GLB3500MT Terr TV kunye neSat Fiber Optic Transmitter
Ingcaciso yeMveliso
I-GLB3500M yimodyuli 45~2600MHz RF phezu kwekhonkco lefayibha, isasaza amajelo eTV eTerestrial kunye ne-L-Band RF enye ngaphezulu kwefayibha enye.
ISathelayithi yoSasazo oluNgqo (i-DBS) kunye neNgqo kwiKhaya (DTH) yeyona ndlela idumileyo yokonwabela iTV yesathelayithi kwihlabathi jikelele.Ukwenza oko, i-antenna yesathelayithi, intambo ye-coaxial, i-splitter okanye i-multi-switcher kunye ne-satellite receiver iyimfuneko.Nangona kunjalo, ukufakwa kwe-eriyali yesathelayithi kunokuba nzima kubabhalisi abahlala ezindlini.I-SMATV (i-satellite mater antenna TV) sisisombululo esihle kubantu abahlala kwisakhiwo okanye kuluntu ukuba babelane ngesitya esinye se-satellite kunye ne-antenna ye-TV yomhlaba.Ngentambo yefiber, i-SMATV RF isignali inokuhanjiswa kwi-30Km kude okanye isasazwe kumagumbi angama-32 ngokuthe ngqo, ukuya kuma-320 okanye angama-3200 okanye amagumbi angama-32000 nge-GWA3530 fiber optic amplifier.
I-GLB3500M inemodyuli yothumelo ye-GLB3500MT kunye nemodyuli yomamkeli we-GLB3500MR.Imodyuli yothumelo ye-GLB3500MT inezibuko elinye okanye ezimbini zeRF ngelixa i-GLB3500MR inezibuko elinye le-RF yokuphuma.Ngomgca ophezulu we-1550nm we-laser ye-DFB engapholiswanga, i-photodiode kunye nengxolo ephantsi ye-RF yokulawula ukufumana isekethe, i-GLB3500MT inokunikezela ngezitishi ze-TV ezikumgangatho ophezulu kunye ne-RF yesathelayithi phezu kwefayibha kubabhalisi abambalwa ngokuthe ngqo okanye amawaka ababhalisile be-FTTH nge-EDFA.Nge-1310nm/1490nm/1550nm inketho ye-WDM, i-GLB3500M inokufaka i-L-Band+TV RF phezu kweGPON/GEPON.Ngaphandle kwenguqulelo yeemodyuli, i-GLB3500M inokuba ne-19”1RU inguqulelo xa iceliwe.Ifayibha kwinguqulelo yendlu yeplastiki yendlu ye-GLB3500MR yi-GFH2000 i-LNB yokubona, apho umrhumi we-FTTH efuna nje i-fiber enye kwaye akhuphe iimpawu zesathelayithi kumagumbi aliqela kusapho.
Ezinye iimpawu:
• I-aluminiyamu ediyiweyo yendlu yesamente.
• Igalelo le-RF enye edityanisiweyo kunye ne-bandwidth: 45 ~ 2600MHz okanye.
• Amagalelo amabini ahlukeneyo eRF, aquka:
-Igalelo leTV enye yeTerestrial, i-bandwidth: 174 -806 MHz.
-Enye igalelo le-LNB RF, i-bandwidth: 950MHz ~ 2150MHz (13V okanye i-18V DC ukhetho lwe-LNB ngesicelo).
• Izibuko le-RF enye.
• ILinearity ephezulu ye-1550nm engapholiswanga ye-DFB Laser kunye ne-Photodiode.
• Ingxolo ephantsi ye-RF Gain Control circuit.
