I-GTC250 Terrestrial TV Frequency Converter
Incazelo Yomkhiqizo
I-GTC250 Terrestrial TV Converter iyisiginali ye-TV yasemhlabeni ehlelekayo, isihlungi, isihlanganisi, isiguquli sesiteshi, isilinganisi, nesikhulisi. Ilungele uhlelo lokusebenza lwe-antenna lapho amasiginali we-TV yasemhlabeni angakhethwa, asetshenzwe, ahlungwe, ahlanganiswe, alingane, futhi akhuliswe ngesikhathi esisodwa. Nge-LCD eshumekiwe nephedi yokhiye, i-GTC250 ikulungele ukukhetha amashaneli okukhiphayo nokulungisa izinga le-RF yokuphumayo.
I-GTC250 inokufakwayo okukodwa kwe-FM, okokufaka okune kwe-VHF/UHF, okuphumayo kwe-RF okukodwa kanye nembobo yokuhlola yokuphuma kwe-RF eyodwa -20dB. Kumasiginali we-DVB-T ku-PAL-B/G, isiteshi se-VHF sinomkhawulokudonsa ongu-7MHz kanti isiteshi se-UHF sinomkhawulokudonsa ongu-8MHz, kungcono ukuguqula isiteshi se-VHF sibe isiteshi se-VHF kanye ne-UHF siye esiteshini se-UHF kuphela, lapho isiteshi se-8MHz DVB-T UHF sibe ngu-7MHz Isiteshi se-DVB-T VHF singase sibe nenkinga yokulahlekelwa okuqukethwe.
Okuqukethwe okuyinhloko kwanoma iyiphi i-headend encane kuvela kumasathelayithi, i-inthanethi, i-terrestrial TV namakhamera endawo. I-Mini-head kufanele ikhethe ividiyo efunwayo kwisathelayithi ne-inthanethi, ihlanganise ividiyo ekhethiwe ku-TS entsha. Njengoba ama-TV amaningi ahlakaniphile angathola amasignali edijithali e-QAM RF ngokuqondile, kwenza izinzwa ezengeziwe kubaqhubi be-TV abathengisa ukuguqula i-DVB-S/S2 ibe yi-QAM, baguqule i-IP ibe yi-QAM futhi baguqule amakhamera endawo abe yi-QAM. Noma kunjalo, i-TV yasendaweni ihlale idumile ngokuqukethwe kwayo eduze kwababhalisile. I-QAM RF ehlanganisiwe ingasatshalaliswa kalula ngekhebula le-coaxial (noma i-fiber) kunoma yiziphi izakhiwo zokuhlala ngendlela eyongayo, isakaza i-SD kanye HD amavidiyo ngaphandle kwe-STB eyengeziwe ngaphambi kwe-smart TV.
