4 Ihlala ngaphezulu kweGPON
I-Nilesat, i-Eutelsat 8W, i-Badr 4/5/6/7 kunye ne-Es'hail 2, i-Hot Bird 13E zezona satellite zidumileyo kumbindi-mpuma.Abantu bayakuthanda ukuzibukela.Ngumsebenzi onzima kusapho olunye ukufaka izitya ezine zesathelayithi ezinikezela ngesathelayithi enye kuphela.Kungumsebenzi onzima kubabhalisi abahlala kwisakhiwo esinye ukwabelana ngezitya ezine zesathelayithi phezu kwenqwaba yeentambo ze-coaxial.I-Intanethi yeyona mfuno iphambili ephambili kulo mhlaba.Ukuba kukho i-GPON ifayibha kumrhumi ngamnye, i-Greatway Technology yenza lo msebenzi ube lula ngexabiso elifikelelekayo.Esi siphakamiso sinika isisombululo seesathelayithi ezi-4 ezikhethiweyo zeFTA ethandwa kakhulu okanye imixholo efihliweyo FTTH ukuya malunga nababhalisi beGPON ONU abangama-2800.
I-Satellite Transponders Ihlelwe yi-dCSS LNB kwimowudi engatshintshiyo
Isathelayithi nganye inee-transponder ezimalunga ne-10 ~ 96.Imixholo ye-20% idume kubabhalisi be-80%.Ukugcina iindleko zekhaya ngalinye le-FTTH, sikhetha nje ii-transponders ezithandwayo ezingama-32 (iibhendi zoMsebenzisi ezingama-32) ukusuka kwisathelayithi nganye kuwo onke amakhaya eGPON.Ukwenza oku, sifuna i-4pcs dCSS static LNB kunye ne-32UB ekhethiweyo yesathelayithi nganye.(Sincoma ukusebenzisa i-Inverto dCSS LNB kunye ne-SatPal okanye iimveliso ezifanayo. I-Greatway inokubonelela nge-dCSS LNB ngemveliso esisigxina ye-32UB esisigxina ukuba siyalazi igama lakho lesathelayithi kunye ne-32 efunekayo transponders mhlawumbi kwi-Horizontal okanye i-Vertical).
Ukuguqulwa komqondiso we-DTT
I-DTT ibonelelwa ngabasebenzi abambalwa esixekweni kwaye ii-DTT zokuhambisa iinqaba zinokuma kwiindawo ezahlukeneyo zesixeko.Isignali ye-DTT ecaleni kwe-DTT tower inokuba namandla ukufaka iseti ye-TV ngokuthe ngqo.Ukunqanda uphazamiseko olufanayo lwamaza, kuyacetyiswa ukuba uguqule yonke i-DTT ye-frequency carrier phambi kokufakwa kwe-optical transmitter Terr TV.Kule projekthi, kukho abathwali be-Terrestrial RF: VHF7 kunye ne-UHF32, UHF36.Sicebisa ukuba kusetyenziswe isiguquli se-GTC250 se-terrestrial TV frequency ukuze sibeneziza ze-TV zeTerestrial ezintsha zilandelayo: i-VHF8, kunye ne-UHF33 kunye ne-UFH31 (Ngenxa yomgangatho we-PAL-B/G kunye neempawu zesignali ye-DTT, sicebisa i-VHF ukuya kwi-VHF kunye ne-UHF ukuya kuguqulelo lwe-UHF ).I-GTC250 inamagalelo amane eVHF/UHF kunye nenye ukuya kuthi ga kwi-32ch DTT RF ephumayo.I-1pcs ye-GTC250 inokukhupha umgangatho ococekileyo we-3ch DTT RF (nganye kwinqanaba le-85dBuV RF) kwi-transmitter ebonakalayo, ukuhluza okanye ukuvala iisignali ze-4G kunye ne-5G zeselula.
I-Optical Transmitter
I-1pcs GLB3500M-4TD I-DWDM isidluliseli esibonakalayo ifumana i-4x32UB igalelo lesathelayithi kunye negalelo elinye le-DTC250 yasemhlabeni RF, liziguqule zonke ngaphezulu kwe-1550nm DWDM SM fiber.
I-GLB3500M-4TD i-optical transmitter kufuneka ifakwe ngaphakathi.Intambo ye-RG6 coaxial kubude be-dCSS LNB nganye kufuneka ibe ngaphantsi kweemitha ezingama-50.
