Inhloso, ukukhethwa kanye nokusetshenziswa kwe-multiswitch yesitsha sesathelayithi

Isikhathi
sikamabonakude wesathelayithi siya ngokuya siphela, sivula amathuba amasha ethelevishini ye-inthanethi. Nokho, akuwona wonke amaphuzu emhlabeni ane-Inthanethi manje esizindeni somphakathi. Ukuze unikeze indlu enkulu ngesathelayithi nesignali yasemhlabeni, i-multiswitch isetshenziswa. Ake sihlaziye ngokuningiliziwe idivayisi yayo, kungani idingeka nokuthi ixhumeke kanjani.

Kuyini futhi kungani udinga i-multiswitch yezitsha zesathelayithi

I-multiswitch idlala indima yohlobo “lokulinganisa” kanye “nokusabalalisa” kwesathelayithi nesiginali yasemhlabeni. Eqinisweni, lena idivayisi encane eyenza impilo yabathandi be-TV ibe lula. [i-id yamagama-ncazo = “okunamathiselwe_3889″ align=”aligncenter” wide=”1024″]
Multiswitch yezitsha zesathelayithi[/caption]

Kungani udinga

Ukuze uqonde ukuthi kungani udinga i-multiswitch, udinga ukuxazulula imfumbe eyodwa: ungabanikeza kanjani ababhalisile bakho ngomabonakude wohlobo lwesathelayithi ngaphandle kweziphazamiso. Ngesikhathi sokuthandwa okuphezulu kwethelevishini yesathelayithi
, lo mbuzo onzima waphakama kubasebenzisi . Inketho yokuqala nelula kakhulu isobala: iklayenti elilodwa =
uthi olulodwa/sathelayithi. Ifomula ilula. Kodwa-ke, kanye nenketho elula, kuphakama inkinga elula: uma kukhona amafulethi angama-48 endlini, futhi ifulethi ngalinye lifuna ukufaka i-TV yesathelayithi, khona-ke kuzoba nama-antenna angama-48 ophahleni lwendlu ehambisa idatha. Lokhu kusho ukuthi uphahla luzombozwa ngokuphelele ngama-transmitters. Kwezinye izindawo akulula, kanti kwezinye akuvunyelwe ngokuphelele. Ukuphazamiseka okuyinhloko inqwaba yezintambo ezivezwa endaweni yangaphandle futhi zingamane zebiwe ophahleni. Inketho yesibili ukufaka
isiguquli sesathelayithingenani lemiphumela elilingana nenani lababhalisile. Nokho, lapha umuntu kufanele acabangele hhayi kuphela bonke ababhalisile endlini, kodwa futhi abangaba ababhalisile. Futhi emakethe manje kunzima ukuthola isiguquli esinemiphumela engaphezu kuka-4. [i-id yamagama-ncazo = “okunamathiselwe_3892” align = “aligncenter” wide = “552”]
Isiguquli sesathelayithi semiphumela engu-4 no-8 [/ amazwibela] Inketho yesithathu ukuhlukanisa isiginali yesiguquli. Okokuqala, kufanele ukhohlwe ukuthi izinga lesiginali ye-RF lizokwehla ngenqubo yokuhlukanisa ngakunye. Kubalulekile ukuthi isihlukanisi sisetshenziswe kuphela ngokusekelwa okukhethekile kwe-SAT PC, ububanzi bayo obusuka ku-950 kuya ku-2150 MHz, kuhlanganise nokudlula kwamandla. Isiguquli se-SAT singesamadivayisi asebenzayo, wona ngokwawo aqonda indawo yokusebenza ye-polarity. Inikwa amandla amandla omamukeli noma omunye umthombo. Esimeni esinjalo, isici esithile sokuncika kwababhalisile siyakhiwa. Uma umqashi othile wendlu ethumela i-voltage enkulu ekuguquleni (18 Volts), khona-ke omakhelwane bakhe, abane-polarity ehlukile (isibonelo, i-12 Volts), ngeke bakwazi ukwenza lokhu futhi bazosala ngaphandle kwesignali. Ngezinye izikhathi ukunganaki okunjalo kuyamukeleka. Esimeni esinjalo, ungasebenzisa isihlukanisi esisebenzayo sesignali yesathelayithi yefrikhwensi ephakathi. Ihluke kancane kusihlukanisi esijwayelekile – esisebenzayo sinxephezela ukwehla kwenkomba yesignali ngesikhathi isignali idlula ikhebula. Iphinde idale umehluko omkhulu phakathi kwezindlela zokuphuma. Isebenza ku-voltage ye-12 kuya ku-18 volts. Amandla angenzeka kuphela ngosizo lomamukeli onemvamisa esekelwayo ye-950 – 2400 MHz. Zonke lezi zinketho ezingenhla zenziwe ngabamele izinkampani zesathelayithi, kodwa akukho neyodwa yazo eyaphumelela. Phakathi nenqubo yokucabanga, i-Multswitch yasungulwa. Idivayisi yathathwa njengesixazululo sendawo yonke ngefomethi “yonke isebenza ebhokisini elilodwa”. Kodwa-ke, lokhu kusebenza kuphela kuma-transmission amancane – isignali yasemhlabeni noma isignali yesathelayithi. [i-id yamagama-ncazo = “okunamathiselwe_3888″ align=”
Umdwebo wokuxhumeka kwe-Multiswitch [/ amazwibela]

