Hauv cov ntawv thov ceev ceev, kev xaiv cov xov hlau thiab cov ntaub ntawv cable ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj kev ua tau zoo tshaj plaws thiab kev ntseeg siab. Qhov kev thov rau cov ntaub ntawv xa mus sai dua thiab kev nce bandwidth yuav tsum tau xav txog ntau yam thaum xaiv cov ntaub ntawv tsim nyog. Tsab xov xwm no qhia txog cov ntsiab lus tseem ceeb uas yuav tsum xav txog thaum xaiv cov ntaub ntawv xov hlau thiab cable ceev ceev, muab kev nkag siab txog yuav ua li cas cov ntaub ntawv zoo tuaj yeem txhim kho kev ncaj ncees ntawm cov teeb liab, txo cov teeb liab poob, thiab xyuas kom meej tias kev xa cov ntaub ntawv zoo.
Kev Ncaj Ncees ntawm Lub Teeb Liab thiab Kev Txo Qhov Mob
Kev tswj kom lub teeb liab zoo yog qhov tseem ceeb heev rau kev siv ceev ceev. Cov xov hlau thiab cov ntaub ntawv cable xaiv yuav tsum muaj qhov tsis zoo ntawm lub teeb liab, txo qhov poob ntawm lub zog teeb liab thaum lub sijhawm xa xov. Cov ntaub ntawv uas muaj dielectric tas mus li thiab qhov poob tangent qis, xws li polyethylene siab (HDPE) lossis polytetrafluoroethylene (PTFE), pab khaws cov teeb liab zoo, txo qhov distortion, thiab xyuas kom meej tias cov ntaub ntawv xa mus deb dua.
Kev Tswj Xyuas Impedance
Kev tswj hwm impedance kom raug yog qhov tseem ceeb hauv cov kab ke sib txuas lus ceev ceev. Cov khoom siv hlau thiab cable yuav tsum muaj cov khoom siv hluav taws xob sib xws kom tswj tau qhov impedance sib xws. Qhov no ua kom muaj kev sib kis ntawm cov teeb liab kom zoo, txo qhov kev cuam tshuam ntawm cov teeb liab, thiab txo qhov kev pheej hmoo ntawm cov ntaub ntawv yuam kev lossis kev puas tsuaj ntawm cov teeb liab. Kev xaiv cov ntaub ntawv uas muaj kev kam rau siab thiab cov yam ntxwv hluav taws xob ruaj khov, xws li polyolefin ua npuas ncauj lossis fluorinated ethylene propylene (FEP), pab ua tiav kev tswj hwm impedance kom raug.
Kev Tiv Thaiv Crosstalk thiab EMI Mitigation
Cov xov hlau thiab cov xov hlau ceev ceev muaj feem cuam tshuam rau kev cuam tshuam hluav taws xob (EMI). Kev xaiv cov khoom siv kom raug yuav pab txo cov teeb meem no. Cov ntaub thaiv, xws li ntawv ci txhuas lossis cov ntaub thaiv tooj liab braided, muab kev tiv thaiv zoo tiv thaiv EMI sab nraud. Tsis tas li ntawd, cov ntaub ntawv uas muaj kev cuam tshuam tsawg, xws li cov qauv sib txuas lossis cov ntaub ntawv uas muaj cov qauv rwb thaiv tsev zoo tshaj plaws, pab txo qhov kev sib txuas ntawm cov teeb liab tsis xav tau thiab txhim kho kev ncaj ncees ntawm cov teeb liab.
Kev Xav Txog Ib puag ncig
Thaum xaiv cov xov hlau thiab cov cable ceev ceev, yuav tsum xav txog tej yam xws li kev ua haujlwm thiab tej yam ib puag ncig. Qhov kub thiab txias hloov pauv, dej noo, tshuaj lom neeg, thiab kev raug UV tuaj yeem cuam tshuam rau kev ua haujlwm ntawm cov khoom thiab lub neej ntev. Cov ntaub ntawv uas muaj kev ruaj khov zoo heev, tiv taus dej noo, tiv taus tshuaj lom neeg, thiab tiv taus UV, xws li polyethylene cross-linked (XLPE) lossis polyvinyl chloride (PVC), feem ntau yog cov khoom siv uas nyiam siv los xyuas kom muaj kev ua haujlwm zoo nyob rau hauv ntau yam ib puag ncig.
Kev xaiv cov xov hlau thiab cov ntaub ntawv cable ceev ceev yog qhov tseem ceeb rau kev ua tiav qhov kev ua tau zoo tshaj plaws, kev ruaj khov ntawm lub teeb liab, thiab kev ntseeg tau. Kev xav txog xws li kev txo qis ntawm lub teeb liab, kev tswj hwm impedance, kev txo qis crosstalk thiab EMI, thiab cov yam ntxwv ib puag ncig yog qhov tseem ceeb thaum xaiv cov khoom siv. Los ntawm kev soj ntsuam cov yam ntxwv no thiab xaiv cov ntaub ntawv nrog cov khoom siv hluav taws xob, tshuab, thiab ib puag ncig tsim nyog, cov chaw tsim khoom tuaj yeem ua tau raws li qhov xav tau ntawm cov ntawv thov ceev ceev thiab xyuas kom meej tias kev xa cov ntaub ntawv zoo thiab ntseeg tau.
Lub sijhawm tshaj tawm: Tsib Hlis-25-2023