I-antenna yeTV “Polyachka” yolwamkelo olude lwe-DVB-T2: ukhetho lweamplifier, ukuphuculwa, ukufakela.

Abasebenzisi abaninzi bakamabonakude bedijithali bayazibuza ukuba ingaba i-eriyali epholileyo iya kuhambelana nolwamkelo lwe -DVB-T2 . Le ngxaki iye yangxamiseka ngakumbi emva kokuba urhulumente ethathe amanyathelo okuphucula usasazo kunye nemimandla emininzi yadityaniswa nosasazo lukamabonakude lwedijithali .

Ngaba i-grill yasePoland ifanelekile ulwamkelo lweTV yedijithali?

I-antenna yasePoland ngexesha elinye ngokukhawuleza yasasazeka kulo lonke ilizwe kwaye yafumana ukuthandwa phakathi kwabasebenzisi abaninzi. Esi sixhobo asithobekiyo ekugcinweni kwaye emva kofakelo akudingi ukuguqulwa okongeziweyo. Ngokufika kwe-DVB-T2 yosasazo lwedijithali kweli lizwe, abasebenzisi baqala ukufumana i- amplifiers eyahlukeneyo yolu hlobo lwe-eriyali, ebavumela ukuba babambe isignali yedijithali kwaye bayisasaze kwiTV.
Uluhlu lwe-eriyali ngokwayo yibroadband. Ngamanye amazwi, ezo zixhobo ziyakwazi ukufumana imiqondiso eyahlukeneyo yeemitha kunye ne-decimeter ranges. Le propati ekhethekileyo ivumela isixhobo ukubamba imiqondiso yedijithali yeTV kwifomathi ye-DVB-T2.

Igrille yasePoland ayilona khetho lufanelekileyo olusetyenziselwa ulwamkelo olude lweziteshi zeTV zedijithali. Oku kuqala ngenxa yokuba isixhobo sifuna ukulungiswa kunye nokuphuculwa ngaphambi kokuba siqalise ukusebenza kuluhlu olufunekayo.

Iimpawu eziphambili zobugcisa ze-antenna yasePoland

Uluhlu lweePoles lusebenza ukusuka kwi-40 ukuya kwi-800 MHz. Oku kukuvumela ukuba ufumane imiqondiso kwaye ubukele iinkqubo zeTV ukusuka kwitshaneli 1 ukuya kwe-20. Ngokucocwa okuncinci kunye noqhagamshelo lweamplifier, kuyenzeka kwakhona ukujonga amajelo eTV ukusuka ku-21 ukuya ku-69. Ukongeza, kuqwalaselo olusisiseko lwazo naziphi na iimodeli ze-eriyali zohlobo lwe-array, kukho ukukhulisa umqondiso ukuya kuthi ga kwi-13 decibels, njengoko. kunye ne-impedance yamaza ye-300 ohms. Imilinganiselo yezixhobo zincinci (80×60 cm), ubunzima buyi-1.5 kg. Uluhlu lwamacandelo e-eriyali xa uthenga luyamangalisa:

• iivibrators ezisebenzayo (DMV, MV);
• iivibrators (abalawuli);
• iileyili zokuqiniswa kwemigca yesiseko samaza kunye nezindlu zeplastiki;
• ukuxhoma kwe-antenna ngesibonisi;
• iibhloko zombane ophantsi;
• iimodeli ezahlukeneyo zeamplifier ekukhetheni umthengi;
• iiplagi eziqhelekileyo zoqhagamshelwano.

Iintambo ze-coaxial ezifunekayo ukuqhagamshela isixhobo kumguquleli zithengwa ngokwahlukileyo.

Isebenza njani i-antenna ye-Polyachka TV xa ifumana isignali yedijithali?

Isethi esisiseko ayithethi kusetyenziso lwezixhobo zokufumana i-10 okanye i-20 yamajelo edijithali eTV asasazwa kulo lonke ilizwe.. Kwimeko nayiphi na into, de uhlaziyo olusemthethweni lwe-antenna luvela kumenzi, kuya kufuneka uphucule ngokwakho ukuze ufezekise inqanaba lomqondiso elifunekayo. Ngokucocwa okufanelekileyo, i-grille yasePoland iphendula kakuhle kwi-long-range yolwamkelo lwesignali yedijithali. Kukho ipesenti encinci yamathuba okuba, ngenxa yoluhlu olufanayo lolwamkelo lwesignali, i-eriyali inokubamba umfanekiso ngokuyinxenye kwaye isasaze isandi ngaphandle kokuguqulwa. Nangona kunjalo, umqondiso uya kuba buthathaka, kwaye kuya kuba nzima ukuyilungisa ngokusisigxina. I-amplifier esemgangathweni ezayo kunye ne-antenna arrays ayifanelekanga ukusebenza nomabonakude wedijithali. Kufuneka iphuculwe ukuphucula umgangatho wokwamkela umqondiso. Isiphumo esihle sifezekiswa kuphela ukuba i-antenna ifumaneka kufuphi nenqaba yokuphindaphinda.

