公开(公告)号：US09203730B1

公开(公告)日：2015-12-01

申请号：US13798422

申请日：2013-03-13

申请人： Sifos Technologies, Inc.

发明人： Peter G. Johnson ,  John H. Skinner ,  Kendrick R. Bennett

IPC分类号： H04J3/16 ,  H04L12/26

CPC分类号： H04L43/50 ,  H04L43/08

摘要： 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.

摘要翻译： 方法和装置提供了一种系统来测量收发器参数并在物理层测试网络接口，而不需要专门的接口夹具和过度的准备和干预。

公开(公告)号：US10060965B1

公开(公告)日：2018-08-28

申请号：US14489792

申请日：2014-09-18

申请人： Sifos Technologies, Inc.

发明人： John H. Skinner ,  Kendrick R. Bennett ,  Peter G. Johnson

IPC分类号： G01R31/08 ,  G01R21/06 ,  G01R21/133

CPC分类号： G01R31/086 ,  G01R21/06 ,  G01R21/133 ,  H04L12/10 ,  H04L12/40045

摘要： 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.