4 Kauj Ruam Ua Kom Pom Qhov Txhaum Hauv Fiber Optical Network
1.Yog hais tias lub teeb taw qhia ntawm cov teeb tsa fiber ntau optical transceiver lossis optical module thiab twisted khub cable chaw nres nkoj yog lub teeb?
a. Yog tias qhov ntsuas xa hluav taws xob qhov chaw nres nkoj (FX) tsis muaj teeb pom kev zoo, kom paub tseeb tias qhov txuas hluav taws xob yog qhov sib txuas fiber ntau txuas. Ib txoj hlua roj carbon fiber optic txuas rau hauv parallel; lwm qhov kawg txuas nrog tus qauv ntoo khaub lig.
b. Yog tias A transceiver optical port (FX) qhov taw qhia lub teeb tab sis B transceiver optical port (FX) qhov taw qhia tsis yog lub teeb, ces qhov txhaum yog qhov A transceiver sab. Ib txoj kev tuaj yeem yog: Ib qho transceiver (TX) optical transmitter port yog qhov tsis zoo thiab B transceiver optical port (RX) tsis tau txais cov teeb liab kho qhov muag. Lwm qhov ua tau yog: Muaj teeb meem hauv kab hluav taws xob txuas ntawm A transceiver (TX) optical transmitter port. (Cov hlua hluav taws xob cable lossis fiber ntau optic patch txuas yuav tawg.)
c. Twisted khub (TP) thaj cable qhia qhov taw qhia tsis yog lub teeb, nco ntsoov tias txoj kev sib txuas ntawm cov xov hlau sib txuas yog qhov tsis raug lossis cov xov paj sib txuas ntawm tus khub tsis raug? Thov siv cov simter on-off sim. (lub siab twisted khub cable qhia tau ntawm qee qhov transceivers yuav pom kev kom txog rau thaum cov xaim hluav taws xob txuas.)
d. qee qhov transceivers muaj ob qhov RJ45 chaw nres nkoj: (Rau HUB) qhia tau hais tias lub xaim txuas rau hloov pauv yog kab ncaj qha; (Rau Node) qhia lub cable txuas rau hloov yog kab-kab;
e. Ib sab ntawm qee qhov transceivers nrog MPR hloov: Qhia tau tias txoj kab txuas rau hloov mus yog txoj kab ncaj nraim; DTE hloov tau qhia lub cable txuas rau hloov yog kab txuas;
2.Yog muaj cov kab nrib fiber ntau cable, fiber ntau jumper tau tawg?
a. Cable on-off nrhiav: siv laser teeb nyem, lub hnub ci, lub teeb kom tiv thaiv ib sab ntawm cable txuas lossis txuas; saib ntawm lwm qhov kawg yog tias pom kev kaj? Yog tias pom qhov pom kev, nws taw qhia tias cov hlua hluav taws xob cable tsis tawg.
b. Cov kab hluav taws xob fiber ntau txuas rau kev txiav txim siab: siv laser teeb nyem lossis lub hnub ci pem hauv ntej ntawm ib sab ntawm lub ntsej muag fiber ntau, saib ntawm lwm qhov kawg yog tias pom muaj lub teeb pom kev? Yog tias pom kev pom, nws qhia tau tias cov hlua hluav taws xob jumper tsis tawg.
3.Hauv qhov ib nrab / tag nrho cov duplex hom tsis raug?
Ib sab ntawm qee qhov transceivers nrog FDX hloov: qhia meej tag nrho duplex; HDX hloov: txhais tau tias ib nrab-ib nrab.
4.Txoj siv lub ntsuas hluav taws xob tsis zoo los ntsuas
Lub luminous lub zog ntawm optical transceiver lossis optical module nyob rau hauv ib txwm muaj tshwm sim: multimode: -10db-18db; ib hom 20 km: -8db-15db; ib hom 60 km: -5db-12db. Yog tias lub luminous lub zog ntawm fiber optic transceiver yog: -30db-5db, tom qab ntawd koj tuaj yeem txiav txim siab tus transceiver muaj teeb meem.
