Ungakhetha kanjani nokuthi ungabheka kanjani isiguquli sesathelayithi

Isiguquli siyingxenye ebaluleke kakhulu
kumabonakude we- satellite , ikhwalithi yesiginali incike kuyo, i-frequency kanye ne-polarization converter futhi ingabamba ama-frequencies ahlukene. Kulesi sihloko sizokhuluma ngencazelo yalo nokuthi ungayikhetha kanjani, yini okufanele uyinake. [i-id yamagama-ncazo = “okunamathiselwe_3541″ align=”aligncenter” wide=”647″]
Amakhanda esathelayithi[/caption]

Yini isiguquli sesathelayithi futhi sisebenzela ini

Isiguquli sesathelayithi sihlinzeka ngokwamukela isignali ebonakala kusukela phezulu kothi bese idluliselwa ngendlela ekhulisiwe ukuya kushuna we-TV yesathelayithi. Lena indlela eyinkimbinkimbi ehlanganisa imithetho eyisisekelo ye-physics. Ungathenga isiguquli esinjalo ngentengo ethengekayo.

Isici esiyinhloko sesiguquli umsindo owengeziwe, olinganiswa ngama-decibel. Uma kunomsindo omncane, isithombe esiku-TV asihlanekezelwe kakhulu.

Kwisayensi, isiguquli sichazwa njengesamukeli esicubungula isignali yesathelayithi. Eqinisweni, kunamadivayisi amabili ebhulokhi elilodwa le-monolithic. Idivayisi yokuqala ikhulisa isignali etholwe kusathelayithi. Yilapho izinga lomsindo owengeziwe lidlala indima enkulu. Ngamanani aphansi, kuzoba nokuphazanyiswa okuncane kakhulu, – 0.3 – 0.5 dB.

Igama elithi LNB noma ibhulokhi yomsindo ophansi nayo ihlobene nesiguquli sesathelayithi.

Idivayisi yesibili iguqula amaza amaza. Ngosizo lwabo, isignali idluliselwa kumamukeli noma ku-TV ngokufinyelela kude. Isitsha sesathelayithi se-Offset silungele ukudluliswa kwesignali. Nansi incazelo eyisisekelo yokuthi konke kusebenza kanjani:
Isiguquli senza isignali eyamukelwe ibe namandla. Lokhu kusiza ukunxephezela ukulahlekelwa
kukhebuli exhuma uthi kumamukeli. Umamukeli wengeza owayo umsindo esignali. Banamandla njalo. Isignali yesathelayithi esuka ku-antenna iyodwa ayinamandla, ngakho iba buthakathaka ngaphakathi kwekhebula, yingakho idinga ukukhuliswa. Nokho, idivayisi ingenisa owayo umsindo esignali, ngakho kubalulekile ukuthi zincane. Isiguquli singathengwa emikhiqizweni ehlukene. [i-id yamagama-ncazo = “okunamathiselwe_3544″ align=”aligncenter” wide=”
Umgomo wokusebenza kwesiguquli se-antenna kokuphumayo okubili [/ amazwibela] Idivayisi iphinda iguqule imvamisa. Lesi isici esibaluleke kakhulu. Kusuka kububanzi obujwayelekile, isignali iya kububanzi be-L. Lena idivayisi eyinkimbinkimbi, equkethe izingxenye eziningana. Umklamo wayo uhlanganisa i-irradiator, i-waveguide kanye nebhodi lokuguqula ngokwayo. [i-id yamagama-ncazo = “okunamathiselwe_3540” align = “aligncenter” wide = “450”]
I-Converter chip [/ amazwibela] I-irradiator iwuhlobo lwe-antenna yesibili ecosha amasiginali athunyelwe kowokuqala. Isiguquli sikhulisa futhi siguqule isignali ye-high-frequency ibe isignali yefrikhwensi ephansi, isibonelo, isignali ye-12000 MHz iguqulwa ibe imvamisa elingana no-1250 MHz. Yenza umsebenzi wokuqinisekisa ukuthi isignali ayinciphisiwe ngokuphelele kukhebula. Ngokufanelekile, amasignali ekhwalithi ephezulu ekuchazeni okuphezulu atholwa ku-TV. Isiguquli siphinde sishintshe i-polarization. Iziteshi azinawo amafrikhwensi ahlukene kuphela, kodwa futhi nama-polarization ahlukene. Ezinye ziphenduka ziqonde, ezinye zivundlile. Kubalulekile ukuthi isiguquli siphendulwa kanjani. Izikhombisi-ndlela ziyahlukahluka ezindaweni ezihlukene ebusweni bomhlaba.

