{"id":113746,"date":"2018-08-01T18:31:44","date_gmt":"2018-08-01T18:31:44","guid":{"rendered":"https:\/\/\/un-controleur-de-pse-alimente-sur-ethernet-conforme-ieee-802-3bt\/"},"modified":"2018-08-01T18:31:44","modified_gmt":"2018-08-01T18:31:44","slug":"un-controleur-de-pse-alimente-sur-ethernet-conforme-ieee-802-3bt","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/un-controleur-de-pse-alimente-sur-ethernet-conforme-ieee-802-3bt\/","title":{"rendered":"Un contr\u00f4leur de PSE aliment\u00e9 sur Ethernet conforme IEEE 802.3bt"},"content":{"rendered":"

La PoE pose, par nature, des d\u00e9fis d\u2019\u00e9valuation des PSE aux ing\u00e9nieurs syst\u00e8me et r\u00e9seau. Les PSE sont des alimentations DC multicanaux, intelligentes, qui peuvent \u00eatre activ\u00e9es et d\u00e9sactiv\u00e9es selon des processus normalis\u00e9s, sans perturber les transmissions classiques de donn\u00e9es sur Ethernet. Dans le m\u00eame temps, les tests de conformit\u00e9 sont rendus plus compliqu\u00e9s en raison des demandes de fonctionnement requises par les diff\u00e9rentes configurations de tensions et de polarit\u00e9s.<\/p>\n

L\u2019analyseur PowerSync PSA-3000 de Sifos, 24 ports, pourvu de palettes de tests du PSA-3202- 2 ports, fournit les tests et l\u2019analyse complets automatis\u00e9s des PSE \u00e0 base de LTC4291\/92. Les s\u00e9ries de tests de conformit\u00e9 rigoureux renforc\u00e9es par des analyses sp\u00e9cialis\u00e9es ont valid\u00e9 la conformit\u00e9 du LTC4291\/92 au standard IEEE 802.3at (PoE+), \u00e0 la prochaine norme 802.3bt, et \u00e0 d\u2019autres sp\u00e9cifications propri\u00e9taires. Cette configuration \u00e9volutive et les solutions du test b\u00e9n\u00e9ficient des vastes connaissances dans la PoE et des ann\u00e9es d\u2019exp\u00e9rience pour r\u00e9duire le temps de mise sur le march\u00e9 et permettre le d\u00e9ploiement des r\u00e9seaux PoE IEEE 802.3bt alors que la ratification du standard est pour 2018.<\/p>\n

Lors des tests r\u00e9alis\u00e9s par Analog Devices, l\u2019ensemble PSE LTC4291\/92 a r\u00e9ussi une grande vari\u00e9t\u00e9 de tests, la solution PSA-3000\/3202 \u00e9mulant plusieurs PD (p\u00e9riph\u00e9rique aliment\u00e9) \u00e0 la norme IEEE 802.3bt. La capacit\u00e9 de charge \u00e0 90W en continu d\u2019un PSE 4 paires garantit que le PSE peut supporter le niveau de puissance maximum de 71,3W du PD \u00e0 la norme 802.3bt que ce soit en configuration de PD simple-signature ou double-signature. Le LTC4291\/92 a correctement identifi\u00e9 toutes les classes de couches physiques (jusqu\u2019\u00e0 5) comme le requi\u00e8rent les nouveaux PD de Type 3 et de Type 4, ainsi que les PD r\u00e9trocompatibles de Type 1 et de Type 2. Pour les PSE qui utilisent le protocole de d\u00e9couverte de r\u00e9seau (LLDP), le PSA-3000\/3202 peut aussi \u00e9muler et n\u00e9gocier les besoins de puissance.<\/p>\n

Les clients configurent et interagissent avec les dispositifs qui utilisent les GUI et environnements graphiques fournis. Le LTC4291\/92 s\u2019appuie sur des sch\u00e9mas test\u00e9s en laboratoire, des conceptions de r\u00e9f\u00e9rence compl\u00e8tes, le GUI QuikEval\u2122 et le code donn\u00e9 en exemple, tandis que le PSA-3000\/3202 est augment\u00e9 par le GUI interactif PSA Interactive GUI et l\u2019environnement graphique PSA PowerShell. <\/p>\n

www.analog.com\/PoE<\/a><\/p>\n

www.analog.com\/LTC4291<\/a><\/p>\n

R\u00e9gulateur \u00b5Module parfait pour le contr\u00f4le des LED<\/a><\/h3>\n

Contr\u00f4leur DC\/DC, mode abaisseur, 150V, consommant seulement 9\u00b5A <\/a><\/h3>\n

G\u00e9n\u00e8rer le bruit du moteur dans les v\u00e9hicules \u00e9lectriques<\/a><\/h3>\n

Un module optique pour r\u00e9duire les fausses alarmes g\u00e9n\u00e9r\u00e9es par les d\u00e9tecteurs de fum\u00e9e<\/a><\/h3>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Analog Devices annonce le LTC4291\/92 de Power by Linear, un ensemble contr\u00f4leur d\u2019alimentation (PSE), \u00e0 4 ports isol\u00e9s, le premier de ce type \u00e0 r\u00e9ussir une s\u00e9rie de tests de conformit\u00e9 d\u2019alimentation par c\u00e2ble Ethernet (PoE) \u00e0 la norme IEEE 802.3bt (PoE++), tests g\u00e9r\u00e9s par Sifos Technologies. <\/p>\n","protected":false},"author":9,"featured_media":113747,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1141],"class_list":["post-113746","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"Un contr\u00f4leur de PSE aliment\u00e9 sur Ethernet conforme IEEE 802....<\/title>\n<meta name=\"description\" content=\"Analog Devices annonce le LTC4291\/92 de Power by 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