Okufanele ukwenze uma iziteshi zethelevishini zedijithali zingabonisi nokuthi kungani lokhu kwenzeka

Izinga kanye nokuba lula kokusakaza iziteshi zedijithali kungonakaliswa ukwehluleka kwemishini. Ungajahi ukubiza inkosi futhi unikeze imali. Kwesinye isikhathi inkinga ixazululwa ngaphandle kongoti.

Yiziphi izinkinga ezithinta ukuboniswa kwamashaneli edijithali

Uhlu lwezinkinga ezivelayo luhlanganisa ukwehluleka okwenzeka njalo umsebenzisi wesibili ngamunye ahlangabezana nakho. Imishini yokusakaza yedijithali neyokwamukela idizayinelwe izethameli eziningi, ngakho ukuhlukana okungavamile akufakiwe. Nokho, zikhona izikhathi lapho:

• ukusesha kwimodi ezenzakalelayo akutholanga isiteshi esisodwa;
• akutholakalanga konke okusakazwa esifundeni sakho;
• iziteshi zinezimpinda;
• i-set- top box ixhunyiwe, kodwa imenyu ayiveli esibukweni ngemva kokucindezela inkinobho ehambisanayo kusilawuli kude;
• imenyu ye-set-top box isesikrinini, kodwa uma uqala ukusetha, kuvela umyalezo othi “Ayikho isignali”;
• asikho isignali, futhi azikho izinhlelo ezibonisayo;
• i-autosearch ayitholanga lutho, umlayezo esikrinini: “Azikho izinsizakalo”;
• isithombe siqhwa kuhlaka olulodwa, sihlukana sibe ama-cubes, umsindo “uyangingiza”;
• isithombe esingacacile, ikhwalithi yomsindo ephansi, noma lutho;
• isithombe esimnyama nesimhlophe kusikrini se-TV esinemibala.

Kungani bengabonisi amashaneli edijithali?

Ukwehluleka, lapho okokusebenza kungawamukeli futhi kungaqophi isignali yedijithali, kunezimbangela ezimbalwa. Kunezinkomba ezithile zokuthi ukukhanda, ukushintshwa kwemishini, noma ukuqinisekiswa kokuxhumeka okulungile nokulungiswa kuyadingeka.

Lapho ufuna imbangela, suka kokulula uye kokuyinkimbinkimbi. Ukwehluleka ngezinye izikhathi kubonakala kalula, futhi akudingi isikhathi esiningi nolwazi ukukuqeda. Uma ulahlekelwe isithombe, noma iziteshi zingacutshungulwa, okokuqala, buza ukuthi omakhelwane bakho, izihlobo noma abantu obaziyo abahlala endaweni yangakini banokusakazwa yini.

Ukuhluleka kwe-antenna

Ukwehluleka kwe
– antenna akuvamile. Izizathu zalokhu ukulimala kwemishini, umthelela wezimo zezulu (umbani, umswakama, umoya onamandla), uma ungaphandle. Noma ukwehluleka kwe-amplifier yesignali, uma ikhona.

Izinkinga ngezintambo nokuxhuma

Uma okokusebenza kuxhumeke ngokungalungile, amaphutha alandelayo ajwayelekile:

• isokhethi engalungile isetshenziswe ukuxhuma ipulaki;
• ibhokisi lokusetha elingaphandle alixhunyiwe ngendlela efanele;
• Izinto ezisetshenziswayo azixhunyiwe kumapayipi amakhulu, futhi izinkomba zamandla ezisebhokisini le-set-top noma i-TV azikhanyi.

