Isebenza kanjani i-cable TV nokuthi isebenza kanjani

Iyini i-cable TV, isebenza kanjani kanye nezinzuzo zayo kanye nokubi – izinto eziyisisekelo. Ukuze umsebenzisi akwazi ukubuka ukusakazwa, kufanele athole isignali ye-TV. Lokhu kungenziwa ngenye yezindlela ezintathu: ngothi olusemoyeni, ngentambo, nangokwamukela isignali evela kusathelayithi. Izindlela ezehlukene zokuthola isignali ye-TV:
Ukuze uthole isignali ye-TV, kudingeka uxhumano lwekhebula ezinsizeni zomhlinzeki we-TV. Lokhu kuvumela umsindo nesithombe sekhwalithi ephezulu, kodwa ezindlini lapho uxhumano lunganikezwanga, abasebenzisi abakwazi ukusebenzisa le ndlela. I-Cable TV ingaba yi-analog noma idijithali. Esimweni sokuqala, akudingi ukusetshenziswa
kwesiqalo, okwesibili kuyodingeka. Ama-TV angathola idatha ngefomethi ye-DVB-C angasebenza nesignali enjalo.

Umgomo wokusebenza, ukuthi ithelevishini yekhebula isebenza kanjani, ukuthi umsebenzisi uthola kanjani isignali

Ukuze usakaze isignali ngekhebula, okokuqala udinga ukuhlela ukwamukela kwayo. Lokhu kwenziwa esiteshini esikhulu. Amakhebuli abekwe kuwo, angena endlini lapho umsebenzisi ekhona. Isiteshi esikhulu singaxhuma eziteshini zesathelayithi noma sithole ukusakazwa kolwazi lwedijithali eziteshini ze-TV. Isignali ibe isisakazwa ngezintambo ze-fiber optic. Bayixhuma ezindlini zabathengi. Ukusuka lapho, obhalisile uxhunywe ngentambo ye-coaxial. Ama-amplifiers angasetshenziswa ukuthuthukisa ikhwalithi yesignali.
Ama-splitters asetshenziselwa ukuxhuma ikhebula eliholela efulethini:
Uxhumano lwenziwa ngu-opharetha wenethiwekhi. Iziteshi eziningi ziyakhokhelwa. U-opharetha wenethiwekhi angase ahlinzeke ngezinsizakalo zokufinyelela ku-inthanethi. Ngemva kokukhokhela ukufinyelela, umsebenzisi uthola ukufinyelela ekubukeni esebenzisa
ikhadi le-CAM . Ifakwa kusixhumi esikhethekile ku-TV noma isamukeli. Ungakwazi ukugada isimo se-akhawunti yakho ku-akhawunti yakho yomuntu siqu kuwebhusayithi yomsebenzisi. [i-id yamagama-ncazo = “okunamathiselwe_3072″ align=”aligncenter” width=”318″] Ungayifaka
kanjani futhi kuphi imojuli yekhamera ku-TV[/caption] Indlela ikhadi le-CAM elisetshenziswa ngayo:

Imvamisa yesiginali esakazwa ngekhebula isebangeni ukusuka ku-80 kuye ku-1000 MHz. I-bandwidth ingu-8 MHz.

Okudingayo ukuze uxhume ku-cable TV

Ukuze ukwazi ukubuka i-cable TV, udinga okulandelayo:

1. Udinga ukukhetha u-opharetha ohlinzeka ngamasevisi anjalo . Kubalulekile ukuthi ixhunywe ekhaya lomsebenzisi. Uma kungenjalo, udinga ukuxhumana nomunye wabaqhubi ngesicelo esifanele sokuxhuma.
2. Uzodinga isiqalo esizokuvumela ukuthi uthole isignali yethelevishini enjalo. Amanye amamodeli we-TV angakwenza lokhu ngokuqondile.
3. Uma uxhuma ku-opharetha, kufanele ukhethe amanani afanele . Ngokuvumelana nakho, umsebenzisi uzokwazi ukufinyelela iziteshi ze-TV ezahlukahlukene ngenkokhelo.
4. Iklayenti likhishwa ikhadi elikhethekile , elizokhomba iklayenti futhi liqinisekise iqiniso lokukhokha. Kufanele ifakwe kusixhumi esikhethekile ku-TV.

