Ukwazi umgama omkhulu wothumelo lwe-PoE, kufuneka siqale siqonde ukuba zeziphi izinto eziphambili ezimisela umgama omde.Enyanisweni, ukusebenzisa iintambo ze-Ethernet eziqhelekileyo (isibini esijijekileyo) ukuhambisa amandla e-DC anokuthwalwa kumgama omde, ongaphezulu kakhulu kunomgama wokudluliselwa kweempawu zedatha.Ngoko ke, umgama ophezulu wokuhanjiswa kwedatha ungundoqo.

1. Owona mgama mkhulu wothumelo lwedatha yentambo yenethiwekhi

Siyazi ngakumbi malunga nenethiwekhi siyazi ukuba isibini esijijekileyo sinomgama wothumelo "ongenakugqithiswa" we "100 yeemitha".Nokuba luDidi 3 iperi ejijekileyo enesantya sothumelo lwe-10M, iDidi 5 ejijekileyo iperi enezinga losulelo lwe-100M, okanye iDidi 6 ezijijekileyo iperi enesantya sothumelo lwe-1000M, owona mgama usebenzayo wothumelo li-100 leemitha.

Kwinkcazo ye-wiring edibeneyo, iphinda ifuneke ngokucacileyo ukuba i-wiring e-horizontal akufanele idlule i-90 yeemitha, kwaye ubude obupheleleyo bekhonkco akufanele budlule i-100 yeemitha.Oko kwathiwa, i-100 yeemitha ngumda we-Ethernet enentambo, ubude bekhonkco ukusuka kwikhadi lenethiwekhi ukuya kwisixhobo se-hub.

2. Uwufumene njani owona mgama mkhulu weemitha ezili-100?

Yintoni ebangele umda ongaphezulu we-100-metres yokuhanjiswa komgama wesibini esijijekileyo?Oku kufuna ukuntywila nzulu kwimigaqo enzulu yomzimba yesi sibini sijijekileyo.Ukuhanjiswa kwenethiwekhi ngokwenene kukuhanjiswa komqondiso womnatha kumgca wesibini ojijekileyo.Njengomqondiso we-elektroniki, xa uhanjiswa kumgca wesibini ojijekileyo, kufuneka uchaphazeleke ngokuchasana kunye nomthamo, okhokelela ekuthotyweni kunye nokuphazamiseka kwesignali yenethiwekhi.Xa ukuthotywa okanye ukuphazamiseka kwesiginali kufikelela kwinqanaba elithile, ukuhanjiswa okusebenzayo kunye nokuzinza kwesiginali kuya kuchaphazeleka.Ke ngoko, isibini esijijekileyo sinomda wothumelo lomgama.

3. Ubuninzi bomgama wekhebula ngexesha lokwakhiwa kwangempela

Inokubonwa ukusuka ngasentla ukuba kutheni ubude obude bentambo yenethiwekhi akufanele budlule iimitha ezili-100 xa usebenzisa umbane we-PoE.Nangona kunjalo, ekwakhiweni kwangempela, ukwenzela ukuba kuqinisekiswe umgangatho weprojekthi, ngokuqhelekileyo kuthatha i-80-90 yeemitha.

Nceda uqaphele ukuba umgama wothumelo apha ubhekiselele kwizinga eliphezulu, njenge-100M.Ukuba izinga liyancitshiswa libe yi-10M, umgama wothumelo unokwandiswa ukuya kwi-150-200 yeemitha (kuxhomekeke kumgangatho wentambo yenethiwekhi).Ngoko ke, umgama wokuhanjiswa kombane we-PoE awunqunywanga yi-teknoloji ye-PoE, kodwa ngohlobo kunye nomgangatho wentambo yenethiwekhi.