4 Ihlala phezu kwe-GPON
I-Nilesat, i-Eutelsat 8W, i-Badr 4/5/6/7 kanye ne-Es'hail 2, i-Hot Bird 13E amasathelayithi adumile empumalanga emaphakathi. Abantu bayathanda ukuwabuka. Kungumsebenzi onzima kumndeni owodwa ukufaka izitsha zesathelayithi ezine ezinikeza isathelayithi eyodwa kuphela. Kungumsebenzi onzima kwababhalisile abahlala esakhiweni esisodwa ukwabelana ngezitsha ezine zesathelayithi phezu kwenqwaba yamakhebuli angama-coaxial. I-inthanethi iyisidingo esiphezulu esibalulekile kule planethi. Uma kune-GPON fiber kobhalisile ngamunye, i-Greatway Technology yenza lo msebenzi ube lula ngezindleko ezithengekayo. Lesi siphakamiso sinikeza isisombululo samasathelayithi angu-4 akhethiwe e-FTA ethandwa kakhulu noma okuqukethwe okubethelwe i-FTTH kwababhalisile abangaba ngu-2800 be-GPON ONU.
I-Satellite Transponders Ihlelwe yi-GSS32 dCSS Satellite Converter
Isathelayithi ngayinye inama-transponder angu-10~96 asuka ku-Quattro LNB evamile. Okuqukethwe okungu-20% kudumile kwababhalisile abangu-80%. Sizosebenzisa isiguquli sesathelayithi (okufakwayo oku-4 okuzimele kanye nokuphumayo kwesathelayithi okukodwa okungu-950~2150MHz) ukuze sikhethe okuqukethwe kwesathelayithi esifunwayo ohlelweni lwe-FTTH. Ukuze senze lokhu, sidinga iziguquli zesathelayithi ezingu-4pcs GSS32 dCSS ukuze sibe nama-transponder angu-128 (128 User Bands) asuka kulawa masathelayithi angu-4 (Sicela uthinte i-Greatway Technology ukuze uthole inkomba yokusebenza).
Ukuguqulwa kwesignali ye-DTT
I-DTT inikezwa opharetha abambalwa edolobheni futhi imibhoshongo yokudlulisa i-DTT ingase ime ezindaweni ezahlukene zedolobha. Isignali ye-DTT eduze kombhoshongo we-DTT ingase ibe namandla ukufaka isethi ye-TV ngokuqondile. Ukuze ugweme ukuphazamiseka okufanayo kwefrikhwensi, kuyanconywa ukuthi uguqule yonke imvamisa yenkampani yenethiwekhi ye-DTT ngaphambi kokufaka isidluliseli esibonakalayo se-Terr TV. Kule phrojekthi, kukhona abathwali be-Terrestrial RF: VHF7 kanye ne-UHF32, UHF36. Siphakamisa ukusebenzisa isiguquli esisodwa se-GTC250 terrestrial TV ukuze sibe namafrikhwensi amasha alandelayo e-Terrestrial TV: i-VHF8, ne-UHF33 ne-UFH31 (Ngenxa yezinga le-PAL-B/G nezici zesignali ye-DTT, sincoma ukuguqulwa kwe-VHF kuya ku-VHF kanye ne-UHF ku-UHF ). I-GTC250 inokufakwayo okune kwe-VHF/UHF nokukodwa kufika kokuphumayo okuphezulu okungu-32ch DTT RF. I-1pcs GTC250 ingakhipha i-3ch DTT RF yekhwalithi ephezulu ehlanzekile (ngayinye ezingeni le-85dBuV RF) iye kusidlulisi se-optical, ihlunge noma ivimbe amasiginali weselula we-4G ne-5G.
I-Optical Transmitter
I-1pcs GLB3500M-4TD DWDM optical transmitter ithola okokufaka kwesathelayithi okungu-4x32UB kanye nokokufaka kwe-GTC250 terrestrial RF eyodwa, iziguqule zonke zibe ngaphezu kwe-1550nm DWDMI-SM fiber.
I-GLB3500M-4TD i-optical transmitter kufanele ifakwe endlini. I-RG6 coaxial cable ubude ukusuka kusiguquli sesathelayithi se-Quattro LNB ngasinye ukuya ku-GSS32 kufanele sibe ngaphansi kwamamitha angu-50.