Ngemva kokuxhuma, umsebenzisi uzokwazi ukubuka iziteshi ze-TV azikhethile.

Inqubo yokuxhuma kanye nokumisa ikhebula lethelevishini yedijithali

Ukuze wenze uxhumano, udinga ukuxhuma ikhebula elisuka kumnikezeli we-TV uye ku-TV noma i-set-top box. Ngesikhathi esifanayo, imfuneko ukuthi kumele bakwazi ukusebenza ngezinga le-DVB-C. Lapho uxhuma, okokusebenza kufanele kunqanyulwe kumapayipi amakhulu. Manje i-TV ne-set-top box idinga ukuxhunywa kunethiwekhi. Ngemva kwalokho, isilungiselelo siyenziwa. Yenziwa ngendlela efanayo kumamodeli abo bonke abakhiqizi futhi ifaka nezinyathelo ezilandelayo:

1. Kurimothi, cindezela inkinobho ukuze ushayele imenyu enkulu.

2. Udinga ukukhetha isigaba esithi “Amashaneli”.
3. Okulandelayo, qhubekela ekusebenzeni kwenqubo ethi “Ukushuna Okuzenzakalelayo”.

7. Bese kuvuleka ikhasi lapho ungaqala khona inqubo yokusesha.
8. Udinga ukucacisa izwe lapho i-TV isetshenziswa khona. Kwezinye izimo, lapho ukhetha “Russia” kuma-TV amadala, izinga le-DVB-C ngeke lisebenze. Ezimweni ezinjalo, bonisa “Finland” noma “Germany”.
9. Okulandelayo, udinga ukucacisa umthombo wesignali, kulokhu khetha “Ikhebula”. Kwamanye amamodeli abamukeli bethelevishini, ingase ibizwe ngokuthi “Ikhebula” noma “i-DVBC”.
10. Nquma uhlobo lweziteshi – i-analog, idijithali, noma zombili.
11. Udinga ukukhetha u-opharetha.
12. Bese ukhetha “Ukusesha Okugcwele” bese uyisebenzise. Kufanele ulinde ukuthi iqede bese ulondoloza imiphumela.

Ezimweni ezingavamile, kungase kwenzeke ukuthi akuzona zonke iziteshi ebezilindelwe ezitholakalayo. Kulokhu, kuzoba lula ukusebenzisa ukusesha okwenziwa ngesandla. Nansi i-algorithm yokushuna isiteshi engalandelwa lapho kusethwa noma imaphi amamodeli we-TV. Nokho, kwezinye izimo, kungase kube nokuhluka okuncane. Uma isiqalo sisetshenziswa, inqubo yokusetha izoqhubeka ngendlela efanayo. Ngemva kokuxhuma, imenyu yayo izovezwa esikrinini. Ezimweni lapho ingamukeli ikhebula kuphela, kodwa futhi nezinye izinhlobo zethelevishini, uzodinga ukukhombisa indlela yokusebenza edingekayo. Ezinye izinyathelo zenziwa ngendlela efanayo nalapho usetha i-TV.
Ukwenza ukushuna ngezandla kuzoba usizo ezimeni lapho, ngasizathu simbe, zonke iziteshi ezidingekayo zingatholakalanga. Kulokhu, khetha “Usesho Lwezandla” noma “Inethiwekhi” kumenyu. Igama lingahluka kuye ngemodeli esetshenzisiwe. Le ndlela yokusesha iphumelela kakhulu, kodwa ithatha isikhathi esiningi kunalena ezenzakalelayo.
Ukuze uyisebenzise, ​​udinga ukwazi imingcele ethile yokusesha. Lokhu kufaka phakathi ukuqala nokumisa imvamisa, ukuguquguquka, umkhawulokudonsa, kanye nesilinganiso sebhithi. Lapho ucacisa imodi yokushuna, khetha ukuthi yiziphi izinhlobo zamashaneli ofuna ukuzithola – zasemhlabeni, ezedijithali, noma zombili. Okulandelayo, qala usesho. Lezi zici ngokuvamile zingatholakala kuwebhusayithi esemthethweni yomsebenzisi. Ukusesha kufanele kuphindwe ku-frequency ngayinye umsebenzisi anentshisekelo kuyo. Isibonelo, izinketho ezilandelayo zizocatshangelwa.

