GWT3500 1550nm CATV Transmitter
Incazelo Yomkhiqizo
I-GWT3500 iwumshini oqondile we-1550nm DFB transmitter ye-analog TV, i-TV yedijithali kanye ne-CMTS ebonisa ukusatshalaliswa kwe-fiber dense yendawo kanye ne-QAM TV Signal yokudlulisa imicu yebanga elide. I-transmitter isebenzisa i-laser ye-DFB ephezulu yomugqa, indlela yenqubo yedijithali yedijithali yamandla e-RF, kanye nesekethe ye-RF yokuhlanekezela kwangaphambili eyakhiwe yi-Greatway Technology. I-microprocessor eyakhelwe ngaphakathi iqapha isimo sokusebenza komthumeli futhi iqinisekisa ngokuzenzakalelayo ukusebenza okunethemba. I-GWT3500 ilungele ukusatshalaliswa kwefayibha ye-analog ye-TV ngaphakathi kuka-20Km kanye nesignali ye-QAM TV yebanga elide phakathi kuka-100Km.
I-Fiber yethulwa ukuze idlulise i-CATV RF ngeminyaka yawo-1990s ngenxa yokuncipha kwayo kanye nomkhawulokudonsa ongenamkhawulo. I-RF to fibre converter iyithuluzi elibaluleke kakhulu. Ngesikhulisi somsindo esiphansi kanye ne-microprocessor, amandla e-RF aphelele ku-laser angasethwa ngokunembile, aqinisekise okungcono kakhulu kwe-optical modulation index (OMI). I-laser ye-DFB epholile kusidluliseli iqinisekisa ubude begagasi obubonakalayo be-DWDM bokusakaza noma obufakwe izinsiza ezisebenzisanayo zokusakaza okuncane. Ngaleso sikhathi i-DFB laser epholile ine-laser RIN engcono (umsindo omkhulu ohlobene) namandla okukhipha i-laser azinzile. I-Ortel-Emcore linearity ephezulu epholile ye-DFB laser kanye ne-Greatway design kuboniswe njengenhlanganisela eyimpumelelo. I-GWT3500 optical transmitter isetshenziswe kabanzi ngamakhasimende aseNyakatho Melika, eNingizimu Melika naseChina ngokusebenza okuhle kakhulu nokwethenjwa okufakazelwe kahle.
Kanye ne-Greatway high power Optical amplifier, i-GWT3500 transmitter ingaletha i-fiber yesignali ye-TV yekhwalithi ephezulu esakhiweni noma i-fiber ekhaya.
Ezinye izici:
• Umugqa ophansi womsindo ophezulu we-Ortel-Emcore opholile i-DWDM DFB laser.
• I-GaAs noma i-GaN Technology kufika ku-1218MHz.
• Ubuchwepheshe obuhle kakhulu bokuhlanekezela buthuthukisa i-CTB, i-CSO ne-C/N.
• I-microprocessor eyakhelwe ngaphakathi iqapha ngokunembile amandla okukhipha i-laser nezinga lokushisa.
• Ilungele ukusakaza kwe-CATV i-RF noma i-Narrowcasting RF ku-fiber.
• Iphaneli yangaphambili i-VFD ibonisa amapharamitha wesimo nomyalezo wokusebenza.
• Ukuphathwa kwenethiwekhi ye-SNMP ngokuzithandela.
• 1310nm wavelength ozikhethela.
