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    • 3. 发明公开
    • Signal sampling with sampling and reference paths
    • Signalabtastung mit Abtast-和Referenz-Pfad
    • EP1385014A3
    • 2004-06-02
    • EP02017333.2
    • 2002-08-02
    • Agilent Technologies Inc. a Delaware Corporation
    • Moll, JoachimBurger, Thomas
    • G01R31/319H04L7/033
    • G01R31/31908G01R31/3191H04L7/0008H04L7/0331
    • A signal-analyzing unit (10) comprises a sampling path (30) and a reference path (200) both receiving a digital test signal (20). The sampling path (30) comprises a first comparator (50) for comparing the test signal (20) against a first threshold value (Vth1) and providing a first comparison signal (50A) as result of the comparison, and a first sampling device (60) for receiving as input the first comparison signal (50A) together with a first timing signal (70) comprising a plurality of successive first timing marks, wherein the first sampling device (60) is adapted to derive a value of the first comparison signal (50A) for one or more of the first timing marks. The reference path comprises a second comparator (100) for comparing the test signal (20) against a second threshold value (Vth2) and providing a second comparison signal (100A) as result of the comparison, and a second sampling device (260) for receiving as input the second comparison signal (100A) together with a second timing signal (270) comprising a plurality of successive second timing marks, wherein the second sampling device (260) is adapted to derive a value of the second comparison signal (100A) for one or more of the second timing marks. An analysis unit (80) is provided for receiving and jointly analyzing the output of both of the sampling (30) and reference (200) path.
    • 信号分析单元(10)包括接收数字测试信号(20)的采样路径(30)和参考路径(200)。 采样路径(30)包括用于将测试信号(20)与第一阈值(Vth1)进行比较并提供作为比较结果的第一比较信号(50A)的第一比较器(50)和第一采样设备 60),用于接收第一比较信号(50A)以及包括多个连续的第一定时标记的第一定时信号(70),其中第一采样装置(60)适于导出第一比较信号 (50A)用于一个或多个第一定时标记。 参考路径包括用于将测试信号(20)与第二阈值(Vth2)进行比较并提供作为比较结果的第二比较信号(100A)的第二比较器(100)和用于 以及包括多个连续的第二定时标记的第二定时信号(270)作为输入接收第二比较信号(100A),其中第二采样装置(260)适于导出第二比较信号(100A)的值, 用于一个或多个第二定时标记。 提供分析单元(80),用于接收和共同分析采样(30)和参考(200)路径两者的输出。
    • 4. 发明公开
    • Signal sampling with sampling and reference paths
    • 采样和参考路径的信号采样
    • EP1385014A2
    • 2004-01-28
    • EP02017333.2
    • 2002-08-02
    • Agilent Technologies Inc. a Delaware Corporation
    • Moll, JoachimBurger, Thomas
    • G01R31/319
    • G01R31/31908G01R31/3191H04L7/0008H04L7/0331
    • A signal-analyzing unit (10) comprises a sampling path (30) and a reference path (200) both receiving a digital test signal (20). The sampling path (30) comprises a first comparator (50) for comparing the test signal (20) against a first threshold value (Vth1) and providing a first comparison signal (50A) as result of the comparison, and a first sampling device (60) for receiving as input the first comparison signal (50A) together with a first timing signal (70) comprising a plurality of successive first timing marks, wherein the first sampling device (60) is adapted to derive a value of the first comparison signal (50A) for one or more of the first timing marks. The reference path comprises a second comparator (100) for comparing the test signal (20) against a second threshold value (Vth2) and providing a second comparison signal (100A) as result of the comparison, and a second sampling device (260) for receiving as input the second comparison signal (100A) together with a second timing signal (270) comprising a plurality of successive second timing marks, wherein the second sampling device (260) is adapted to derive a value of the second comparison signal (100A) for one or more of the second timing marks. An analysis unit (80) is provided for receiving and jointly analyzing the output of both of the sampling (30) and reference (200) path.
    • 信号分析单元(10)包括接收数字测试信号(20)的采样路径(30)和参考路径(200)。 采样路径(30)包括用于将测试信号(20)与第一阈值(Vth1)进行比较并提供作为比较结果的第一比较信号(50A)的第一比较器(50),以及第一采样装置 60),用于接收作为输入的第一比较信号(50A)以及包括多个连续的第一定时标记的第一定时信号(70),其中第一采样装置(60)适于导出第一比较信号 (50A)用于一个或多个第一定时标记。 所述参考路径包括用于将所述测试信号(20)与第二阈值(Vth2)进行比较并且提供作为所述比较结果的第二比较信号(100A)的第二比较器(100),以及用于以下操作的第二采样装置 将第二比较信号(100A)与包括多个连续的第二时序标记的第二时序信号(270)一起作为输入接收,其中第二采样器件(260)适于导出第二比较信号(100A)的值, 用于一个或多个第二定时标记。 提供分析单元(80),用于接收并联合分析采样(30)和参考(200)路径两者的输出。
    • 6. 发明公开
    • Time interval analysis of digital data
    • Zeitintervallanalyse digitaler Daten
    • EP1845385A1
    • 2007-10-17
    • EP06112885.6
    • 2006-04-21
    • Agilent Technologies, Inc.
