Injongo, ukhetho kunye nokusetyenziswa kwe-multiswitch kwisitya sesatellite

Ixesha likamabonakude wesathelayithi liya liphela ngokuthe ngcembe, livula amathuba amatsha kumabonakude we-Intanethi. Nangona kunjalo, ayizizo zonke iindawo kwiplanethi ezine-Intanethi ngoku kwindawo yoluntu. Ukubonelela ngendlu enkulu ngesathelayithi kunye nomqondiso wehlabathi, i-multiswitch isetyenziswa. Makhe sihlalutye ngokubanzi isixhobo salo, kutheni sidingeka kwaye sidityaniswe njani.

Yintoni kwaye kutheni ufuna i-multiswitch kwizitya zesathelayithi

I-multiswitch idlala indima yohlobo “lokulinganisa” kunye “nomthengisi” wesathelayithi kunye nomqondiso wehlabathi. Enyanisweni, esi sisixhobo esincinci esenza lula kakhulu ubomi babathandi beTV.

Kutheni udinga

Ukuqonda ukuba kutheni ufuna i-multiswitch, kufuneka usombulule iqhina elinye: ungabonelela njani ngokungenasiphazamiso kubabhalisi bakho ngomabonakude wohlobo lwesatellite. Ngexesha lokuthandwa kweTV yesatellite , lo mbuzo unzima wavela kubasebenzisi . Inketho yokuqala nelula icacile: umxhasi omnye = i- eriyali enye/sathelayithi. Ifomula ilula. Nangona kunjalo, kunye nenketho elula, kuvela ingxaki elula: ukuba kukho izindlu ezingama-48 endlwini, kwaye indlu nganye ifuna ukufaka i-satellite TV, ngoko kuya kuba ne-antenna ezingama-48 eluphahleni lwendlu ehambisa idatha. Oku kuthetha ukuba uphahla luya kugutyungelwa ngokupheleleyo ngabathumeli. Kwezinye iindawo akulula, kwaye kwezinye akuvumelekanga ngokupheleleyo. Ukuphazamiseka okuphambili liqela leentambo ezivezwe kwimeko yangaphandle kwaye zinokubiwa ngokulula eluphahleni. Inketho yesibini kukufaka isiguquli sesathelayithingenani leziphumo ezilingana nenani lababhalisi. Nangona kunjalo, apha umntu kufuneka athathele ingqalelo kungekuphela nje bonke ababhalisi bendlu, kodwa kunye nababhalisi abanokubakho. Kwakhona kwimarike ngoku kunzima ukufumana isiguquli esineziphumo ezingaphezulu kwe-4.

Ikhulula uphahla kunye ne-facades izakhiwo zokuhlala , ukuqinisekisa ukwamkelwa komqondiso kubo bonke abahlali.

Indlela yokukhetha ukuba zeziphi iintlobo zesixhobo ezikhoyo

Xa ukhetha, kufuneka uqale kwizinto ezimbini: inani lamanqaku oqhagamshelwano kunye nokuba zikude kangakanani ukusuka kwi-eriyali. Ngokweempawu eziphambili, i-multiswitch yahlulwe ibe:

1. Ukunikezelwa kwamandla: ukusuka kwi-220 V kwaye ukusuka kwi-18 V.
2. Inani elikhoyo lamazibuko egalelo kunye nemveliso.

Inani lamanqaku liza kukuvumela ukuba uqonde ukuba zingaphi iziphumo ozifunayo ukufunxa ngokupheleleyo umqondiso.

I-Cascadable okanye i-terminal

Umgama oya kwi-eriyali uchaphazela ngqo uhlobo olufunekayo lwe-multiswitch: i-cascade okanye i-terminal.

