公开(公告)号：US5086271A

公开(公告)日：1992-02-04

申请号：US464404

申请日：1990-01-12

申请人： Harry K. Haill ,  James R. Birchak ,  Wai-Leung Hon

发明人： Harry K. Haill ,  James R. Birchak ,  Wai-Leung Hon

IPC分类号： G01R31/316 ,  G01R31/319

CPC分类号： G01R31/31924 ,  G01R31/316 ,  G01R31/31905

摘要： A distributed transmission line network for connecting a plurality of DUTs to a low-power driver includes a plurality of distributed transmission lines with distributed capacitors. The distributed capacitors are added to the distributed transmission lines to make the propagation delay on each line equal, thereby eliminating skewed input signals to the DUTs. The capacitors also minimize capacitive cross-talk between the plurality of distributed transmission lines. The distributed transmission line network includes a driver with an internal resistance that is much less than the characteristic impedance of the distributed transmission line to minimize the voltage drop at the driver. The distributed transmission line also includes an input RC network for speeding rise time and a termination RC network for minimizing reflections in the distributed transmission line.

摘要翻译： 用于将多个DUT连接到低功率驱动器的分布式传输线网络包括具有分布式电容器的多个分布式传输线。 将分布式电容器添加到分布式传输线路中，使每条线路上的传播延迟相等，从而消除了对DUT的偏移输入信号。 电容器还使多个分布式传输线之间的电容串扰最小化。 分布式传输线网络包括具有比分布式传输线的特性阻抗小得多的内部电阻的驱动器，以最小化驾驶员的电压降。 分布式传输线还包括用于加速上升时间的输入RC网络和用于最小化分布式传输线路中的反射的终端RC网络。

公开(公告)号：US4296483A

公开(公告)日：1981-10-20

申请号：US164622

申请日：1980-06-30

申请人： Harry K. Haill

发明人： Harry K. Haill

IPC分类号： G01V1/18 ,  G01V13/00

CPC分类号： G01V1/181 ,  G01V13/00

摘要： A geophone testing apparatus includes a plurality of force detectors upon each of which is mounted a corresponding geophone. An electrical step function is applied to the active elements of the geophones to generate mechanical output transients. The mechanical output transients are detected by the force detectors which generate corresponding electrical signals. The signals are analyzed to determine the sensitivity, damping and natural frequency of each of the geophones under test. A multiplexer is provided so that all of the geophones may be tested at the same time.

摘要翻译： 地震检波器测试装置包括多个力检测器，每个力检测器安装有相应的地震检波器。 地震检波器的有源元件应用电阶梯函数以产生机械输出瞬变。 机械输出瞬变由产生相应电信号的力检测器检测。 分析信号以确定被测试的每个地震检波器的灵敏度，阻尼和固有频率。 提供多路复用器，使得所有的地震检波器可以在同一时间进行测试。