Idivayisi ye-Multiswitch

I-Multiswitch isebenza njengeswishi yendawo yonke. Ihlinzeka ngokusebenzisana kwabamukeli ngemiphumela ehlukene kusiguquli, noma ngeziguquli ezihlukene. Umsebenzi oyinhloko ukudala zonke izimo ezidingekayo ukuze umamukeli asebenze. Uma iwela emfudlaneni wama-volts angu-13, i-multiswitch izovele iyidlulisele ku-port ekhethekile yala mandla, komunye umfudlana – enye ichweba. Izimfanelo eziwusizo zedivayisi:

1. Ngayo , ungakwazi ukwenqaba i-polarity eyodwa noma ukugeleza okukodwa . Obhalisile ngamunye oxhunyiwe uzoba nayo yonke imingcele edingekayo ukuze asebenze. Izoqinisekisa ukuthi umamukeli uxhunywe kokufaka okulungile, futhi ngokufanele kusiguquli esifanele. Lokhu kusebenza kukho kokubili ukungena nokuphumayo.
2. Iswishi ye-TV ithatha ingxenye eyengeziwe yasemhlabeni yesiginali , ebangeni elingu-5-862 MHz. Konke ukugeleza kuya kobhalisile ngekhebula eyodwa, azikho izintambo ezingaphezulu! Manje udinga nje ukufaka i-diplexer ohlangothini lwabathengi – lokhu kuzokuvumela ukuthi uthole amachweba amabili azimele we-satellite ne-TV. [i-id yamagama-ncazo = “okunamathiselwe_3887″ align=”aligncenter” width=”672″] I-diplexer kanye ne-multiswitch kuhlangene kukuvumela ukuthi wamukele kanyekanye amasignali e-TV yesethelayithi nekhebula[/caption]
3. Ikhulula uphahla kanye nama-facade ezakhiwo zokuhlala , iqinisekisa ukwamukelwa kwesignali kubo bonke abahlali.

Ungakhetha kanjani ukuthi yiziphi izinhlobo zedivayisi ezikhona

Lapho ukhetha, kufanele uqale ezintweni ezimbili: inani lamaphoyinti okuxhumana nokuthi akude kangakanani nothi. Ngokwezici eziyinhloko, i-multiswitch ihlukaniswe yaba:

1. Ukunikezwa kwamandla: kusuka ku-220 V nokusuka ku-18 V.
2. Inombolo etholakalayo yezimbobo zokufaka nokuphumayo.

Inani lamaphoyinti lizokuvumela ukuthi uqonde ukuthi mingaki imiphumela oyidingayo ukuze umunce isignali ngokuphelele.

I-Cascadable noma itheminali

Ibanga eliya ku-antenna lithinta ngqo uhlobo oludingekayo lwe-multiswitch: i-cascade noma i-terminal.

I -Cascaded isetshenziswa kabanzi ezakhiweni ezihlala amafulethi, amahhovisi ezinkampani kanye nezakhiwo zokuhlala ezinenani elikhulu labantu. Lolu hlobo lwedivayisi aludingi amandla futhi lwengezwa ngeketango endaweni yokusabalalisa isignali (ngokuvamile yonke indawo esakhiweni). Kubalulekile ukuthi amadivayisi axhumeke komunye nomunye. Uma kudingekile ukuxhuma i-amplifier yesignali, i-injector yamandla ixhunyiwe, edinga i-AC outlet enamandla angu-220 volts.
Isikhumulouhlobo lwe-multiswitch lunconywa ukuthi lufakwe ezindlini ezizimele noma emakamelweni amancane. Lokhu kungenxa yebanga eliseduze lothi. Idivayisi ifakwe ebhodini lokushintsha, ngoba kulapho izintambo ezisuka ku-antenna zingena khona nalapho izintambo ziya kumamukeli. Itheminali ye-multiswitch idinga ugesi. Okusho ukuthi, ngaphakathi kwe-radius yemitha kufanele kube nesokhethi ene-AC supply yama-volts angu-220.

