Analogi & Digital TV Transmitter | Tanthauzo & Kusiyana

  

Chiyambireni chizindikiro cha digito cha TV, makampani ochulukirachulukira adachepetsa pang'onopang'ono mphamvu yamphamvu zonse ma transmitter a TV a analogi ndikugwiritsa ntchito ma transmitter a digito pa TV mochulukira chifukwa cha zabwino zosiyanasiyana zaukadaulo wa digito. Apa pakubwera funso: Kodi pali kusiyana kotani pakati pa chowulutsira TV cha analogi ndi chowulutsira pa TV ya digito?

 

Kugawana ndi Kusamalira!

  

Timasangalala

  

Tanthauzo la TV Transmitter

 

A Wotumiza TV ndi chipangizo chamagetsi chomwe chimawunikira mafunde a wailesi, chomwe chimanyamula chizindikiro cha kanema choyimira chithunzi chosunthika komanso mawu omvera omwe amalumikizidwa nawo. Idzalandiridwa ndi wolandila wailesi yakanema ndikuwonetsa chithunzicho pazenera ndikutulutsa mawu ofanana. Ma frequency ake ogwirira ntchito amangokhala ma frequency a VHF ndi UHF, ndipo mphamvu yake yogwira ntchito imachokera ku 5W mpaka 10kW. Amagwiritsidwa ntchito nthawi zambiri pamawayilesi a kanema wawayilesi ngati ma TV.

 

Makanema apa TV amafalitsa mafunde a wailesi m'njira ziwiri:

 

  • Kutumiza kwa analogi - Zithunzi ndi mawu amawu amafalitsidwa kudzera pa siginecha ya analogi yosinthidwa pawailesi. Njira yosinthira mawu ndi FM ndipo makanema ndi AM.
  • Kutumiza kwa digito - Zithunzi ndi zomveka zimafalitsidwa kudzera pazizindikiro za digito "1" ndi "0".

 

Njira ziwiri zopatsirana zimabweretsa magawo osiyanasiyana a analogi TV transmitter ndi digito TV transmitter. Kusiyana kumeneku kudzafotokozedwa mwatsatanetsatane m'munsimu.

 

Kusiyana pakati pa Analogi & Digital TV Transmitter

 

Monga tafotokozera pamwambapa, njira zosiyanasiyana zotumizira ma sign ndi chifukwa chachikulu cha kusiyana pakati pa chowulutsira TV cha analogi ndi chowulutsira TV cha digito m'magawo osiyanasiyana, omwe ali makamaka muzinthu zinayi.

Mphamvu zamakanema a TV

Zizindikiro za analogi ziyenera kukhala ndi bandi yayikulu. Pachiyambi, FCC imagawa 6MHz iliyonse kukhala njira imodzi pakati pa gulu lololedwa, ndipo njira imodzi imakhala ndi njira imodzi ya TV. Chifukwa chake, chowulutsira TV cha analogi chimawulutsa njira zochepa zapa TV.

  

Pambuyo pa kukhazikitsidwa kwa transmitter ya digito ya TV, ngakhale gulu lololedwa pafupipafupi ndi bandwidth yamayendedwe ndizofanana kale, chizindikiro cha digito chimafunikira bandwidth yotsika. Tsopano njira ya 6MHz imatha kukhala ndi ma TV 3-6. Chifukwa chake, chowulutsira cha digito cha TV chimatha kufalitsa ma tchanelo ambiri a TV.

Kutumiza chizindikiro

Chifukwa chowulutsira TV cha analogi chimagwiritsa ntchito kusinthasintha kwa FM ndi AM modulation, pomwe chotengera cha digito cha TV chimagwiritsa ntchito chizindikiro cha digito chomwe chimayimiridwa ndi 1 ndi 0. Chifukwa chake, potengera kutumizirana ma siginecha, wotumizira ma TV wa digito ali ndi izi:

  

  • Itha kutumizira ma siginecha pamtunda wautali popanda kupotoza kwa ma siginecha, kuwonetsetsa kuti digito ndi mawu abwino.
  • Digital TV transmitter imatha kufalitsa mawonekedwe apamwamba azithunzi zamakanema komanso mawu omveka bwino. 
  • Makina osindikizira a digito amathandizira kutumiza zithunzi zosinthidwa, monga kusintha kusintha kwa chithunzi mu gawo linalake, kuwonjezera mawu owonjezera, makanema ojambula, ndi zina zambiri kuti chithunzicho chilemeretse.

