1. Ukuqonda Imikhawulo Yobude Bekhebula Le-Ethernet

Lapho usetha inethiwekhi enezintambo, omunye wemibuzo evame kakhulu abantu abayibuzayo uthi: Ungayisebenzisa kude kangakanani intambo ye-Ethernet? Impendulo incike ohlotsheni lwekhebula kanye nesivinini senethiwekhi esihlosiwe. Izintambo ze-Ethernet ibe nemikhawulo ethile yebanga eqinisekisa ukudluliswa kwedatha okuzinzile ngaphandle kokulahlekelwa kwesignali. Ukweqa leyo mikhawulo kungabangela amaphutha enethiwekhi, isivinini esihamba kancane, noma ngisho nokwehluleka kwesignali okuphelele. Ukuqonda le mikhawulo kukusiza ukuthi udizayine inethiwekhi esebenza kahle futhi enokwethenjelwa.

2. Iyini I-Ethernet nokuthi Isebenza Kanjani

Ngaphambi kokuhlola ubude bekhebula, kubalulekile ukuqonda ukuthi iyini ngempela i-Ethernet. I-Ethernet iphrothokholi yokuxhumana esetshenziselwa ukuthumela nokwamukela idatha phakathi kwamadivayisi kunethiwekhi enezintambo. Ichaza ukuthi amaphakethe edatha adluliswa kanjani, atholwa, futhi alungiselwe kanjani amaphutha.

Nakuba i-Ethernet ingasebenza emithonjeni ehlukene efana ne-fiber optics noma intambo ye-coaxial, amanethiwekhi amaningi esimanje asebenzisa izintambo zesigaba esisontekile sethusi, esivame ukubizwa ngokuthi yi-Cat5e, Cat6, Cat6a, Cat7, ne-Cat8. Lezi zintambo ziklanyelwe ngokukhethekile ukuthwala amasignali e-Ethernet ngesivinini namabanga ahlukahlukene, yingakho ukuqonda umehluko wokusebenza kwazo kubalulekile.

3. Ubude obukhulu bekhebula le-Ethernet ngokwesigaba

Ezimweni eziningi, ibanga eliphezulu lekhebula le-Ethernet lingamamitha ayi-100 (328 amafidi). Lokhu kuhlanganisa amamitha angu-90 ekhebula eliqinile elisetshenziselwa ukufakwa unomphela kanye namamitha angu-10 ezintambo ezicishiwe. Izigaba ezihlukene zezintambo ze-Ethernet zinikeza amazinga ahlukahlukene esivinini kanye nomkhawulokudonsa:

• I-Cat5e (Isigaba 5 Esithuthukisiwe): Isekela isivinini esifika ku-1 Gbps ngomkhawulokudonsa ongu-100 MHz. Isebenza kahle kuze kufike kumamitha ayi-100, okwenza ifanelekele ukusetshenziswa kwezindawo zokuhlala nezamabhizinisi amancane.

• I-Cat6 (Isigaba 6): Inikeza kufika ku-10 Gbps ngokugijima okungafika kumamitha angu-55 kanye no-1 Gbps kufika kumamitha angu-100. Inikeza ukumelana okungcono komsindo kanye nomkhawulokudonsa ophezulu (250 MHz).

• I-Cat6a (Isigaba sesi-6 Esingeziwe): Iletha isivinini esingu-10 Gbps esingafika kumamitha angu-100 ngomkhawulokudonsa ongu-500 MHz. Ukuvikela kwayo okuthuthukisiwe kunciphisa i-crosstalk nokuphazamiseka, ilungele izindawo ezidinga idatha.

• I-Cat7: Idizayinelwe amanethiwekhi asebenza kahle kakhulu, i-Cat7 isekela i-40 Gbps kufika kumamitha angu-55 noma i-10 Gbps kufika kumamitha angu-100 ngomkhawulokudonsa ongu-600 MHz. Ivamise ukusetshenziswa ezikhungweni zedatha nezinhlelo zezimboni.

• I-Cat8: Izinga lakamuva, i-Cat8, lisekela kufika ku-25 noma 40 Gbps ngebanga eliphakeme lamamitha angu-30. Ngomkhawulokudonsa ongu-2000 MHz, yakhelwe ukuxhumana okufushane, okushesha kakhulu emakamelweni amaseva nasezikhungweni zedatha. 

Lokhu kuhluka kubonisa ukuthi isivinini se-Ethernet nebanga kuxhunywe ngokuqondile esigabeni sekhebula kanye nekhwalithi yayo yokwakha.

4. Ukuthi Ubude Bekhebula Buthinta Kanjani Ukusebenza Kwe-Ethernet

Uma ikhebula le-Ethernet lihamba isikhathi eside, kulapho amasignali kagesi eba buthakathaka kakhulu — inqubo eyaziwa ngokuthi i-signal attenuation. Uma amandla esignali ehla, ukudluliswa kwedatha kuba nokwethembeka kancane futhi kungaholela ekulahlekeni kwamaphakethe noma isivinini esinensayo.

Enye inselele i-crosstalk, lapho izimpawu ezivela ezintambo eziseduze ziphazamisana. Ukwengeza, i-EMI (i-electromagnetic interference) evela emithonjeni kagesi eseduze ingahlanekezela amasiginali. Amakhebuli esigaba esiphakeme njenge-Cat6a, i-Cat7, ne-Cat8 adizayinelwe ngesivikelo esinamandla ukuze kuncishiswe lezi zinkinga, kuqinisekiswe ukusebenza kwe-Ethernet okuzinzile ngisho nasezindaweni ezinokuphazamiseka okuphezulu.

