Indlela crimp pair osontekile-Ethernet 100 Mb

Kakade nge obhekwe amakhompyutha kuqala wafika isidingo ngendlela elula futhi fast bezokuxhumana phakathi kwazo. Perforated amashidi, la mandla kazibuthe opholile kanye amadiski (kuqala nezimo bese ngesandla esiqinile), abezindaba optical siqala kancane ukuxazulula inkinga, kodwa ukusetshenziswa yabo ine eyodwa ethile - kwakudingekile ngandlela-thile ukuze afeze yenethiwekhi ekuletheni idatha kwikhompyutha target, ngakho " lula "kwaba okunemibandela kakhulu.

Akumangazi-ke ukuthi Eighties kwakukhona kungenzeka sokudlulisela ulwazi phakathi kumadivayisi digital ngokusebenzisa inhlangano ukuxhumana kwenethiwekhi phakathi kwabo (-Ethernet). Ngo-computer ngamunye usungula adaptha ekhethekile (NIC), okuyinto uxhuma ikhebula le-coaxial ixhunyiwe. Lokhu kwenza ukuba ukudlulisa idatha ngqo, ngokuhambisana-Ethernet 10BASE2 okujwayelekile (nezinye izinhlobo zaziwa kancane kahle hhayi kabanzi etholakalayo). Nokho, esiphelele somgomo odingekayo ukuthi impedance ikhebula kwaba ohms 50, okwenza kube nzima ukuqeda umonakalo ngangokunokwenzeka.

Njengoba sekunama-ngaphezulu yesimanje, ngokuqinile-Ethernet, ukusekela ukudluliswa isheshisa ukuba megabits 100, ikhebula coaxial yathathelwa indawo inkulumo pair elisontiwe. Ngaphezu ukunciphisa izindleko ikhefu kunoma yiziphi cores lokkhu ukusonta futhi alulame ingxenye. Uyini pair ezisontekile? Lokhu ngazimbili multiple of babashayeli angawodwa basonta ngazimbili kanye eqoqwe igobolondo olulodwa. Umqhubi kungenziwa wahlala wonkana, futhi ehlanganisa zethusi izinwele esihle. Inketho yokuqala - isiqu ngokuvamile lisetshenziswa ukuze kwakhiwe izindonga ukuze ezithengisa wokusabalalisa. Isinyathelo plexus pair ngamunye uhlukile, okuyinto kunciphisa crosstalk. Izintambo zihlukaniswa umbala ukwahlukanisa, ngakho "ibhaza" akudingekile.

Ngezinye izikhathi nawu umbuzo, uyini intambo patch. Kuyinto ikhebula ngokuxhuma ne izixhumi kuphelile. Ngokuvamile, ubude kukhawulwe 5 m, ngisho i standard ehhovisi TSB-75 kuyinto umkhawulo iyasuswa. Uma ufuna ukuxhuma ama-computers amabili komunye nomunye, intambo patch angathengwa ngasiphi esitolo computer.

By endleleni, njengoba umthetho, lolu hlobo ikhebula "basonta pair". futhi umthengi ayidingi ukucabanga indlela crimp pair nesisontekile, ngoba nezixhumi kakade exhunywe ngendlela ethile (ngokuvamile PC PC-kuya-, cross-ukuxhuma noma 'crossover'). Qaphela ukuthi kumadivayisi eziningi zanamuhla kuzihlonzekele uhlobo uxhumano futhi ulungise kuso. Nokho, ngezinye izikhathi kufanele wena ukuba baqonde indlela ukuba crimp pair elisontiwe. Ngokwesibonelo, e esizikalayo ukuhlangana LAN.

Kulokhu-ke kubalulekile ukuba ufunde izinkundla ezifanele futhi Ukucaciswa. By the way, indlela cindezela umbhangqwana nesisontekile, akukho eziyinkimbinkimbi - nje ukunakekelwa kancane kanye nokunemba.

Ungathenga ekhethekile crimping impintshisi, intengo ngempela kufinyeleleke. Nakuba ngekhono ngenxa, konke ongakwenza kungaba ngisho izipikili.

Ngakho, indlela crimp pair ezisontekile? Kudinga ikhebula ngokwayo (i ezisontekile pair isigaba 5 at 100 Mbit nokukhawulela ibanga - cishe 130 m) kanye ezimbili RJ-45 Isixhumi. Sika onqenqemeni intambo, bakubheka futhi ukusika umonakalo. Ukususa olwelwesini ukwahlukanisa. Ubude le ngxenye incike uhlobo isixhumi: the yokugcina kumelwe silungise ikhava ingxenye hhayi hang kwamanye babashayeli. Imibhangqwana sicacise futhi qondanisa (kwakufanele bakhulume-1 cm). Ngokuhambisana scheme (bona ngezansi) ukufaka izintambo ku-isixhumi. Nge izibungu ukuxhuma izintambo kubo.

Kunezindlela ezimbili crimp kukhona - T568A (inkampani Siemon), kanye T568B (AT & T). kuvame kakhulu ukuba kusetshenziswe uhlobo lwesibili. Isignali ye kuqala kuthiwa ngocansi phezu namabhuzu "white-green" futhi "simhlophe-orange", futhi u-olintshi futhi izintambo eziluhlaza. Eyesibili pair of "white-orange" futhi "oluhlaza-mhlophe" nomhlophe kanye oluhlaza.

Ukuxhuma amadivaysi ahlukahlukene (ihabhu-PC) isetshenziswa indlela efanayo zezakhi kusuka zombili. Uma udinga ukuxhuma ama-computers amabili noma ezimbili ihabhu, ukuthi ngakolunye uhlangothi ikhebula ezifuywa ngu T568A, futhi ngakolunye - kwi T568V. Visual wiring imidvwebo ingatholakala kalula imithombo efanele kuwebhu.

UMkhandlu "lazy": ukwakha inethiwekhi okulula PC ezimbili ungakwazi ukuthenga ngomumo eyenziwe patch nentambo ikhebula "pair ezisontekile" ubude oyifunayo. Sika intambo patch phakathi, ukuhlanza imikhawulo babashayeli kwalo futhi ikakhulu ikhebula twist (solder) core ngokuvumelana uphawu lwemibala. Ngci. Le isixazululo isebenza kahle at amabanga afika ku-140 ubude.