I- Cascaded isetyenziswa ngokubanzi kwizakhiwo zokuhlala, iiofisi zenkampani kunye nezakhiwo zokuhlala ezinenani elikhulu labantu. Olu hlobo lwesixhobo aludingi amandla kwaye longezwa ngekhonkco kwindawo yokusabalalisa umqondiso (ngokuqhelekileyo yonke umgangatho kwisakhiwo). Kubalulekile ukuba izixhobo zidibaniswe omnye komnye. Ukuba kuyimfuneko ukudibanisa i-amplifier yomqondiso, i-injector yamandla idibaniswe, efuna i-AC outlet enamandla angama-220 volts. Indawo yokukhwelelauhlobo lwe-multiswitch lucetyiswa ukuba lufakwe kwizindlu zabucala okanye kumagumbi amancinci. Oku kungenxa yomgama osondeleyo kwi-eriyali. Isixhobo sifakwe kwi-switchboard, kuba kukuyo ukuba iintambo ezivela kwi-antenna zingena kwaye apho iintambo ziya kumamkeli. I-terminal multiswitch ifuna umbane. Oko kukuthi, ngaphakathi kwendawo yomitha kufuneka kubekho isiseko kunye nokunikezelwa kwe-AC ye-220 volts.

Ii-multiswitch ezisebenzayo kunye ne-passive

Kukwakho iindidi ezinje ngeemodeli ezisebenzayo kunye ne-passive multiswitch. Imodeli esebenzayo ibandakanya i-amplifier yesignali edibeneyo. Olu phawu luyimfuneko ukuba ufuna ukudibanisa i-eriyali esemoyeni. Ukwenza ukhetho lube lula, ezinye iibrendi zilebhelisha iimveliso zazo ngolu hlobo lulandelayo:

1. P – isenziwa.
2. A – esebenzayo.
3. U – uhlobo jikelele.

Kwinqanaba lokwenziwa, oku kunokwenzeka akubonelelwanga. Ukwenza oku, i-amplifier yohlobo olongezelelweyo lwangaphandle luxhunyiwe, oluya kufuneka luthengwe ngokwahlukileyo. I-multiswitches engabonakaliyo kunye esebenzayo ihluke omnye komnye kwiiparameters zesignali yegalelo: i-passive eyodwa iya kunika isalathisi esisezantsi.

Yintoni i-multiswitch, injongo kunye nokusetyenziswa kwesixhobo:

https://youtu.be/cggC3FLtdaE

Uqhagamshelwano kunye nokuseta

I-multiswitch ixhotyiswe ngezihlanganisi zokufaka (ezifunekayo kubaguquleli ), kunye nemveliso (yabamkeli). Inani lee-output connectors lilingana nenani labamkeli abaqhagamshelweyo. Inani labamkeli lihambelana nenani labaxhasi abaxhunyiwe. Ukuqonda undoqo womsebenzi wezihlanganisi zemveliso kunzima ngakumbi. Umqondiso we-Ku-band wondliwa kuwo, owahlulwe kwiintlobo ze-polarization kunye nama-sub-bands amabini. Oku kuthetha ukuba ukuze ufumane i-spectrum epheleleyo yomlambo ukusuka kwisixhobo esinye sokudlulisa (kwimeko yethu, i-satellite), kuya kufuneka usebenzise i-4 igalelo lokutshintsha, ukudibanisa kwiziphumo ezine zokuguqula (kwezinye iimeko, abaguquli abahlukeneyo). I-eriyali eqhelekileyo yomhlaba kufuneka iqhagamshelwe kwisidibanisi ngokrolo lwe “Terr”, okanye Umqondiso ovela kwikhamera yevidiyo ngaphandle. Ukudibanisa i-radial multiswitch, isicwangciso esilandelayo sisetyenzisiweyo:
Umfanekiso ubonisa imodeli ye-MR516. Ngokusekelwe kwigama kwifomula, iskimu siya kuba ngu-5 * 16. Kuya kubakho amagalelo ama-5 (i-1 ye-terrestrial TV), kunye nama-4 osasazo lwesathelayithi. 4 ukudibanisa kuba i-polarization nganye ineendlela ezimbini.

