Beschreibung:
Power over Ethernet Interoperability explains how to safely transmit DC power over an existing data network cabling structure so that separate AC electrical wiring is not needed to power up devices connected to the network. With a focus on cost-effective unshielded twisted pair (UTP) cables, this book provides proven methods for designing reliable Power over Ethernet (PoE) equipment and ensuring that it functions effectively. Details on the IEEE 802.3af/at standards and how various devices can operate from PoE are also contained in this practical resource.
Ch. 1 OverviewCh. 2. The IEEE State MachineCh. 3. IEEE Detection, Legacy Detection, and Interoperability StudiesCh. 4. Classification and Inoperability StudiesCh. 5 Power-Up ScenariosCh. 6. Overload Behavior and Over Temperature ProtectionCh. 7. Requirement and Architecture of Powered DevicesCh. 8. Switching Power Conversion Topologies and techniques in PoECh. 9. Meeting Surge and Cable ESD RequirementsCh. 10. Meeting IEC Safety Approvals and Limited Power Supply (LPS) RequirementsCh. 11. Clearance, Creepage, PCB, and Thermal DesignCh. 12. Passing Sifos and UNH TestingCh. 13. PoE Software Architecture and Power ManagementCh. 14. Practical PoE Troubleshooting and Case StudiesCh. 15. UPoE (60W), Single-Pair, and Four-Pair PoE