Yiziphi izinhlobo ze-satellite dish converters ezikhona

Isiguquli, esibizwa kahle kakhulu nge-LNB, siyadingeka ukuze kuguqulwe ifrikhwensi yegagasi ethi “Ku” (10 … 13 GHz) noma “C” ububanzi (3.5 … 4.5 GHz) ukuya ku-0.95 … 2.5 GHz, okuyinto kwenza kube nokwenzeka ukuthi isignali idluliselwe ngokulahlekelwa okuncane kwekhebula kuze kufike kumamukeli. Lokhu kwenza kube nokwenzeka ukusebenzisa ikhebula le-coaxial elingabizi futhi linikeze ubude obufika kumamitha angu-20-30 ukuze isignali ingalahleki. K\ Zonke iziguquli ziyehluka ngomsindo. Ukuhlukahluka kwabo kukhulu ngenye indlela. Kukhona iziguquli ezilandelayo:

1. Isiguquli se “C”.
2. Converter for “Ku”.
3. Universal”.

[i-id yamagama-ncazo = “okunamathiselwe_3536″ align=”aligncenter” width=”250″]
Isiguquli se-antenna yebhendi ye-LNB C yebhendi ye-C[/caption] Kuyadingeka ukunquma ukuthi isetshenziswa kuliphi ibhendi, “Ku” noma “C”. Umehluko omkhulu phakathi kwamadivayisi usekusebenzeni kwawo kumafrikhwensi ahlukene. Isiguquli sefrikhwensi sisebenza ezimeni zezulu ezahlukahlukene.

Umgomo wokusebenza kwesiguquli sesathelayithi

Isiguquli siqoqa amagagasi, siwaguqule abe amasignali emvelaphi kagesi, edlulisela isignali kumamukeli. Isiguquli se-LNB sibekwe endaweni okugxilwe kuyo uthi, lapho amagagasi egxile khona. Isignali ikhuliswa kusiguquli, iguqulelwe kufrikhwensi ephansi. Ukuze udlulise isignali isuka ku-C noma i-Ki iye ku-L-band, udinga i-oscillator yasendaweni ekhiqiza isignali yomsakazo. I-mixer isiza ukuthola isignali yesithathu, okuwumehluko wezokuqala ezimbili. Ngenxa yalokho, kuvela.

Ku-Ki range, ngendlela ephambene, imvamisa ye-oscillator yendawo ibalwa kusukela ekuvaleni kwesignali etholwe ku-satellite. Kukhona nesinye isici. Awukwazi ukudlulisa yonke i-Ki-band ku-L-band. Kungenzeka ukuthi isiguquli sine-oscillator eyodwa yasendaweni futhi ayimbozi yonke i-Ki-band, noma isignali yesathelayithi ingena ebhendini ye-L kuphela kancane, okungaphansi noma ngaphezulu kobubanzi kuhilelekile. Uhlobo lwesibili lweziguquli luyindawo
yonke, inama-oscillator endawo angu-2, eyesibili ehlanganisa phezulu kwebhendi ye-Ku. Ububanzi bushintshwa kusetshenziswa ukhiye we-elekthronikhi olawulwa isignali ekhethekile. Ngaphakathi kwesiguquli kunesakhiwo sensimbi. Ukugcwaliswa kwedivayisi kufihlwe kukesi lensimbi, lapho okukhiphayo kwesixhumi sika-F kufakwa khona. Isiguquli singaba nenani elihlukile lokuphumayo. Ngezinye izikhathi inani lifinyelela ku-8. [i-id yamagama-ncazo = “okunamathiselwe_3549″ align=”aligncenter” width=”552″]
Isiguquli sesathelayithi semiphumela engu-2 no-8[/caption] Lokhu kulula kakhulu ukusetshenziswa kwansuku zonke. Kwesinye isikhathi kungase kube namashuna amaningana akuvumela ukuthi uthuthukise isiginali kuma-TV amaningana. [i-id yamagama-ncazo = “okunamathiselwe_3538″ align=”aligncenter” wide=”283″]
Isiguquli sesathelayithi yomhlaba wonke[/caption]

