公开(公告)号：US20050237078A1

公开(公告)日：2005-10-27

申请号：US10829725

申请日：2004-04-22

申请人： James Cannon ,  David Dascher ,  Michael McTigue ,  Stuart Hall

发明人： James Cannon ,  David Dascher ,  Michael McTigue ,  Stuart Hall

IPC分类号： G01R1/067 ,  G01R31/02

CPC分类号： G01R1/06788 ,  G01R1/06711 ,  G01R1/06772

摘要： A micro-browser has pair of rods each rod entering a corresponding bore in a sleeve that retains them, and that may itself be carried by a grip shaped to be rotated between a thumb and a finger. The edge of a small circuit board is soldered at the distal end of the rod. One of the rods is allowed to rotate within its bore in the sleeve, while the other is held stationary by a notch in the sleeve. The rotatable rod has a captive spring that resists the force of probe contact. Each board carries a coupling network connected to a short sharp probe tip bent downward away from the plane of its board, allowing the distance between the probe tips to be a function of the amount of rotation. The other end of each coupling network is coupled to a short length of a respective 50Ω coaxial cable that passes through an axial slot in the grip to enter an amplifier pod that drives a main cable leading to test equipment. The rods may be held within the bores by friction created by slight bends in the rods. The circuit boards each include shields connected together at a location that is as close as possible to the probe tips by arranging that the rods touch each other near the probe tips. If the rods are parallel, then there is a slight bend in the non-rotating rod at the location where it passes the non-probe-carrying edge of the circuit board, such that it touches the corresponding portion of the rotatable rod. If the rods are both straight, then the axes of the rods are coplanar but convergent.

摘要翻译： 微型浏览器具有一对杆，每个杆进入保持它们的套筒中的相应孔，并且其本身可以由形状的手柄携带，以在拇指和手指之间旋转。 小电路板的边缘焊接在杆的远端。 允许其中一个杆在套筒内的孔中旋转，而另一个杆通过套筒中的凹口保持静止。 可旋转杆具有抵抗探针接触力的固定弹簧。 每个板都带有一个耦合网络，该耦合网络连接到从其板的平面向下弯曲的短的尖锐探针尖端，使得探针尖端之间的距离成为旋转量的函数。 每个耦合网络的另一端耦合到通过手柄中的轴向槽的相应的50mega同轴电缆的短长度，以进入驱动通向测试设备的主电缆的放大器盒。 杆可以通过由杆中的轻微弯曲产生的摩擦而保持在孔内。 电路板各自包括通过布置杆在探针尖端附近彼此接触而在尽可能靠近探针尖端的位置处连接在一起的屏蔽。 如果杆是平行的，那么非转动杆在其穿过电路板的非探针承载边缘的位置处有轻微的弯曲，使得它接触可旋转杆的相应部分。 如果杆都是直的，则杆的轴线是共面的但是会聚的。

公开(公告)号：US08270460B2

公开(公告)日：2012-09-18

申请号：US12643138

申请日：2009-12-21

申请人： David Dascher ,  Allen Montijo

发明人： David Dascher ,  Allen Montijo

IPC分类号： H04B3/46 ,  H04B1/10

CPC分类号： H04B15/00

摘要： An apparatus and method for determining if ringing in an output signal from a receiver that processes an input signal is the result of a bandwidth limitation in the receiver that processes an input signal rather than ringing in the input signal is disclosed. The apparatus includes the receiver and a ring suppression filter. The ring suppression filter receives the receiver output signal and generates a ring suppressed output signal therefrom. The receiver and the ring suppression filter provide a first aggregate system response such that the ring suppressed output signal does not include ringing introduced by the receiver. The first aggregate system response is linear in phase.

摘要翻译： 公开了一种用于确定来自处理输入信号的接收机的输出信号中的振铃是处理输入信号而不是在输入信号中振铃的接收机中的带宽限制的结果的装置和方法。 该装置包括接收器和环形抑制滤波器。 环形抑制滤波器接收接收机输出信号并从其产生抑制振铃的输出信号。 接收机和环形抑制滤波器提供第一聚合系统响应，使得环抑制的输出信号不包括由接收机引入的振铃。 第一个聚合系统响应是相位线性的。

公开(公告)号：US20070271049A1

公开(公告)日：2007-11-22

申请号：US11434976

申请日：2006-05-16

申请人： James Carole ,  David Dascher ,  Michael Holloway ,  Richard Eads

发明人： James Carole ,  David Dascher ,  Michael Holloway ,  Richard Eads

IPC分类号： G06F19/00

CPC分类号： G01R31/31709

摘要： A method and system acquires a set of samples of a periodic signal, and calculates a variance between the set of samples and an ideal set of samples to create a variance data set. The method and system further calculates an FFT of the variance data set, filters the calculated FFT of the variance data set, calculates an inverse FFT on the filtered data set, and measures the resulting time domain signal.

摘要翻译： 一种方法和系统获取周期信号的一组样本，并且计算样本集合与理想的样本集之间的方差以创建方差数据集。 该方法和系统进一步计算方差数据组的FFT，对计算出的方差数据集合的FFT进行滤波，对经滤波的数据集计算逆FFT，并测量所得到的时域信号。

公开(公告)号：US20050116727A9

公开(公告)日：2005-06-02

申请号：US10156896

申请日：2002-05-29

申请人： David Dascher

发明人： David Dascher

IPC分类号： G01R1/067 ,  G01R27/08

CPC分类号： G01R1/06772 ,  G01R1/0675 ,  G01R1/06761 ,  G01R1/06788

摘要： A resistive pin for use in a voltage probe includes a pin-head that is configured to contact a test point in a device under test, and a resistor that is attached to the pinhead. Other systems are also provided for establishing electrical connections between testing instruments and devices under test.