Izinkinga zehardware

Ukuze uthole isignali yedijithali, uthi kanye neshuna yangaphandle noma eyakhelwe ngaphakathi kuyadingeka. Ukwehluleka okujwayelekile kwazo zonke izisetshenziswa kungenzeka:

• ukungasebenzi kahle kwe-console ;
• i- firmware yomamukeli wekhwalithi ephansi , inguqulo yakudala yesofthiwe yokukhipha amakhodi, i-firmware ayizange iqedwe ngendlela efanele noma ayizange iqedwe;
• izinkinga ngokwamukela isignali , – isiqondiso esingalungile se-antenna kumbhoshongo ophindaphindayo, ukuphazamiseka endleleni yesignali (izakhiwo, imiqhele yemithi, amagquma);
• ukusetha kabusha izilungiselelo, i-firmware yehadiwe esiphelelwe yisikhathi (etholakala ku-LG TVs);
• umsebenzi wokulungisa, isimo esiphuthumayo noma  ukunqanyulwa okuhleliwe kokusakaza opharetha bethelevishini yedijithali ukuze kubuyiselwe noma umsebenzi ohleliwe.

Izinkinga ngokwamukela isignali

Ibanga lefrikhwensi ye-decimeter okwenziwa kuyo ukusakazwa kwedijithali lifuna indlela yokwamukela i-antenna kumbhoshongo ophindayo. Noma yikuphi ukuphazamiseka endleleni yayo kubangela ukulahlekelwa kwikhwalithi yesiginali eyamukelwe. Lokhu kubandakanya okulandelayo:

• Isimo sezulu esibi . Imvula, ukuduma, ukukhithika, inkungu idala ingemuva futhi iphazamise ukusakazwa kwesignali okuvela embhoshongweni.
• Izithiyo zomzimba (ukuphazamiseka) ekuqondeni kwesignali.
• Ukwamukela isignali evela emibhoshongweni ephindaphindayo emibili noma ngaphezulu .

Iziteshi zedijithali azibonisi, ngenxa yokuthi ayikho isignali ye-DVB T2 – okufanele ukwenze: https://youtu.be/iZn_YUFZTtw

Okufanele ukwenze uma zingekho iziteshi ngenxa yesizathu esisodwa noma esinye

Ngaphambi kokuxhumana nesevisi, qiniseka ukuthi ukuhlukaniswa akukwazi ukulungiswa ngokwakho. Xhumana nochwepheshe lapho yonke imizamo yokubhekana nayo yodwa yehlulekile.

Ihlola okokusebenza, izilungiselelo nokuxhumana

Qiniseka ukuthi elinye lamaphutha alula alikenzeki:

1. I-set-top box noma i-TV ayifakiwe kumandla kagesi . Uma kuvuliwe, inkomba eluhlaza kufanele ikhanyiswe. Hlola ukuthi izinto zikagesi zixhunyiwe yini.
2. Uxhumo lwekhebula olusuka othini lwenziwa kupulaki ephumayo . Ikhebuli ixhunywe kokokufaka. Isayinwe ngezinhlamvu zesiLatini INPUT noma IN.
3. Kwamanye amamodeli we-TV, imibala yamapulaki ekhebula e-RCA ihlukile kumibala yojeke ebhokisini elibekwe phezulu . Esikhundleni sesixhumi esiphuzi, kusetshenziswa okuluhlaza, okuzungezwe ngendwangu ephuzi. Ama-TV amadala awanaso isixhumi sekhebula elibomvu, okusho ukuthi idlala umsindo we-mono. Ukuxhumeka kwayo akudingekile, kodwa okunye kufanele kuxhunywe ngendlela efanele.
4. Uma uthi lungayitholi isignali ye-UHF, lushintshe ukuze uhlole .
5. Shintsha umthombo wesignali ku-TV . Cindezela inkinobho ethi “SOURCE” kusilawuli kude se-TV. Kwamanye amamodeli, lena inkinobho yokufaka ividiyo – indilinga enomcibisholo ngaphakathi noma enye yezinketho: “AV”, “AV / TV”, “INPUT”. Amamodeli e-TV ahlukene avela kubakhiqizi abahlukene angase abe nemithombo yamavidiyo amaningi. Zikhethe ngayinye ngayinye kuze kuvele ithebula lemenyu yeshuna yedijithali.
6. Vula isistimu yombala ye-PAL noma i-SECAM .
7. Qiniseka ukuthi i-firmware ithobelana nezinga lokusakaza . Inkinobho “Imenyu” ku-set-top box, bese “Ukufaka” noma “Izilungiselelo” kuye ngemodeli ye-set-top box nomkhiqizi wayo. E-Russia basakaza ngefomethi ye-DVB-T2. Uma izinga lihlukile, lishintshe.
8. Hlaziya kabusha okokusebenza ngokukuxhuma ku-PC futhi uqale ngokulanda inguqulo entsha ye-firmware kuwebhusayithi yabakhiqizi bemishini. Izikhungo zesevisi zihlinzeka ngale sevisi uma kuba nobunzima.
9. Thenga okokusebenza okuhambisana nezinga lokusakaza .

