Yuav ua li cas yog Poe-adapter. Hwj chim tshaj Ethernet

Lub ib txwm niaj hnub NWS-specialist hom cable "twisted khub", los ntawm cov uas PCs yuav ua tau networked, yog muab zais ib tug zoo kawg li lub sij hawm. Qhov tseeb yog hais tias los ntawm lawv muaj peev xwm yuav kis tau tsis tsuas mus rau cov ntaub ntawv kwj, tab sis kuj lub hwj chim. Poe-adapter - rau li no ntxiv ntaus ntawv yuav tsum tau siv. Txawm li cas los, muaj ib tug loj tus naj npawb ntawm ntau yam thiab txoj kev ntawm cov ntaub ntawv pab kiag li lawm mus txuas rau lub network. Yuav ua li cas yog cov specifics ntawm lub tshuab?

Cov ntaub ntawv hais txog lub ntaus ntawv

Poe-adapter - qhov no ntaus ntawv, pab kom tau Poe-technology uas tso cai rau koj mus rau cov hloov ntawm ib tug pa twisted-khub hwj chim rau tus xav ntaus ntawv. Nyob rau hauv cov ntaub ntawv no, lub Ethernet-cable tus muaj peev xwm mus pauv cov Pib ntsais koj teeb yuav tsis ploj, thiab cov network yog tag nrho haumxeeb.

Deciphering abbreviations Poe - Fais fab tshaj Ethernet. Qhov ntawd yog "lub hwj chim tshaj Ethernet txheem." Poe-adapter yog tej zaum raug xa mus rau raws li "injector" - tab sis ob hom kev ntaus ntawv yog tseem muaj tseeb yuav tau xav txog variation ntawm cov thawj. Peb kawm cov kev siv ntawm cov qhia kev ntaus hauv lub ntsiab lus teb ntawm kev koom tes ntawm Poe-technology muaj peev xwm ua.

Nyeem ntxiv txog qhov kev technology

Technology Hwj chim tshaj Ethernet tso cai rau koj mus muab hwj chim rau ib tug ntau yam ntawm hom ntawm pab kiag li lawm: Wi-Fi-routers, cov koob yees duab, cia li. Lub ntsiab kom zoo dua ntawm no technology yog hais tias nws yuav ua kom muaj ib zaug xwb set nyob ntawm tej - rau ob qho tib si ntawm cov tshaj tawm hauv xov Pib ntsais koj teeb, thiab rau muab hluav taws xob.

Raws li ib tug tshwm sim, lub installation ntawm tes hauj lwm muaj yog tsis muaj yuav tsum tau pw nyob ntawm tej rau nyob, raws li zoo raws li rau nruab qhov tsim nyog ntxiv hluav taws xob khoom. Nyob rau hauv tej rooj plaub, lub installation ntawm lub hwj chim cables tej zaum yuav nyuab los ntawm suboptimal lub cev qhov chaw nyob ntawm lub network Cheebtsam. Piv txwv li, nws tshwm sim hais tias lub Wi-Fi-adapter muab qhov zoo tshaj plaws lub teeb liab ntawm qhov point uas nyob hauv tsev uas yuav coj hluav taws xob problematic. Ib yam yuav hais txog cov koob yees duab: tej zaum nws yuav tsum tsim nyog los saib xyuas tej thaj chaw uas tsis yooj yim rau muab lub hwj chim.

Poe technology tso cai rau kom npaj kev twb kev txuas ntawm pab kiag li lawm rau hauv ib qho hluav taws xob, uas muaj peev xwm, raws li peb sau tseg saum toj no, thaum lub sij hawm tso zis ntaus ntawv nyob rau hauv lub network thiab thov hwj chim rau nws. Qhov no mus kom ze yuav ua hauj lwm nyob rau hauv cov ntaub ntawv ntawm kho kom zoo dua cov tam sim no network infrastructure. Nws yog tiag tiag coj lub hwj chim rau tus uas twb muaj lawm outlets.

zoo ntawm lub tshuab

Yog li ntawd, tau hais tias yuav saib lub ntsab lug tseem ceeb kev pab cuam ntawm technology nyob rau hauv lo lus nug, lawv yuav ua kom muaj raws li nram no daim ntawv teev:

