I-DVB S ne-DVB S2 iyini ku-TV futhi yini umehluko phakathi kwayo

Uma umsebenzisi ezwa isifinyezo se-DVB, angase angazi njalo ukuthi kusho ukuthini. Lesi sifinyezo simele “Ukusakazwa Kwevidiyo Yedijithali”. I-DVB S, i-DVB S2, i-DVB T,
i- DVB T2 , i-DVB C ivame ukushiwo. Izimpawu ezengeziwe zibonisa indlela yokwamukela amashaneli. I-DVB T ne-DVB T2 ihlinzeka ngokwamukela ithelevishini yasemhlabeni. I-DVB C isebenza
nomabonakude wedijithali . Izifinyezo ze-DVB S ne-DVB S2 zibhekisela
kumabonakude wesathelayithi . Izinga le-DVB S2 liyinguqulo entsha nethuthuke kakhulu uma iqhathaniswa ne-DVB S.

Isamukeli esiyinhlanganisela esisebenza namazinga e-dvb t2 dvb s2

Uyini umehluko phakathi kwamazinga e-dvb nama-s2

I-TV ngayinye iyakwazi ukusebenza ngezindinganiso ezishiwo umenzi. Lokhu kusho ukuthi kusukela ekubukeni kwezobuchwepheshe, ngokuxhuma ikhebula kusuka kumthombo ofanele kuya kusixhumi esifanele, umamukeli wethelevishini anganikeza ukwamukelwa kwekhwalithi ephezulu yomthombo wesignali. Empeleni, ukuthola ividiyo kuba nzima yiqiniso lokuthi ikhwalithi yesiginali engenayo ingase ingabi phezulu ngokwanele. Lokhu ngeke kukuvumele ukuthi uthole isithombe esihle nomsindo. Isibonelo, isimo esinjalo senzeka uma ukulungiswa kwesathelayithi kwenziwa kabi. Enye inkinga ihlobene nokubethelwa kwesiteshi. Kwezinye izimo, ukuze ukwazi ukubuka izinhlelo ezithile, udinga ukuzikhokhela kumhlinzeki. Izokhipha umamukeli okwazi ukunikeza ukwamukela kwakhe noma
ikhadi le-CAM, ezosusa ukubhala ngokuzenzakalelayo ividiyo futhi iyenze itholakalele ukubukwa. Ukusetshenziswa kwe-DVB S2 kunikeza abasebenzisi izinzuzo ezilandelayo:

1. I-DVB S iyindinganiso evamile yokubuka i-TV yesathelayithi. Ikhwalithi ephezulu yesibonisi yenza kube nzima nakakhulu kumanodi ahlinzeka ngokwamukela. I-DVB S2 inikeza ukwamukelwa kwekhwalithi ephezulu.
2. Ezinye iziteshi zisakaza kuphela ku-DVB S2. Ukwazi ukubuka i-DVB S kuphela, awukwazi ukufinyelela kuzo. Ngakho, uma umsebenzisi efuna ukufinyelela eziteshini zokusakaza zesimanje ezinekhwalithi ephezulu, uzodinga ukugxila ekusebenziseni inketho entsha.
3. Isivinini sokudlulisa ulwazi siphezulu ngo-30%.
4. Ngokusebenzisa i-DVB S2 umsebenzisi uthola ukufinyelela eziteshini eziningi ze-HD.

Ukusebenzisa izinga elisha konga kakhulu ngokwezindleko zamandla. [i-id yamagama-ncazo = “okunamathiselwe_4044″ align=”aligncenter” wide=”1024″]
Umamukeli osekela i-dvb s2, i-dvb s[/caption]

Ingakwazi ukwenzani ishuna ye-DVB S2?

Ishuna ye-DVB S2 inezinga eliphezulu lomsebenzi. Inganikeza umnikazi izinzuzo ezilandelayo:

1. Ingasekela kalula ukubuka ku-DVB S2 ejwayelekile kanye ne-TV evamile.
2. Izinga okukhulunywa ngalo liwukuthi, ngokungafani ne-DVB S, izindlela ezimbili. Ayikuvumeli nje kuphela ukuthi uthole ulwazi oluvela kusathelayithi, kodwa futhi uyidlulisele kolunye uhlangothi. Lokhu kukuvumela ukuthi uyisebenzise ukuthola ukufinyelela ku-inthanethi ngesathelayithi.
3. Le tuner ivumela amanye amadivayisi ukuthi axhume ku-inthanethi.
4. Yehlisa izinga lokuhlanekezela uma ithola isignali yesathelayithi.
5. Iqeda ubungozi bokuqanda ngenkathi ubuka isithombe noma umsindo.

