1. Feem ntau, qhov kev xeem poob feem ntau yog raws li tus nqi poob. Thaum kuaj, teeb tsa qhov fusion poob hauv qhov kev txheeb xyuas qhov tsawg kawg nkaus tuaj yeem ua rau pom qhov poob ntawm cov fiber ntau kuaj. Thaum ntsuas, lub wavelength feem ntau yog teem rau ntawm 1550 qhov rais thaum qhov ntev ntawm cov fiber ntau kuaj tau tshaj 20 kilometers, thiab ntawm 1310 lub qhov rais thaum nws tsawg tshaj li 20 kilometers.
2. Kev siv OTDR rau kev ntsuas fiber ntau tuaj yeem muab faib ua peb kauj ruam: kev teeb tsa kev ntsuas, cov ntaub ntawv tau txais, thiab kev ntsuas nkhaus.
3. Ua ntej txuas cov fiber ntau optic active sib koom ua ke rau OTDR, nws yuav tsum tau ua tib zoo ntxuav, nrog rau cov khoom sib koom ua ke thiab cov kev sib tw ua haujlwm ntawm OTDR. Txwv tsis pub, qhov kev poob qis yog qhov loj heev, qhov ntsuas tsis tuaj yeem ntseeg tau, cov nkhaus yog nrov dhau, thiab txawm tias qhov ntsuas tsis tuaj yeem ua tiav. Nws kuj tseem tuaj yeem ua rau OTDR puas. Tsis txhob siv cov tshuaj ntxuav lossis cov khoom siv refractive piv cov kua uas tsis yog cawv, vim tias lawv tuaj yeem yaj cov nplaum rau hauv lub fiber ntau optic connector.
4. Yog tias koj xav siv OTDR los kuaj qhov chaw tawg thiab poob ntawm cov fibers optical, nws yooj yim heev. Txuas cov fiber ntau kho qhov muag rau OTDR thiab xyuas kom meej tias cov khoom txuas txuas tau zoo. Nws yog qhov zoo tshaj plaws los so lub fiber optic connector nrog cawv ua ntej txuas.
5. Teem lub ntsuas wavelength rau lub qhov rais 850 (muab tias koj muaj qhov ua haujlwm wavelength). 2. Kev ntsuas ntau: teem rau 0-10km, ntsuas ntau yam= qhov ntsuas qhov deb * 53 pulse dav: qhov loj dua tus nqi teev raws li qhov ntsuas qhov deb, lub hauv paus ntsiab lus no.