ʻO ke kaula coaxial (ma hope aku i kapa ʻia ʻo "coax") he uwea i loaʻa i ʻelua coaxial a me insulated cylindrical metal conductors e hana i kahi ʻāpana kumu (coaxial pair), a laila hoʻokahi a i ʻole nā hui coaxial.Ua hoʻohana ʻia e hoʻouna i nā ʻikepili a me nā hōʻailona wikiō no ka manawa lōʻihi.ʻO ia kekahi o nā media mua e kākoʻo iā 10BASE2 a me 10BASE5 Ethernet, a hiki ke hoʻokō i ka 10 Mb/s hoʻoili o 185 mau mika a i ʻole 500 mau mika.ʻO ka huaʻōlelo "coaxial" ʻo ia ke ʻano o ka mea hoʻokele waena o ke kaula a me kāna papa pale i ka axis like a i ʻole ke kiko waena.Hiki i kekahi mau kaula coaxial ke loaʻa i nā ʻāpana pale he nui, e like me nā kaula coaxial pale ʻehā.Aia i loko o ke kaula he ʻelua papa o ka pale, a ʻo kēlā me kēia papa o ka pale i haku ʻia me ka alumini foil i ʻōwili ʻia me ka uea.ʻO kēia hiʻohiʻona pale o ke kaula coaxial e loaʻa iā ia ka ikaika anti-electromagnetic interference a hiki ke hoʻouna i nā hōʻailona kiʻekiʻe ma kahi lōʻihi.Nui nā ʻano like ʻole o nā kaula coaxial e kākoʻo ana i ka nui o nā noi ʻoihana, e like me ke kamaʻilio satellite, ka ʻoihana, ka pūʻali koa a me nā noi moana.ʻO nā ʻano maʻamau ʻekolu o nā kaula coaxial non-industrial ʻo RG6, RG11 a me RG59, ʻo ia ka RG6 i hoʻohana pinepine ʻia i nā polokalamu CCTV a me CATV i nā ʻoihana ʻoihana.ʻOi aku ka mānoanoa o ke alakaʻi kikowaena o RG11 ma mua o RG6, ʻo ia hoʻi, ʻoi aku ka haʻahaʻa o kona hoʻokomo ʻana a ʻoi aku ka lōʻihi o ka hoʻouna ʻana i ka hōʻailona.Eia nō naʻe, ʻoi aku ke kumukūʻai o ke kaula RG11 mānoanoa a ʻaʻole hiki ke hoʻololi ʻia, ʻaʻole kūpono ia no ka hoʻopili ʻana i nā noi kūloko, akā ʻoi aku ka maikaʻi no ka hoʻokomo ʻana i waho a i ʻole nā loulou kuamoʻo pololei.ʻOi aku ka maʻalahi o ka RG59 ma mua o ka RG6, akā he kiʻekiʻe kona poho, a ʻaʻole i hoʻohana ʻia i nā noi ʻē aʻe koe wale no nā noi wikiō analog haʻahaʻa haʻahaʻa haʻahaʻa (nā pahu kiʻi hope i nā kaʻa) me kahi mamao pōkole a palena. wahi slot.ʻOkoʻa ka impedance o nā kaula coaxial - maʻamau 50, 75, a me 93 Ω.ʻO ka 50 Ω coaxial cable he mana kiʻekiʻe ka mana hana a hoʻohana nui ʻia no nā mea hoʻolele lekiō, e like me nā lako lekiō amateur, radio band civil (CB) a me ka walkie-talkie.Hiki i ke kaula 75 Ω ke mālama maikaʻi i ka ikaika hōʻailona a hoʻohana nui ʻia e hoʻopili i nā ʻano mea hoʻokipa like ʻole, e like me nā mea hoʻokipa kelepona (CATV), nā kīwī wehewehe kiʻekiʻe a me nā mea hoʻopaʻa wikiō kikohoʻe.Ua ho'ohana 'ia ka uwea coaxial 93 Ω ma IBM mainframe network i ka makahiki 1970 a me ka 1980 mua, me ka li'ili'i loa a me ka pipi'i.ʻOiai ʻo 75 Ω coaxial cable impedance e ʻike pinepine ʻia i ka hapa nui o nā noi i kēia lā, pono e hoʻomaopopo ʻia ʻo nā ʻāpana āpau o ka ʻōnaehana coaxial cable e like me ka impedance e pale aku i ka noʻonoʻo ʻana i loko o ka wahi pili i hiki ke hōʻemi i ka hōʻailona a hōʻemi i ka maikaʻi wikiō.ʻO ka hōʻailona kikohoʻe 3 (DS3) i hoʻohana ʻia no ka lawelawe hoʻouna ʻana o ke keʻena kikowaena (ʻike ʻia ʻo T3 laina) hoʻohana pū i nā kaula coaxial, me 75 Ω 735 a me 734. ʻO ka mamao o ka uhi ʻana o 735 uwea a hiki i 69 mika, ʻoiai kēlā o 734 uwea a hiki i 137 mika.Hiki ke hoʻohana ʻia ke kaula RG6 e hoʻouna i nā hōʻailona DS3, akā pōkole ka mamao o ka uhi.
Loaʻa i ka hoʻolālā DB nā pūʻulu piha o ke kaula coaxial a me ka hui, hiki ke kōkua i ka mea kūʻai aku e hoʻohui i kā lākou ʻōnaehana ponoʻī.E kaomi i ka loulou ma lalo nei e koho i nā huahana.Aia mau kā mākou hui kūʻai no ʻoe.
Ka manawa hoʻouna: Jan-17-2023