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Iyini ikhebula le-Coaxial?


A ikhebula le-coaxial("coax"ngesiNgisi) ikhebula elenziwe ngama-coaxial, insured insulated cylindrical metal condors akha i-unit eyisisekelo (i-coaxial pair), bese kuba ngababili be-coaxial eyodwa noma amaningi. Isetshenziselwe ukudlulisa amasiginali wedatha nevidiyo isikhathi eside .

It is one of the first media to support 10BASE2 futhi10BASE5 Ethernet, which can achieve 10 Mb/s transmission up to 185 meters or 500 meters, respectively. The term "coaxial" means that the central conductor of the cable futhiits shield have the same axis or center point. Some ikhebula le-coaxials may have multiple shielding layers, such as a four-shielded ikhebula le-coaxial, which contains two layers of shielding, futhieach layer of shielding is composed of aluminum foil wrapped with wire mesh. The shielding characteristics of ikhebula le-coaxial make it have strong anti-electromagnetic interference ability futhican transmit high-frequency signals over long distances. There are many different types of main types of ikhebula le-coaxials that support a wide range of professional applications, such as satellite communications, industrial, military futhimarine applications. The three most common types of non-industrial ikhebula le-coaxials are RG6, RG11futhiRG59, zazoRG6isetshenziswa kakhulu ku-I-CCTV futhiI-I-CATVizicelo ezindaweni zebhizinisi. Umqhubi wesikhungo seRG11mkhulu kunoRG6, which means that its insertion loss is lower futhithe signal transmission distance is longer.

Noma kunjalo, mkhuluIzintambo ze-RG11 are more costly futhivery difficult to bend, which makes them unsuitable for deployment in internal applications, but more suitable for long-distance outdoor installations or straight backbone links. RG59iguquguquka kalula kune-RG6, but its loss is higher. It is rarely used in other applications except for low-bandwidth, low-frequency analog video applications (rear-view cameras in automobiles) with short distances futhilimited wiring space. Izintambo ze-Coaxial also have different impedances-usually 50, 75, futhi93 Ω. 50Ω ikhebula le-coaxials have high power handling capabilities futhiare mainly used in radio transmitters such as amateur radio equipment, civil bfuthiradio (CB) futhiwalkie-talkies. 75 Ω cables can maintain signal strength well futhiare mainly used to connect various types of receiving equipment, such as cable television (I-I-CATV) receivers, high-definition televisions futhidigital video recorders. 93 Ω Cikhebula le-oaxial was used in IBM mainframe networks in the 1970s futhiearly 1980s, with very few applications futhiexpensive. Although the 75 Ω ikhebula le-coaxial impedance is most commonly encountered in most applications today, it is important to note that all components in the ikhebula le-coaxial system should have the same impedance to avoid possible signal loss futhisignal loss at the connection point. Internal reflections that reduce video quality. The digital signal 3 (DS3) signal used in the central office (also known as T3 line) transmission service also uses ikhebula le-coaxials, including 75 Ω 735 type futhi734 type. The 735 type cable has a coverage distance of 69 meters, while the 734 type cable has a coverage distance of 137 meters.Ikhebula le-RG6ingasetshenziswa futhi ukudlulisa amasiginali we-DS3, kepha ibanga lokumbozwa lifushane.