Yuav kom paub qhov siab tshaj qhov sib kis ntawm PoE, peb yuav tsum xub xyuas seb yam twg yog qhov tseem ceeb uas txiav txim siab qhov siab tshaj plaws.Qhov tseeb, siv tus qauv Ethernet cables (twisted khub) xa DC lub zog tuaj yeem nqa mus ntev, uas yog ntau dua li qhov sib kis ntawm cov ntaub ntawv qhia.Yog li ntawd, qhov siab tshaj plaws ntawm kev sib kis ntawm cov ntaub ntawv yog qhov tseem ceeb.

1. Qhov siab tshaj plaws ntawm kev sib txuas lus network cable cov ntaub ntawv

Peb paub ntau ntxiv txog lub network paub tias khub twisted muaj qhov "insurmountable" kis tau tus mob ntawm "100 meters".Txawm hais tias nws yog Qeb 3 twisted khub nrog 10M kis tus nqi, Qeb 5 twisted khub nrog 100M kis tus nqi, lossis txawm Qeb 6 twisted khub nrog 1000M kis tus nqi, qhov ntev tshaj qhov sib kis tau zoo yog 100 meters.

Nyob rau hauv kev sib txuas lus specification, nws tseem yuav tsum tau kom meej meej hais tias kab rov tav kab yuav tsum tsis txhob ntau tshaj 90 meters, thiab tag nrho ntev ntawm qhov txuas yuav tsum tsis txhob ntau tshaj 100 meters.Hais tias, 100 meters yog txwv rau wired Ethernet, uas yog qhov ntev ntawm qhov txuas ntawm daim npav network mus rau lub hub ntaus ntawv.

2. Koj tau txais qhov siab tshaj plaws ntawm 100 meters li cas?

Dab tsi ua rau lub siab txwv ntawm 100-meter kis tau tus mob ntawm tus khub twisted?Qhov no yuav tsum muaj kev dhia dej tob rau hauv lub cev sib sib zog nqus ntawm tus khub twisted.Kev sib kis ntawm lub network yog qhov tseeb ntawm kev sib kis ntawm lub network teeb liab ntawm cov kab sib tw twisted.Raws li ib qho hluav taws xob teeb liab, thaum nws kis tau nyob rau hauv lub twisted khub kab, nws yuav tsum tau cuam tshuam los ntawm kev tsis kam thiab capacitance, uas ua rau lub attenuation thiab distortion ntawm lub network teeb liab.Thaum lub attenuation los yog distortion ntawm lub teeb liab mus txog ib theem, qhov zoo thiab ruaj khov kis tau tus mob ntawm lub teeb liab yuav raug cuam tshuam.Yog li ntawd, cov twisted khub muaj ib tug kis tau tus mob nyob deb txwv.

3. Qhov siab tshaj plaws ntawm cable nyob rau lub sijhawm tsim kho

Nws tuaj yeem pom los ntawm cov saum toj no vim li cas qhov ntev tshaj plaws ntawm lub network cable yuav tsum tsis pub tshaj 100 meters thaum siv PoE fais fab mov.Txawm li cas los xij, hauv kev tsim kho tiag tiag, txhawm rau txhawm rau ua kom zoo ntawm qhov project, feem ntau siv 80-90 meters.

Thov nco ntsoov tias qhov kev sib kis deb ntawm no yog hais txog qhov siab tshaj plaws, xws li 100M.Yog tias tus nqi raug txo mus rau 10M, qhov kev sib kis feem ntau tuaj yeem txuas mus rau 150-200 meters (nyob ntawm qhov zoo ntawm lub network cable).Yog li ntawd, qhov kev ncua deb ntawm PoE fais fab mov tsis yog txiav txim los ntawm PoE thev naus laus zis, tab sis los ntawm hom thiab qhov zoo ntawm lub network cable.