I-SFP transceiver: injongo, izinhlobo, izici

Ukuthuthukiswa kobuchwepheshe bokudlulisa idatha kuye kwabangela ukubonakala kwenethiwekhi ye-fiber, lapho kudingwa imishini ekhethekile ukuxhuma amadivaysi - i-transceiver ye-SFP. Amamojula we-SFP ashintshile imishini ye-GBIC eyinkimbinkimbi futhi asetshenziselwa imigqa yezokuxhumana ngezinga lokusakaza kwedatha engaphezu kwe-100 Mbps.

Injongo

Ama-transceivers we-SFP asetshenziswa njengemishini ye-transceiver. Ngamanye amazwi, basebenza njengabaxhumanisi phakathi kwekhebula le-fiber optical noma i pair pair engaphenduliwe kanye ne-network switch-switch, modem noma router. Inzuzo enkulu ye-module iyisixhumi esincane kakhulu. Ngenxa yalokhu, i-transceiver ye-SFP enobubanzi bamamentimitha angama-20 kuphela angahlala kuze kube ngu-20.

Imishini isetshenziselwa ukuhanjiswa kwedatha eliphezulu (ngaphezu kuka 10 Mbps) usebenzisa ubuchwepheshe obulandelayo: SDH neFiber Channel. Ngaphezu kwalokho, kukhona imishini engasebenza ngezinhlobo ezintathu zokudluliselwa kwesignali.

Izinhlobo ze-SFP transceivers

Kuye ngemisebenzi eyabelwe, njengekhebula le-fiber-optic, kanye nemishini esetshenzisiwe, wonke amamojula we-SFP ahlukaniswe ngokwezinqubo eziningana:

1. Isivinini sokudlulisa idatha. I-transceiver evamile ye-SFP iphinda ithumele isignali ngesilinganiso esingu-100 Mb / s no-1 Gb / s, amazinga we-SFP + ne-XFP afinyelela ku-10 Gb / s.
2. Uhlobo lwenethiwekhi olusetshenziswa. I-SC-slot isetshenziselwa ukuxhuma ikhebula elilodwa-i-fibre, lapho ukwemukela nokudluliselwa kolwazi kwenzeka khona ngaphezu kweyodwa fiber, kanye ne-LC-connector yamathebhu amabili, lapho ukwemukelwa nokudluliselwa kwamaseli kwenziwa ngeziteshi zalo.
3. Uhlobo lwe-fiber. Ukuxhuma kwikhodi eyodwa-imodi, i-SM-transceiver isetshenzisiwe, futhi ye-multimode, amamojula we-MM asetshenzisiwe.
4. Amandla aphezulu kakhulu isignali esithunyelwe. Lesi sici sihlukahluka ku-1310 nm no-1550 nm we-singlemode uxhumano, nangaphakathi kuka-850 nm no-1310 nm yamakhodi multimode.

Isithinteli ngasinye se-SFP sinabhajethi ethile ye-optical, noma ububanzi bokuthola isignali nokudluliselwa. Njengoba ukukhanya kuhamba phakathi kwekhebula, isignali idonswa. Umehluko phakathi kwebanga elide ukuthi imodemu yesignali ingathumela futhi amandla we-flux light etholakalayo abizwa ngokuthi isabelomali sokuvula. Le datha iboniswa kushidi lwedatha le-transceiver ku-dB.

Izici zokusebenza ngamamojula

Ngesikhathi ukudluliswa kwedatha ye-SFP, i-module iveza isignali ekhanyayo embukisweni ongabonakali (kunelaseli ekhethekile ngaphakathi kwemishini). Ngakho-ke, kunqatshelwe ukubuka "iso" lwedivayisi ukugwema umonakalo ku-retina.

Uma uxhuma umthumeli we-SFP, kuyadingeka ukuthi ugqoke isibopho se- antistatic, ngemva kokuxhuma kulesi simo. Uma kungenjalo, ukukhishwa kwamanje kagesi kungakhubaza idivayisi.

Ngaphezu kwalokho, "iso" le-laser lizwela othulini, ngakho ungasusi ama-plugs wokuvikela ngaphambi kokuvula idivayisi. Ukwandisa impilo ye-module, zama ukukhipha ikhebula kusuka kusixhumi ngaphandle kokuyidinga.

Imithetho yokukhetha amamojula we-SFP

Khetha i-transceiver ye-SFP ngokuvumelana nezici zekhebula lakho le-fiber optic. Ngesikhathi esifanayo, kubalulekile ukugxila ezindabeni eziningana. Okokuqala, kudingeka sithole isabelomali sokuvula ngokunembile. Ngalesi sizathu, kunconywa amadivaysi akhethekile. Uma engekho, ungathola le nzuzo "ngeso", kwanele ukwazi ibanga phakathi kwephuzu lokumukelwa nokudlulisela ngaphakathi kwekhilomitha.

Okwesibili, thola uhlobo lwe-latch ebhodini ledivayisi yakho yenethiwekhi. I-transceiver ebonakalayo ye-SFP kufanele ikhethwe ngokukhiya okufanayo. Uma kungenjalo, awukwazi nje ukusebenzisa i-module. Njengamanje, kunezinhlobo ezintathu zezitshalo emakethe: Inkinobho, I-Mylar Tab, i-Bale-Clasp. Unganquma uhlobo olubonakalayo.