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    • 9. 发明授权
    • Method for diagnosing performance problems in cabling
    • 诊断电缆性能问题的方法
    • US06636048B2
    • 2003-10-21
    • US10177627
    • 2002-06-18
    • James R. SciaceroJames G. Tonti
    • James R. SciaceroJames G. Tonti
    • G01R2704
    • G01R31/11G01R31/083
    • The present invention provides an apparatus for using time domain analysis of NEXT, Return Loss and the like, in conjunction with the application of time or distance referenced limits to verify and determine compliance of the performance requirements of connections in a typical link. Time domain analysis of NEXT, Return Loss data and the like suitably provides the performance characteristics of a link as a function of time or distance. When coupled with time or distance performance curves for connections, it can be determined if the transmission fault is at a connection or in the cable. The time limit curves for connections can be generated based on the frequency domain performance requirements for connecting hardware of a specific level of performance. The connection time limit curves thus allows one to determine if the connection is within performance standards, allowing improved isolation of the fault condition.
    • 本发明提供了一种使用NEXT,Return Loss等的时域分析的装置,结合应用时间或距离参考限制来验证和确定典型链路中连接的性能要求的符合性。 NEXT的时域分析,回波损耗数据等适当地提供作为时间或距离的函数的链路的性能特征。 当与连接的时间或距离性能曲线相结合时,可以确定传输故障是在连接处还是在电缆中。 连接的时间限制曲线可以根据连接特定级别的硬件性能的频域性能要求生成。 因此,连接时间限制曲线可以确定连接是否在性能标准之内,从而改善故障状态的隔离。
    • 10. 发明授权
    • Method and apparatus for adaptive cancellation of responses in cabling
    • 在布线中自适应消除响应的方法和装置
    • US06522152B1
    • 2003-02-18
    • US09713383
    • 2000-11-15
    • James G. TontiJames A. PattersonJames R. Sciacero
    • James G. TontiJames A. PattersonJames R. Sciacero
    • G01R2704
    • G01R31/11G01R31/083
    • An Adaptive Vector Cancellation method which uses time domain data for an instrument connection to estimate magnitude, phase, and time position of a signal response such as NEXT or Return Loss associated with the connection. Based on the estimate of the amplitude and time of the connection response, a suitable full-bandwidth frequency response that corresponds to a point source of NEXT or Return Loss is determined. This calculated connector response is then scaled to an appropriate magnitude, phase and time shifted to the estimated position of the actual connection. The scaled/shifted response is then vectorially combined with the measured sweep data to suitably cancel the connection contribution to NEXT and/or Return Loss. Thus, the amount of NEXT or return loss existing in the user's patch cord is preserved, while the NEXT or return loss due to the instrument connection is suitably suppressed. Correction is done in the frequency domain, over the full bandwidth of the measured data.
    • 自适应向量消除方法,其使用时域数据进行仪器连接来估计信号响应的幅度,相位和时间位置,例如与连接相关联的NEXT或回波损耗。 基于连接响应的幅度和时间的估计,确定对应于NEXT或回波损耗的点源的合适的全带宽频率响应。 然后将该计算的连接器响应缩放到适当的幅度,相位和时间移动到实际连接的估计位置。 然后将缩放/移位的响应与测量的扫描数据进行矢量组合,以适当地消除对NEXT和/或回波损耗的连接贡献。 因此,保留了用户接插线中存在的NEXT或返回损耗量,同时适当地抑制了由于仪器连接引起的NEXT或返回损耗。 在测量数据的全部带宽上,在频域进行校正。