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公开(公告)号:US07573891B1
公开(公告)日:2009-08-11
申请号:US10094743
申请日:2002-03-11
CPC分类号: H04B3/542 , H04B2203/5408 , H04B2203/5441 , H04B2203/5445 , H04B2203/5458 , H04B2203/5466 , H04B2203/5483
摘要: Disclosed are systems and methods which provide communications to a subscriber level of a network using a hybrid communication network. Preferred embodiments of a hybrid communication network of the present invention provide communications using both fiber media and electrically conductive media. Preferred embodiments of the present invention bring fiber optic cables to a point just beyond the last transformer before a subscriber in the power grid. At a point on the subscriber side of the last transformer, e.g., a low voltage subscriber distribution point transformer, the communication signal is preferably coupled from the fiber optic cable of the preferred embodiment to the power transmission line.
摘要翻译: 公开了使用混合通信网络向网络的订户级提供通信的系统和方法。 本发明的混合通信网络的优选实施例提供了使用光纤介质和导电介质的通信。 本发明的优选实施例在电网中的用户之前将光纤电缆连接到刚好超出最后一个变压器的点。 在最后一个变压器的用户侧的一点,例如低压用户分配点变压器,通信信号优选地从优选实施例的光纤电缆耦合到输电线路。
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公开(公告)号:US4760330A
公开(公告)日:1988-07-26
申请号:US871450
申请日:1986-06-06
申请人: Joseph L. Lias, Jr.
发明人: Joseph L. Lias, Jr.
IPC分类号: G01R31/319 , G01R31/28
CPC分类号: G01R31/31926 , G01R31/31907
摘要: A plurality of units under test (UUTs) are coupled to a plurality of programmable test instruments via a switching network, whereby the test instruments are shared by test stations each associated with a respective UUT. The test stations communicate with a processor via respective serial ports to execute test programs for testing UUTs. The processor controls the switching network via a parallel port to set up desired connections, and programs the test instruments, via a bus interface and a bus to which all of the test instruments are coupled, for performing desired tests, in dependence upon the respective test program. The switching network is made up of switching modules. Each test station can include a bar code reader for reading information from the respective UUT.
摘要翻译: 被测试的多个单元(UUT)通过交换网络耦合到多个可编程测试仪器,由此测试仪器由与每个UUT相关联的测试站共享。 测试站通过相应的串行端口与处理器进行通信,以执行用于测试UUT的测试程序。 处理器通过并行端口控制交换网络以建立所需的连接,并通过总线接口和所有测试仪器耦合的总线对测试仪器进行编程,以便根据相应的测试进行所需的测试 程序。 交换网络由交换模块组成。 每个测试台可以包括用于从相应的UUT读取信息的条形码阅读器。
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