Ukukhetha i-amplifier yelattice yasePoland yolwamkelo olude lweDVB-T2

Ngaphandle kwe-amplifier, i-lattice yasePoland ayiyi kukwazi ukufumana kunye nokwenza imiqondiso engenayo yesizukulwana esitsha. I-amplifier yesiseko kwi-antenna yasePoland iveliswa ngokwahlukileyo. Kwiivenkile zerediyo ze-electronics, zingathengwa ngaphandle kwama-ruble angama-200.
Ekukhetheni i-amplifier, konke kuxhomekeke kuluphi uluhlu lwesignali umsebenzisi kufuneka alusebenzise ukufumana. Isixhobo ngasinye sikanomathotholo sesandisi-lizwi esisemgangathweni silungiswa kusetyenziswa indlela enehenjisi kwindawo ephambili ye-eriyali. Kulapho, kwindawo ephakathi kwezixhobo, apho ibhokisi encinci ekhuselweyo ibekwe. Ngokusebenzisa ibhodi efakwe kuyo, unokufezekisa uphuculo kwimpembelelo yokwamkelwa kwesignali.

Umsebenzi oyintloko we-antenna amplifiers yedijithali kukuphucula umgangatho weempawu zethelevishini ezingenayo. Nayiphi na imodeli kwiimarike ngokulinganayo ikhulisa imiqondiso yosasazo olufunyenweyo – umgangatho wabo uxhomekeke kumgama ovela kuphindaphinda oyintloko.

Ukukhetha imodeli yeamplifier ethile, kuxhomekeke kumandla kunye nomgama ukusuka kwinqaba yeTV, unokukhokelwa yitafile:

Kwiivenkile nakwiimarike zerediyo, unokufumana inani elikhulu labaguquleli be-antenna yesiPolish. Kukho iimodeli ezininzi onokukhetha kuzo. Zonke zinemilinganiselo efanayo, kodwa ziyahluka kumgangatho wokwamkela kunye namandla esignali ukusuka kwi-30 ukuya kwi-48 decibels. Zonke iibhodi ze-amplifier, kubandakanywa nezo zokufumana isignali yedijithali, zine-voltage ye-12 volts, eziyifumana kwiiyunithi zokubonelela nge-low-voltage ye-220 ukuya kwi-12 volts. Yonke i-voltage engenayo eya kwibhodi ephambili ebekwe kwi-antenna idlula kwiplagi ekhethekileyo ene-capacitor eyakhelweyo. Ngoncedo lwayo, kukho ulwahlulo kumandla kunye nomqondiso ongenayo.

Xa ukhetha uhlobo olufanelekileyo lwe-amplifier ye-antenna yoluhlu, unokuqhagamshelana nabamelwane bakho okanye ubone ukuba yeyiphi imodeli efakelwe phezu kophahla. Ukusebenzisa itheyibhile, unokubala umgangatho osondeleyo wesignali yedijithali eya kufikelela kwisixhobo sakho.

Iingxaki ezinokwenzeka xa uzama ukufumana iTV yedijithali usebenzisa i-lattice yasePoland

Iqhele ukusebenza ii-eriyali zasePoland ezinesandisi-lizwi kunye nobonelelo lwamandla lunokuba nolu kungasebenzi kakuhle kulandelayo:

• uphawu luqala ukunyamalala ngokupheleleyo;
• xa useka ukusasazwa komabonwakude wedijithali, umlinganiselo obonisa inqanaba lesignali liqala ukunyuka ngokukhawuleza ukuya kwi-100 okanye, ngokuchaseneyo, lehla kwi-0;
• kukho ukwamkelwa ekuqaleni, kodwa ekuhambeni kwexesha iqala ubuthathaka okanye iphele ngokupheleleyo;
• umfanekiso uqala ukucotha, ii-cubes zivela, isandi siqala ukubetha;
• kwiitshaneli ezingama-20 ezifumanekayo zokusasaza simahla, zi-10 kuphela eziboniswayo – kwaye nangomfanekiso ombi;
• ukuba i-antenna ibekwe kwindawo ephantsi yokuphakama ukuya kwi-2.5-3 yeemitha, ke iimoto ezidlulayo endleleni zingabangela ukuba umqondiso uqalise i-junk.

Konke oku kukhokelela kwimfuno yophuculo lokuphucula umgangatho wokwamkela nokuthintela iintlobo ngeentlobo zeengxaki.

