Yiziphi isandiso se-usb

Ngezinye izikhathi phambi umnikazi ikhompyutha kunenkinga ukuxhuma idivayisi nge-USB esibonakalayo ukuthi sise ibanga elikhulu esuka ethekwini isixhumi. Omunye isibonelo esiphawuleka kakhulu inhlangano wireless 3G-uxhumano usebenzisa Imodemu. Uma ungawasebenzisi isandiso intambo usb kanye / noma i-antenna yangaphandle, kungase behluleka ukusebenza. Ake sihlole leli phuzu kabanzi.

Zokunweba futhi usb modems ngoba imishini yezokuxhumana engenazo izintambo

Isici esikhethekile salezi amadivayisi wukuthi ezingeni isignali umhlinzeki inethiwekhi ngezinga elikhulu kuncike indawo imodemu. Ngakho, uyaxhunywa ngqo slot khulula, it is kahle ongaphakeme (ikakhulukazi computer umile), lapho amandla isignali incane. Ukuze uxazulule le nkinga, ungafaka antenna ehlukile futhi ixhume kokuhlela imodemu. Mayelana izinga isignali isixazululo esingcono. Nokho, uma ufuna ukuthwala ke le ndlela akuyona okunengqondo kakhulu, ngoba njalo uxhumano adaptha "ikhebula imodemu" Isixhumi yangaphakathi lilimele. Kulokhu, ungakwazi ukuthenga isandiso se-usb. 3G-imodemu, okwesikhashana ophahleni, futhi umqhubi ekhethekile exhunywe kwi-computer, uzinze "Ubamba inethiwekhi". Yiqiniso, endaweni lapho esetshenziswa usb isandiso, akuyona esilinganiselwe. Abanikazi-computer abo siqu esivumelana kakhulu ngosizo wire ukulethe isixhumi itafula flash oshayelayo, amakhamera kanye nokunye.

Design kanye nezici

On emashalofini of imishini computer njalo ungathola izandiso ezinjalo. Ngaphandle, le wire elula ngakolunye uhlangothi lwale okuyinto efakwe USB-uhlobo isixhumi "umama" (yokuxhuma kumadivayisi), futhi ngakolunye - i-plug ekufakweni ethekwini khulula computer. Omunye timphawu letehlukene models - ubude. Inketho isabelomali kuyaqabukela ezingaphezu kuka-2 m. Uma ukhetha kufanele sinake yokuthi ukuthenga "nge inqolobane" akufanele kube. Njengoba, ngokusekelwe imithetho eyaziwayo physics, ngobude umqhubi okwandisa nokugcina voltage njalo kuzokhuphula ukumelana ukudlula kagesi, okuholela ukwehla kwamandla sokudlulisa. Ngamanye amazwi, uma 20 usb isandiso obuphelele 50 cm isebenza kahle nge imodemu, uma idivayisi imitha-2 imodeli kungaba azimisele ohlelweni ukuyeka ngaphandle kokuthola amandla adingekayo ubuncane. Lesi sici kuvamile kubo bonke izinguqulo ithayi. imininingwane ehilelekile Landelayo, sithonye ngqo intengo - lokhu ikhebula. USB isandiso ikhebula, esebenzisa iziqondiso eliphezulu, kuyabiza ngaphezu imikhiqizo ongaphakeme mass. Ngaphandle ukucacisa lokhu, maye, is kungenzeki, ngakho izimpawu engaqondile kungase kubhekwe njengokwelapha umenzi (hhayi China) kanye nezindleko. Ngezinye izikhathi kukhethwa isandiso kuvela ukuthi kukhona onobuhle esakhelwe wire isilinda. Lesi sihlungi kunciphisa umsindo iveni. Ekusebenteni, ukusebenza has cishe awukho umphumela.

izixazululo Akhethekile

extenders Iyatholakala ungahlangana design akhethekile, lapho ekugcineni wire has ezintathu, sidingide esisodwa isixhumi futhi Imigudu ezimbili. onobuhle ezinjalo zihlanganisa nje nezimbobo USB ezimbili, okuyinto kunciphisa iconsi voltage e babashayeli. Lezi izintambo isandiso zisetshenziselwa ukuxhuma zangaphandle ngemoto optical, 3G-modems namanye amadivayisi, befuna ukudla. Ngaphandle kwabo, kungenzeka ukuhlangabezana okuthiwa strip esebenzayo lapho igibele isiginali yokukhulisa izwi wesifunda repeater. Nakuba akufanele silindele izimangaliso, izinqumo ezinjalo bangcono isilinganiso by 20-30% (kuncike lamadivayisi axhumene).