POE fais fab mov yog tiav los ntawm lub network cable, thiab lub network cable yog tsim los ntawm plaub khub ntawm twisted khub (8 cores nyob ntawm tej), yog li yim cores nyob rau hauv lub network cable yog PoE.hloovmuab cov ntaub ntawv thiab hluav taws xob xa xov xwm rau cov khoom siv tau txais. Tam sim no, PoE keyboards muab kev sib kis tau tshaj DC fais fab rau qhov tau txais End devices los ntawm peb hom PoE fais fab mov: hom A (kawg-SPAN kawg crossover), hom B (Mid-Span nruab nrab crossover) thiab 4-pair.
• Hom A PoE fais fab mov hom
Hom A yog qhov kawg. Hauv hom no, PoE hloov khoom siv hluav taws xob rau qhov khoom kawg tau txais los ntawm 1, 2, 3, thiab 6 xov hlau, thiab tseem xa cov ntaub ntawv. 1 thiab 2 yog qhov zoo terminals, thiab 3 thiab 6 yog qhov tsis zoo.
• Hom B PoE fais fab mov hom
Hom B yog hom Mid-Span. Hauv hom no, PoEhloovmuab lub zog rau lub tshuab txais los ntawm 4, 5, 7, thiab 8 xov hlau. Thaum ua ntawv thov rau 10BASE-T thiab 100BASE-T Ethernet, 4, 5, 7, 8 kab yuav tsuas nqa lub zog xa mus, yuav tsis nqa cov ntaub ntawv xa mus, yog li plaub taw tseem hu ua idle feet. Qhov twg 4, 5 raws li qhov zoo electrode, 7, 8 raws li qhov tsis zoo electrode.
• 4-pair PoE fais fab mov hom
Hauv hom no, PoEhloovyuav muab lub zog rau cov khoom txais los ntawm tag nrho cov kab, qhov twg 1, 2, 4, thiab 5 yog qhov zoo terminals, thiab 3, 6, 7, thiab 8 yog qhov tsis zoo.
Nws yuav tsum raug sau tseg tias PoE fais fab mov hom yog txiav txim siab los ntawm cov khoom siv hluav taws xob, thiab PoEhloovthiab PoE fais fab mov (lub hwj chim injector) tuaj yeem siv los ua cov khoom siv hluav taws xob los nqa lub zog thiab cov ntaub ntawv xa mus rau cov khoom tau txais. Raws li cov khoom siv hluav taws xob, PoEhloovfeem ntau siv hom A rau kev siv fais fab. Feem ntau, PoE injector yog siv los ua ib qho khoom nruab nrab los txuas cov PoE tsis yog tus qauvhloovthiab cov khoom txais. Nws tsuas tuaj yeem txhawb nqa PoE fais fab mov hom hauv hom B..
PoE fais fab mov nrug: Vim hais tias lub zog thiab cov teeb liab network tau yooj yim cuam tshuam los ntawm kev tiv thaiv thiab kev muaj peev xwm thaum xa tawm ntawm lub network cable, ua rau lub teeb liab attenuation lossis tsis ruaj khov, qhov kev sib kis ntawm lub network cable yog txwv, thiab qhov siab tshaj plaws kis tau tus mob tsuas yog ncav cuag 100 meters. PoE fais fab mov yog pom tau los ntawm lub network cable, yog li nws qhov kev sib kis deb yog cuam tshuam los ntawm lub network cable, thiab qhov siab tshaj plaws kis tau tus mob yog 100 meters. Txawm li cas los xij, yog tias siv PoE txuas ntxiv, PoE fais fab mov tuaj yeem txuas mus rau qhov siab tshaj plaws ntawm 1219 meters.
PoE fais fab mov hom yog kwv yees qhia nyob rau hauv cov ntsiab lus saum toj no, xws li rauhloovCov khoom lag luam tau hais los saum toj no, lawv yog cov khoom siv sib txuas lus nrov hauv Shenzhen HDV Phoelectron Technology LTD., xws li: Ethernethloov, Fiber Channelhloov, Ethernet Fiber Channelhloov, thiab lwm yam, cov keyboards saum toj no tuaj yeem siv rau ntau qhov xwm txheej, muab kev xaiv ntau dua rau cov neeg siv khoom sib txawv, txais tos kom nkag siab, peb yuav muab cov kev pabcuam zoo tshaj plaws.