Izintambo ezinde zingaphinda zethule ukubambezeleka, noma ukubambezeleka okuncane ekudlulisweni kwedatha. Yize lokhu kuvame ukungabi nandaba ngamafuphi, kungaba nomthelela ezinhlelweni zesikhathi sangempela ezifana nokudlala ku-inthanethi, amakholi wevidiyo, nezinhlelo ze-VoIP. Kungakho ukuhlala ngaphakathi kobude bekhebula le-Ethernet elinconyiwe kubalulekile ekugcineni isivinini nokuthembeka.

5. Izinto Ezithonya Ibanga Le-Ethernet Elikhulu

Nakuba amamitha angu-100 kuwumkhawulo ojwayelekile, izici ezimbalwa ezisebenzayo zingathinta ukuthi i-Ethernet ingasebenza kude kangakanani. Lokhu kubandakanya:

•  Isakhiwo sekhebula: Izintambo zethusi eziqinile zisebenza kangcono emabangeni amade kunama-stranded, avumelana nezimo kodwa anokumelana okuphezulu.

• I-Wire gauge (AWG): Ama-conductor ashubile anciphisa ukulahleka kwesignali futhi asekele ukugijima okude.

• Izinga lokushisa le-ambient: Amazinga okushisa aphezulu angakhuphula ukumelana, anciphise ubude obuningi, ikakhulukazi kuzilungiselelo zangaphandle noma zezimboni.

• Ikhwalithi yokufaka: Ukugoba okubukhali, ukunganqamuki kahle, noma izinhlobo zekhebula ezixubile kunganciphisa ukusebenza.

• Izindinganiso zekhebula: Ukulandela izindinganiso ze-TIA-568 noma ze-ISO/IEC 11801 kuqinisekisa ukuthi inethiwekhi yakho ihlala ingaguquki futhi ithembekile.

Ukucabangela lezi zici phakathi nokufakwa kuqinisekisa ukudluliswa kwesignali okuphelele futhi kunciphisa ithuba lokuphelelwa yisikhathi kwenethiwekhi.

6. Ukunweba i-Ethernet Ngangaphezu Kwamamitha ayi-100

Kwezinye izimo, izakhiwo zenethiwekhi zidinga ukuthi ikhebula ligijime ngaphezu kwamamitha angu-100. Nakuba lokhu kweqa umkhawulo ojwayelekile, kunezixazululo ezimbalwa ezinokwethenjelwa.

Ungasebenzisa amaswishi e-Ethernet, iziphindaphinda, noma izandisi ze-PoE ukuze ukhiqize kabusha amasiginali futhi wandise ubude obuphelele ngaphandle kokulahlekelwa ukusebenza. Kumabanga amade kakhulu, izintambo ze-fiber optic ziyindlela enhle kakhulu, njengoba zidlulisela idatha kumakhulu amamitha noma ngisho namakhilomitha ngaphandle kokulahlekelwa kwesignali. Ngokusebenzisa amadivayisi enethiwekhi alungile nemidiya, kuyenzeka ugcine uxhumo lwe-Ethernet olunesivinini esikhulu kuzo zonke izikhala ezinkulu.

7. Amathiphu Asebenzayo Okufakwa Kwe-Ethernet

Ukuze uthole ukusebenza okuhle kakhulu kunethiwekhi yakho ye-Ethernet, ukufaka kahle kubalulekile. Nawa amathiphu alula kodwa asebenzayo:

•  Khetha isigaba sekhebula esifanele ngokusekelwe kusivinini sakho esidingekayo nebanga.

• Gwema ukusebenzisa izintambo ezihambisana nezintambo zikagesi ukuze unciphise i-EMI.

• Sebenzisa izintambo ze-Ethernet ezivikelekile ezindaweni ezinomsindo zezimboni noma zasembonini.

• Gcina izindlela zamakhebula zihlanzekile futhi zingenamagobe angadingekile noma ama-kink.

• Sebenzisa njalo izixhumi zezinga lezimboni futhi ulandele izindinganiso zokufaka izintambo eziqinisekisiwe.

Isistimu yekhebula ehlelwe kahle iqinisekisa ukuzinza kwesikhathi eside, ukunakekelwa okulula, nokusebenza okungaguquki kwe-Ethernet.

8. Isiphetho: Inethiwekhi Ethembekile Nge-Smart Design

Sengiphetha, umbuzo othi "Ungayisebenzisa kude kangakanani ikhebula le-Ethernet?" kuza phansi ekuqondeni isigaba sakho sekhebula, isivinini senethiwekhi, nezimo zemvelo. Nakuba amamitha angu-100 kuyibanga elijwayelekile lekhebula le-Ethernet eliphezulu, ukuhlela ngokucophelela, izinto zekhwalithi, nokufakwa ngendlela efanele kungenza umehluko ekugcineni ukuxhumana okuzinzile, okunesivinini esikhulu.

Ezindaweni zobungcweti nezimboni, kuhlala kungcono kakhulu ukusebenzisa amakhebuli nezixhumi zekhwalithi ephezulu ezidizayinelwe ukusebenza nokuqina.

I-AMISSIONTECH  igxile kakhulu ezixazululweni zokuxhuma ezimbonini, okuhlanganisa izixhumi ze-Ethernet, amamojula we-IO-Link, kanye nemihlangano yekhebula eyenziwe ngokwezifiso. Uma udinga izixazululo ze-Ethernet ezithembekile nezisebenza kakhulu zezinhlelo zakho zokusebenza, xhumana ne-AMISSIONTECH — uzakwenu omethembayo ekuxhumekeni okuhlakaniphile.