuav ua rau muaj hwj chim ntau dua li tsis muaj.
Hauv qhov ua piv txwv no lub nozzle yog lub zog thiab dej yog digital digital teeb liab. Lub tshuab ua kom siv hluav taws xob siv hluav taws xob rau lub TV teeb liab thiab xa nws ntawm nws txoj kev nrog hluav taws xob. Qhov no tso cai rau DTV teeb liab mus rau deb nrog ntau lub zog, uas yuav tsum tau muab ib daim duab zoo ib yam.
Amplification tsis yog ib qho kev cog lus kho rau txhua tus txom nyem TV txais tos scenario tab sis nws yog ib qho kev xaiv. Nws kuj tsis yog ib qho txhim kho kom tau lub TV teebmeem thaum tsis muaj - txhais tau tias lub amplifier tsis ntev rau ntau yam ntawm lub kav hlau txais xov. Nws tsuas muab lub teeb liab thawb rau nws txoj kev los ntawm cov kav hlau txais xov mus rau digital tuner (TV, DTV converter, thiab lwm yam). Hopefully, no laub yog txaus kom tau ib lub teeb liab zoo rau lub TV tuner .
Amplified khoom feem ntau raug nqi ntau tshaj cov khoom tsis-ua haujlwm. Yog li, nws yog ib qho zoo rau teeb meem qee qhov kev nyuab siab uas yuav ua rau cov teeb liab ua ntej mus rau tom khw thiab siv koj cov nyiaj rau ib yam khoom uas yuav lossis tsis kho koj qhov teeb meem txais tos.
Txheeb Txog Qhov Teeb Meem Ntxov Ua Ntej Ua Yooj Yim Zauv Digital Digital Signal
Koj puas siv lub splitter, RF modulator , lossis A / B hloov ? Cov no yog cov muaj ntau yam thiab ntau tus neeg siv lawv, tshwj xeeb tshaj yog tias koj tseem tabtom saib thiab teev ob txoj kev nrog DTV converter box.
Qhov teeb meem nrog lawv yog tias lawv txo lub zog ntawm cov teeb liab - cov ntsiab lus nws tsis yog muaj zog tawm hauv cov khoom tiv thaiv raws li nws tau nkag mus rau nws. Kev ua kom lub zog yuav txhawb qhov teeb liab tshaj qhov tsawg kawg nkaus uas koj lub Cheebtsam yuavtsum tsim cov duab zoo.
Yog tias koj siv lub kav hlau txais xov sab nraum zoov ces saib lub hom coaxial txuas nrog lub kav hlau txais xov thiab kab mus rau hauv tsev. Koj cov coaxial cable yuav yog qhov ua rau lub teeb liab ploj mus rau hauv tsev.
Qhov teebmeem ntawm no tsis raug xa mus rau qhov kev poob qab, uas yog kev ntsuas ntawm lub teebmeem dhau ntawm qhov chaw nyob deb. Nyob rau hauv cov ntaub ntawv ntawm coaxial cables, peb raug xa mus rau RG59 thiab RG6. Cias muab, RG6 yog ntau digital-phooj ywg dua RG59.
Hauv lwm lo lus, RG59 ua rau ntau tshaj los yog muaj teeb liab ntau dua RG6. RG59 cable yuav yog qhov ua rau koj cov teeb meem tsis zoo. Hloov koj lub xov tooj rau RG6 (zoo dua li plaub-shielded RG6 nrog kub-plated connectors) yuav kho koj qhov teeb meem txais tos tsis tas siv lub zog.
Ntawm chav kawm, yuav ib qho khoom muag zog tau yooj yim dua li hloov cov coaxial cable hauv koj lub tsev.
Koj tus kav hlau txais xov tam sim no yuav yog qhov naj npawb rau cov duab tsis zoo. Mountford tau hais tias qee tus ceg antennas yuav khiav lag luam txog 50% tsawg dua cov kev tshaj tawm digital TV vv analog.
Mountford cov tswv yim rau kev tshawb nrhiav kav hlau txais xov yog tib yam li kuv - mus rau Antenna Web thiab siv lawv cov cuab yeej hauv online los tshuaj xyuas TV kis yooj yim rau koj qhov chaw. Koj kuj tseem yuav ua tiag tiag qhib lub kav hlau txais xov, tab sis tsis yog tom qab mus rau Antenna Web kom tau txais koj txoj kev khiav hauj lwm ntawm qhov chaw taw tes rau nws.
Yuav Ib Lub Amplifier
Amplifiers lossis TV teeb liab boosters feem ntau muaj nyob rau hauv antennas, tab sis koj yuav tau lawv li ib cov khoom muag sawv ib leeg dhau lawm. Cov khoom ntim feem ntau tshaj tawm nrov nrov lossis muaj zog kav hlau txais xov. Yog tias koj pom DB qhov kev ntsuam xyuas ces koj paub tias nws muaj zog.
Raws li deb li tau txais tswv yim, zoo li koj tuaj yeem ua dej-nroj tsuag, koj tuaj yeem ua tau-ua kom nrov muaj suab nrov. Nws zoo li tshuab ua lub tshuab tso tawm suab los ntawm kev xa cov ntim ntau dhau.
Qhov nyuaj yog tias nws tsis yooj yim rau gauge dab tsi 's dhau zog rau koj tuner. Qee cov kws tshaj lij kuv tau hais kom pom zoo kom muaj kev sib tw nyob ib ncig ntawm 14db. Yog tias koj tuaj yeem yuav ib yam khoom uas muaj nqis DB nqis.
Yog tias koj yuav lub kav hlau txais xov muaj zog, nco ntsoov mus rau Antenna Web kom paub meej tias koj muaj koj tus kav hlau txais xov kom zoo ua ntej txuas lub hwj chim.