Ungasihlola kanjani isiguquli ukuthi siyasebenza yini

Kulula kakhulu ukuhlola isiguquli ukuthi siyasebenza yini. Uma unezinkinga ngendlela i-TV ebona ngayo isiginali, udinga ukubona ukuthi ingabe indaba ikusiguquli ngempela yini. Okokuqala udinga ukuhlola ikhebula elisuka kumamukeli liye othini ngeso, uma liphukile noma yikuphi. Uma ikhebula liqinile, udinga ukuhlola ikhanda lesitsha, khona-ke othintana nabo ngezintambo, kukhona inketho elula, okungukuthi, shintsha leli khanda futhi ubone ukuthi isignali ishintshile. Khona-ke ungaqonda ukuthi imbangela yenkinga iku-converter ephukile noma kwenye i-node. Ungakhetha kanjani ikhanda lesathelayithi futhi uhlole isiguquli sesitsha sesathelayithi ukuze sisebenze, iziguquli zesitsha sesathelayithi ezinemiphumela emibili, emithathu kanye nemine: https://youtu.be/s6IW8HPgTEE

Ungakhetha kanjani i-LNB, ukuthi yini okufanele uyibheke

Inombolo yomsindo iyipharamitha eyinhloko yokukhetha isiguquli. Kubalulekile ukucabangela lapho ukhetha ububanzi bemvamisa, umsindo wesigaba, ukusetshenziswa kwamanje, i-polarity. Izingxenye ezibaluleke kakhulu ziyisibalo somsindo kanye nokuzuza. Ngendlela enhle, isibalo somsindo kufanele siboniswe emaphaketheni. [i-id yamagama-ncazo = “okunamathiselwe_3548” align = “aligncenter” wide = “512”]
Ukucaciswa[/caption] Uma kungacacisiwe, ungayithengi idivayisi. Ngesikhathi esifanayo, ngisho ne-coefficient ephansi ayiqinisekisi ukuthi isiguquli sizoba sekhwalithi ephezulu. Le parameter ihlolwa elabhorethri kuphela. Ngakho-ke, kungcono ukuthenga amadivaysi kuphela kulezo zindawo ezihloliwe futhi eziye zakwazi ukunikeza i-akhawunti enhle yazo. I-universal converter ingathengwa ngokushibhile ku-inthanethi nasezitolo zezingxenye zomsakazo. Lena inketho engcono kakhulu. Ungasikhetha kanjani isiguquli sesathelayithi: https://youtu.be/nP7UpiEubro