Ukuba uvula ulwamkelo losasazo lwedijithali kwaye ubone imitha yenqanaba iqala ukunyuka kwaye iwele ngokukhawuleza, oko kuthetha ukuba ilahlekile. Ngamanye amazwi, umqondiso onjalo wedijithali ngePole awufanelekanga ukubhalwa kweekhowudi. Kule meko, izixhobo ziya kufuneka zitshintshwe.

Kufuneka ndenze ntoni ukuba igridi yasePoland ayamkeli iDVB T2?

Ukuba i-Pole ayamkeli i-DVB T2 kwaye ayifuni nangayiphi na indlela kwizicwangciso zezandla, oku akunakuba yimpazamo yeTV. Abasebenzisi abaninzi bafumanisa ukuba inzuzo esisiseko ekhoyo kwiplasma yanamhlanje kunye nezixhobo zeLCD zanele ukufikelela kwinqanaba losasazo lwedijithali. Ngokutsho kwabathengisi abaninzi, iiTV zanamhlanje ziyakwazi ukufumana umqondiso ngaphandle kokudibanisa i-antenna. Nangona kunjalo, ekusebenzeni, kubonakala ukuba umntu ode kakhulu ukusuka kwi-repeater yesignali, ngakumbi ukwamkela kuya kuba. Le meko iphawuleka ngakumbi kwimimandla esemagqagaleni yelizwe, esandul’ ukutshintshela kumabonakude wedijithali. Iinqaba eziphindaphindayo kufuneka zongeze ulwandiso ukuze abahlali basekuhlaleni babe nokufikelela umgangatho ofanayo nalawo amajelo asezidolophini anawo. Kwiimeko ezininzi, unobangela umqondiso embi xa ufumana DVB-T2 kwandiswa amandla. Umguquli okhethwe ngokungafanelekanga unokunyusa kakhulu i-output ephumayo, ekhokelela kuphazamiseko. Kukho iindlela ezine zokuyilungisa le ngxaki kunye nokufezekisa ulwamkelo olungcono lwedijithali lweTV. Ukuphuculwa kwe-antenna yasePoland ye-DVB T2: https://youtu.be/SiIg8yWLaY8

Indlela yokuqala

Ukuba umsebenzisi unombane olawulwayo, ngoko ke akuyi kubakho ngxaki ngokutshintsha amandla ophindayo. Ngokuqhelekileyo abalawuli abanjalo banolawulo lwezandla. Ukunciphisa amandla angenayo, kwanele ukuguqula izikhonkwane ezibekwe kwipaneli ephakathi ye-amplifier counterclockwise. Kule meko, i-voltage yehla ngaphantsi kwe-12 volts. Ubuncinci bomda ziivolthi ezi-2. Kuyimfuneko ukunciphisa inqanaba lomqondiso xa usasazo lweTV luvuliwe, ukuze ulandele indlela eboniswa ngayo ekudlalweni kwayo kwi-TV. Xa utshintsha umgangatho wesignali, utshintsho lwalo kumgangatho wokubonisa umfanekiso luya kwenzeka ngokulibaziseka okuncinci, ngoko kufuneka ulinde kancinane.

Indlela yesibini

Iimodeli zeTV zamva nje zineetyhuna ezahlukeneyo ezikwaziyo ukufumana umqondiso wedijithali. Kule meko, ungasebenzisa iqhinga elincinci ukunciphisa kakhulu amandla anikezelweyo kwi-adapter ye-antenna. Oku kuya kusebenzisa izibuko le-USB elivela kwiTV. Ukwenza oku, kuya kufuneka wenze la manyathelo alandelayo:

1. Thatha intambo yeTV uze ufake iplagi yeTV.
2. Thenga iadaptha ekuvumela ukuba unikeze amandla kwi-eriyali ngezibuko le-USB.
3. Qhagamshela iadaptha kwizibuko kwaye uhambise intambo yamandla kwi-antenna booster.

Ixabiso le-adapter enjalo ye-USB yamandla ayidluli kuma-ruble angama-300. Ifumaneka phantse kuzo zonke iivenkile ze-elektroniki kwaye ayifuni izakhono ezikhethekileyo zokufakela.

Indlela yesithathu

Ukuba kukho i-set-top box yokufumana i-TV yedijithali ekhaya, ungalawula amandla asuka kuyo ngokuthe ngqo kwi-eriyali yoluhlu lweamplifier. Kule meko, endaweni ye-volts eyi-12 efakiweyo, i-amplifier ephakanyisiweyo ebekwe phezulu kwi-eriyali ayiyi kufumana ngaphezu kwe-5 volts ukusuka kwi-set-top box ngokusebenzisa intambo kamabonwakude edityaniswe ngaphambili.
Okufuneka ukwenze kukulandela amanyathelo ama-3 alula:

1. Lungisa iplagi yeTV eqhelekileyo kwintambo yeTV.
2. Qhagamshela ibhokisi yokuseta kwiTV.
3. Vula i-set-top box menu kwaye ukhethe into apho amandla e-eriyali avuliwe.

