4 Imakhala pa GPON
Nilesat, Eutelsat 8W, Badr 4/5/6/7 & Es'hail 2, Hot Bird 13E ndi ma satellite otchuka ku Middle East. Anthu amakonda kuwawonera. Ndi ntchito yovuta kuti banja limodzi liyike zida zinayi za satelayiti zomwe zimagwiritsa ntchito satellite receiver imodzi yokha. Ndi ntchito yovuta kwa olembetsa omwe akukhala m'nyumba imodzi kuti agawane ma satelayiti anayi pa mtolo wa zingwe za coaxial. Intaneti ndiye chinthu chofunikira kwambiri padziko lapansi pano. Ngati pali GPON fiber kwa aliyense wolembetsa, Greatway Technology imapangitsa kuti ntchitoyi ikhale yosavuta pamtengo wotsika mtengo. Lingaliroli limapereka yankho la ma satellite 4 osankhidwa otchuka kwambiri a FTA kapena zomwe zili mu encrypted FTTH kwa olembetsa pafupifupi 2800 GPON ONU.
Satellite Transponders Wosinthidwa ndi GSS32 dCSS Satellite Converter
Setilaiti iliyonse ili ndi ma transponder pafupifupi 10~96 ochokera ku Quattro LNB yokhazikika. 20% zomwe zili mkati ndizodziwika mwa olembetsa 80%. Tidzagwiritsa ntchito satellite converter (zolowera 4 zodziyimira pawokha ndi 950 ~ 2150MHz zotulutsa za satellite) kusankha zomwe tikufuna pa satana ku FTTH system. Kuti tichite izi, timafunikira 4pcs GSS32 dCSS satellite converters kuti tikhale ndi ma transponders opitirira 128 (128 User Bands) kuchokera ku ma satellites 4 (Chonde funsani Greatway Technology kuti mudziwe zambiri).
Kusintha kwazizindikiro za DTT
DTT imaperekedwa ndi ogwira ntchito ochepa mumzindawu ndipo nsanja zotumizira za DTT zitha kuyima m'malo osiyanasiyana amzindawu. Chizindikiro cha DTT pafupi ndi nsanja ya DTT chikhoza kukhala champhamvu kuti mulowetse TV mwachindunji. Kuti mupewe kusokonezedwa kwafupipafupi komweko, tikulimbikitsidwa kuti musinthe ma frequency onse a DTT chonyamulira musanayambe kuyika kwa optical transmitter Terr TV. Mu pulojekitiyi, pali zonyamula 3 Terrestrial RF: VHF7 ndi UHF32, UHF36. Tikupempha kuti mugwiritse ntchito chosinthira chimodzi cha GTC250 terrestrial TV kuti mukhale ndi ma frequency atsopano a Terrestrial TV: VHF8, ndi UHF33 ndi UFH31 (Chifukwa cha mawonekedwe a PAL-B/G ndi ma siginoloji a DTT, tikupangira kuti VHF ikhale VHF ndi UHF kukhala UHF ). GTC250 ili ndi zolowetsa zinayi za VHF/UHF ndi imodzi mpaka 32ch DTT RF yotulutsa. 1pcs GTC250 imatha kutulutsa 3ch DTT RF yapamwamba kwambiri (iliyonse pamlingo wa 85dBuV RF) kupita ku transmitter yamagetsi, kusefa kapena kutsekereza ma siginecha a 4G ndi 5G.
Optical Transmitter
1pcs GLB3500M-4TD DWDM Optical transmitter imalandira zolowetsa satellite za 4x32UB ndi kulowetsa kumodzi kwa GTC250 terrestrial RF, kutembenuza zonsezi kukhala 1550nm DWDM.SM CHIKWANGWANI.
GLB3500M-4TD Optical transmitter iyenera kuyikidwa m'nyumba. Kutalika kwa chingwe cha RG6 coaxial kuchokera ku Quattro LNB iliyonse kupita ku GSS32 satellite converter kuyenera kukhala yosakwana 50 metres.
Optical Splitter
Popeza onse 2800 olembetsa GPON agawidwa ndi 1x16 splitter, pali magulu osachepera 175.
GLB3500M-4TD ili ndi mphamvu yotulutsa pafupifupi +9dBm, yomwe idzatsatiridwa ndi 1pcs 1x4 PLC yogawa poyamba. Pakati pa zotulutsa 4 zogawa, zotulutsa 3 zogawa zimalumikizidwa ndi 3pcs mphamvu yayikulu GWA3500-34-64W motsatana. 1 zotulutsa ngati doko loyimilira.
Optical Amplifier
GWA3500-34-64W iliyonse yolandila kuwala imakhala ndi cholowetsa chimodzi cha 1550nm, zolowetsa 64 OLT, ndi ma doko 64, pomwe madoko aliwonse amakhala ndi>+12dBm@1550nm. Doko lililonse la com limalumikizidwa ndi 1x16 PON splitter, yopereka ma TV onse ndi GPON Ethernet.
GWA3500-34-64W amplifier kuwala ayenera kuikidwa pafupi ndi GPON OLT kapena pafupi ndi fiber chingwe hub. 3pcs GWA3500-34-64W Optical amplifiers ali ndi madoko 192 otuluka, kuphatikiza madoko 175 olumikizidwa, madoko osagwiritsidwa ntchito ngati madoko oyimilira.
Dongosolo lakale la GPON liyenera kukhala ndi 1x16 splitter. Tidawalemba mu BOM ngati mukufuna 1x16 splitter.
Optical Receiver ndi GPON ONU
Pa GPON ONU iliyonse, tikupangira kugwiritsa ntchito adaputala imodzi ya SC/UPC ndi 1 mita duplex SC/UPC kupita ku LC/UPC jumper, pomwe 1 CHIKWANGWANI chimatembenuza ukubwera wa SC/UPC CHIKWANGWANI kukhala LC/UPC kukhala GLB3500M-4RH4-K kuwala LNB ndi zina zimatembenuza chizindikiro cha GPON kubwerera ku SC/UPC kupita ku GPON ONU yomwe ilipo.
GLB3500M-4RH4-K ili ndi madoko anayi a RF, doko lililonse la RF limapereka 4x32UB za satana ndi TV yapadziko lapansi. Ngati pali ma satellite decoder opitilira 4 pamalo aliwonse a GPON ONU, doko lililonse la RF la GLB3500M-4RH4-K litha kulumikizidwa ndi 4-way kapena 8-way satellite splitter kuti zithandizire 16 kapena 32 zolandila satelayiti, pomwe satellite splitter ili nayo. doko limodzi la RF lidutsa DC yokha. Wolandira satellite wolumikizana ndi doko lodutsa la DC amasankha 1 mwa ma satelayiti anayi, olandila satelayiti olumikizidwa padoko lopanda DC amawonera zomwe zasankhidwa za 32UB.
Satellite Receiver
Wolandila satelayiti pafupipafupi yemwe amathandiza kusaka kwa ma satelayiti angapo amatha kuwona zonse zomwe zili mu FTA ndi zomwe zasungidwa ndi CA khadi. Palibe ntchito yofunikira pa cholandila satana.
Fiber Jumper
Chifukwa cha kuchuluka kwa EYDFA, titha kugwiritsa ntchito cholumikizira cha LC/UPC m'malo mwa SC/UPC cholumikizira. Payenera kukhala zingwe zodumphira za ulusi monga LC/UPC kupita ku SC/UPC kapena LC/APC kupita ku SC/APC.
Kuti mudziwe zambiri, chonde onani fayilo ya pdf kapena funsani Greatway Technology.