Ama-multiswitches asebenzayo futhi angenzi lutho

Kukhona futhi izigaba ezifana namamodeli asebenzayo kanye ne-passive multiswitch. Imodeli esebenzayo ihlanganisa i-amplifier yesignali ehlanganisiwe. Lesi sici siyadingeka uma ufuna ukuxhuma uthi olusemoyeni. Ukuze kube lula ukukhetha, amanye amabhrendi alebula imikhiqizo yawo ngale ndlela elandelayo:

1. I-P – yenza.
2. A – esebenzayo.
3. U – uhlobo lomhlaba wonke.

Esigabeni sokwenziwa, lokhu okungenzeka akuhlinzekiwe. Ukuze wenze lokhu, i-amplifier eyengeziwe yohlobo lwangaphandle ixhunyiwe, okuzodingeka ithengwe ngokwehlukana. Ama-multiswitches asebenzayo futhi asebenzayo ahlukile komunye nomunye kumapharamitha wesiginali yokufaka: i-passive izonikeza inkomba ephansi.

Iyini i-multiswitch, inhloso kanye nokusetshenziswa kwedivayisi:

https://youtu.be/cggC3FLtdaE

Uxhumano nokusetha

I-multiswitch ifakwe izixhumi zokufaka (ezidingekayo
kuziguquli ), kanye nokuphumayo (kwabamukeli). Inombolo yezixhumi eziphumayo ilingana nenani labamukeli abaxhunyiwe. Inombolo yabamukeli ihambisana nenani lamaklayenti axhunyiwe. Ukuqonda ingqikithi yomsebenzi wezixhumi zokukhiphayo kunzima kakhulu. Isiginali ye-Ku-band ifakwa kuyo, ehlukaniswe ngezinhlobo ze-polarization kanye nama-sub-band amabili. Lokhu kusho ukuthi ukuze uthole i-spectrum egcwele yokusakaza kusuka kudivayisi eyodwa yokudlulisa (kithi, isathelayithi), kuzodingeka usebenzise okokufaka oku-4 kokushintsha, ukuxhuma kokuphumayo kwesiguquli okune (kwezinye izimo, iziguquli ezihlukene). [i-id yamagama-ncazo = “okunamathiselwe_3893” align = “aligncenter” wide = “425”]
Umdwebo wezintambo we-multiswitch yesitsha sesathelayithi yemiphumela engu-8 [/ amazwibela] Isignali yobubanzi Ukusuka ezingeni kuya kumabhande amancane ayihlukaniswa futhi inikezwa wonke. Izinketho zezilungiselelo:

1. Uma i-multiswitch inezixhumi zokufaka ezisuka koku-1 kuye kwezi-4 zokuxhuma kusiguquli, inani le-DiSEqC kufanele livalwe, noma Livinjwe.
2. Uma > okokufaka okungu-4, i-DiSEqC ibekwa endaweni ½ noma 2/2, njll.
3. Ukuze ushintshe ipharamitha engu-22kHz kuzilungiselelo ze-DiSEqC kumamukeli, le nketho kufanele ibe khona.

Izinhlobo zokumaka ezifakwayo:

1. A – IBHANDE ELIPHANSI (ibhande elincane eliphansi) – 13 v / oHz.
2. B – IBHANDE ELIPHANSI (ibhande elincane eliphansi) – 18 v / 22kHz.
3. I-C – HIGT BAND (i-subband ephezulu) – 13 v / oHz.
4. D – IBHANDE ELIPHANSI (ibhande elincane elingaphansi) – 18 v / 22kHz.