Amamodeli Akhethekile

Isiguquli sesitsha sesathelayithi esivela ku-Tricolor sidumile ngenxa yokuthembeka kwaso, futhi ngaphandle kwalokho, ungasithenga ngentengo ethengekayo. Ngeke kubize, kodwa kuzonikeza abanikazi bendlu isignali yekhwalithi ephezulu. [i-id yamagama-ncazo = “okunamathiselwe_3542” align = “aligncenter” wide = “600”]
Ikhanda lesathelayithi elivela ku-Tricolor [/ amazwibela] Ithelevishini yesathelayithi ye-ALYNO ine-converter ehlanganisiwe ye-C + Ku esekelwe kuziguquli ezimbili. Inokukhipha okuncikile kokuthi “I-Ferret igxile ku-Twin-Twin”, ehlinzeka ngokwamukela isignali njalo ezinhlotsheni ezimbili ngesikhathi esisodwa: C kanye no-Ku. Isebenza kuphela nge-passive multiswitch 4/2. Yenzelwe ama-antenna. Izigqoko ze-polyethylene. I-General Satellite GSLF-51E converter enobubanzi be-waveguide: 40 mm (okujwayelekile); uhlobo lwesixhumi: 75 F-uhlobo luyathandwa phakathi kwababhalisile. Isiguquli se-Galaxy Innovations GI-301 isiguquli esiyisiyingi se-polarization. Kulula kakhulu ukuyisebenzisa ekuphileni kwansuku zonke.

Ukuklama nokufakwa kokuthile

Amaza omsakazo we-electromagnetic awela esibukweni. Njengoba ukuma kwayo kunesimo se-sphere, isignali, ewela endaweni yesibuko, ibonakala kuphela endaweni eyodwa, kwakhiwa ugongolo olugxile endaweni eyodwa. Idivayisi edingekayo ibekwe “kugxilwe” – i-converter ye-satellite ngokwayo. Lo msebe wehlela phezu kwakhe. Izakhi eziyinhloko zesiguquli yi-irradiator, i-waveguide lapho isignali ihamba khona, iyunithi ye-electronic eguqula amagagasi abe ama-pulses. Isiguquli siguqula imvamisa, i-polarization, inikeza isignali yekhwalithi ephezulu. Idizayinelwe ukubuka i-TV ngekhwalithi ephezulu.

Amaphutha lapho ukhetha futhi ufaka, ukuthi ungawagwema kanjani

Izinga lecala livame ukukhethwa ngendlela engafanele. Indawo yokusebenza – umgwaqo. Ngesikhathi sokusetshenziswa, idivayisi ithintwa ukushintsha kwezinga lokushisa. Ngakho-ke, umzimba wedivayisi kufanele ube sezingeni eliphezulu. Isembozo selanga esikhiphekayo kumele simelane nemisebe. Ngakho-ke, kufanele futhi ukhethe impahla yekhwalithi ephezulu.

Okubalulekile! Nganoma yikuphi ukucindezeleka kwedivayisi, umswakama womkhathi uzofika lapho, okuzoholela ekuqhekekeni.

Umbala womzimba akufanele ukhanye, ngaphandle kwalokho uzoheha izinyoni ezizochoboza ipulasitiki ekhanyayo.
Ngaphambi kokusetha, kubalulekile ukubona ukuthi idivayisi ikwazi kanjani ukusebenza.

Okubalulekile! Idivayisi esebenzayo ibonisa isignali ngisho noma
uthi ungashunwanga kusathelayithi .

Imibuzo nezimpendulo

Isiguquli noma Isiguquli? Kulungile: isiguquli, futhi kunoma yiliphi inani. Lokhu kuhambisana nemithetho yolimi lwesiRashiya nezilimi zakwamanye amazwe.
Isiphi isiguquli esifanele ukuthola i- MTS TV ? Impendulo: ukuba nomugqa we-Ku-band polarization. Izosebenza ngokuphelele.
Ungathenga malini isiguquli sesathelayithi? Idivayisi ingathengwa ngentengo yama-ruble angama-350. Isiguquli singenye yezingxenye eziyinhloko zethelevishini yesathelayithi. Iguqula imvamisa, iguqule i-polarization. Ngakho-ke, kubalulekile ukuthenga ikhanda elifanele, elinomsindo omncane futhi lifanele uhla oluthile. Ngakho-ke, i-converter kufanele ikhethwe ngokucophelela kakhulu.