I-Smart TV LG – ukusethwa kwe-TV yekhebula

Ukuze ulungiselele, yenza lezi zinyathelo ezilandelayo:

1. Vula imenyu enkulu usebenzisa isilawuli kude ngokucindezela inkinobho ehambisanayo.
2. Kufanele ucacise “i-Cable TV” njengomthombo wesignali.
3. Khetha “Ukusesha ngokuzenzakalelayo”.
4. Okulandelayo, imenyu izonikezwa lapho uzodinga ukukhetha u-opharetha. Uma ingekho ohlwini, udinga ukuchofoza “Okunye”.
5. Chofoza ku-“Sesha Okugcwele”. Okulandelayo, udinga ukumaka zonke iziteshi zedijithali.
6. Ukucindezela inkinobho ethi “KULUNGILE” kuqala inqubo yokusesha ishaneli ezenzakalelayo. Kufanele silinde ukuqedwa kwayo bese silondoloza imiphumela.

Ngemuva kwalokho, umsebenzisi angaqhubeka nokubuka uhlelo lwe-TV aluthandayo. Ungawamisa kanjani amashaneli ngekhebula le-TV: ikhebula le-TV elivela kumhlinzeki: https://youtu.be/37rk89tpaT0

U-Sony

Ukuze uthole iziteshi ze-TV ezidijithali kuma-Sony TVs, udinga ukuthatha izinyathelo ezilandelayo:

1. Kurimothi, cindezela inkinobho ethi MENU.
2. Kumenyu evulayo, khetha umugqa “Ukucushwa kwedijithali”.
3. Okulandelayo, iya kokuthi “Sesha ngokuzenzakalela iziteshi zedijithali”.
4. Udinga ukucacisa indlela yokuxhuma. Ukuze wenze lokhu, khetha inketho ethi “Cable”.
5. Ohlwini, opharetha udinga ukukhetha okudingayo noma uchofoze “Okunye”.
6. Lapho ukhetha uhlobo lokuskena, bonisa “Okugcwele”.
7. Ukuze uqale inqubo, chofoza “Qala”. Kudingeka ukulinda ukuqedwa okuphelele kwenqubo.

Ngemva kokuba ukusesha kuqediwe, ungaqala ukubuka iziteshi ze-TV.

Izinhlobo zethelevishini yekhebula

I-Cable TV ingaba yi-analog noma idijithali. Esimweni sokuqala, ikhwalithi izoba ngaphansi kuneyesibili. Lokhu kungenxa yokungavikeleki okwanele kwesignali ekuphazamisekeni phakathi nokusakaza kwe-analogi. Ngesikhathi esifanayo, izinhlobo ezintathu zezimpawu zidluliselwa kumamukeli wethelevishini: ividiyo, umsindo nolwazi. Lesi sakamuva sisetshenziswa kakhulu ukusetha amapharamitha wesithombe. Ithelevishini ye-analogi yayivamile esikhathini esidlule, kodwa ukuthandwa kwayo kuncipha kancane kancane, okuholela kwezinye izinhlobo zokusakaza. Ithelevishini yekhebula yedijithali imelana kakhulu nokuphazamiseka futhi inikeza ikhwalithi yomsindo nesithombe esihle kakhulu. Kodwa-ke, lokhu kusebenzisa ikhodi eyinkimbinkimbi edinga okokusebenza okukhethekile ukuze kususwe ukubethela. Iziteshi ezinjalo ezimweni eziningi ziyakhokhelwa. Ukuze ufinyelele kuzo, udinga ukufaka inani ku-akhawunti yomhlinzeki, ehlinzekwa yi-tariff. Ngokuvamile, kulokhu, umsebenzisi kufanele afake ikhadi elinikezwe kuye endaweni ekhethekile – lokhu kuzoqinisekisa ukuthi uyakwazi ukufinyelela iziteshi ze-TV ezinikezwa opharetha.

