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Linear verifies PoE controllers using Ixia test solution

Posted: 27 Jan 2005 ?? ?Print Version ?Bookmark and Share

Keywords:power over ethernet chipset? ltc4259a quad pse controller? ieee 802.3af?

Linear Technology Corp. has selected Ixia, a provider of high performance IP network testing solutions, to demonstrate and test the full feature capabilities of its power over Ethernet chipset. Linear Technology employs Ixia's power-over-Ethernet (PoE) test solution to verify and demonstrate conformance of the LTC4259A quad PSE controller to the IEEE 802.3af standard for PoE devices.

Currently, Linear Technology is shipping two quad PoE controllers that are fully compliant with the IEEE 802.3af specification. The controllers provide autonomous operation for PSE sequencing through all of the required tasks without processor intervention. The precision measurements for detection, classification and current sensing are performed by dedicated internal circuitry with fully specified accuracy.

The Ixia PoE system verifies PD (Powered Device) detection signature ranges, PD classification, maintain power signature for AC or DC disconnect methods (ACMPS and DCMPS), inrush current limiting, short circuit protection, as well as many other capabilities of the Linear Technology devices. The PoE test system is designed for use with Ixia's line of Ethernet network interfaces, which provide data traffic generation and analysis to verify the power sourcing capabilities of the PSE and to verify that data traffic is not impacted by varying power load conditions as defined by the IEEE 802.3af standard.





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