Ukuhlola ikhwalithi yokwamukela kanye nokuba khona kwesignali yeziteshi zokusakaza emoyeni

Akuyona nje ikhwalithi yesithombe ku-TV, kodwa futhi ukulungiselelwa kwesiteshi sokuqala kuncike ebukhoneni bokusakaza kanye nezimo zokwamukelwa kwayo. Ukutholwa kwenkinga kuwujuqu ukuze kuthathwe izinyathelo ezengeziwe. Yenza lokhu okulandelayo:

1. Hlola amandla esignali eyamukelwe . Ngokucindezela inkinobho ethi “INFO” kusilawuli kude sebhokisi le-set-top (izikhathi ezingu-2-3, kuye ngemodeli ye-set-top box), phumela kumenyu yolwazi lwesignali. Ihlukile kumabhrendi we-TV avela kubakhiqizi abahlukene, kodwa ihlale inezinga lezinga. Ungabona isithombe esifanayo ngokusebenzisa “Ukusesha Mathupha”.
2. Hlola kumephu yolwazi lokusakaza okusebenzisanayo mayelana nemodi yokusakaza yama-opharetha okusakaza . Uma ukusakaza kuyekwa okwesikhashana, dlulisela ukushuna nokusesha kwesiteshi esikhathini sokusebenza okuzinzile.
3. Lungisa i-antenna iqonde kumbhoshongo ophindayo . Inkomba yesilungiselelo esilungile isikali samandla esignali esikhulisiwe. Uma ukulungiselelwa kungazange kusize, udinga ukushintsha indawo yokufaka ithikithi noma uyihlomise nge-amplifier.
4. Yenza ukusesha mathupha kweziteshi ngokuya ngemingcele yokusakaza evela emibhoshongweni endaweni yangakini . Idatha ingatholwa ngokukhetha isifunda sakho kumephu yethelevishini esebenzisanayo.
5. Hlola ikhebula eliphuma othingo ngokubona ama-crease, umonakalo . Linganisa ukumelana ne-insulation nge-ohmmeter. Phakathi kwe-conductor emaphakathi kanye ne-braid, inani liseduze nokungapheli, kumqhubi ophakathi nendawo kanye ne-braid emikhawulweni yomibili iseduze no-zero, uma isilinganiso esinjalo sitholakala.
6. Shintsha ikhebuli evela othini iye kwentsha . Ukumelana kwekhebula elifanele kungama-75 ohms.

Iziteshi zikamabonakude zedijithali, akukho siginali, futhi isithombe siyabhidlika – izimbangela kanye nokuqedwa kwazo: https://youtu.be/4fRdee5g6xs

Shuna ngokuzenzakalelayo

Iziteshi zikamabonakude ezidijithali zishunwa ngokuzenzakalelayo. Ukulandelana kwezenzo kumishini ehlukene kuhluke kancane emagameni wezinto zemenyu, noma kunenguqulo yazo yesiNgisi kuphela. Ukuze uqale ukusesha okuzenzakalelayo:

1. Cindezela inkinobho ethi “Imenyu” noma “Imenyu” kusilawuli kude sebhokisi lokumisa phezulu.
2. Ohlwini oluvela esikrinini, khetha into ethi “Sesha iziteshi” ngemicibisholo ekurimothi, cindezela “KULUNGILE”.
3. Qala umsebenzi “wokusesha isiteshi ngokuzenzakalelayo” usebenzisa inkinobho ethi “KULUNGILE”.
4. Linda ukuthi ukusetha kuqede lapho uhlelo luphuma kumodi yokusesha yesiteshi futhi luqala ukusakaza.