Umehluko phakathi kwe-cable TV ne-terrestrial, isathelayithi, idijithali – enethebula eliwumphumela, elinama-pluses namaminithi.

Kunezinhlobo ezahlukene zethelevishini, ngayinye enezici zayo:

1. I-analog yasemhlabeni ibhekisela kumamodeli amadala kakhulu abamukeli bethelevishini. Kwakuvame kakhulu kwaze kwaba ngu-1990. Manje ukuthandwa kwayo kwehla njalo ngenxa yokushiyeka kwayo ngokwemvelo. Inzuzo enkulu ukuthi itholakala ngisho nakuma-TV amadala futhi ayidingi ukusetshenziswa kwemishini eyengeziwe. Sikhuluma ngokwamukela ku-antenna yegumbi noma yendlu, isignali esuka kuyo idluliswa ngentambo exhunywe ku-TV.
2. Umabonakude wedijithali wasemhlabeni wamukelwa egunjini noma uthi lwendlu. Umehluko ovela ku-analog ukuthi isignali idluliselwa ngefomu ledijithali. Idinga umamukeli ukuze amukele. Ihlinzeka ngekhwalithi ephezulu uma iqhathaniswa nesignali ye-analog yasemhlabeni.
3. I-analog yekhebula noma yedijithali idlulisela isignali kumthengi ngekhebula. Esimweni sokuqala, ngokusebenzisa isignali ye-analog, okwesibili, ngesignali yedijithali. Izinhlelo zitholwa emishinini yomqhubi, enikeza isignali yekhwalithi ephezulu. Ukuze umsebenzisi athole iziteshi ze-TV, ikhebula elifanele elivela kumhlinzeki kufanele lixhunywe endlini yakhe.

Uxhumo lwe-TV yekhebula:

4. Kumabonakude wesathelayithi , kusetshenziswa i-antenna ekhethekile, okumele ishunwe kahle emthonjeni wesiginali. Ukuze ubuke, kusetshenziswa umamukeli ocubungula isignali eyamukelwe ngaphambi kokuyiveza.

Isitsha sesathelayithi:
Uma siqhathanisa lezi zinhlobo zokusakaza, singasho okulandelayo.

[i-id yamagama-ncazo = “okunamathiselwe_8798″ align=”aligncenter” width=”454″]
Ikhwalithi yesiginali kukhebuli nomabonakude wedijithali wasemhlabeni[/caption] IPTV noma i-Cable TV, okungcono futhi uyini umehluko phakathi kwakho: https:// youtube. be/MCHa7Rhp3WI

Ubuhle nobubi be-cable TV

Lapho ubuka i-cable TV, ungasebenzisa lezi zinzuzo ezilandelayo:

1. Ikhwalithi ephezulu yesiginali eyamukelwe uma iqhathaniswa nokusakaza.
2. Uma udlulisa ngekhebula, ukuvikela ukuphazamiseka kunciphisa ukuba khona kokuhlanekezela kwesignali, okuqinisekisa ukusakaza kwekhwalithi ephezulu.
3. Ukuba khona kwenani elikhulu leziteshi ze-TV ezisezingeni eliphezulu nezithokozisayo.
4. Lapho uthola izinhlelo zethelevishini zedijithali, ukuba khona kwezakhiwo ezinde akunciphisi izinga lokwamukela, ngokungafani nethelevishini yasemhlabeni noma yesathelayithi.
5. Kumabonakude wasemhlabeni noma wesathelayithi, umkhawulokudonsa udlala indima ebalulekile. Ikhawulela inani lamashaneli atholakalayo. Lapho usebenza ngethelevishini yedijithali, akukho mkhawulo onjalo.

