Ikude kangakanani intambo ye-coaxial inokulahlekelwa ngumqondiso?

Xa sikhwela phantsi ukuze sibukele iinkqubo zethu zeTV esizithandayo okanye sitsibe kwi-intanethi - kwaye njengam, uziva ngathi la malungelo oluntu emihla ngemihla akhona ukususela ekuqaleni kwempucuko - ehlekisayo ukubuyisela umva kubo bonke ubuchwepheshe obungena kwizinto. Intambo yeCoaxial -Intambo yeCoaxial yinxalenye ebaluleke kakhulu kulonwabo lwethu kunye noqhagamshelo kwi-intanethi. 

Intambo ye-coaxial luhlobo olwahlukileyo locingo. Iqulathe ucingo oluphakathi olubiyelwe kwikhaka Olu yilo luluncedo kakhulu kuba lugcina uphawu luqinile kwaye lucacile. Kagakanani intambo ye-coaxial uphawu ugcine umfanekiso ocacileyo? Ewe, makhe sijonge ngokulandelayo. 

Kutheni iiCables Coaxial ziwisa umqondiso?  

Zonke iintambo zixhomekeke ekuthotyweni komqondiso, kwaye intambo ye-coaxial ayinjalo. Intambo ende enophawu lokuthumela olubuthathaka, okuthetha ukuba ayinakusebenza ngokufanelekileyo. Oko ikukuthi intambo ye-coaxial inokuphulukana ne-echo yophawu, enokukhokelela kumdlalo weTV okumgangatho ophantsi okanye i-intanethi ecothayo. 

Kukho izinto ezininzi ezibonisa ukuba umqondiso uya kulahleka kangakanani. Into yeyokuba iindidi ezahlukeneyo zikhona ngokuxhomekeke kubude, uhlobo lwesiginali esiyihambisayo kunye nokuba ulunge kangakanani umgangatho wentambo. Umzekelo, kuyathakazelisa ukubona ukuba iisignali eziphezulu zefrikhwensi zinoluhlu olungaphantsi kakhulu kunezo ezisezantsi. Xa unomqondiso wefrikhwensi ephezulu, unethuba eliphezulu lokuba ngaphantsi kobukhulu kumgama omde. 

Yintoni ubude besignali ye-coaxial cable?  

Inkcazo ebaluleke kakhulu nge-coaxial cable ngumgama wayo. Intambo yobude obukhulu inokunciphisa umqondiso. Intambo ye-coaxial ingathumela ngokubanzi imiqondiso kumgama weemitha ezingama-500 (iinyawo eziyi-1,640) ngelixa igcina amandla omqondiso. Kodwa, ewe, lo mgama unokwahluka ngokuxhomekeke kumgangatho wentambo kunye nezinye izinto ezifana nokuba loluphi uhlobo lwesiginali eqhutywa phezu kwayo. 

Umgangatho ophezulu wentambo ye-coaxial inokugcina amandla ayo omqondiso ixesha elide ngobude. Oku kwakamsinya okanye kamva kwenza buthathaka uphawu, nangona kunjalo ukuba intambo ayiphumeli kakuhle inokwenzeka ngokukhawuleza. Ngaloo ndlela kufuneka sinakekele umgangatho we indibano yentambo ye-coaxial sisebenzisa. 

Yintoni ilahleko yomqondiso? 

Ngoku, intambo nganye inomda wayo wokuba ingakanani na isignali evumelekileyo ukuba ilahlekelwe - oku kubizwa ngokuba "ngumda wokulahleka komqondiso." Intambo ye-coaxial inomda kwaye inokulahlekelwa ngumqondiso omkhulu ngaphambi kokuba ibe buthathaka kakhulu ukuhambisa uphawu olucacileyo. 

Ngekhebula le-coaxial, umda wokulahlekelwa komqondiso wemitha ye-100 (okanye i-328 unyawo) ubude bekhebula buhlala bujikeleze i-20dB (i-decibels). Ukuya kuthi ga kwi-20dB: Ukuba ilahleko yesiginali ingaphezulu kwe-20dB ithetha ukuba ayifumani kakuhle isignali ye-antenna, kwaye ke iTV yethu iya kuba ngumfanekiso ongekho mfiliba okanye ngamanye amaxesha isantya se-intanethi sinokuba sisezantsi kwindawo ethile. 

Umba womgama kuMgangatho weSiqondiso

Siyazi ukuba ukuba sandisa umgama, umgangatho womqondiso womsebenzi we-coaxial cable uyachaphazeleka, kodwa kuwuphi umda? Ukwenza umzekelo, makhe ndibonise umzekelo wobomi bokwenyani. Masithi uneemitha ezingama-50 ubude bentambo ye-coaxial (iinyawo ezingama-164) Kwelinye icala lentambo yokubaleka, siqala ngomqondiso owomeleleyo kumandla angama-100%. Nangona kunjalo, uphawu luhamba phantsi kunye nekhebula kwaye ngelixa lifikelela ekupheleni linokuthi lilahlekelwe yi-50%, okanye nangaphezulu. Le lahleko inkulu yayanele ukwenza imifanekiso yethu ye-TEVISION ibe mfiliba okanye i-pixelated ngexesha leenkqubo ezibukhoma kwaye oko kuyadimaza kakhulu. 

Gcina umqondiso owomeleleyo kumgama omde

KULUNGILE, emva koko Ugcina njani uMqondiso xa usebenzisa iintambo ezinde zecoaxial? Kulapho ii-boosters okanye i-amplifiers zingena khona. Eyona nkcazelo isisiseko ye-broadband signal booster kukuba sisikhulisi esinokubekwa ngamaxesha aqhelekileyo acwangcisiweyo ecaleni kwentambo yokubaleka ukunceda ukunyusa umqondiso. Oku kuvumela umqondiso ukuba uhambe umgama omkhulu ngaphandle kokulahlekelwa amandla amaninzi. 

Inketho elandelayo kukusebenzisa i-coaxial wire elungileyo endaweni yoko. Okukhona uphezulu umgangatho wentambo, kokukhona encipha amathuba ayo amandla omqondiso elahleka. Iintambo ezingcono ziqhele ukwakhiwa ukuze ziphile kumgama omde ngelixa zigcina umgangatho womqondiso olungileyo. 

Ukufakela okufanelekileyo kunye nokugcinwa rhoqo kunokugcina isignali kumanqanaba aphezulu amandla. Ukhuseleko olungcono lunikezelwa ngokukhusela ngokusemgangathweni ngokufanelekileyo kwentambo ye-coaxial. Nanini na xa kukho ukunciphisa okanye ukulimala kwekhebula, kufuneka kulungiswe ngokukhawuleza ukugcina umqondiso ucacile. 

Ewe, ukushwankathela ngegama, intambo yeCoaxial: ukuzonwabisa kunye nokwenziwa kokusetyenziswa kwiinkonzo zethu ze-intanethi. Kodwa ukuba ukude 30 ukuya 50 iinyawo ilahlekelwa ngumqondiso. Unokufunda iintlobo zeenzuzo kwiifrikhwensi ezahlukeneyo, ukuba ungawuyeka kangakanani umqondiso ukuba siwe ngaphambi kokuba uphelele, kunye nezinye iinkcukacha eziya kukuvumela ukuba wenze isignali yakho yeSOTA ibe namandla kangangoko. Ezi zizisombululo kuzo zonke ezi ngxaki kwaye sinokuqhubeka nokubukela iinkqubo zethu zeTV esizithandayo kwaye siqhagamshele kwi-intanethi ngaphandle kweengxaki zesakhelo okanye kumgangatho ophantsi.