PoE hloov yog hloov pauv uas txhawb nqa lub zog rau lub network cable. Piv nrog rau cov keyboards zoo tib yam, lub hwj chim txais lub davhlau ya nyob twg (xws li AP, lub koob yees duab digital, thiab lwm yam) tsis tas yuav tsum tau xaim rau lub zog hluav taws xob, uas yog qhov txhim khu kev qha rau tag nrho lub network.Hnub no,JHA Technologyyuav ua kom paub cov thev naus laus zis thiab qhov zoo ntawm POE keyboards kom ntxaws ntawm no.

Qhov sib txawv ntawm PoE keyboards thiab cov keyboards zoo tib yam

Lub PoE hloov tsis tau tsuas yog muab kev sib txuas lus ntawm qhov hloov pauv zoo tib yam, tab sis kuj muab lub zog ua haujlwm rau lwm qhov kawg ntawm lub network cable. Piv txwv li, muaj lub koob yees duab digital soj ntsuam (uas yuav tsum muaj lub zog siv hluav taws xob ua haujlwm ib txwm), tab sis tsis txuas nrog lub zog hluav taws xob, tab sis txuas nrog ib qho kev hloov pauv los ntawm lub network cable. Hauv qhov no, lub koob yees duab tsis ua haujlwm. Yog tias lub koob yees duab tsis txuas nrog lub zog hluav taws xob, tab sis nws txoj kev sib txuas lus cable txuas nrog PoE hloov, lub koob yees duab tuaj yeem ua haujlwm ib txwm.

PoE muab faib ua tus qauv thiab tsis yog tus qauv. Tus qauv yuav kuaj xyuas seb cov cuab yeej txuas nrog lub network puas muaj PoE lub zog tau txais qhov kawg. Yog tias muaj, nws yuav siv tau, yog tias tsis yog, nws yuav tsis siv hluav taws xob thiab tsuas yog muab cov ntaub ntawv xa mus. Yog tias nws tsis yog tus qauv, nws yuav muab lub zog ncaj qha. Yog tias tsis pom qhov txuas no, cov khoom siv yuav raug hlawv.

POE hloov tshuab thiab qhov zoo

Muaj ob tus qauv rau cov khoom siv hluav taws xob PoE hauv kev ua lag luam, IEEE802.3af thiab 802.3 ntawm, uas feem ntau txhais tau lub hwj chim ntawm 15.4W thiab 30W, tab sis vim qhov poob hauv cov txheej txheem sib kis, qhov tseeb fais fab mov yog 12.95W thiab 25.5W, ntsuas voltage Nws yog DC 48v. Thaum siv PoE hloov pauv uas txhawb nqa tus qauv IEEE802.3af, lub zog ntawm cov khoom siv hluav taws xob tsis tuaj yeem tshaj 12.95W; Ib yam li ntawd, thaum siv PoE hloov ntawm IEEE802.3at tus qauv, lub zog ntawm cov khoom siv fais fab tsis tuaj yeem tshaj 25.5W.

Feem ntau, PoE hloov pauv uas txhawb nqa IEEE802.3af / ntawm tus qauv tib lub sijhawm, cov khoom siv hluav taws xob hloov pauv. Piv txwv li, yog tias nws txuas nrog 5W ntaus ntawv, nws muab 5W ntawm lub zog; Yog tias nws txuas nrog 20W ntaus ntawv, nws muab 20W ntawm lub zog.A PoE hloov yog qhov hloov pauv uas txhawb nqa lub zog rau lub network cable. Piv nrog rau cov keyboards zoo tib yam, cov khoom siv hluav taws xob (xws li APs, cov koob yees duab digital, thiab lwm yam) tsis tas yuav tsum tau xaim rau lub zog hluav taws xob, uas muaj kev ntseeg siab dua rau tag nrho lub network. Lub PoE hloov tsis tau tsuas yog muab kev sib txuas lus ntawm qhov hloov pauv zoo tib yam, tab sis kuj muab lub zog ua haujlwm rau lwm qhov kawg ntawm lub network cable. PoE rov qab-kawg ntaus ntawv tsuas yog xav tau ib lub network cable, uas txuag chaw, tuaj yeem txav tau ntawm qhov siab (yooj yim thiab yooj yim), thiab txuag nqi.

Ntev npaum li lub PoE hloov pauv txuas nrog UPS, nws tuaj yeem muab lub zog rau txhua qhov rov qab-kawg POE-kawg cov khoom siv thaum lub hwj chim tawm. Cov neeg siv tuaj yeem tuaj yeem sib xyaw cov khoom qub thiab cov khoom siv PoE hauv lub network, thiab cov khoom siv no tuaj yeem ua ke nrog Ethernet cables uas twb muaj lawm.