Ikhebula le-VGA
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I-Amzwire Izwa Ukwandiswa Kwamavidiyo Okungenamthungo Ngekhebula Eliphezulu Le-VGA 1 kuya ku-2 Splitter, Elisekela Isixazululo se-1080P Sama-PC Nama-TV
Ukucushwa kwe-VGA 1/2 male pair kumelela ukusethwa okukhethekile ngaphakathi kwezintambo ze-VGA (Video Graphics Array), ezivame ukusetshenziswa ukuxhumanisa amakhompyutha, ama-laptop, noma ama-gaming consoles kuma-monitor, ama-projector, noma amanye amayunithi okubonisa. Ihlanganisa izixhumi ezimbili zabesilisa—i-VGA 1 kanye ne-VGA 2—lolu hlelo lusiza ukuhambisana nama-port ahambisanayo abesifazane. Sekungamashumi eminyaka, i-VGA isebenze njengendlela evelele yokudlulisa izimpawu zevidiyo ze-analog, ezibonakala ngekhwalithi yesithombe enhle kanye nokuhambisana okubanzi kwedivayisi. Ukucushwa kwe-VGA 1/2 male pair kunikeza ukuguquguquka ekuxhumeni imishini ehlukahlukene encike kubuchwepheshe be-VGA. Ngokuvamile zihlanganisa izintambo eziningi ze-coaxial ezimbozwe yi-insulation kanye ne-shielding, lezi zintambo zinciphisa ukuphazamiseka, ziqinisekisa ukudluliswa kwezimpawu zevidiyo ezisezingeni eliphezulu. Zihlonyiswe ngamaphini ahambisana ngqo nama-port ahambisanayo, izixhumi zisungula ukuxhumana okuphephile phakathi kwamadivayisi. Lokhu kusethwa kuveza ukuguquguquka ekuxhumeni amadivayisi ahlukene, kusiza ukudluliswa kwezimpawu zevidiyo ze-analog kuwo wonke amapulatifomu ahlukahlukene. Kungakhathaliseki ukuthi kusezilungiselelweni zobungcweti noma ezinhlelweni zokuzijabulisa zasekhaya, ukucushwa kwe-VGA 1/2 male pair kumi njengesixazululo esithembekile sokufinyelela ukuxhumana kwevidiyo okungenamthungo. Ngaphezu kwalokho, ngokwakhiwa kwayo okuqinile kanye nomklamo ojwayelekile, lokhu kucushwa kuthuthukisa ulwazi lomsebenzisi ngokwenza kube lula ukusethwa okulula kanye nokusebenza okuthembekile. Njengoba kufaka ifa elihlala njalo lobuchwepheshe be-VGA, ukucushwa kwe-VGA 1/2 male pair kuyaqhubeka nokusebenza njengetshe lesisekelo emkhakheni wokudluliswa kwevidiyo ye-analog.
Uma usebenzisa ikhebula le-VGA 1/2 besilisa, abasebenzisi bangalindela ukudluliswa kwevidiyo okuthembekile, okusekela izinqumo ngokuvamile kufika ku-1080p (Full HD) noma ngaphansi. Kodwa-ke, kubalulekile ukuqaphela ukuthi ubuchwepheshe be-VGA buyaqhubeka nokunikeza indawo ku-interface yedijithali njenge-HDMI ne-DisplayPort, okunikeza izinqumo ezinhle kakhulu kanye nekhwalithi yesithombe. Ngenkathi ukuthandwa kwe-VGA kuncipha, ukuba khona kwayo okuhlala njalo kuqinisekisa ukufaneleka okuqhubekayo ezimweni lapho imishini yakudala iqhubeka khona. Ikhebula le-VGA 1/2 besilisa livala igebe phakathi kobuchwepheshe obudala nobusha, linikeza izindlela ezithembekile zokuxhuma amadivayisi angenazo izixhumi zedijithali ezihambisanayo. Njengoba ubuchwepheshe buthuthuka, ikhebula le-VGA 1/2 besilisa ligcina ukusebenza kwalo, linikeza abasebenzisi ikhambi elijwayelekile nelithembekile lokuxhuma amadivayisi akudala ngenkathi beshintshela kubuchwepheshe bokubonisa obuthuthukisiwe.
Ikhebula le-VGA, elinekhanda elifakwe i-nickel kanye nendandatho ephindwe kabili kamagnetic, libeka indinganiso entsha yokudlulisa ividiyo ye-analog ngokuqina nokusebenza kwayo okuthuthukisiwe. I-nickel plating ekhanda lekhebula isebenza ngezinjongo eziningi ezibalulekile. Okokuqala, isebenza njengesendlalelo esivikelayo, imelana nokugqwala kanye ne-oxidation, ngaleyo ndlela iqinisekisa ukuxhumana okuhlala njalo kanye nobuqotho besignali ngisho nasezindaweni eziyinselele. Okwesibili, i-nickel plating inikeza ukuhanjiswa okuhle kakhulu, okusiza ukudluliselwa okubushelelezi nokuphumelelayo kwezibonakaliso zevidiyo ye-analog phakathi kwamadivayisi. Ngaphezu kwalokho, ukufakwa kwezindandatho eziphindwe kabili zikamagnetic kuthuthukisa kakhulu ikhono lekhebula lokucindezela ukuphazamiseka kwe-electromagnetic (EMI) kanye nokuphazamiseka kwemvamisa yomsakazo (RFI), okuholela ekukhishweni kwevidiyo okuhlanzekile nokuzinzile. Lezi zindandatho zikamagnetic zihlunga ngempumelelo umsindo ongafuneki kanye nokuphazamiseka okungase kunciphise ikhwalithi yesignali edlulisiwe, okuqinisekisa isithombe esicacile nesicacile kudivayisi yokubonisa.
Ukuhlanganiswa kwekhanda elifakwe i-nickel kanye nezindandatho ezimbili zikagesi ezisebenzisa amandla kagesi kuphakamisa ikhebula le-VGA libe yisisombululo esithembekile nesisebenza kahle kakhulu sokuxhumanisa amakhompyutha, ama-laptop, noma amanye amadivayisi ahambisana ne-VGA kuma-monitor, ama-projector, noma izibonisi. Abasebenzisi bayazuza ekudlalweni kwevidiyo okungaphazanyiswa kanye nekhwalithi yesithombe ephezulu, ngisho nasezindaweni ezisengozini yokuphazamiseka kwe-electromagnetic. Kungakhathaliseki ukuthi isetshenziswa ezindaweni zobungcweti noma kwezokuzijabulisa komuntu siqu, le khebula le-VGA liqinisekisa ukuthembeka nokusebenza okuhle kakhulu, okuqinisa isimo sayo njengengxenye ebalulekile yanoma yikuphi ukusethwa kwe-multimedia.
Ngokuhlanganisa ukwakhiwa okuqinile nobuchwepheshe obuthuthukisiwe, le khebula iqinisekisa ukudluliselwa okungenamthungo kwezimpawu zevidiyo ye-analog, okuholela ezithombeni ezicacile nezicacile. I-nickel plating ekhanda lekhebula inikeza isivikelo ekugqwaleni nasekungcoleni, iqinisekisa ukuxhumana okuhlala isikhathi eside kanye nobuqotho besignali. Ngaphezu kwalokho, amasongo amabili kazibuthe acindezela ngempumelelo ukuphazamiseka kwe-electromagnetic kanye nokuphazamiseka kwemvamisa yomsakazo, okuqinisekisa ukuphuma kwevidiyo okuzinzile.
