GFH2009 RFoG FTTH Micronode
Mafotokozedwe Akatundu
RFoG amatanthauza "kuthamanga kwa wailesi pagalasi". Muyezo waukadaulo umatulutsidwa ndi SCTE mu chikalata SCTE-174-2010, chomwe chimatanthawuza njira yophulika ya CATV yobwerera njira ya laser kuyatsa ndi kuzimitsa pamene njira ziwiri zowonera zimalandira chingwe cha modemu kumtunda. Phokoso la njira yobwerera ndilo vuto lalikulu la njira ziwiri za CATV. Ma modemu onse a chingwe kapena phokoso lamtundu wa CATV amatumizidwa ku Headend. Mu RFoG PON system, RFoG micronode yolumikizana ndi modemu yogwira ntchito imayatsidwa pomwe ma RFoG ma micronode ena azimitsidwa. Pali chizindikiro chimodzi chokha cha RFoG micronode yobwerera ku CMTS, maphokoso ochepa kwambiri kuposa machitidwe anthawi zonse a CATV.
Popeza njira zambiri zomangirira pa Docsis 3.0 ndi Docsis 3.1 system, padzakhala nkhani ya OBI (Optical Beat Interference) chifukwa cha ma laser awiri kapena kupitilira apo amafika pa photodiode imodzi nthawi imodzi. Kuti mupewe OBI, payenera kukhala mafunde osiyanasiyana a laser pa RFoG Micronode mu dongosolo lomwelo la PON.
RFoG Micronode imathandizira ntchito za CMTS ndi Cable Modem kusamuka kuchokera ku HFC kupita ku PON "Fiber kupita kunyumba".
GFH2009 RFoG MicroNode idapangidwa kuti izilandila 1550nm kuwulutsa RF kapena IP HD kanema kuchokera ku Passive Optical Network (PON) ndikutumiza ma siginecha a modemu okwera pa 1610nm kapena kutalika kwina kwa CWDM. GFH2009 imathandizira kutumiza kwa RF chizindikiro chophulika, kulola modemu imodzi ya chingwe kulumikizana ndi CMTS panthawi ya TDMA. GFH2009 imatulutsa mautumiki osiyanasiyana a RF. GFH2009 idapangidwa kuti izithandizira DOCSIS2.0, DOCSIS3.0 ndi DOCSIS3.1.
Zina:
• Compact Aluminium Housing.
• 1002/1218MHz njira yakutsogolo RF bandiwifi.
• 17dBmV RF kutulutsa kwa FTTH.
• ALC imagwira ntchito pa -7dBm~+1dBm kuyika kwa kuwala.
• 5~42MHz/85MHz/204MHz bweretsani bandiwifi ya RF.
• Sinthani RF pa 1310nm kapena 1610nm DFB laser ikugwira ntchito pophulika.
• Njira yotsika mtengo ya CWDM yobwerera njira ya OBI yaulere.
• Kuwonetsa kwa LED kutsogolo ndikubwezeretsa mawonekedwe ogwirira ntchito.
• Chitetezo cha 6KV Surge.
• Mphamvu ya 12V DC padoko la RF.
