Sifos Technologies, Inc.

John H Skinner

Kendrick R Bennett

Peter G Johnson

An apparatus to test an Ethernet powered device includes a processor including a power negotiation supervisor, a DC power source, a first interface having an Ethernet medium dependent interface and a coupling circuit that inserts DC power onto one or more wire pairs of the first interface. The apparatus further includes a first bridging circuit, a measuring circuit to measure characteristics of DC power delivered to Ethernet powered device. The DC power source is configurable over a range of voltage levels including a plurality of operating voltages which are applied to the Ethernet powered device and the power negotiation supervisor processes power negotiation protocol messages.

Method and apparatus for evaluating Ethernet powered devices

Methods and apparatus provide for a system to measure transceiver parameters and test network interfaces at a physical layer without requiring specialized interface fixtures and excessive preparation and intervention.

Growing community of inventors

Billerica, MA, United States of America

John H Skinner