Multimeter daim ntawv thov: fiber optic xeem tsis thiab xeem txoj kev
Tom qab kev teeb tsa ntawm fiber ntau optic cabling system tiav lawm, nws yog ib qho tsim nyog yuav tsum tau sim cov yam ntxwv ntawm kev sib kis ntawm qhov txuas, ntawm cov khoom uas tseem ceeb tshaj plaws yog cov yam ntxwv ntawm qhov sib txuas, qhov poob ntawm qhov txuas, rov qab poob, thiab lwm yam. Hauv qab no, peb yuav muab cov lus qhia luv luv rau kev ntsuas qhov tseem ceeb ntawm lub cev tsis zoo hauv fiber ntau optic cabling, nrog rau kev daws teeb meem thiab kev saib xyuas hauv lub network.
Lub cev tseem ceeb ntawm kev sib txuas ntawm fiber ntau optic
1. Attenuation yog qhov txo qis ntawm lub zog kho qhov muag thaum lub sijhawm sib kis ntawm lub teeb raws li cov khoom siv kho qhov muag.
2. Kev suav ntawm tag nrho cov attenuation nyob rau hauv fiber optic tes hauj lwm: Fiber ntau poob (LOS) hais txog qhov piv ntawm lub hwj chim tso zis ntawm lub fiber optic kawg, Powerout, mus rau lub hwj chim kis mus rau lub fiber optic.
3. Qhov poob yog ncaj qha proportional rau qhov ntev ntawm fiber ntau, yog li tag nrho cov attenuation tsis tsuas yog qhia tias fiber ntau poob nws tus kheej, tab sis kuj qhia txog qhov ntev ntawm fiber ntau.
4. Fiber poob qhov tseem ceeb ( ): Kom muaj kev cuam tshuam cov yam ntxwv ntawm fiber ntau attenuation, peb qhia lub tswv yim ntawm fiber ntau poob.
5. Kev ntsuas ntawm attenuation: Vim tias kev sib txuas ntawm fiber ntau optic rau lub teeb pom kev zoo thiab ntsuas lub zog kho qhov muag inevitably qhia txog kev poob ntxiv. Yog li ntawd, thaum lub sij hawm sim ntawm qhov chaw, nws yog ib qho tsim nyog yuav tsum xub teeb tsa qhov ntsuas qhov ntsuas ntawm qhov ntsuas (piv txwv li rov pib dua rau xoom). Muaj ntau ntau txoj hauv kev rau kev sim cov ntsiab lus siv, feem ntau yog xaiv raws li cov khoom sib txuas. Nyob rau hauv fiber optic cabling systems, vim lub luv luv ntawm lub fiber nws tus kheej, qhov tseem ceeb tshaj yog muab tso rau connectors thiab sim jumpers nyob rau hauv lub xeem txoj kev, ua rau txoj kev tseem ceeb.
Rov qab poob: Reflection poob, tseem hu ua rov qab poob, hais txog qhov sib piv decibel ntawm lub teeb rov qab los rau lub teeb pom kev ntawm fiber ntau optic kev twb kev txuas. Qhov ntau dua qhov rov qab poob, qhov zoo dua, txhawm rau txo qhov cuam tshuam ntawm kev cuam tshuam ntawm lub teeb ci ntawm lub teeb ci thiab qhov system. Txoj kev los txhim kho kev poob rov qab yog xaiv los ua cov txheej txheem fiber ntau lub ntsej muag mus rau hauv ib lub voj voog lossis oblique spherical nto kom ntau li ntau tau, uas yog ib txoj hauv kev zoo los txhim kho rov qab poob.
