Lefatšeng le potlakileng la theknoloji ea sejoale-joale, mohopolo oa modulator o bapala karolo ea bohlokoa ts'ebetsong ea lisebelisoa le lits'ebetso tse fapaneng.Li-modulatorske likarolo tsa bohlokoa tse sebelisetsoang ho fetola le ho laola matšoao mefuteng e mengata ea lits'ebetso tse kenyeletsang likhokahano, khaso le phetiso ea data. Ha thekenoloji e ntse e tsoela pele le ho ntlafala, bohlokoa ba li-modulator ho tsamaisa likhokahano tse sebetsang hantle le tse sebetsang bo ke ke ba feteletsoa.
Ho elektronike le likhokahanong tsa mehala, modulator ke sesebelisoa kapa potoloho e ikarabellang bakeng sa ho khouta tlhahisoleseling ho lets'oao la thepa bakeng sa phetiso. Ha e le hantle e fetolela tlhahisoleseling ho tsoa sebopehong sa eona sa pele ho se etsa sebopeho se loketseng ho fetisoa ka mokhoa o itseng. Ts'ebetso ena e bohlokoa ho netefatsa hore tlhahisoleseling e phatlalatsoa le ho amoheloa ka nepo moo e reretsoeng ho ea teng.
E 'ngoe ea lits'ebetso tsa mantlha tsa li-modulator ke likhokahano tsa mehala, moo li sebelisetsoang ho fetisa matšoao a lentsoe, data le video holim'a marang-rang a fapaneng a puisano. Litsamaisong tsa likhokahano tsa dijithale, li-modulator li sebelisoa ho fetolela data ea dijithale hore e be matšoao a analog a ka fetisoang ka mocha oa puisano oa analog. Ts'ebetso ena e lumella phetiso e nepahetseng ea tlhaiso-leseling ea dijithale holim'a meaho e teng ea analog, e nolofalletsang phetiso ea data e potlakileng le likhokahano tse tšepahalang.
Ho feta moo,li-modulators li phetha karolo ea bohlokoa khasong le boithabisong, li sebelisoa ho fetiseng mats'oao a thelevishene le seea-le-moea. Ka mohlala, liphatlalatso tsa thelevishene li itšetlehile ka li-modulator ho fetola melaetsa ea molumo le video hore e be sebopeho se ka fetisoang ka maqhubu a seea-le-moea kapa ka marang-rang a cable le sathelaete. Ka mokhoa o ts'oanang, liphatlalatso tsa seea-le-moea li sebelisa li-modulator ho kenyelletsa mats'oao a molumo ho maqhubu a tsamaisang hore a fetisetsoe ho ba amohelang.
Ntle le likhokahano tsa mehala le khaso, li-modulator li bohlokoa hape lefapheng la phetiso ea data le marang-rang. Marang-rang a likhomphutha, li-modulator li sebelisoa ho fetolela data ea dijithale hore e be matšoao a motlakase kapa a optical bakeng sa phetiso ea liteishene tsa puisano tse nang le mehala kapa tse se nang mohala. Sena se nolofalletsa phapanyetsano ea tlhahisoleseding pakeng tsa lisebelisoa tse hokahaneng le litsamaiso, ho nolofatsa ts'ebetso e nepahetseng ea marang-rang a morao-rao a data.
Tsoelo-pele ea theknoloji ea li-modulator e boetse e lebisitse ho nts'etsopele ea mekhoa e rarahaneng ea ho feto-fetoha ha molumo e ka ntlafatsang phetiso le kamohelo ea matšoao. Theknoloji e kang amplitude modulation (AM), frequency modulation (FM), le phase modulation (PM) e atisa ho sebelisoa ho finyella lipuisano tse sebetsang hantle le tse ka tšeptjoang. Merero ena ea ho feto-fetoha ha maemo e khona ho kenyelletsa tlhahisoleseding ho letšoao la mochine ka ho nepahala ho phahameng le ho lumella letšoao hore le fetisetsoe libakeng tse telele ntle le tahlehelo e kholo kapa ho senyeha.
Ha tlhoko ea likhokahano tse potlakileng le phetiso ea data e ntse e hola, karolo ea li-modulator ho theknoloji ea sejoale-joale e ntse e le bohlokoa. Nts'etsopele ea theknoloji e tsoetseng pele ea modulator e butse tsela bakeng sa bokhoni ba puisano bo matlafalitsoeng ho fetisa mats'oao a lentsoe, data le lifitio ntle le tšitiso holim'a marang-rang a fapaneng a likhokahano.
Ka kakaretso,li-modulatorske karolo ea bohlokoa ea thekenoloji ea sejoale-joale ebile e na le karolo ea bohlokoa phetisong e nepahetseng ea tlhahisoleseling ho pholletsa le mecha e fapaneng ea likhokahanyo. Ho tloha likhokahanong tsa mehala le khaso ho isa phetisong ea data le marang-rang, li-modulator li ka pele ho ho nolofalletsa likhokahano tse tšepahalang le tse sebetsang hantle. Ha thekenoloji e ntse e tsoela pele, bohlokoa ba li-modulator ho tsamaisa likhokahano tse se nang moeli le likhokahano li tla tsoela pele ho hola.
Nako ea poso: Dec-14-2023