 

Chowulutsira TV cha digito chimatha kufalitsa mapulogalamu osangalatsa a TV kwa omvera. Ndiukadaulo wa digito womwe umalengeza kuwulutsa kwapa TV ukulowa m'nthawi ya HDTV.

Mphamvu Za Chizindikiro

Pakuwulutsa kwa siginecha ya analogi, wolandila wailesi yakanema safuna mphamvu yayikulu ya siginecha yamawayilesi yofalitsidwa ndi chowulutsira TV cha analogi. Ngakhale ndi mphamvu yochepa ya chizindikiro cha wailesi, wolandila wailesi yakanema amatha kusewera chithunzicho ndi phokoso, kumangoyenda ndi chipale chofewa ndi phokoso. 

 

Kumbali inayi, wolandila wailesi yakanema wa digito amafunikira mphamvu yazizindikiro kuti ikhale pamwamba pamlingo wina, ndiye imatha kusewera chithunzi ndi mawu. Koma ngati mphamvu ya chizindikiro sichikwanira, patsala mdima wokha. 

Ndalama Zogula

Makanema a TV a analogi ndi TV ya analogi alibe zofunikira pazida zina zofunika. Anthu amatha kugula zida za analogi pa TV pamtengo wotsika. Komabe, kuwulutsa kwa digito kumafunikira kwambiri pazida zoyenera chifukwa chaukadaulo wovuta kwambiri, zomwe zikutanthauza kuti wogwiritsa ntchito ndi omvera ayenera kulipira ndalama zambiri kuti asinthe zida zawo zapa TV monga chowulutsira TV cha digito, mlongoti wapa TV wa digito, wolandila TV wa digito, ndi zina zotero. .

  

Chifukwa cha njira zosiyanasiyana zogwirira ntchito za digito ya TV transmitter ndi analogi TV transmitter, zabweretsa zovuta zosiyanasiyana kwa ogwiritsa ntchito ndi owonera, kuphatikiza mtengo, mtundu wotumizira ma siginecha, zowonera, kapangidwe kazinthu zamapulogalamu, ndi zina zotero.

  

Momwe Mungasankhire Wotumiza Wabwino Kwambiri pa TV?

 

Posankha chowulutsira TV, kuwonjezera pa kusankha ngati ndi digito TV transmitter kapena cholumikizira TV cha analogi, m'pofunikanso kuganizira mmene ntchito pafupipafupi osiyanasiyana, kulekana pakati pa ma frequency audio ndi mavidiyo pafupipafupi, ndi bandiwifi.

Mawayilesi Okwanira

Zimatanthawuza mawayilesi omwe amapezeka pawayilesi wapa TV. Ma frequency a wailesi omwe amaloledwa pakali pano pa TV ndi HF, VHF, ndi UHF. Nawa ma frequency band mwatsatanetsatane:

  

  • 54 mpaka 88 MHz pamayendedwe 2 mpaka 6
  • 174 mpaka 216 MHz njira 7 mpaka 13
  • 470 mpaka 890 MHz pamayendedwe a UHF 14 mpaka 83

 

Makanema a TV omwe mumasankha akuyenera kugwira ntchito m'magulu atatu apamwambawa.

Kupatukana Kwambiri kwa Ma frequency a Audio ndi Makanema pafupipafupi

Malinga ndi malamulo aku US, ma frequency apakati a chonyamulira cham'makutu amayenera kukhala 4.5 MHz ± 5 kHz pamwamba pa ma frequency a chonyamulira chowonera pakutulutsa kwa makina osinthira kapena kukonza makina a kanema wawayilesi.Dinani apa

Lonse bandiwifi

Zimatanthawuza kuchuluka kwa ma sigino a wailesi omwe amafalitsidwa ndi chowulutsira TV, ndiko kuti, bandwidth yomwe amagwiritsa ntchito. Kukula kwa bandwidth, ndipamenenso ma TV amatha kunyamulidwa.

