1. Non-standard PoE uye standard PoE

Kune yakajairwa PoE inoenderana neIEEE 802.3af/at/bt zviyero uye ine chibvumirano chekubata maoko.Non-standard PoE haina chibvumirano chekubata maoko, uye inopa 12V, 24V kana yakatarwa 48V DC magetsi.

Iyo yakajairwa PoE magetsi emagetsi switch ine PoE control chip mukati, iyo ine yekuona basa pamberi pemagetsi.Kana mudziyo wabatanidzwa, iyo PoE magetsi inotumira chiratidzo kunetiweki kuti ione kana iyo terminal mune network iri PD mudziyo unotsigira PoE magetsi.Iyo isiri-yakajairwa PoE chigadzirwa ndeyekumanikidza-kupa network tambo yemagetsi magetsi mudziyo, iyo inopa simba kana ichinge yabatidzwa.Iko hakuna nhanho yekuona, uye inopa simba zvisinei nekuti iyo terminal iri PoE powered mudziyo, uye zviri nyore kwazvo kupisa mudziyo wekupinda.

2. Kuzivikanwa kwakajairika nzira dzeasiri-standard PoE switch

Saka sei kusiyanisa isiri-yakajairwa PoE switch?Nzira dzinotevera dzinogona kuedzwa.

a.Tarisa voltage

Kutanga, tonga kubva kune voltage yekugovera.IEEE 802.3 af/at/bt protocol inotaura kuti chiyero chePoE port output voltage range chiri pakati pe44-57V.Ese akajairwa magetsi ekupa magetsi kunze kwe48V hazvisi-standard zvigadzirwa, senge zvakajairika 12V uye 24V magetsi emagetsi zvigadzirwa.Nekudaro, iyo 48V magetsi inogona kunge isiri yakajairwa PoE chigadzirwa, saka voltage yekuyera chishandiso senge multimeter inodiwa kuti uzviratidze.

b.Kuyera ne multimeter

Tanga mudziyo, gadzirisa iyo multimeter kune iyo voltage kuyerwa chinzvimbo, uye bata mapini emagetsi emuchina wePSE nemapeni maviri emultimeter (kazhinji 1/2, 3/6 kana 4/5, 7/8 yeRJ45. port ), kana mudziyo une kugadzikana kubuda kwe48V kana mamwe ma voltage values ​​(12V, 24V, etc.) akayerwa, isiri-yakajairwa chigadzirwa.Nekuti mukuita uku, PSE haione midziyo ine simba (heino multimeter), uye yakananga inoshandisa 48V kana mamwe mavheti emagetsi ekupa magetsi.

Sezvineiwo, kana voltage isingakwanisi kuyerwa uye tsono yemultimeter inosvetuka pakati pe2 ne18V, ndiyo yakajairika PoE.Nekuti panguva ino, iyo PSE iri kuyedza iyo PD terminal (heino multimeter), uye iyo multimeter haisi yepamutemo PD, iyo PSE haizopi simba, uye hapana yakagadzikana voltage ichagadzirwa.

c.Nekubatsirwa kwezvishandiso zvakadai sePoE detectors

Kuti ufambise kuisirwa kweprojekiti uye manejimendi vashandi kuti vakurumidze kuona uye kuona PoE network mitsara, tarisa kana network inetiweki ine PoE magetsi, ingave PoE iri kushanda zvakajairika, uye kana chishandiso chiri chePoE kana chisiri-standard PoE chigadzirwa, Utop. yakagadzira PoE detector.

Ichi chigadzirwa chinotsigira kuona kwepakati-span (4/5 7/8) uye kuona kwekupedzisira-kwenguva (1/2 3/6), inotsigira IEEE802.3 af/panguva yePoE uye isiri-standard PoE;Probe PoE interface kana tambo.Ingobatanidza iyo PoE detector kune inoshanda network, uye iyo LED iri paPoE detector inovhenekera kana kupenya.Kubwaira zvinoreva mureza wePoE, chiedza chakatsiga zvichireva kuti non-standard PoE.Chidiki chekuona chishandiso chinogona kupa nyore pakuvaka engineering.