- kev siv ntawm cov tib cable yog tau ob leeg mus muab lub hwj chim thiab rau cov kev pauv ntawm cov ntaub ntawv;

- tau nyiaj txiag pab uas txuam nrog rau kev qhaj ntawv ntawm qhov yuav tsum tau rau nruab hwj chim cables thiab lwm yam tsim nyog cov khoom;

- achieves ib theem siab ntawm kev ruaj ntseg network coj hom infrastructure, ua tsaug rau cov qauv uas ua kom ntseeg tau tus tsim nyog tiv thaiv ntawm Cheebtsam tiv thaiv voltage surges;

- yog tau kho kom zoo dua cov tam sim no network infrastructure, kev sib txuas lus koom haum nyob rau hauv tej thaj chaw uas yav tas los tsis cuag rau mounting vim qhov yuav tsum tau rau tso hluav taws xob cables;

- yog tau Workers tej thaj chaw deb tswj li ntawm network twg.

Peb tam sim no kawm yooj yim qauv rau lub hauv paus uas khiav lag luam Poe-network.

qauv

Cov yooj yim raws tu qauv ntawm cov muab kev koom tes nyob rau hauv lub koom haum uas tsim nyog infrastructure - IEEE 802.3af. Nws yog npaj kom muaj xws li cov network ntaus ntawv hom 2 - hwj chim qhov chaw thiab tau txais kev pab. Lawv yuav ua tau, raws li peb sau tseg saum toj no, Wi-Fi-routers, network cia kiag li lawm. Rau yav tom ntej lub koob yees duab kev ua hauj lwm nyob rau hauv xws systems. Ntawm cov zoo-paub hom manufacturers, ua kua zaub, uas muaj peev xwm sib txuas lus hauv lub Poe-adapter - Axis.

Kua zaub ntawm thawj hom - qhov chaw - yuav tsum tau nyob rau hauv lub pib ib feem ntawm lub network los yog nruab nrab lub handheld ntaus ntawv muab hluav taws xob lub hwj chim, thiab cov neeg siv khoom. Saib txheem enables lub hwj huam mov rau ib tug unshielded cov khub hom kawm txawv - nyob rau hauv particular txhawb 5, 5e thiab 6, ntawm ib tug voltage ntawm 48 V thiab ib lub hwj chim noj ntawm nruab nrab ntawm 15 watts. Nyob rau hauv cov ntaub ntawv no, tsis muaj cawv rau qhov zoo ntawm cov ntaub ntawv kis tau tus mob los ntawm cov cable yog tsis muab thiab ib tug ntau yam pauv loj upgrading ntawm qhov tam sim no network infrastructure nyob rau hauv lub nam ntawm muaj peev xwm yog tsis xav.

Txoj kev rau kev thov ib tug voltage

Lub network, uas ua hauj lwm nyob rau hauv lub hauv paus ntawm lub hwj chim tshaj Ethernet standard, yuav tsum muaj hluav taws xob los ntawm ob schemes.

Firstly, nws yog tej zaum yuav siv nyob rau hauv qhov kawg seem ntawm kab teeb liab transformers, yuav tsum tau dej num raws li siab. Cov mov voltage yog thov mus rau lub chaw coj mus rhaub rau lawv. Ib yam li ntawd nrog lawv, tab sis kuj nyob rau hauv lub txais sab, lub voltage yog muab tshem tawm. Tej technology ua rau nws tau siv lub tib lub khub nyob ntawm tej rau broadcasting high-zaus Pib ntsais koj teeb, thiab kis tau tus mob ntawm hluav taws xob.

Ob txhais, ib tug yuav siv nyob rau hauv kev txiav txim mus rau kis hwj chim muaj khub tam sim no nyob rau hauv cov coj hom cable. Yuav ua li cas yog no ua tau? Qhov tseeb yog tias nyob rau hauv kev xyaum 2 of 4 khub niam txiv uas yog nyob rau hauv Ethernet-cable, yog feem ntau tsis siv. Ntawm cov hoob kawm, thaum nws tawm los rau lawv ua raws li nrog rau 100 Base TX technology.