Ingcebiso! Kucetyiswa ukuba usebenzise i-frequency 11700 MHz njengomda we-determinant of the lower and top ranges. Sesi salathisi luhlobo lwesahluli.

Emva kwe-eriyali esemoyeni, iamplifier yoluhlu lweTV ifakiwe. Rhoqo, inkxaso yeTV kwii-multiswitches ayisebenzi, ngaphandle kolwandiso. Oku kubangelwa ukungafani kokwamkelwa kwe-signal-air-air, ukusetyenziswa kakubi kuya kubangela ukudideka. Lo mzobo ungezantsi ubonisa igrafu yokudibanisa isixhobo kwiziguquli ezimbini ezisuka kwii-eriyali ezahlukeneyo ukuya kwenye yasemhlabeni:
Lo mzobo ungasentla ubonisa indlela i-quad converter ephuma ngayo kwisitya ngasinye. Ekugqibeleni, kwavela amagalelo esi-8 kwisathelayithi, iziphumo ezingama-32 kunye nomgangatho we-1 wophawu olusemhlabeni kunye nokukhulisa kwigalelo leTV. I-Cascade multiswitch iqhagamshelwe ngolu hlobo lulandelayo:
Imodeli ye-MV516 inezindlu zentsimbi ezifayo ezikhusela ulwakhiwo kuphazamiseko lwangaphandle lwe-electromagnetic. Kukho iindlela zokwenziwa kunye nezisebenzayo zeTV yasemhlabeni. Ungaqhagamshela njani iiTV ezili-10 kwi-eriyali enye usebenzisa i-multiswitch: https://youtu.be/BjFxA5Fv_IM

Imibuzo Ebuzwa Rhoqo kunye nezisombululo

Umbuzo wokuqala osoloko ubuzwa ngulo: “Loluphi uhlobo lwesiginali enokuthi idluliselwe kwi-multiswitch?”. Impendulo: ukongeza kuguqulo olucacileyo lwesathelayithi, i-multiswitch iphinda yondla i-amplifiers emoyeni ngokusebenzisa igalelo le-TV. Umbuzo wesibini uthi: “Kutheni ndingakwazi ukusebenzisa umamkeli?”. Impendulo: unako, kodwa olu khetho alufanelekanga kumagumbi apho akuvumelekanga ukufaka abamkeli abangaphezu kwe-3. Musa ukulibala ukuba umqondiso uhlukaniswe, ngaloo ndlela udala umphumo wezandla eziboshwe. Umbuzo wesithathu uthi: “Ndinokunciphisa njani umthwalo ongenayo kummkeli ngokwam?”. Impendulo: Ukwenza oku, kucetyiswa ukuba uthenge i-multiswitch, apho sele ifakwe umbane ohlukeneyo. Umbuzo wesine: “Ngaba ndingasebenzisa i-multiswitch, i-DiSEqC kunye ne-diplexer yenkqubo enye yesathelayithi?”.Impendulo: “Itekhnoloji yanamhlanje yenza ukuba kwenzeke oku ngaphandle kweengxaki.” Umbuzo wesihlanu: “Yeyiphi i-converter endimele ndiyithathe kwi-satellite yaseYurophu?”. Mpendulo:”Universal”. Umbuzo wesithandathu: “Ndifuna ukudibanisa abamkeli aba-2 kwisitya esinye. Ngowuphi owona mamkeli ungcono onokuwuthenga? Impendulo: Hayi, ufuna isiguquli. Umbuzo wesixhenxe: “Yintoni iswitshi?”. Impendulo: DiSEqC. Umgaqo oyintloko wesixhobo kunye nombono wokusebenza kwe-multiswitch kulula kakhulu: ii-eriyali ezimbalwa ukuze zibe nabasebenzisi abaninzi. Kwaye ngokwenene kunjalo. Isixhobo esinye esincinci sinokuthatha indawo yeepleyiti zentsimbi, kwaye silinganise ukuxinezeleka kweendawo ezininzi zokuhlala. Isetyenziselwa ukwahlula umqondiso.