Ngesikhathi esifanayo, kubalulekile ukukhumbula ukungalungi kwale ndlela yokusakaza ithelevishini:

1. Ukusakaza kuvame ukukhokhelwa futhi kungafinyeleleki ngokwezimali, kodwa iziteshi zamahhala nazo zikhona.
2. Inkinga enkulu ukudluliswa kwesignali ngekhebuli eyi-coaxial. Emadolobheni amakhulu, lokhu kulula, kodwa ezindaweni ezincane nezikude kungase kube isithiyo ekutholeni, ngoba ikhebula alikwazi ukuhlala libekwe ezindlini. [i-id yamagama-ncazo = “okunamathiselwe_3206″ align=”aligncenter” wide=”488″] Isebenza kanjani intambo ye-coaxial[/caption]
3. Umamukeli uyadingeka ukuze ubuke, okufaka izindleko ezengeziwe. Ngakolunye uhlangothi, le divayisi ihlinzeka ngezici eziningi ezintsha neziwusizo, empeleni iguqule i-TV ene-set-top box ibe ikhompuyutha.

Umabonakude wekhebula usezingeni eliphezulu, kodwa ukusetshenziswa kwawo kubiza kakhulu kunasemoyeni.

Ungaxhuma kanjani ku-cable TV ngaphandle kwentambo?

Akunakwenzeka ukuxhuma ngokusemthethweni ku-cable TV ngaphandle kokusebenzisa ucingo. Nokho, kuyenzeka ukubuka iziteshi ze-TV ezidijithali nge-inthanethi. Kulokhu, uma kukhona i-router efulethini kanye ne-adaptha yokusebenza ne-WiFi ku-set-top box, isignali yokusakaza iziteshi ze-inthanethi ingatholwa ngoxhumano olungenantambo. Ukuze ubukele, udinga ukuthola isignali ye-TV ngendlela eyodwa noma enye. Ngakho-ke, kubalulekile ukuthi ibhokisi le-set-top elisetshenzisiwe linomsebenzi ongenazintambo. Uma ingekho i-node enjalo kuyo, kuzokwazi ukuxhuma i-adaptha yangaphandle. Ikhebula, isathelayithi kanye ne-TV yasemhlabeni ku-TV eyodwa – uxhuma kanjani: https://youtu.be/I23VvDXiIj0