Ezweni laseRussia, iziteshi ezingama-20 zitholakala mahhala (eMoscow – 30). Ukusakaza kunikezwa ama-opharetha amabili. Uma uneziteshi eziningi ngenxa yokusetha, kusho ukuthi isignali evela kwabaphindayo besifunda esingumakhelwane iyatholakala esifundeni sakho. Kukhona okuphindeke kabili ohlwini lwezinhlelo zokusakaza.

Uma esikhundleni se-20, ibhokisi le-set-top lithole iziteshi ezingu-10, khona-ke ukusakazwa komsebenzisi oyedwa kwamiswa okwesikhashana. Udinga ukumisa kamuva.

Ukushuna ama-TV anamashuna akhelwe ngaphakathi kuyefana uma okokusebenza kuklanyelwe ukuthola ithelevishini yedijithali ye-DVB-T2. Ukuze ulungiselele, landela lezi zinyathelo:

1. Cindezela inkinobho ethi “Imenyu” noma “Imenyu”.
2. Khetha “Amashaneli” usebenzisa imicibisholo ekurimothi, bese “Ukushuna Okuzenzakalelayo” noma “Ukusesha Ngokuzenzakalelayo”.
3. Efasiteleni elivelayo, khetha “Ikhebula” ukuze ukhethe umthombo.
4. Kumenyu elandelayo, khetha uhlobo lwesiginali “Idijithali”.
5. Bese uhlobo lokusesha luthi “Full”.
6. Amanye amamodeli adinga ukuthi ugcwalise idatha yosesho. Agcwaliswa kusetshenziswa okhiye kusilawuli kude. Izinga lokudlulisa – 6875 kS/s, ukuguqulwa – 256 QAM.
7. Cindezela inkinobho ethi “KULUNGILE” ukuze wenze kusebenze “Qala” noma “Sesha”.
8. Linda ukusesha kwesiteshi kuqedwe kuze kuqale esinye seziteshi zokusakaza.

Ukusesha mathupha

Ukusesha kule modi kuyadingeka uma iziteshi ekusesheni okuzenzakalelayo ziyimpinda. Ukushuna kufanele kwenziwe kuphela esiteshini esidluliswayo endaweni yangakini lapho isignali enamandla kakhulu futhi ezinzile kakhulu yamukelwe.
Ukuze uthole ulwazi mayelana nabaphindayo endaweni yangakini, sebenzisa i-
Digital TV Interactive Map , thola isevisi yendawo yangakini. Ukusetha okulandelayo kwesinyathelo ngesinyathelo kuyisibonelo esijwayelekile:

1. Kusilawuli kude seshuna (ibhokisi le-digital set-top), cindezela inkinobho ethi “Imenyu” noma “Imenyu”.
2. Kumenyu evulayo, khetha “Sesha iziteshi”, cindezela inkinobho “KULUNGILE”.
3. Okulandelayo, vula “Ukusesha mathupha”.
4. Gcwalisa noma khetha ohlwini oluhlongozwayo idatha yesifunda sakho etholwe kumephu.
5. Sebenzisa imicibisholo ukuze uzulazule uye entweni ethi “Sesha”, qala inqubo.
6. Linda ukuqedwa.

Ithelevishini yedijithali iyisizukulwane esisha sokwamukela nokudlulisa ulwazi. Ngekhwalithi ephezulu yesithombe esiwumphumela nomsindo, ukungasebenzi kahle nokuhluleka kwemishini akuvamile. Ngokuvamile inkinga isezintweni ezincane, futhi kufanele ibhekwe phezulu, ngaphandle kokungena ezinqubweni eziyinkimbinkimbi.