4 E lutse holim'a GPON
Nilesat, Eutelsat 8W, Badr 4/5/6/7 & Es'hail 2, Hot Bird 13E ke li-satellite tse tummeng bohareng ba bochabela.Batho ba rata ho li shebella.Ke mosebetsi o boima ho lelapa le le leng ho kenya lijana tsa sathelaete tse 'ne tse fanang ka seamoheli se le seng sa sathelaete.Ke mosebetsi o boima ho ba ngolisitseng ba lulang mohahong o le mong ho arolelana lijana tse 'nè tsa sathelaete holim'a bongata ba likhoele tsa coaxial.Marang-rang ke tlhokahalo e ka sehloohong ea tlhokahalo lefatšeng lena.Haeba ho na le fiber ea GPON ho motho e mong le e mong ea ngolisitseng, Greatway Technology e nolofatsa mosebetsi ona ka litšenyehelo tse fumanehang.Tlhahiso ena e fana ka tharollo ea li-satellite tsa 4 tse khethiloeng ka ho fetisisa FTA kapa litaba tse patiloeng FTTH ho ba ka bang 2800 GPON ONU ba ngolisitseng.
Satellite Transponders E hlophisitsoe ke dCSS LNB ka mokhoa o tsitsitseng
Sathelaete ka 'ngoe e na le li-transponder tse ka bang 10 ~ 96.20% litaba tse ka hare li tumme ho ba ngolisitseng 80%.Ho boloka litšenyehelo tsa lehae ka 'ngoe tsa FTTH, re khetha feela li-transponder tse 32 tse tsebahalang (32 User Bands) ho tloha satellite ka 'ngoe ho ea malapeng ohle a GPON.Ho etsa sena, re hloka 4pcs dCSS static LNB le 32UB e khethiloeng ea sathelaete ka 'ngoe.(Re khothaletsa ho sebelisa Inverto dCSS LNB le SatPal kapa lihlahisoa tse tšoanang. Greatway e ka fana ka dCSS LNB ka tlhahiso e tsitsitseng ea 32UB haeba re tseba lebitso la hau la sathelaete le li-transponder tse 32 tse lakatsehang ebang ke Horizontal kapa Vertical).
Phetoho ea lets'oao la DTT
DTT e fanoa ke basebetsi ba 'maloa toropong mme litora tsa transmitting tsa DTT li ka ema libakeng tse fapaneng tsa toropo.Letšoao la DTT le haufi le tora ea DTT le ka ba matla ho kenya sete ea TV ka kotloloho.Ho qoba ho kena-kenana le maqhubu a tšoanang, ho kgothaletswa hore o fetole maqhubu ohle a DTT pele ho optical transmitter Terr TV input.Morerong ona, ho na le bajari ba 3 ba Terrestrial RF: VHF7 le UHF32, UHF36.Re etsa tlhahiso ea ho sebelisa converter e le 'ngoe ea GTC250 terrestrial TV frequency ho ba le maqhubu a latelang a macha a Terrestrial TV: VHF8, le UHF33 le UFH31 (Ka lebaka la maemo a PAL-B/G le likarolo tsa matšoao a DTT, re khothaletsa VHF ho ea ho VHF le UHF ho fetolela UHF ).GTC250 e na le lisebelisoa tse 'ne tsa VHF/UHF le tlhahiso e le 'ngoe ho isa ho boholo ba 32ch DTT RF.1pcs GTC250 e ka ntša 3ch DTT RF ea boleng bo holimo e hloekileng (e 'ngoe le e 'ngoe e le boemong ba 85dBuV RF) ho transmitter ea optical, ho sefa kapa ho thibela matšoao a 4G le 5G.
Transmitter ea Optical
1pcs GLB3500M-4TD DWDM optical transmitter e amohela 4x32UB satellite inputs le e le 'ngoe DTC250 terrestrial RF input, e fetola kaofela ha tsona ho feta 1550nm DWDM SM fiber.