Uyivula kanjani i-TV isuka kukhebuli iye kudijithali nesathelayithi

Ukwenza lokhu, kuyadingeka ukuthi i-TV kanye ne-set-top box ingasebenza nohlobo olufanele lokusakaza. I-Digital TV idinga uxhumano lwe-inthanethi. Ngesathelayithi, udinga ukufaka uthi oluzoqondiswa emthonjeni wesignali ofanele. Ngemva kokuxhuma izinto ezidingekayo, uzodinga ukulungisa nokusesha iziteshi. Ukuze uthole ithelevishini esemoyeni, uzodinga ukusebenzisa uthi lwefulethi noma uxhume kuleyo efakwe endlini ukuze isetshenziswe ngokujwayelekile. Ukuze usebenzise zontathu izinhlobo zokusakaza ku-TV eyodwa, ungasebenzisa ama-diplexer.
Ngosizo lwalezi zici ezimbili, ungakwazi ukuhlanganisa imiphumela ye-satellite, terrestrial kanye nekhebula likamabonakude kukhebuli eyodwa exhunywe ku-TV. Uma usebenzisa le ndlela, ukushintsha kuzokwenzeka ngokusebenzisa izilungiselelo zebhokisi lokubeka phezulu. Ngoxhumano olunjalo, kubalulekile ukuthi amafrikhwensi okusakaza awaphindaphindeki, kodwa ezikhathini eziningi le mfuneko iyahlangatshezwa. Uma lokhu kwenzeka, kuzomele kusetshenziswe izihlungi ezengeziwe zefrikhwensi kuxhumano olunjalo.
Kufanele kukhunjulwe ukuthi ukufinyelela iziteshi ezimweni eziningi kuzokhokhelwa. Kudingeka ukukhetha u-opharetha ofanele kanye nenani elifanele. Iziteshi zizotholakala ukuze zibukwe ngemva kokukhokha. Lapho ushintsha, kufanele ukhethe kahle umthombo wesignali kuzilungiselelo. Ngemva kokucacisa inketho oyifunayo, i-TV iqala ukudlala okuqukethwe okutholwe ngendlela eshiwo. Inhlangano yomsebenzi womhlinzeki wekhebula inesakhiwo somuthi. Iqoqa amasiginali kamabonakude ngokuhambisana nohlelo olutholakalayo lwemvamisa emithonjeni embalwa – kungaba isignali yesathelayithi, i-inthanethi, noma ukwamukela okusemhlabeni. Isignali ekhiqizwa ekuphumeni ingena kunethiwekhi yomgogodla, esebenzisa intambo ye-fiber optic ukuze kudluliselwe idatha.
Njengoba ikhebula lisetshenziselwa ukudlulisa isignali kumthengi, lokhu kwenza kube nokwenzeka ukwandisa imvamisa yesiginali edlulisiwe. Lokhu, nakho, kukuvumela ukuthi udlulise inani elikhulu kakhulu lolwazi kunomoya. Ngemva kokungena endlini ngentambo ye-fiber-optic, isignali ixhunywe ngesihlukanisi kukhebula eliholela ngaphakathi kwefulethi. Uma umnikazi ene-TV engaphezu kweyodwa, uzodinga ukusebenzisa esinye isihlukanisi ngaphakathi kwefulethi. Inani elikhulu lokuxhumana limelela amandla okuwohloka kwesignali. Ngakho-ke, kubalulekile ukuqinisekisa ikhwalithi nokuthembeka komunye nomunye wabo.

Imibuzo nezimpendulo

Umbuzo: “Yini efakiwe ezindlekweni zokuxhuma ku-cable TV?” Impendulo: “Kudingeka ukhokhele ukuxhuma, uthenge izinto zokusebenza uma kunesidingo futhi ukhokhele izinsizakalo ngokuya nge-tariff.”
Umbuzo: “Sekuyisikhathi eside ngisebenzisa i-cable TV. Sekuyisikhathi eside ngisebenzisa i-TV eyodwa, futhi manje ngithenge eyesibili. Yini okufanele ngiyenze ukuze ngiyixhume ku-cable TV? Impendulo: “Ukuze wenze lokhu, udinga ukuthenga isihlukanisi. Ixhunywe kuntambo ye-coaxial evela kumhlinzeki, ebekwe efulethini. Kusuka kusihlukanisi, kubekwe ikhebula elihlukile ku-TV ngayinye. Umsebenzisi angenza lokhu ngokwakhe noma athinte uchwepheshe ukuze enze lo msebenzi.
Umbuzo: “Iziphi izinzuzo eziyinhloko zethelevishini yekhebula?”Impendulo: “Uma usakaza isignali yethelevishini ngale ndlela, ikhwalithi ephezulu yesibonisi kanye nokuvikeleka okuhle komsindo kuyaqinisekiswa. I-Cable TV inikeza abasebenzisi iziteshi eziningi ze-TV abangazibuka.
Umbuzo: “Yini okufanele ngiyenze uma i-TV ingatholi isignali?”
Impendulo: “Imbangela evame kakhulu ukuba khona koxhumana nabo abanephutha. Ukuze uhlole lokhu, udinga ukubheka ngokubukeka ubuqotho bekhebula kanye nokuxhumeka kwayo kubhokisi le-set-top kanye ne-splitter. Kudingeka futhi uqinisekise ukuthi kusetshenziswa izilungiselelo ezifanele. Izinkinga zingenzeka futhi uma opharetha enza umsebenzi wezobuchwepheshe ngalesi sikhathi. Ungathola mayelana nalokhu esimemezelweni esihambisanayo kuwebhusayithi yayo esemthethweni. Uma ungakwazi ukunquma imbangela yenkinga ngokwakho, udinga ukushayela ochwepheshe bomqhubi.