Ib tug phooj ywg nug seb koj puas tuaj yeem siv txoj kab xov tooj txuas mus rau POE lossis siv plaub lub cores ntawm lub network xaim los ua lub taub hau siv lead ua, ntau tus phooj ywg tsis meej pem yog lub network cable 1236 thiab 4578 lub zog twg? Peb kuj tau xa ib tsab xov xwm zoo sib xws rau lo lus nug no, hnub no peb rov los kom muaj kev nkag siab zoo.
1. Uas xa cov ntaub ntawv raws nraim thiab cov khoom siv fais fab
Standard poe keyboards muaj ob tus qauv, 802.11af thiab 802.11at, thiab ob tus qauv poe keyboards txhawb ob hom:
① 1236 siv cov ntaub ntawv thiab lub zog;
② 1236 go data, 4578 fais fab mov;
2. Hom kev siv fais fab twg yog siv tiag tiag
Lub hwj chim mov hom twg yog siv tiag nyob ntawm qhovPOE hloov, uas yog ob qho tib si sib xws nrog peb POE-enabled koob yees duab. Poe yuav txiav txim nws los ntawm qhov xwm txheej.
Vim yog 1,2,3, thiab 6 plaub cores siv los ntawm 100 megabytes ntawm kev sib txuas lus, gigabit megabytes ntawm kev sib txuas lus siv tag nrho 8 cores.yog li ntawd:
1. Rau 100 trillion PoE hloov: tsuas yog 1,2,3,6 hlau core txuas, ob qho tib si cov ntaub ntawv thiab cov khoom siv fais fab; Yog lawm, yog tias koj xav tau 1236 cov ntaub ntawv, 4578 fais fab mov, tom qab ntawd 8 cores xaim, thiab xyuas kom meej 8 cores tag nrho txuas.
2. Rau Gigabit PoE hloov: txwv los ntawm kev xav tau ntawm cov ntaub ntawv xa mus, txawm li cas los xij, tag nrho 8-core network xov hlau yuav tsum tau txuas nrog tag nrho.
3. Ob txoj hauv kev rau aPOE hloov
Lub IEEE802.3af fais fab mov fais fab yog 15.4W, yog tias lub koob yees duab fais fab yog 10W, 802.af fais fab mov hloov tuaj yeem siv tau;
IEEE802.3at fais fab mov fais fab yog 30W, yog tias lub koob yees duab fais fab yog 20W, 802.3at POE hloov yuav tsum tau siv;
802.3at yog downwards tshaj, yog li 802.3af-enabled lub koob yees duab tuaj yeem siv tau los ntawm 802.3af lossis ntawm cov keyboards;
802.3at-enabled lub koob yees duab tsuas yog siv los ntawm 802.3at keyboards;
Rau qee cov khoom siv hluav taws xob hauv ntej-kawg, xws li lub tshuab pob, lub zog tso zis tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua, tsis tuaj yeem yog P lub POE hloov.
Piv txwv li, lub zog ntawm qee lub tshuab pob yog 40W, thiab lub zog siab tshaj plaws ntawm ib qho chaw nres nkoj PoE tsis ntau tshaj 30W, yog li lub zog ntawm ib qho chaw nres nkoj ntawm qhov hloov pauv tsis tuaj yeem ntsib, yog li POE module ntawm lub tshuab pob yog xav tau. Kuv pom nws yog thaum kuv yuav nws.
4. Ntev npaum li cas POE muab khoom?
Rau qhov poe fais fab mov nyob deb, muaj ntau yam tsis muaj zog tam sim no VIP technology pab pawg phooj ywg tham seb puas muaj peev xwm poe fais fab mov tshaj 100 meters? Qhov teeb meem no muaj tseeb cuam tshuam los ntawm ntau yam, qee cov phooj ywg ntau dua 100 meters ntawm lub zog hluav taws xob tsis muaj kev cuam tshuam, tab sis qee qhov hauv 90 meters ntawm lub zog hluav taws xob kuj tsis ruaj khov, uas peb yuav sib tham ua ke.
Koj yuav tsum pom 200 m, 250 m, 300 m PoE fais fab mov hloov khoom lag luam tshaj tawm ntawm Moments lossis online. Yuav muaj kev tsis ntseeg: lub network cable kis tau tus mob tsis yog 100 meters? Cov kab twg tuaj yeem siv los ua kom tiav qhov kev ncua deb ntawm kev tshaj tawm?
Ntau tshaj 100 meters ntawm kev sib kis mus ntev yuav tsum muaj ntau tshaj 5 pawg, thiab yog 8 core network hlau. Nyob rau tib lub sijhawm, lub poe hloov yog siv los ntawm 8 hlwb, thiab lub koob yees duab yuav tsum tau siv los ntawm 8 hlwb. Lub ntsiab lus tseem ceeb yog tias PoE hloov khoom siv txhawb nqa lub network txuas ntxiv. Tom qab tig rau, thaum siv cov ntaub ntawv xa mus thiab saum toj no network cable, lub hwj huam mov nrug ntawm qhov chaw sib txuas tuaj yeem ncav cuag ntau dua 100 meters. Rau qhov zoo tib yam poe hloov, peb xav tias nws yog qhov tsim nyog tshaj li ntawm 100 meters.
Vim li cas thiaj pom zoo kom siv nws li ntawm 100 meters?
Cia peb saib cov resressistance ntawm ntau yam network xov hlau.
Kev ua haujlwm ntawm 100 meters ntawm ntau yam khoom siv ntawm twisted khub hlau:
1. Copper-clad steel network hlau: 75-100 Ω
2. Copper-clad aluminium mesh hlau: 24-28 Ω
3. Copper pob nyiaj network cable: 15 Ω
4. Copper-coated tooj liab network cable: 42 Ω
5. Anaerobic tooj liab mesh hlau: 9.5 Ω
Qhov kev ncua deb, qhov me dua qhov tsis kam, qhov twg cov anaerobic tooj liab network hlau tsis kam yog qhov tsawg tshaj plaws, yog li siv nws los muab qhov ruaj khov tshaj plaws, 100 meters deb kuj yog 9.5 Ω, yuav ua li cas yog tias siv 50 meters? Tom qab ntawd nws qhov tsis kam yog 9.5 Ω ib nrab, qhov me dua qhov poe fais fab mov poob (poob lub zog ntawm lub mis, Q = I²Rt, qhov poob ntawm lub zog yog proportional rau qhov tsis kam), ces qhov ruaj khov dua lub zog mov. Yog li ntau tshaj 100 meters ntawm kev sib kis deb, nco ntsoov siv lub network cable zoo.
Post lub sij hawm: Nov-02-2022