Amaphutha ayisithupha ajwayelekile ama-fiber optic transceivers

I-Fiber optic transceiver iyiyunithi yokuguqula imidiya ye-Ethernet eshintshanisa amasignali kagesi asontekile amabanga amafushane kanye namasignali okubona amabanga amade.Ibizwa nangokuthi i-photoelectric converter (I-Fiber Converter) ezindaweni eziningi.

1. Isibani sesixhumanisi asikhanyi

(1) Hlola ukuthi umugqa we-fiber optical uvuliwe yini;

(2) Hlola ukuthi ukulahleka komugqa we-fiber optical kukhulu kakhulu yini, okudlula uhla lokuthola okokusebenza;

(3) Hlola ukuthi isixhumi esibonakalayo sefiber optical sixhunywe ngendlela efanele, i-TX yendawo ixhumeke ku-RX ekude, futhi i-TX ekude ixhumeke ku-RX yendawo.(d) Hlola ukuthi isixhumi se-fiber optical sifakwe kahle yini kusixhumi esibonakalayo sedivayisi, noma uhlobo lwe-jumper lufana nesixhumi esibonakalayo sedivayisi, noma uhlobo lwedivayisi lufana ne-optical fibre, nokuthi ubude bokudlulisela bocingo bufana nebanga.

2. Isibani seLinki yesifunda asikhanyi

(1) Hlola ukuthi ikhebula lenethiwekhi livuliwe yini;

(2) Hlola ukuthi uhlobo lokuxhuma luyahambisana yini: amakhadi enethiwekhi namarutha nezinye izinto zokusebenza zisebenzisa izintambo ezinqamulayo, futhi amaswishi, amahabhu nezinye izinto zokusebenza zisebenzisa izintambo eziqondile;

(3) Hlola ukuthi izinga lokudlulisela ledivayisi liyahambisana yini.

3. Ukulahlekelwa kwephakethe lenethiwekhi okukhulu

(1) Imbobo kagesi ye-transceiver kanye nesixhumi esibonakalayo sedivayisi yenethiwekhi, noma imodi eyi-duplex yesixhumi esibonakalayo sedivayisi kuzo zombili iziphetho azifani;

(2) Kunenkinga ngekhebula elisontekile kanye nekhanda le-RJ-45, ngakho hlola;

(3) Inkinga yokuxhuma i-fiber, noma ngabe i-jumper ihambisana nesixhumi esibonakalayo sedivayisi, noma ngabe i-pigtail ifana ne-jumper kanye nohlobo lwe-coupler, njll.;

(4) Ukuthi ukulahlekelwa komugqa we-fiber optical kudlula ukuzwela kokwamukela kwempahla.

4. Ngemuva kokuthi i-fiber optic transceiver ixhunyiwe, iziphetho ezimbili azikwazi ukuxhumana

(1) Uxhumo lwefayibha luhlehlisiwe, futhi ifayibha exhunywe ku-TX ne-RX iyashintshwa;

(2) I-interface ye-RJ45 kanye nedivayisi yangaphandle ayixhunyiwe ngendlela efanele (nake ukuqondisa okuqondile nokuhlanganisa).I-optical fiber interface (i-ceramic ferrule) ayifani.Leli phutha libonakala kakhulu ku-transceiver engu-100M enomsebenzi wokulawula okuhlangene kwezithombe zikagesi, njenge-APC ferrule.I-pigtail exhunywe ku-transceiver ye-PC ferrule ngeke ixhumane ngokujwayelekile, kodwa ngeke ithinte i-transceiver yokulawula mutual engeyona ye-optical.

5. Vula futhi uvale isenzeko

(1).Kungenzeka ukuthi ukuncishiswa kwendlela yokubona kukhulu kakhulu.Ngalesi sikhathi, imitha yamandla e-optical ingasetshenziswa ukukala amandla okubona kwesiphetho sokwamukela.Uma iseduze nebanga elitholayo lokuzwela, lingahlulelwa ngokuyisisekelo njengokuhluleka kwendlela yokubona phakathi kwebanga elingu-1-2dB;

(2).Kungenzeka ukuthi inkinobho exhunywe ku-transceiver inephutha.Ngalesi sikhathi, shintsha inkinobho nge-PC, okungukuthi, ama-transceiver amabili axhumeke ngqo ku-PC, futhi zombili iziphetho ziyi-PING.Uma ingaveli, ingahlulelwa ngokuyisisekelo njengokushintshwa.Iphutha;

(3).I-transceiver ingase ibe nephutha.Ngalesi sikhathi, ungakwazi ukuxhuma zombili iziphetho ze-transceiver ku-PC (ungadluli emshinini).Ngemuva kokuthi zombili iziphetho zingenayo inkinga nge-PING, dlulisa ifayela elikhudlwana (100M) noma ngaphezulu ukusuka komunye umkhawulo uye komunye, futhi ugcine isivinini salo, uma isivinini sihamba kancane (amafayela angaphansi kuka-200M angadluliselwa ngaphezu kwemizuzu engu-15), kungase kuhlulelwe ngokuyisisekelo njengokuhluleka kwe-transceiver

6. Ngemuva kokuthi umshini uphahlazekile futhi uqale kabusha, ubuyela kokujwayelekile

Lesi simo ngokuvamile sibangelwa ukushintsha.Iswishi izokwenza ukutholwa kwephutha le-CRC futhi iqinisekise ubude kuyo yonke idatha etholiwe.Uma iphutha litholwa, iphakethe lizolahlwa, futhi iphakethe elilungile lizodluliselwa phambili.

Nokho, amanye amaphakethe anamaphutha kule nqubo awakwazi ukutholwa ekutholeni iphutha le-CRC nokuhlola ubude.Amaphakethe anjalo ngeke athunyelwe noma alahlwe phakathi nenqubo yokudlulisela phambili.Zizonqwabelana kubhafa eguqukayo.(I-Buffer), ayisoze yathunyelwa.Uma isilondolozi sesigcwele, sizobangela ukuthi iswishi iphahlazeke.Ngoba ngalesi sikhathi ukuqalisa kabusha i-transceiver noma ukuqala kabusha iswishi kungabuyisela ukuxhumana kokujwayelekile.