摘要翻译： 用于电压探针的电阻引脚包括被配置为接触被测器件中的测试点的引脚头和连接到引脚的电阻器。 还提供了其他系统用于在测试仪器和被测设备之间建立电连接。

公开(公告)号：US20060279376A1

公开(公告)日：2006-12-14

申请号：US11151854

申请日：2005-06-13

申请人： Eric Ehlers ,  David Dascher

发明人： Eric Ehlers ,  David Dascher

IPC分类号： H01P1/22

CPC分类号： H03H11/245

摘要： An integrated step attenuator (“ISA”) monolithically integrated on a single chip for adjusting an input signal. The ISA may include a step attenuation network (“SAN”) that may include at least one switchable attenuation section, and at least one electronically switchable trimming network (“ESTN”). The SAN may be configured to adjust the input signal responsive to the state of a switch that bridges the attenuation sections of the SAN, and the ESTN may be configured to adjust the input signal responsive to the state of a switch in signal communication with one or more shunt resistors in the ESTN.

摘要翻译： 单个集成在单个芯片上用于调整输入信号的集成步进衰减器（“ISA”）。 ISA可以包括可以包括至少一个可切换衰减部分和至少一个电子可切换修剪网络（“ESTN”）的步进衰减网络（“SAN”）。 SAN可以被配置为响应于桥接SAN的衰减部分的开关的状态来调整输入信号，并且ESTN可以被配置为响应于与一个或多个SAN的信号通信的开关的状态来调整输入信号 更多分流电阻在ESTN。

公开(公告)号：US09618599B2

公开(公告)日：2017-04-11

申请号：US13247568

申请日：2011-09-28

申请人： David Dascher

发明人： David Dascher

IPC分类号： G01R35/00

CPC分类号： G01R35/00

摘要： Responses of voltage and current probes are characterized or corrected. A voltage probe method includes measuring output of the voltage probe and a first output of a through, in response to an input signal applied to the through, with the voltage probe connected, measuring a second output of the through with the voltage probe disconnected, and characterizing the response of the voltage probe using the output of the voltage probe and the first and/or second outputs. A current probe method includes measuring output current of the current probe and first output current of a through, in response to an input signal applied to the through with the current probe connected in series, measuring second output current of the through with the current probe disconnected, and characterizing the response of the current probe using the output current of the current probe and the first and/or second output currents of the through.

公开(公告)号：US20130076372A1

公开(公告)日：2013-03-28

申请号：US13247568

申请日：2011-09-28

申请人： David Dascher

发明人： David Dascher

IPC分类号： G01R35/00

CPC分类号： G01R35/00

摘要： Responses of voltage and current probes are characterized or corrected. A voltage probe method includes measuring output of the voltage probe and a first output of a through, in response to an input signal applied to the through, with the voltage probe connected, measuring a second output of the through with the voltage probe disconnected, and characterizing the response of the voltage probe using the output of the voltage probe and the first and/or second outputs. A current probe method includes measuring output current of the current probe and first output current of a through, in response to an input signal applied to the through with the current probe connected in series, measuring second output current of the through with the current probe disconnected, and characterizing the response of the current probe using the output current of the current probe and the first and/or second output currents of the through.

摘要翻译： 电压和电流探头的响应被表征或校正。 电压探针方法包括响应于施加到通孔的输入信号来测量电压探头的输出和通孔的第一输出，连接的电压探头测量电压探头断开的通孔的第二输出，以及 使用电压探头的输出和第一和/或第二输出来表征电压探头的响应。 电流探测方法包括测量电流探头的输出电流和通过的第一输出电流，响应于与串联连接的电流探头施加到通孔的输入信号，测量通过的第二输出电流与电流探头断开 并且使用当前探针的输出电流和通孔的第一和/或第二输出电流来表征当前探针的响应。

公开(公告)号：US20110150068A1

公开(公告)日：2011-06-23

申请号：US12643138

申请日：2009-12-21

申请人： David Dascher ,  Allen Montijo

发明人： David Dascher ,  Allen Montijo

IPC分类号： H04B17/00

CPC分类号： H04B15/00

摘要： An apparatus and method for determining if ringing in an output signal from a receiver that processes an input signal is the result of a bandwidth limitation in the receiver that processes an input signal rather than ringing in the input signal is disclosed. The apparatus includes the receiver and a ring suppression filter. The ring suppression filter receives the receiver output signal and generates a ring suppressed output signal therefrom. The receiver and the ring suppression filter provide a first aggregate system response such that the ring suppressed output signal does not include ringing introduced by the receiver. The first aggregate system response is linear in phase.

摘要翻译： 公开了一种用于确定来自处理输入信号的接收机的输出信号中的振铃是处理输入信号而不是在输入信号中振铃的接收机中的带宽限制的结果的装置和方法。 该装置包括接收器和环形抑制滤波器。 环形抑制滤波器接收接收机输出信号并从其产生抑制振铃的输出信号。 接收机和环形抑制滤波器提供第一聚合系统响应，使得环抑制的输出信号不包括由接收机引入的振铃。 第一个聚合系统响应是相位线性的。