Ukuxhumana usebenzisa le nketho kuyashesha futhi kuthembekile. Uma kukhona ishuna eyakhelwe ngaphakathi, lokhu kwenza kube nokwenzeka ukubuka amashaneli angabethelwe. Ngokuvamile, lezi azikho ngaphezu kwamaphesenti angu-10 enani lawo. Ukuze ubuke okunye, uzodinga ukuthenga ikhadi le-CAM kumhlinzeki. Uma izilungiselelo zenziwe ngendlela efanele, kuyenzeka ukuthi ubuke iziteshi ezivuliwe kubahlinzeki abambalwa. Lokhu kuvumela ukufinyelela enanini elibalulekile lokudlulisela. Ngokuthenga i-TV eneshuna eyakhelwe ngaphakathi, umsebenzisi ulondoloza ekuthengeni umamukeli. Ukwengeza, lokhu kunciphisa ukusetshenziswa kwezintambo ezengeziwe efulethini. Ububi be-DVB S2 kusewukudlanga kwayo okuphansi. Ngesikhathi esifanayo, inani leziteshi ezinjalo likhula njalo, okwenza uxhumano lube nenzuzo eyengeziwe. [i-id yamagama-ncazo = “okunamathiselwe_4045”
Imodulator esebenza ngamazinga e-IPTV, i-TV yesathelayithi – DVB S, S2, T, T2 [/ amazwibela]

Ungathola kanjani ukuthi i-TV isekela izinga le-DVB S2

Ama-TV amaningi esimanje ayakwazi ukusebenza ngezinga elisha. Kulokhu, uma isiteshi singabethelwe, vele ufake ikhebula, usethe idivayisi, futhi ungaqala ukubuka. Uma umamukeli wethelevishini engasebenzi naleli zinga, ngeke akwazi ukubuka izinhlelo ngendlela ekhonjisiwe. Ukuze wenze lokhu, udinga isiqalo esikhethekile – umamukeli. Umsebenzisi uzoba nentshisekelo yokwazi ukuthi idivayisi ayithengile ingasebenza yini ne-DVB S2. Ulwazi mayelana nalokhu lungatholakala encwadini yeziqondiso noma kuwebhusayithi yomkhiqizi. Lapho, izindinganiso ezakhelwe ngaphakathi zokwamukela zizokhonjiswa ngaphandle kokwehluleka. Uma uhlu luqukethe indinganiso okukhulunywa ngayo, awudingi ukuthenga umamukeli ukuze ukuthole. Lapho uthenga, impendulo yalo mbuzo ingatholakala kumthengisi. Uma i-TV engemuva inesixhumi sekhebula esivela othini. Lokhu kukodwa akusho ukuthi kungenzeka ukuthola i-TV yesathelayithi. Ingasakazwa kuphela noma idijithali. [i-id yamagama-ncazo = “okunamathiselwe_4046” align = “aligncenter” wide = “758”]
Isixazululo se-DVB-S2-IP transcoder[/caption]

Ungaxhuma futhi usethe kanjani i-TV yesathelayithi nge-DVB S2 ejwayelekile

Ukuxhuma ithelevishini yesathelayithi, umsebenzisi kufanele anqume ukuthi iziteshi zamahhala zimenele yini. Uma elindele ukwandisa amakhono akhe, kuyadingeka ukukhetha umhlinzeki ofanelekayo futhi anqume ukuthi iyiphi iphakheji ahlela ukuyithenga. Ngaphambi kokuxhuma ngokuqondile, udinga ukwenza okulandelayo:

1. Xhumana nomhlinzeki bese usayina isivumelwano naye.
2. Thola ikhadi le-CAM kuye ukuze ufinyelele iphakheji ekhethiwe yamashaneli.
3. Uma kunesidingo, udinga ukuthenga isamukeli esisekela i-DVB S2.
4. Faka i-smart card endaweni efanele bese uyibhalisa nomhlinzeki.