  

Zomwe zili pamwambazi ndi ndondomeko yapadziko lonse lapansi yamayendedwe owulutsa opangidwa ndi ITU, yomwe inanena kuti ziwerengero zofunika kwambiri zotumizira ma TV ndi Kupatukana kwa Frequency pakati pa zonyamula zomvera ndi zowoneka, Radio Frequency, ndi Bandwidth. Ngati mukufuna kusintha kapena kugula zowulutsira pa TV, chonde yang'anani wogulitsa zida zoulutsira pawayilesi wodalirika ngati FMUSER, yemwe angakupatseni zida zapamwamba, zotsika mtengo zowulutsira pa TV ndi analogi ndi zida zogwirizana nazo, monga tinyanga ta pa TV ndi zina zotero. Ngati mukufuna, Dinani apa kudziwa zambiri.

 

FMUSER CZH518A-3KW Professional VHF/UHF Analogi TV Transmitter yama TV

 

Mafunso Ofunsidwa Kawirikawiri

1. Q: Kodi Kuwulutsa kwa TV Kungathe Kuwulutsa Mpaka Pati?

A: Ikhoza kuulutsa mtunda wa makilomita pafupifupi 40 - 60.

 

A Wotumiza TV imatha kufalitsa pamayendedwe pafupipafupi mu VHF, ndi magulu a UHF. Popeza mafunde amawayilesi a ma frequency awa amayenda poyang'ana, amatha kuyenda mtunda wa 40-60 mailosi kutengera kutalika kwa chowulutsira.

2. Q: Nchiyani Chingasokoneze Zizindikiro za TV?

A: Zopinga zozungulira chowulutsira TV zitha kusokoneza mtundu wa ma siginecha a TV.

 

Nthawi zambiri, zotchinga ndizomwe zili pakati pa nsanja zowulutsira kwanuko ndi mlongoti wanu wa Over-the-Air TV womwe ungasokoneze ma siginecha a TV, kuphatikiza mitengo, mapiri & zigwa, nyumba zazikulu, ndi zina zotero.

3. Q: Kodi Zizindikiro za TV Zimafalitsidwa bwanji?

Yankho: Amafalitsidwa ngati mafunde a wailesi kupita mlengalenga.

 

Chizindikiro cha TV chimanyamulidwa ndi chingwe kupita ku mlongoti, womwe nthawi zambiri umakhala paphiri lalitali kapena nyumba. Zizindikirozi zimaulutsidwa mumlengalenga ngati mafunde a wailesi. Amatha kuyenda mumlengalenga pa liwiro la kuwala.

4. Q: Kodi Frequency Band ya TV Transmitter ndi chiyani?

A: Itha kuwulutsa pamagulu a VHF ndi UHF.

 

A Wotumiza TV imatha kufalitsa m'magulu a VHF ndi UHF. Nawa ma frequency band mwatsatanetsatane:

 

  • 54 mpaka 88 MHz pamayendedwe 2 mpaka 6
  • 174 mpaka 216 MHz njira 7 mpaka 13
  • 470 mpaka 890 MHz pamayendedwe a UHF 14 mpaka 83

 

Kutsiliza

 

Ponena za izi, tikudziwa kuti ma transmitter a TV a analogi ndi ma TV a digito amatha kukwaniritsa zofunikira zosiyanasiyana. Kodi muyenera kugula zowulutsira pa TV? FMUSER ndiwodalirika wopereka zida zowulutsira pawayilesi ndi mayankho, omwe angakupatseni a wathunthu TV transmitter phukusi kuphatikiza ma analogi & digito ma transmitters apa TV akugulitsa, tinyanga ta TV tofananira tikugulitsidwa. Chonde lumikizanani ndi FMUSER. Timayesetsa kuti makasitomala athu azimva ndikumvetsetsa.

 

 

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