PoE controller passes IEEE 802.3bt Conformance Tests

PoE controller passes IEEE 802.3bt Conformance Tests

By eeNews Europe

The tests were completed by Sifos Technologies. Compliance test suites run on the Sifos 24-port PSA-3000 PowerSync analyzer with multiple 2-port PSA-3202 test blades and augmented by specialised analysis features validated the LTC4291/92 to IEEE 802.3at (PoE+), the upcoming 802.3bt standard, as well as proprietary specifications.

In-house testing by Analog Devices saw the LTC4291/92 PSE chipset passing a wide variety of tests as the PSA-3000/3202 solution emulated a variety of IEEE 802.3bt PDs (powered devices). Continuous 90W 4-pair PSE loading capability ensured that the PSE could handle 802.3bt’s 71.3W maximum PD power level in either single- signature or dual-signature PD configurations. The LTC4291/92 correctly identified all physical layer classes (up to 5 events) as required by the new Type 3 and Type 4 PDs, as well as the backward compatible Type 1 and Type 2 PDs. For PSEs that use the link layer discovery protocol (LLDP), the PSA-3000/3202 can also emulate and analyse this type of power negotiation.

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