GWT3500 1550nm CATV transmitter
Mafotokozedwe Akatundu
GWT3500 ndi chosinthira mwachindunji 1550nm DFB transmitter ya analogi TV, digito TV ndi CMTS siginecha kugawa ulusi wandiweyani ndi QAM TV Signal mtunda wautali kufala fiber. Wotumiza amagwiritsa ntchito mzere wapamwamba wa DFB laser, njira yamagetsi yamagetsi yamagetsi yamagetsi yamagetsi yamagetsi yamagetsi yamagetsi, limodzi ndi RF yopotoza dera lopangidwa ndi Greatway Technology. Microprocessor yopangidwira imayang'anira momwe ma transmitter amagwirira ntchito ndikuwonetsetsa kuti ntchitoyo ikuyenda bwino. GWT3500 ndi yabwino kwa analogi TV fiber kugawa mkati mwa 20Km ndi QAM TV chizindikiro kufala mtunda wautali mkati 100Km.
Fiber idayambitsidwa kuti ifalitse CATV RF mu 1990s chifukwa cha kuchepa kwake komanso pafupifupi bandwidth yopanda malire. RF to fiber converter ndiye chida chofunikira kwambiri. Ndi amplifier ya phokoso lochepa ndi microprocessor, mphamvu yonse ya RF pa laser imatha kukhazikitsidwa molondola, kuonetsetsa kuti optical modulation index (OMI) ndiyo yabwino kwambiri. Laser yoziziritsidwa ya DFB mu transmitter imatsimikizira kukhazikika kwa mawonekedwe a DWDM optical wavelength pakuwulutsa kapena kuyika ntchito zolumikizirana zocheperako. Pakadali pano utakhazikika DFB laser ali bwino laser RIN (wachibale kwambiri phokoso) ndi khola laser linanena bungwe mphamvu. Ortel-Emcore high linearity yoziziritsa laser ya DFB ndi kapangidwe ka Greatway zatsimikiziridwa kukhala kuphatikiza kopambana. GWT3500 Optical transmitter yakhala ikugwiritsidwa ntchito kwambiri ndi makasitomala ku North America, South America ndi China ndikuchita bwino kwambiri komanso kudalirika kotsimikizika.
Pamodzi ndi Greatway high power Optical amplifier, GWT3500 transmitter imatha kupereka ulusi wamtundu wapamwamba wa TV ku nyumba kapena ulusi kunyumba.
Zina:
• Phokoso lochepa la mzere wa Ortel-Emcore woziziritsa DWDM DFB laser.
• GaAs kapena GaN Technology mpaka 1218MHz.
• Ukadaulo wabwino kwambiri wosokonekera umathandizira CTB, CSO ndi C/N.
• Microprocessor yomangidwa bwino imayang'anira mphamvu ndi kutentha kwa laser.
• Zabwino kwa CATV kuwulutsa RF kapena Narrowcasting RF kuti CHIKWANGWANI.
• Front panel VFD imasonyeza magawo ndi ntchito uthenga.
• Kasamalidwe ka netiweki ya SNMP mwasankha.
• 1310nm kutalika kwa mafunde mwasankha.