    • Moll, Joachim
    • G01R31/317
    • G04F10/00G01R31/31725G01R31/31937
    • The invention refers to determining time characteristics of one or more data signals (D1) comprising a sequence of a plurality of bits, comprising providing a first sample value (A1) at a first time (T1) within a region of a first signal transition (E1, E3) and providing a second sample value (A2) at a second time (T2) within a region of a second signal transition (E2, E4) of the one or more data signals (D1), retrieving an edge model (EM1, EM2) of the signal edges (E1, E2, E3, E4) describing the signal magnitude over the time of the data signal (D1), determining from said edge model a first time difference (Δt1) between the first sample value (A1) and a defined signal value and a second time difference (Δt2) between the second sample value (A2) and the defined value, and determining the timing characteristics on the base of the second time difference (Δt2) and the first time difference (Δt1).
    • 本发明涉及确定包括多个比特序列的一个或多个数据信号(D1)的时间特性,包括在第一信号转换区域内的第一时间(T1)提供第一采样值(A1) E1,E3),并且在所述一个或多个数据信号(D1)的第二信号转换(E2,E4)的区域内在第二时间(T2)提供第二采样值(A2),检索边缘模型(EM1 描述在数据信号(D1)的时间内的信号幅度的信号边缘(E1,E2,E3,E4)的EM2,EM2),从所述边缘模型确定第一样本值( A1)和第二样本值(A2)和定义值之间的定义的信号值和第二时间差(“t2”),并且基于第二时间差(“t2”)和第一时间 差(“t1”)。
    • 8. 发明公开
    • Signal generation
    • 信号发生器
    • EP1724923A1
    • 2006-11-22
    • EP05104301.6
    • 2005-05-20
    • Agilent Technologies, Inc.
    • Moll, JoachimMuecke, Martin
    • H03K5/05H03K7/08H03M3/02
    • G06F1/0328G06F1/022H03K5/05
    • The invention relates to a signal generator (3) for generating a sequence of digital values according to a reference clock signal, comprising at least one input terminal (32, 33, 34) for receiving a an increment signal (INC) and an offset signal (Φ1, Φ2), a start value circuit (302) adapted for determining a counter start value on the base of the offset signal (Φ) and the increment signal (INC), a counter being adapted to be set to the start value, and to change the counter position at each cycle of the reference clock signal to a new value according to the increment signal (INC) until a defined value is achieved, and an output terminal for outputting the counter values.
    • 本发明涉及一种用于根据参考时钟信号产生数字值序列的信号发生器(3),包括用于接收增量信号(INC)和偏移信号的至少一个输入端(32,33,34) (| 1,| 2),适于基于偏移信号(|)和增量信号(INC)确定计数器起始值的起始值电路(302),适于被设置为开始的计数器 值,并且根据增量信号(INC)将基准时钟信号的每个周期的计数器位置改变为新值直到达到定义的值,以及输出端子用于输出计数值。
    • 9. 发明公开
    • Digital signal analysis with evaluation of selected signal bits
    • 分析von digitalen Signalen mit AuswertungausgewählterSignalbits
    • EP1863214A1
    • 2007-12-05
    • EP07101164.7
    • 2007-01-25
    • Agilent Technologies, Inc.
    • Moll, Joachim
    • H04L1/24
    • H04L1/242H04L1/205
    • The invention refers to analyzing a digitally modulated test signal (S) received from a device under test -DUT-, comprising providing a first sampled signal (D1) by assigning a first sequence of digital values as result of a level comparison of the test signal (5) with a first threshold (Vth1) at first successive timing points (TS1), generating a first masking signal (M1) indicating matches between a second sequence of digital values (D2, D2') expected from the DUT and one or a plurality of first data patterns, and analyzing the first sampled signal (D1) in conjunction with the masking signal (M1).
    • 本发明涉及分析从被测设备-DUT-接收的数字调制测试信号(S),包括通过分配测试信号的电平比较结果的第一数字值序列来提供第一采样信号(D1) (5)在第一连续定时点(TS1)处具有第一阈值(Vth1),产生指示从DUT所期望的第二数字值序列(D2,D2')与一个或一个或多个数字值的匹配的第一掩蔽信号(M1) 多个第一数据模式,并结合屏蔽信号(M1)分析第一采样信号(D1)。