Mphamvu ya POE imatheka kudzera pa chingwe cha netiweki, ndipo chingwe cha netiweki chimapangidwa ndi mawiri anayi opotoka (8 mawaya apakatikati), kotero mawaya asanu ndi atatu apakati pa chingwe cha netiweki ndi PoE.kusinthakuti apereke deta ndi mauthenga otumizira mphamvu pa chipangizo cholandira. Pakalipano, ma switch a PoE amapereka mphamvu yoyendera ya DC ku zipangizo zolandirira Mapeto kudzera mumitundu itatu yamagetsi ya PoE: Mode A (end-SPAN end crossover), mode B (Mid-Span middle crossover) ndi 4-pair.
• Mode A PoE mphamvu yamagetsi
Njira A ndi yomaliza. Munjira iyi, chosinthira cha PoE chimapereka mphamvu ku chipangizo cholandirira Mapeto kudzera mawaya 1, 2, 3, ndi 6, komanso kutumiza deta. 1 ndi 2 ndi ma terminals abwino, ndipo 3 ndi 6 ndi ma terminals opanda pake.
• Mode B PoE mphamvu yamagetsi
Mode B ndiye Mid-Span mode. Munjira iyi, PoEkusinthaamapereka mphamvu ku chipangizo cholandirira kudzera mawaya 4, 5, 7, ndi 8. Mukagwiritsidwa ntchito ku 10BASE-T ndi 100BASE-T Efaneti, 4, 5, 7, 8 mizere imangogwira ntchito yotumiza mphamvu, sichitha kufalitsa deta, kotero mapazi anayi amatchedwanso mapazi opanda pake. Kumene 4, 5 monga electrode yabwino, 7, 8 ngati electrode yolakwika.
• Njira yamagetsi ya 4-pair PoE
Munjira iyi, PoEkusinthaidzapereka mphamvu ku chipangizo cholandirira kudzera m'mizere yonse, pomwe 1, 2, 4, ndi 5 ndi ma terminals abwino, ndipo 3, 6, 7, ndi 8 ndi ma terminals opanda pake.
Tiyenera kuzindikira kuti njira yamagetsi ya PoE imatsimikiziridwa ndi chipangizo chamagetsi, ndi PoEkusinthandi PoE power supply (power injector) ingagwiritsidwe ntchito ngati chipangizo chopangira magetsi kuti agwiritse ntchito mphamvu ndi kufalitsa deta pa chipangizo cholandira. Monga chipangizo chopangira magetsi, PoEkusinthanthawi zambiri amagwiritsa ntchito mode A popereka mphamvu. Nthawi zambiri, jekeseni wa PoE amagwiritsidwa ntchito ngati chipangizo chapakatikati kuti alumikizane ndi PoE yosagwirizanakusinthandi chipangizo cholandirira. Itha kungothandizira mawonekedwe amagetsi a PoE mumachitidwe B.
Kutalikirana kwamagetsi a PoE: Chifukwa mphamvu ndi ma netiweki ma siginecha amakhudzidwa mosavuta ndi kukana ndi mphamvu akamatumizidwa pa chingwe cha netiweki, zomwe zimapangitsa kuti ma sign achepetse kapena kusakhazikika kwamagetsi, mtunda wotumizira chingwe cha netiweki ndi wocheperako, ndipo mtunda wautali wotumizira ungathe kokha. kufika mamita 100. Mphamvu ya PoE imazindikiridwa kudzera pa chingwe cha netiweki, kotero kuti mtunda wake wotumizira umakhudzidwa ndi chingwe cha netiweki, ndipo mtunda wotalikirapo ndi 100 metres. Komabe, ngati PoE extender igwiritsidwa ntchito, gawo lamagetsi la PoE litha kupitilira mpaka mamita 1219.
Njira yamagetsi ya PoE imayambitsidwa pang'onopang'ono pazomwe zili pamwambapa, monga zakusinthamndandanda wazinthu zomwe tazitchula pamwambapa, ndizinthu zodziwika bwino zoyankhulirana ku Shenzhen HDV Phoelectron Technology LTD., monga: Efanetikusintha, Fiber Channelkusintha, Ethernet Fiber Channelkusintha, ndi zina zotero, zosinthika pamwambazi zingagwiritsidwe ntchito pazochitika zosiyanasiyana, kupereka zosankha zambiri kwa ogwiritsa ntchito omwe ali ndi zosowa zosiyanasiyana, kulandiridwa kuti amvetse, tidzapereka ntchito yabwino kwambiri.