I-Optical Splitter
Ekubeni bonke ababhalisi be-GPON be-2800 bahlanganiswe nge-1x16 splitter, kukho ubuncinane amaqela angama-175.
I-GLB3500M-4TD inamandla okuphuma kwe-+9dBm, eya kulandelwa yi-1pcs 1x4 PLC yokuhlukanisa kuqala.Phakathi kweziphumo ezi-4 eziqhekezayo, iziphumo ze-3 zokuhlukanisa zixhunywe kunye ne-3pcs amandla aphezulu GWA3500-34-64W ngokulandelanayo.Isiphumo esi-1 sokuqhekeza njengezibuko elilindileyo.
iAptical Amplifier
I-GWA3500-34-64W nganye i-optical receiver ine-optical input ye-1550nm, igalelo le-OLT engama-64, kunye namachweba angama-64, apho izibuko ze-com nganye zine>+12dBm@1550nm.Izibuko ngalinye le-com liqhagamshelwe kunye ne-1x16 ye-PON eqhekezayo, enikezela zombini i-TV kunye ne-GPON Ethernet.
I-GWA3500-34-64W iamplifier yokukhanya kufuneka ifakwe ecaleni kwe-GPON OLT okanye isondele kwi-hub yentambo ye-fiber.I-3pcs GWA3500-34-64W i-amplifiers ebonakalayo ine-192 izibuko eziphumayo, ngaphandle kwe-175 edibeneyo yamachweba, izibuko ezingasetyenziswanga njengamazibuko alindileyo.
Inkqubo yangaphambili ye-GPON kufuneka ibene-1x16 eqhekezayo efakiweyo.Sizidwelise kwi-BOM ukuba ufuna i-1x16 splitter.
I-Optical Receiver kunye ne-GPON ONU
Kwi-GPON ONU nganye, sicebisa ukusebenzisa i-adapter enye ye-SC/UPC kunye ne-1 meter duplex SC/UPC ukuya kwi-LC/UPC jumper, apho i-fiber eyi-1 iguqula i-SC/UPC fiber engenayo ibe yi-LC/UPC ukuya kwi-GLB3500M-4RH4-K ye-optical LNB kunye enye iguqula iluphu ngaphandle uphawu lweGPON umva kwi SC/UPC kwiGPON ONU ekhoyo.
I-GLB3500M-4RH4-K inamazibuko eRF amane, izibuko ngalinye le-RF libonelela nge-4x32UB imixholo yesathelayithi kunye nomabonwakude osemhlabeni.Ukuba kukho ngaphezu kwe-4 idikhowuda zesathelayithi kwindawo nganye ye-GPON ONU, izibuko leRF ngalinye le-GLB3500M-4RH4-K lingaqhagamshelwa yindlela enye ye-4 okanye indlela yesi-8 yesathelayithi yokuhlukanisa ukuxhasa i-16 okanye i-32 yabamkeli besathelayithi, apho i-satellite splitter ineendlela ezi-4 okanye ezi-8. enye RF port pass DC kuphela.I-satellite receiver edibanisa ne-DC yokudlula i-port ikhetha i-1 ye-satellites ezine, abamkeli besathelayithi abaxhuma kwi-port ye-DC bajonga iziqulatho zesathelayithi ze-32UB ezikhethiweyo.
Isathelayithi Receiver
Umamkeli wesathelayithi oqhelekileyo oxhasa imixholo yeesathelayithi ezininzi ukukhangela unokubukela yonke imixholo yeFTA kunye nemixholo efihliweyo ngekhadi le-CA.Akukho mfuneko yokusebenza ingasebenziyo kumamkeli wesathelayithi.
IFayibha Jumper
Ngenxa yoxinaniso oluphezulu lwe-EYDFA, sinokusebenzisa i-LC/UPC isinxibelelanisi endaweni ye-SC/UPC isinxibelelanisi.Kufuneka kubekho i-patchcord yefayibha yokutsiba efana ne-LC/UPC ukuya kwi-SC/UPC okanye i-LC/APC ukuya kwi-SC/APC.
Ngolwazi olupheleleyo, nceda ujonge ifayile ye-pdf okanye uqhagamshelane ne-Greatway Technology.