GFH1000-KP Qaadaha CATV ee aan awoodda lahayn ee ONU
Sharaxaada Alaabta
GFH1000-KP waa 1550nm awood la'aan CATV fibre ilaa guriga aqbalaha indhaha oo leh 1310nm/1490nm WDM loop out deked.Ka dib ololaha qoto dheer ee fiber-ka, HFC CATV aagga adeega qaabilaadaha indhaha ayaa hoos u dhacaya min 2000 macaamiil, ilaa 500 macaamiil, 125 macaamiil, 50 macaamiil ah iyo hadda hal macaamiil marka fiber guriga la geeyo.Maadaama cod-weyneeye sare oo awood sare ah si weyn loogu isticmaalo baahinta nidaamka PON ee CATV, waxaa suurtogal ah in la isticmaalo soo-dhoweeyaha indhaha ee aan awoodda lahayn ee ka shaqeeya -6dBm ~ -1dBm si loo dhimo FTTH qiimaha dhamaadka iyo isticmaalka tamarta.Dhanka kale, maadaama shaqada intarneetka loo wareejiyo GPON ama XGPON, GHF1000-KP waxay haysataa 45Mhz ilaa 1000MHz ama 1218Mhz oo buuxa RF bandwidth adeega baahinta TV-ga.
GFH1000-KP waxay leedahay hal deked wax gelinta indhaha, hal deked fiber wdm ah iyo hal wax soo saar RF ah.Sida aaladaha qoyska ONU, GFH1000-KP waxay leedahay guryo caag ah oo dabciya.Qalabkan fur iyo ciyaarta si fudud ayaa loogu rakibay guriga ama SOHO (xafiiska yar iyo xafiiska guriga) codsiga.Iyada oo leh photodiode khadka tooska ah oo si fiican loo hagaajiyay, GFH1000-KP wali waxay soo saartaa tayada la aqbali karo ee RF ee TV-ga analogga ah ama dhijitaalka ah ee QAM TV hal ama in ka badan oo TV-ga hal qoys ah.Si ka duwan GFH1000 FTTH CATV qaataha leh gaAs-amplifier ku dhisan, GFH1000-KP aan awood lahayn FTTH CATV qaataha wuxuu ku tiirsan yahay awoodda gelinta indhaha ee EDFA, 1550nm awoodda gelinta indhaha waxaa lagu talin karaa mid hoose sida -6dBm marka calaamada RF waa DVB-CQAM ama -1dBm marka calaamada RF ay tahay TV-ga analogga ah.
Xirmooyinka 1550nm signal bandwidth waxay noqon kartaa 1525nm ~ 1565nm wideband signal optical iyo band cidhiidhi ah 1550nm ~ 1560nm signal indhaha.
WDM waxay taageeri kartaa 1310nm/1490nm GPON joogto ah ama 1270nm/1577nm XGPON ama NGPON2.GFH1000-KP waxay awood u siinaysaa dhinac kasta oo saddexaad GPON ONU oo leh shaqada RF ee baahinta kanaalada RF.
Sifooyin kale:
• Guryaha dib u dhiga ololka balaastiga ah.
• Photodiode Linearity High ee CATV RF.
• 45 ~ 1000MHz (hoos) Wax soo saarka RF.
Awood DC ma laha naqshad dhaqaale dadban.
• 1310nm/1490nm Optical Bypass Port ilaa ONU.
• WDM waa la cusboonaysiin karaa oo lagu daraa 1270nm/1577nm deked milicsiga XGPON ONU.
