Chithunzi cha GLB3500E-2R FTTH LNB
Mafotokozedwe Akatundu
GLB3500E-2R satellite TV FTTH Optical LNB ndi cholandira cha fiber optic chomwe chimatembenuza siginecha yowoneka bwino kukhala RF mpaka zolandila satellite zinayi m'nyumba imodzi. Kugwira ntchito ndi Greatway GLB3500E-2T satellite TV Optical transmitter, GLB3500E-2R ili ndi gawo la SatCR lokhala ndi wideband satellite RF, limatulutsa magulu anayi ogwiritsa ntchito satellite padoko limodzi la SatCR RF kwa 4 olandila satelayiti osavomerezeka.
LNB yanthawi zonse ndi Low Noise Block, yosinthira Ku Band 10.7GHz~12.75GHz RF kapena C Band 3.7GHz~4.2GHz RF kukhala 950MHz~2150MHz IF ya sat receiver. Pa SMATV pa fiber system, transmitter imodzi imatembenuza LNB IF kukhala CHIKWANGWANI. Pambuyo pa fiber optic amplifier ndi PON, chizindikiro cha optic chimagawidwa ku mabanja mazana kapena masauzande a FTTH. Panyumba iliyonse yokhala ndi chingwe cha fiber, cholandila chimodzi chowoneka bwino chimatembenuza ulusi kukhala Sat IF. Kulowetsa kwa Fiber kumatembenukira ku 950MHz ~ 2150MHz IF kutulutsa kwa wolandila.
Satellite Optical receiver imagwira ntchito yofanana ndi LNB wamba, ndi "virtual" LNB kunyumba. Satellite Optical receiver imatha kutchedwa Optical LNB kapena Fiber LNB.
LNB yokhazikika imayikidwa pa mbale moyang'ana kumwamba. Optical LNB imayikidwa kulikonse kunyumba komwe ulusi umapezeka. Zomwe zili mu LNB imodzi yokhazikika zitha kupangidwanso mpaka 500K Optical LNBs.
LNB yokhazikika imakhala ndi ma polarities ofukula kapena opingasa (13V/18V) ndi bandi yapamwamba kapena yotsika (0Hz kapena 22KHz). Pogwiritsa ntchito ukadaulo wa CWDM/DWDM, kuwala kwa LNB kumatha kukhala ndi doko la RF lothandizira DiSEqC.
GLB3500E-2R ili ndi 1310nm/1490nm/1550nm WDM njira yolumikizira kuti mugwire ntchito limodzi ndi GPON ONU mu pulogalamu iliyonse ya FTTH, yomwe imalola kuti zolembedwa za satellite za Quattro LNB ziyikidwe mudongosolo la GPON.
Zina:
•High Linearity Photodiode.
•SC/APC fiber input.
•Kuwala kwa AGC: -6dBm ~ +1dBm.
•Doko limodzi la SatCR RF lofikira mpaka 4 olandila osakhazikika m'nyumba imodzi.
•Sat RF Ban: 950 ~ 2150MHz.
•CE yovomerezeka.
