Coaxial cable (nke a na-akpọ "coax") bụ eriri nke nwere ihe abụọ coaxial na mkpuchi cylindrical metal conductors iji mepụta otu isi (coaxial pair), wee bụrụ otu ma ọ bụ ọtụtụ coaxial ụzọ abụọ.Ejila ya bufee data na akara vidiyo ogologo oge.Ọ bụ otu n'ime mgbasa ozi mbụ iji kwado 10BASE2 na 10BASE5 Ethernet, ma nwee ike nweta 10 Mb / s nnyefe nke 185 mita ma ọ bụ 500 mita n'otu n'otu.Okwu ahụ bụ "coaxial" pụtara na onye na-eduzi eriri USB na oyi akwa mkpuchi ya nwere otu axis ma ọ bụ ebe etiti.Ụfọdụ eriri coaxial nwere ike inwe ọtụtụ ihe mkpuchi mkpuchi, dị ka eriri coaxial nwere mkpuchi anọ.Igwe ahụ nwere ihe mkpuchi abụọ, na mkpuchi mkpuchi ọ bụla bụ nke aluminom nke ejiri eriri waya kechie.Njirimara mkpuchi mkpuchi nke eriri coaxial na-eme ka ọ nwee ikike mgbochi mgbochi elektrọnik siri ike ma nwee ike ibunye akara ngosi ugboro ugboro n'ebe dị anya.Enwere ọtụtụ ụdị eriri coaxial dị iche iche na-akwado ọtụtụ ngwa ọkachamara, dị ka nkwukọrịta satịlaịtị, ụlọ ọrụ mmepụta ihe, ndị agha na ngwa mmiri.Ụdị atọ a na-ahụkarị nke eriri coaxial na-abụghị ụlọ ọrụ bụ RG6, RG11 na RG59, nke RG6 na-ejikarị na CCTV na CATV ngwa na gburugburu ụlọ ọrụ.Onye na-eduzi etiti nke RG11 toro karịa RG6, nke pụtara na ntinye ntinye ya dị ala na ebe nnyefe mgbaàmà dịkwa ogologo.Otú ọ dị, eriri RG11 dị oke ọnụ dị oke ọnụ ma na-adịghị agbanwe agbanwe, nke na-eme ka ọ ghara ekwesị maka itinye ya na ngwa ime, mana ọ dabara adaba maka ntinye n'èzí dị anya ma ọ bụ njikọ azụ azụ ogologo.Mgbanwe nke RG59 dị mma karịa nke RG6, mana ọnwụ ya dị elu, ọ naghị adịkarịkwa eji ya na ngwa ndị ọzọ ma e wezụga maka obere bandwidth, ngwa vidiyo analog dị ala (igwefoto n'azụ n'azụ ụgbọ ala) nwere obere anya na oke. oghere oghere.Ihe mgbochi nke eriri coaxial dịkwa iche iche - na-abụkarị 50, 75, na 93 Ω.Igwe eriri coaxial 50 Ω nwere ikike nhazi ike dị elu ma a na-ejikwa ya maka ndị na-ebusa redio, dị ka akụrụngwa redio amateur, redio Civil band (CB) na walkie-talkie.Igwe 75 Ω nwere ike ịnọgide na-enwe ike mgbaàmà nke ọma ma na-ejikarị jikọọ ụdị ngwá ọrụ dị iche iche, dị ka igwe telivishọn (CATV), ihe ngosi telivishọn dị elu na ihe ndekọ vidiyo dijitalụ.Ejiri 93 Ω coaxial cable na netwọk IBM mainframe na 1970s na mmalite 1980s, yana ngwa ole na ole ma dị oke ọnụ.Ọ bụ ezie na 75 Ω coaxial cable impedance na-ezutekarị n'ọtụtụ ngwa taa, ekwesịrị iburu n'uche na ihe niile dị n'ime usoro eriri coaxial kwesịrị inwe otu ihe mgbochi iji zere ntụgharị uche dị n'ime na ebe njikọ nke nwere ike ime ka mgbaàmà mgbaàmà ma belata ogo vidiyo.Ihe mgbaàmà dijitalụ 3 (DS3) ejiri maka ọrụ nnyefe nke ụlọ ọrụ etiti (nke a na-akpọkwa T3 line) na-ejikwa eriri coaxial, gụnyere 75 Ω 735 na 734. Ogologo mkpuchi nke 735 cable bụ ruo mita 69, ebe nke ahụ nke 734 cable bụ ruo 137 mita.Enwere ike iji eriri RG6 bufee mgbama DS3, mana anya mkpuchi dị mkpụmkpụ.
Nhazi DB nwere nhazi zuru oke nke eriri coaxial na mgbakọ, nke nwere ike inyere ndị ahịa aka ijikọta usoro nke ha.Biko pịa njikọ dị n'okpuru ka ịhọrọ ngwaahịa.Ndị otu ahịa anyị na-anọ ebe a maka gị mgbe niile.
Oge nzipu: Jan-17-2023