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公开(公告)号：US06931022B1
公开(公告)日：2005-08-16
申请号：US09322708
申请日：1999-05-28
CPC分类号： H04B7/2656 , H04L43/50
摘要： A method for testing a transmission system is disclosed. The method comprises receiving a time division multiplexed (TDM) stream on an input of the transmission system. The method also comprises inserting test data in one or more of the plurality unused fields of the TDM stream. Additionally, the method comprises transferring the TDM stream along a plurality of components of the transmission system and comparing the test data against the transferred test data.
摘要翻译： 公开了一种用于测试传输系统的方法。 该方法包括在传输系统的输入端接收时分复用（TDM）流。 该方法还包括在TDM流的多个未使用字段中的一个或多个中插入测试数据。 此外，该方法包括沿传输系统的多个组件传送TDM流，并将测试数据与传送的测试数据进行比较。
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公开(公告)号：US5761273A
公开(公告)日：1998-06-02
申请号：US579493
申请日：1995-12-27
申请人： Kirk Dow Sanders
发明人： Kirk Dow Sanders
摘要： An integrated circuit is provided for a trunk interface which can test a trunk interface card. Switching circuitry couples tip and ring leads to signal detection circuitry which detects the typical ring and lead signal information. During testing, a test signal is generated which causes the detection circuitry to be coupled to sets of simulated ring and tip test signals which can test the functionality of the integrated circuit and the signal detection circuitry.
摘要翻译： 为可以测试中继接口卡的中继接口提供集成电路。 开关电路将尖端和环形引线耦合到检测典型环路和引线信号信号的信号检测电路。 在测试期间，产生测试信号，其使得检测电路耦合到可以测试集成电路和信号检测电路的功能的模拟环形和尖端测试信号的集合。
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3.发明授权Method and apparatus for configuring plurality of devices on printed circuit board into desired test port configuration 有权用于将印刷电路板上的多个装置配置成所需测试端口配置的方法和装置公开(公告)号：US07752004B1
公开(公告)日：2010-07-06
申请号：US10754823
申请日：2004-01-09
IPC分类号： G01R31/28
CPC分类号： G01R31/318558 , G01R31/318572
摘要： A system on a circuit board includes a plurality of devices designed to access an electronic system on the circuit board, and a programmable logic device (PLD) connected to the plurality of devices. Each of the plurality of devices complies with a test port architecture. The PLD interfaces the plurality of devices with a test port. The PLD is capable of configuring different connectivity among the plurality of devices based on the program implemented and the assertion of input control signals. A method and apparatus configures a plurality of devices on a circuit board into a desired configuration using the PLD. The configuration includes (a) receiving a control signal at the PLD, (b) configuring at least one of the plurality of devices into a chain based on the control signal, and (c) coupling the configured chain to the test port via the PLD.
摘要翻译： 电路板上的系统包括被设计为访问电路板上的电子系统的多个设备以及连接到多个设备的可编程逻辑设备（PLD）。 多个设备中的每一个符合测试端口架构。 PLD使用测试端口将多个设备连接起来。 PLD能够基于所实现的程序和输入控制信号的断言来配置多个设备之间的不同连接。 方法和装置使用PLD将电路板上的多个设备配置成期望的配置。 该配置包括（a）在PLD处接收控制信号，（b）基于控制信号将多个设备中的至少一个配置成链，以及（c）经由PLD将配置的链路耦合到测试端口 。
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