Cov cai tseem ntawm kev khiav hauj lwm ib tug network nyob rau hauv Poe hom assumes uas cov kev siv ntawm cov injectors yuav nyob ntawm seb txoj kev twg - ua ntej los yog ob kis voltage. Yog li, lub possibilities cim 802.3af txheem tso cai rau hluav taws xob kis tau tus mob mus rau ib tug khub ntawm cords los yog 1.2, e.g., 4.5 cable. Nyob rau hauv lem, tus injectors yuav ua tau siab tshaj lub 100 Base TX technology. Txawm li cas los, yog hais tias nws yog ib tug splitter, ces lawv yuav tsum ua hauj lwm nrog ib yam ntawm cov fais fab kis schemes hais saum toj no, txawm yog hais tias tus polarity ntawm cov kev sib txuas yuav tsum tau hloov.

Hom Poe-khoom

Muaj ntau ntau cov chav kawm ntawv ntawm cov khoom uas muaj peev xwm ntawm kev khiav hauj lwm nyob rau hauv lub hwj chim kis tau tus mob hom tshaj cov khub. Poe-Adapter - ib tug ntawm lawv (cov coj kua zaub muaj ib tug loj tus naj npawb ntawm cov hom - peb yuav kawm lawv cov tseem). Nrog rau nws, tseem muaj Poe-keyboards, raws li zoo raws li siv kiag li lawm. Nyob rau hauv Feem ntau, lawv yuav tsum tau kev mus rau hauv ib tug system. Cia peb kawm txog cov specifics ntawm txhua tus ntawm cov xaiv hom ntawm cov khoom ntau.

haus pab kiag li lawm

Siv pab kiag li lawm - yog, nyob rau hauv qhov tseeb, lub tib network Kua zaub, uas muaj hwj chim dua cov khub. Ib qho tseem ceeb cov yam ntxwv ntawm lawv - lub tswv yim impedance. Cov coj daim duab no feem ntau yog txiav txim nyob rau hauv lub chav 19-26,5 ohms. Feem ntau, tus qauv ntawm lub cev, uas yog kev cob cog rua rau haus pab kiag li lawm, ib tug capacitor yog tseem tam sim no.

keyboards

Poe Hloov yog tsim los kom cov hauj lwm ntawm lub network nyob rau hauv cov nqe lus ntawm paub txog lub correctness ntawm cov cable kev twb kev txuas rau kev nkag ntsiab lus. Network coj hom kev ua hauj lwm raws li 802.3af raws tu qauv, uas peb tau hais los saum no, raws li zoo raws li 802.3at. Lawv cia rau muab kev sis raug zoo ntawm txawv li nyob rau hauv cov nqe lus ntawm tau hwj chim surges. Yog hais tias Poe hloov yog tsis siv, nws yog yuav hais tias vim random variations nyob rau hauv lub tam sim no noj los ntawm lub ntaus ntawv cov khub tsis.

adapters

Kua zaub ntawm no hom, raws li peb sau tseg saum toj no, yog txwv kom muab zais rau ntxiv hom. Yog li ntawd, Poe-adapter yuav ua tau ib lub mov. Nyob rau hauv nws cov qauv, lub hwj huam mov yog tam sim no, raws li zoo raws li conjugation caij, uas yuav tsum tau nruab nrog cais thiab tshwm sim nyob rau hauv cov ntaub ntawv no raws li ib tug me me thawv los yog yuav yog ib tug pa hlau. Hwj chim adapter lub Poe, nyob rau hauv qhov tseeb, tej zaum kuj raug xa mus rau raws li ib tug injector. Nyob rau hauv lub Lavxias teb sab kev ua lag luam muaj ib tug loj tus naj npawb ntawm no hom ntawm kev daws. Piv txwv li, qhov nrov Adapter Poe TP Link 150S. Qhov tseem ceeb tshaj kev cov yam ntxwv ntawm cov coj hom devaysa - stabilized voltage. Optimum kev kawm yog xav tau 48, yog hais tias peb tham txog cov qauv cim los ntawm TP Link.