GLB3500M-4TD optical transmitter e lokela ho kenngoa ka tlung.Mohala oa coaxial oa RG6 ho bolelele bo bong le bo bong ba dCSS LNB e lokela ho ba tlase ho limithara tse 50.
Optical Splitter
Kaha bohle ba ngolisitseng GPON ba 2800 ba arotsoe ka lihlopha tse 1x16, bonyane ho na le lihlopha tse 175.
GLB3500M-4TD e na le matla a ka bang +9dBm a tsoang, a tla lateloa ke 1pcs 1x4 PLC e arohaneng pele.Har'a liphetho tse 4 tsa li-splitter, liphetho tse 3 tse arohaneng li hokahane le 3pcs matla a phahameng a GWA3500-34-64W ka ho latellana.1 e hlahisoang e le boema-kepe ba standby.
Optical Amplifier
Moamoheli e mong le e mong oa GWA3500-34-64W o na le 1550nm optical input, 64 OLT inputs, le 64 com ports, moo koung ka 'ngoe ea com e nang le>+12dBm@1550nm.Boema-kepe bo bong le bo bong bo hokahane le 1x16 PON splitter, e fanang ka TV le GPON Ethernet ka bobeli.
GWA3500-34-64W Optical amplifier e lokela ho kenngoa haufi le GPON OLT kapa haufi le hub ea fiber cable.Li-amplifiers tsa 3pcs GWA3500-34-64W li na le likou tse 192 tse hlahisoang, ntle le likou tse hokahaneng tse 175, likou tse sa sebelisoeng joalo ka likou tse emeng.
Sistimi ea khale ea GPON e tlameha ho kengoa 1x16 splitter.Re li thathamisitse ho BOM haeba u hloka 1x16 splitter.
Optical Receiver le GPON ONU
Ho e 'ngoe le e' ngoe ea GPON ONU, re fana ka tlhahiso ea ho sebelisa adaptara e le 'ngoe ea SC/UPC le 1 meter duplex SC/UPC ho LC/UPC jumper, moo fiber e le 'ngoe e fetolelang fiber e kenang ea SC/UPC ho LC/UPC ho GLB3500M-4RH4-K optical LNB le tse ling li fetolela loop out letšoao la GPON ho khutlela ho SC/UPC ho GPON ONU e teng.
GLB3500M-4RH4-K e na le likou tse 'ne tsa RF, koung e' ngoe le e 'ngoe ea RF e fana ka litaba tsa satellite tsa 4x32UB le TV ea lefatše.Haeba ho na le li-decoder tse fetang 4 tsa sathelaete sebakeng se seng le se seng sa GPON ONU, boema-kepe bo bong le bo bong ba RF ba GLB3500M-4RH4-K bo ka hokeloa ka mokhoa o le mong oa 4-way kapa 8-way satellite splitter ho ts'ehetsa li-satellite tse 16 kapa tse 32, moo satellite splitter e nang le eona. e le 'ngoe RF port pass DC feela.Moamoheli oa sathelaete o hokahantsoeng le boema-kepe ba DC o khetha 1 ho li-satellite tse 'ne, ba amohelang sathelaete ba hokelang boema-kepeng ba DC ba shebella likahare tsa satellite tsa 32UB tse khethiloeng.
Satellite Receiver
Moamoheli oa kamehla oa sathelaete o tšehetsang litaba tsa lisathelaete tse ngata o ka shebella litaba tsohle tsa FTA le litaba tse patiloeng ka karete ea CA.Ha ho tlhokahalo ea ts'ebetso e sa sebetseng ho se amohelang sathelaete.
Fiber Jumper
Ka lebaka la sehokelo se phahameng sa EYDFA, re ka sebelisa sehokelo sa LC/UPC sebakeng sa sehokelo sa SC/UPC.Ho lokela ho ba le khoele e tlokomang ea faeba joalo ka LC/UPC ho SC/UPC kapa LC/APC ho SC/APC.
Bakeng sa tlhahisoleseling e felletseng, ka kopo sheba faele ea pdf kapa ikopanye le Greatway Technology.