Okunye ukuxhumana kuphinda isikimu esishiwo. [i-id yamagama-ncazo = “okunamathiselwe_3881″ align=”aligncenter” width=”500″]
Uhlelo lokuxhuma i-multiswitch yesitsha sesathelayithi[/caption] Uthi oluvamile lwasemhlabeni kufanele luxhunywe kusixhumi ngombhalo othi “Terr”, noma isignali evela kukhamera yevidiyo ngaphandle. Ukuxhuma i-radial multiswitch, uhlelo olulandelayo lusetshenziswa:
Isibalo sibonisa imodeli ye-MR516. Ngokusekelwe egameni kufomula, uhlelo luzoba ngu-5 * 16. Kuzoba khona okokufaka okungu-5 (1 kwe-terrestrial TV), kanye noku-4 kokudluliswa kwesathelayithi. 4 ngoba i-polarization ngayinye inezigaba ezimbili.

Iseluleko! Kunconywa ukusebenzisa imvamisa engu-11700 MHz njengomngcele wesihlukanisi sebanga eliphansi nelingaphezulu. Yilesi sikhombisi esiwuhlobo lwesihlukanisi.

Ngemva kwe-antenna esemoyeni, i-TV range amplifier ifakwa. Imvamisa, ukwesekwa kwe-TV kuma-multiswitch akusebenzi, ngaphandle kokukhulisa. Lokhu kungenxa yomehluko ekwamukelweni kwesignali esemoyeni, ukusetshenziswa kabi okuzoholela ekudidekeni. Isibalo esingezansi sibonisa igrafu yokuxhuma idivayisi kuziguquli ezimbili ezivela kuzimpondo ezihlukene kanye neyodwa yasemhlabeni:
Isibalo esingenhla sibonisa ukuthi isiguquli se-quad siphuma kanjani esitsheni ngasinye. Ekugcineni, kuvele okokufaka okungu-8 kwesathelayithi, imiphumela engama-32 kanye nokungu-1 okujwayelekile kwesignali yasemhlabeni enokukhulisa okokufaka kwe-TV. I-cascade multiswitch ixhunywe kanje:
Imodeli ye-MV516 ifaka i-die-cast metal house evikela isakhiwo ekuphazamisekeni kwangaphandle kwe-electromagnetic. Kukhona kokubili izindlela zokungenzi lutho nezisebenzayo ze-TV yasemhlabeni. Ungawaxhuma kanjani ama-TV ayi-10 othini olulodwa usebenzisa i-multiswitch: https://youtu.be/BjFxA5Fv_IM

Imibuzo Evame Ukubuzwa Nezixazululo

Umbuzo wokuqala ovame ukubuzwa uthi: “Hlobo luni lwesignali i-multiswitch engadlulisa?”. Impendulo: ngaphezu kokuguqulwa kwesathelayithi okusobala, i-multiswitch iphinda iphakele izikhulisa-msindo ezisemoyeni ngokufaka i-TV.
Umbuzo wesibili uthi: “Kungani ngingakwazi ukusebenzisa umamukeli?”. Impendulo: ungakwazi, kodwa le nketho ayifaneleki amakamelo lapho kungavunyelwe ukufaka abamukeli abangaphezu kuka-3. Ungakhohlwa ukuthi isignali ihlukaniswe, ngaleyo ndlela idale umphumela wezandla eziboshwe.
Umbuzo wesithathu uthi: “Nginganciphisa kanjani umthwalo ongenayo kumamukeli ngokwami?”. Impendulo: Ukuze wenze lokhu, kunconywa ukuthenga i-multiswitch, lapho ugesi ohlukile usuvele ufakiwe.
Umbuzo wesine: “Ngingasebenzisa i-multiswitch, i-DiSEqC kanye ne-diplexer ohlelweni olulodwa lwesathelayithi?”.Impendulo: “Ubuchwepheshe besimanje benza kube nokwenzeka ukwenza lokhu ngaphandle kwezinkinga.”
Umbuzo wesihlanu: “Iyiphi i-converter okufanele ngiyithathe yesathelayithi yaseYurophu?”. Impendulo: “Universal”.
Umbuzo wesithupha: “Ngifuna ukuxhuma abemukeli abangu-2 esitsheni esisodwa. Isiphi isamukeli esingcono kakhulu ongasithenga? Impendulo: cha, udinga isiguquli.
Umbuzo wesikhombisa: “Kuyini ukushintsha?”. Impendulo: DiSEqC. Umgomo oyinhloko wedivayisi nomqondo wokusebenza kwe-multiswitch ulula kakhulu: ama-antenna ambalwa ukuze abe nabasebenzisi abaningi. Futhi ngempela kunjalo. Indawo eyodwa encane ingangena esikhundleni senqwaba yamapuleti ensimbi, futhi ilinganise ukungezwani kwezindawo zokuhlala eziningana. Isetshenziselwa ukuhlukanisa isignali.