Lwm hom Poe-adapter - noj. Nws, txawm li cas los, kuj tshuab txais los muab hwj chim li ntawm cov khub, tab sis tsuas yog cov uas tsis dej num raws li siv. Nyob rau hauv kev txiav txim rau xws khoom mus muaj nuj nqi, nws yog ntshaw tias nws muaj peev xwm tsis ntau tshaj 24 watts. Nws yuav tsum tau muab sau tias nyob rau hauv lub moj khaum ntawm no hauv chav kawm ntawv ntawm pab kiag li lawm faib Kua zaub, teej tug mus rau hauv qeb ntawm splitters. Nyob rau hauv qhov tseeb, lawv muaj peev xwm kuj yuav ntaus nqi mus rau haus pab kiag li lawm.

Yog hais tias peb tham txog Poe-adapters, splitters yog, lawv yog tsim los ua hauj lwm nrog rau lwm cov hom ntawm pab kiag li lawm - Poe-Mus. Qhov ntawd yog lawv lub ntsiab muaj nuj nqi - lub sib cais ntawm network cov ntaub ntawv mus rau hauv nyias muaj nyias kev ntws rau tom ntej tawm ntawm tus dais uas tsis yog rau hauv qeb ntawm siv kiag li lawm. Splitters yog lub luag hauj lwm rau cov voltage transformation uas yog thov mus rau lawv, mus rau cov neeg theem uas yog zoo rau lub davhlau ya nyob twg khoom - piv txwv li, tej zaum nws yuav nyob rau hauv cov nuj nqis 5, 12 los yog 48 V.

Nyob rau hauv lem, tus splitters kuj txwv kom muab zais rau hauv ob hom - active thiab passive. Raws li rau cov thawj, lawv yuav ua raws li ib tug mus, thiab nrog mov adapters. Xws li muaj xws li, piv txwv li, splitter hom DWL-P50 los ntawm D-Link. Poe-adapter dej num raws li ntaus ntawv hom nyob rau hauv kev saib xyuas tej zaum yuav kuj yuav passive. Lawv muaj peev xwm tsuas ua hauj lwm nrog injectors. Nyob rau hauv cov ntaub ntawv no, lawv yog cov kws txawj, lawv muaj feem ntau muag ua ke nrog lawv nyob rau hauv ib tug nkaus xwb pob.

Nuances ntawm lub lag luam adapters

Nrog zoo kev twb kev txuas adapters Enables Hwj chim tshaj Ethernet technology, cov teeb meem nrog rau cov koom haum ntawm lub network lag luam yuav tsum tsis txhob tshwm sim. Tab sis ib co teeb meem, vim hais tias ntawm cov kev qauv siv nyob rau hauv xws tshuab tseem tshwm sim. Piv txwv li, Poe-Mus yuav txiav txim hais tias tus active qhov chaw ntaus ntawv yog tsis haus mas, thiab network yuav mus ib ntus de-energized los ntawm lub fact tias cov system yog ua nyob rau hauv lub passive splitter. Nws yog tsim nyog, nyob rau hauv lem, hloov nws nrog ib tug active. Lwm tau teeb meem - tawm voltage thaum koj sim mus txuas rau haus ntaus ntawv mus rau tus tes hloov qhov. Nws muaj peev xwm yuav daws tau los ntawm txhim kho ntxiv devaysa - Poe-converter.

Ib tug interesting tseeb yog tias nyob rau hauv cov nqe lus ntawm cov nqi ntawm tus enterprise, uas yog routed network, nrog ib tug me me muaj pes tsawg tus ntawm pab kiag li lawm siv ntau muaj txiaj ntsim rau siv passive Kua zaub, nrog ib tug loj - active. Ib txhia NWS-tshwj xeeb ntseeg tau hais tias txawm tom qab lub xov tooj siv cov ntaub ntawv ntsiab lus tshaj 3 daim, koj muaj peev xwm siv active adapters.

Optimum cable hom

Hwj chim tshaj Internet technology los qhia rau hauv kev koom tes yog li cov khub. Tab sis lawv yog, raws li koj paub, ntau hom - piv txwv li, 2 thiab 4 officers. Uas yog ib tug zoo tshaj plaws haum rau lub installation ntawm qhov kev tsim nyog hom network? Raws li kws txawj, lub functionality ntawm cov system yuav cawm siv txhua yam ntawm cable. Tab sis yog hais tias nws yog ib tug hnyav load rau tus tes hloov qhov - piv txwv li, yog tias koj siv tag nrho cov muaj nws ports, cov cable nrog 4 officers - qhov zoo tshaj plaws kev xaiv.