I-Optical Splitter
Njengoba bonke ababhalisile be-GPON abangu-2800 behlelwe yi-1x16 splitter, okungenani kunamaqembu angu-175.
I-GLB3500M-4TD inamandla acishe abe ngu-+9dBm, azolandelwa yisihlukanisi esingu-1pcs 1x4 PLC kuqala. Phakathi kokuphuma kwe-4 okuhlukanisiwe, ukuphuma kwe-splitter engu-3 kuxhunywe namandla aphezulu angu-3pcs GWA3500-34-64W ngokulandelanayo. 1 okukhiphayo kwesihlukanisi njengembobo elindile.
I-Optical Amplifier
Isamukeli se-GWA3500-34-64W ngasinye sinokufaka okukodwa okungu-1550nm, okokufaka okungu-64 OLT, kanye namachweba angama-64, lapho izimbobo ze-com zine>+12dBm@1550nm. Imbobo ngayinye ye-com ixhunywe nesihlukanisi se-PON esingu-1x16, esinikeza kokubili i-TV ne-GPON Ethernet.
I-GWA3500-34-64W iamplifier ebonakalayo kufanele ifakwe eduze kwe-GPON OLT noma eduze kwehabhu yekhebula lefayibha. Ama-3pcs GWA3500-34-64W ama-optical amplifiers anamachweba okukhiphayo angu-192, ngaphandle kwamachweba axhunyiwe angu-175, amachweba angasetshenzisiwe njengamachweba alindile.
Isistimu ye-GPON yangaphambili kufanele ibe nesihlukanisi esingu-1x16 esifakiwe. Sizibale ku-BOM uma udinga isihlukanisi esingu-1x16.
I-Optical Receiver kanye ne-GPON ONU
Ku-GPON ONU ngayinye, siphakamisa ukuthi kusetshenziswe i-adaptha eyodwa ye-SC/UPC kanye nemitha engu-1 duplex SC/UPC kuya ku-LC/UPC jumper, lapho ifayibha engu-1 iguqulela i-SC/UPC fibre engenayo ibe yi-LC/UPC ibe yi-GLB3500M-4RH4-K yokubona i-LNB kanye enye iguqula isignali ye-loop out ye-GPON ibuyele ku-SC/UPC iye ku-GPON ONU ekhona.
I-GLB3500M-4RH4-K inezimbobo ezine ze-RF, imbobo ngayinye ye-RF inikeza okuqukethwe kwesathelayithi okungu-4x32UB kanye ne-TV yasemhlabeni. Uma kunamadekhoda asesathelayithi angaphezu kuka-4 endaweni ngayinye ye-GPON ONU, imbobo ngayinye ye-RF ye-GLB3500M-4RH4-K ingaxhunywa ngesihlukanisi sesathelayithi sezindlela ezi-4 noma ezingu-8 ukuze sisekele izamukeli zesathelayithi eziyi-16 noma ezingu-32, lapho isihlukanisi sesathelayithi sinendlela eyodwa. imbobo eyodwa ye-RF idlula i-DC kuphela. Umamukeli wesathelayithi oxhuma nechweba elidlulayo le-DC likhetha isathelayithi e-1 kwamane, izamukeli zesathelayithi ezixhumeka ngaphandle kwechweba le-DC zibuka okuqukethwe kwesathelayithi okungu-32UB okukhethiwe.
Isamukeli sesathelayithi
Isamukeli esivamile esisekela ukusesha okuqukethwe kwamasathelayithi amaningi singabuka konke okuqukethwe kwe-FTA nokuqukethwe okubethelwe ngekhadi le-CA. Asikho isidingo sokusebenza esingafinyeleleki kumamukeli wesathelayithi.
I-Fiber Jumper
Ngenxa yokuminyana okuphezulu kwe-EYDFA, singase sisebenzise isixhumi se-LC/UPC esikhundleni sesixhumi se-SC/UPC. Kufanele kube khona i-fiber patchcord egxumayo efana ne-LC/UPC iye ku-SC/UPC noma i-LC/APC ku-SC/APC.
Ukuze uthole ulwazi olugcwele, sicela uhlole ifayela le-pdf noma uthinte i-Greatway Technology.