Ngemva kokuqeda lezi zinyathelo, udinga ukulinda kuze kube yilapho idatha yokubhalisa ibuyekezwa. Manje udinga ukuxhuma ngokuqondile futhi ulungiselele iziteshi. Ukuze wenze lokhu, kufanele wenze lezi zinyathelo ezilandelayo:

1. Ngemuva kwe-TV, udinga ukufaka ikhebula elisuka esitsheni sesathelayithi esokhethi elihloselwe yona ngemuva.
2. Ukuze umise iziteshi, udinga ukuqala ukusesha kwazo.
3. Ekuqaleni, into eyodwa kuphela yomsebenzi enegama elithi “Sesha” izobonakala kuzilungiselelo.
4. Okulandelayo, uzodinga ukucacisa umthombo wesiginali. Njengoba wazi, ukusakazwa kukamabonakude kungaba semhlabeni, ngesathelayithi noma ngedijithali. Endabeni ecutshungulwayo, kuyadingeka ukukhombisa ukuthi sikhuluma ngesathelayithi ngokubheka umugqa ofanele.
5. Isiteshi sesathelayithi ngasinye sihlotshaniswa nesathelayithi ethile. Udinga ukucacisa ukuthi iyiphi bese usetha imingcele yayo.
6. Esikrinini sokukhetha sesathelayithi, ungazulazula kulezo esezivele zisenkumbulweni ye-TV. Ngamunye wabo, ungabona igama nemvamisa esetshenzisiwe. Uma uchofoza inkinobho ethi “Shintsha izilungiselelo zesathelayithi”, ungalungisa imingcele yayo. Ikhasi lizokhombisa ikhwalithi yesiginali etholwe kuyo. Uma kunesidingo, ungangeza isathelayithi entsha ngokuchofoza inkinobho efanele.
7. Okulandelayo, uzodinga ukucacisa imingcele yosesho. Kunezinketho ezintathu lapha: “Yeqa iziteshi ezibethelwe”, “Sesha inethiwekhi” kanye “nokusesha okuyimpumputhe”. Zontathu izinkambu zingashiywa zingahloliwe.
8. Udinga ukuchofoza inkinobho ethi “Run”. Ngemva kwalokho, iziteshi zizoseshwa isikhathi esithile. Umsebenzisi angalinda ukuphela noma akuchithe. Kuzo zombili izimo, iziteshi ezitholakele zizogcinwa.

Ngemva kokuqedwa kokuskena, ungavula izilungiselelo futhi bese uya esigabeni “Amashaneli”. Uma kunesidingo, ungabuka uhlu nemingcele yakho, futhi wenze ukuhlela kokugcina kwezilungiselelo zesiteshi.

Izinkinga zokusetha okungenzeka

Nansi indlela ukusetha kwenziwa ngayo ezimweni eziningi. Ngokuvamile kwenzeka ngokuzenzakalelayo, okwenza kube nokwenzeka ukuqala ukubuka izinhlelo ze-TV esikhathini esizayo esiseduze. Nokho, ngezinye izikhathi izinkinga zingenzeka phakathi nenqubo yokusetha. Okuvame kakhulu kubo yilezi ezilandelayo:

1. I-antenna eshunwe ngokungalungile . Uma ingaqondiswanga kahle, izobangela ukwehla okukhulu kwekhwalithi yesignali. Uma umsebenzisi ehlangabezana nalokhu, kufanele aqinisekise ukuthi iqondiswa ngendlela efanele .
2. Ukusebenzisa isamukeli – amaphutha ayenzeka uma uyixhuma .
3. Kwesinye isikhathi ikhadi elinikezwe umhlinzeki we-CAM alinikezi ukuthintana okuhle . Kulokhu, udinga ukuyibeka ngendlela efanele kusixhumi.
4. Kwesinye isikhathi i-TV isebenzisa i-firmware yakudala . Kulokhu, kufanele ibuyekezwe ibe yakamuva.
5. Kwezinye izimo, izinkinga zesignali zingase zenzeke ngenxa yokwehluleka kwezobuchwepheshe kwesidlulisi . Kulesi simo, kunconywa ukuthi ushayele umhlinzeki futhi ucacise isimo.

Ngokuvamile, lapho kuxhunywe kahle, izinkinga zibangelwa izimo ezingahleliwe. Ukuze uthole isixazululo, udinga ukuphinda uhlole imingcele esethiwe noma ukusebenza kwemishini ekhona.

Ungathola kanjani ukuthi i-TV ineshuna yesathelayithi

Ulwazi mayelana nokuba khona kweshuna yesathelayithi luqukethwe emibhalweni yezobuchwepheshe ye-TV. Ungazibonela wena noma uye kuwebhusayithi yomkhiqizi futhi utadishe idatha ethulwe lapho.