Ngokuxhomekeke kwimodeli yebhokisi yokumisela, imenyu kunye nendlela yokuvula ii-eriyali zinokwahluka, ngoko ke kufuneka ubhekisele kwimiyalelo efike kunye nesixhobo.

Indlela yesine

Unokuzama kwaye ucime ngokupheleleyo amandla kwi-eriyali. Kwezinye iimeko (kuxhomekeke kwindawo ye-eriyali kunye ne-repeater), isibonakaliso sinokuza ngolu hlobo. Ukwenza oku, kuya kufuneka wenze la manyathelo alandelayo:

1. Thatha iseti yeTV.
2. Lungisa intambo yeTV ngeplagi.
3. Qhagamshela intambo kwi-set-top box kunye ne-eriyali ngqo ngaphandle kwamandla.

Le ndlela ayisoloko isebenza, njengoko amandla anokuba ngu-zero ngokupheleleyo, kwaye umqondiso uya kuphelelwa ukusuka mzuzu itshaneli yeTV ivuliwe.

Ukunyuka kwe-antenna

Omnye umbuzo odumileyo phakathi kwabasebenzisi apho kubhetele ukubeka kunye nendlela yokufaka ngokufanelekileyo igrille yasePoland. Okokuqala, kufuneka ufunde ngokucophelela ulwazi malunga nalo mbandela kwimiyalelo ezayo kunye nezixhobo, ezibonisa iiparitha eziphambili zokubeka isixhobo. Isixhobo esisisiseko sayo nayiphi na imodeli ye-antenna inemasti ekhethekileyo yokulungisa i-eriyali. Ukukhusela i-eriyali kwimasti, kuya kufuneka usebenzise isigcini esibandakanyiweyo. Oku kunokwenziwa ngokukhawuleza emhlabeni kude kube ngumzuzu apho i-eriyali ibekwe kumphakamo ofunekayo.

Ngaphambi kokuba uphakamise i-antenna mast kwaye uyilungise, umzekelo, phezu kophahla, kuya kufuneka ulungiselele intambo ye-antenna, kunye nentambo yamandla, eyona nto idibaniswe ngokukhawuleza xa ifakwe kwi-mast yesixhobo.

Ngokumalunga nokukhethwa kobude kunye nendawo ye-digital receiver receiver ngokwayo, iiparitha apha zihlala zizimeleyo kwaye zixhomekeke apho umsebenzisi ahlala khona. Xa ufaka i-Pole, kuyacetyiswa ukuba unamathele kwi-algorithm elandelayo:

1. Qhagamshela umamkeli womqondiso kwiTV.
2. Faka i-voltage kwi-amplifier yomqondiso, nayo iqhagamshelwe kwi-eriyali.
3. Misela indawo xa uthelekisa neyona nqaba kamabonwakude ikufutshane.
4. Jika uluhlu lwe-eriyali ukuya kwinqaba yeTV.

Ukuphucula umgangatho wokwamkela, nyusa kancinane umamkeli womqondiso kwimasti. Okwangoku xa umfanekiso kunye nesandi zikumgangatho ophezulu, kufuneka ulungise imast nge-antenna kule ndawo.

Emva kokuba umsebenzisi egxininise zonke iingcingo ukwenzela ukuba iyunithi ivalwe ngaphandle, kufuneka ifakwe ecaleni komthungo ngeglue engenamanzi. Oku kuya kukuvumela ukuba ufezekise umgangatho wokufumana umqondiso ophezulu, unqanda ukuba nokwenzeka kokufuma ngaphakathi. I-antenna yasePoland iyakwazi ukufumana amaza oluhlu olumisiweyo kuphela kwicala elinye. Xa ujikela i-eriyali ukuya kwinqaba, iya kufumana kuphela isignali engenayo ngqo. Ukuphucula umgangatho wokwamkela, ukuba kukho iinqaba ezininzi zikamabonwakude ezijikelezayo, kuyimfuneko ukufakela abamkeli abanoluhlu olufanayo kubo. Bukela ividiyo malunga nendlela yokuseta i-antenna ye-Polack yolwamkelo olusebenzayo lwe-TV yedijithali: https://www.youtube.com/watch?v=2nPuYzAL0ug Uphuculo, I-eriyali elungelelaniswe ngokufanelekileyo kwaye ilungisiwe yohlobo lwasePoland yenza umsebenzi oncomekayo wokufumana usasazo lwedijithali lwale mihla. Ukuphuculwa kwesi sixhobo kufumaneka kuye nawuphi na umsebenzisi kwaye akufuni mzamo omkhulu okanye utyalo-mali olukhulu lwemali.