公开(公告)号：EP2787355A3

公开(公告)日：2015-03-04

申请号：EP14163527.6

申请日：2014-04-04

Applicant: Tektronix, Inc.

Inventor： PICKERD, John

IPC: G01R13/02 ,  G01R27/30

CPC classification number: G01R13/02 ,  F02P17/00 ,  G01N27/42 ,  G01N31/02 ,  G01R13/0236 ,  G01R27/30 ,  G01R31/24 ,  G01R31/2635 ,  G01R31/44

Abstract: A method of preventing inter-system interference while acquiring waveforms in a test and measurement instrument with variation in a device under test system S-parameters. The method includes receiving a waveform from a device under test at the test and measurement instrument, digitizing the waveform, identifying portions of the digitized waveform with different S-parameter characteristics, separating the identified portions of the digitized waveform into different waveforms, and displaying the different waveforms to a user.

公开(公告)号：EP2787355A2

公开(公告)日：2014-10-08

申请号：EP14163527.6

申请日：2014-04-04

Applicant: Tektronix, Inc.

Inventor： PICKERD, John

IPC: G01R13/02 ,  G01R27/30

CPC classification number: G01R13/02 ,  F02P17/00 ,  G01N27/42 ,  G01N31/02 ,  G01R13/0236 ,  G01R27/30 ,  G01R31/24 ,  G01R31/2635 ,  G01R31/44

Abstract: A method of preventing inter-system interference while acquiring waveforms in a test and measurement instrument with variation in a device under test system S-parameters. The method includes receiving a waveform from a device under test at the test and measurement instrument, digitizing the waveform, identifying portions of the digitized waveform with different S-parameter characteristics, separating the identified portions of the digitized waveform into different waveforms, and displaying the different waveforms to a user.

Abstract translation: 一种在测试系统S参数变化的测试和测量仪器中采集波形时防止系统间干扰的方法。 该方法包括在测试和测量仪器处接收来自被测设备的波形，对波形进行数字化，用不同的S参数特征识别数字化波形的部分，将所识别的部分数字化波形分离成不同的波形，并显示 不同的波形给用户。

公开(公告)号：EP3521836A3

公开(公告)日：2019-12-25

申请号：EP19155624.0

申请日：2019-02-05

Applicant: Tektronix, Inc.

Inventor： PICKERD, John ,  TAN, Kan ,  HOJABRI, Pirooz

IPC: G01R13/34 ,  G01R19/25 ,  G01R19/00 ,  H03H15/00

Abstract: A continuously or step variable passive noise filter for removing noise from a signal received from a DUT added by a test and measurement instrument channel. The noise filter may include, for example, a splitter splits a signal into at least a first split signal and a second split signal. A first path receives the first split signal and includes a variable attenuator and/or a variable delay line which may be set based on the channel response of the DUT which is connected. The variable attenuator and/or the variable delay line may be continuously or stepped variable, as will be discussed in more detail below. A second path is also included to receive the second split signal and a combiner combines a signal from the first path and a signal from the second path into a combined signal.

公开(公告)号：EP2787355B1

公开(公告)日：2018-07-25

申请号：EP14163527.6

申请日：2014-04-04

Applicant: Tektronix, Inc.

Inventor： PICKERD, John

IPC: F02P17/00 ,  G01R31/44 ,  G01N27/42 ,  G01N31/02 ,  G01R31/24 ,  G01R31/26 ,  G01R13/02 ,  G01R27/30

CPC classification number: G01R13/02 ,  F02P17/00 ,  G01N27/42 ,  G01N31/02 ,  G01R13/0236 ,  G01R27/30 ,  G01R31/24 ,  G01R31/2635 ,  G01R31/44

Abstract: A method of preventing inter-system interference while acquiring waveforms in a test and measurement instrument with variation in a device under test system S-parameters. The method includes receiving a waveform from a device under test at the test and measurement instrument, digitizing the waveform, identifying portions of the digitized waveform with different S-parameter characteristics, separating the identified portions of the digitized waveform into different waveforms, and displaying the different waveforms to a user.

公开(公告)号：EP3321702A1

公开(公告)日：2018-05-16

申请号：EP17199027.8

申请日：2017-10-27

Applicant: Tektronix, Inc.

Inventor： PICKERD, John ,  HOJABRI, Pirooz

IPC: G01R13/02

CPC classification number: H04B1/1018 ,  G01R13/0272 ,  H04B1/0057 ,  H04B1/0475 ,  H04B10/674

Abstract: Disclosed is a noise filter. The noise filter includes an input port to receive an analog signal. The noise filter further includes a multiplexer coupled to the input port. The multiplexer separates the analog signal into a plurality of frequency bands. The frequency bands include a high frequency band and a low frequency band. The noise filter also includes a low-band variable attenuator coupled to the multiplexer. The low-band variable attenuator adjustably attenuates the low frequency band relative to the high frequency band.

Abstract translation: 公开了一种噪声滤波器。 噪声滤波器包含一个输入端口来接收模拟信号。 噪声滤波器还包括耦合到输入端口的多路复用器。 多路复用器将模拟信号分成多个频带。 频带包括高频带和低频带。 噪声滤波器还包括一个耦合到多路复用器的低频可变衰减器。 低频带可变衰减器相对于高频带可调节地衰减低频带。

公开(公告)号：EP3104181A1

公开(公告)日：2016-12-14

申请号：EP16173999.0

申请日：2016-06-10

Applicant: Tektronix, Inc.

Inventor： PICKERD, John

IPC: G01R13/02

CPC classification number: H03M1/0626 ,  G01R13/0272 ,  H03K3/86 ,  H03M1/121

Abstract: Embodiments of the present invention provide improved techniques for sampling events in electrical test equipment such as real-time oscilloscopes. A circulating resampling digitizer uses a delay loop to repeatedly acquire replicas of an input event. The replicas are used to create a series of events which may be output or stored in memory. Signal reconstruction techniques such as interleaving and/or averaging may be applied to the series in order to construct a digital representation of the original input event. The resulting representation may have a higher sample rate, lower noise, and higher vertical resolution than each event in the series. The disclosed techniques use low cost components and can be added to existing instruments with little or no modification.

Abstract translation: 本发明的实施例提供了用于在诸如实时示波器的电气测试设备中采样事件的改进技术。 循环重采样数字转换器使用延迟循环重复获取输入事件的副本。 复制品用于创建一系列可能被输出或存储在内存中的事件。 诸如交织和/或平均的信号重构技术可以应用于该系列，以构建原始输入事件的数字表示。 所得到的表示可能具有比系列中的每个事件更高的采样率，更低的噪声和更高的垂直分辨率。 所公开的技术使用低成本组件，并且可以很少或没有修改地添加到现有的仪器。

公开(公告)号：EP3093996A1

公开(公告)日：2016-11-16

申请号：EP16167362.9

申请日：2016-04-27

Applicant: Tektronix, Inc.

Inventor： PICKERD, John

IPC: H03M1/66 ,  H03M1/08

CPC classification number: H03M1/662 ,  H03M1/08 ,  H03M1/1215

Abstract: A harmonic time interleave (HTI) system, including a reference signal, a first summing component to produce a summed reference signal, a de-interleave block to receive an input signal and output a plurality of de-interleaved input signals, a plurality of digital-to-analog converters, each digital-to-analog converter configured to receive a corresponding one of a plurality of de-interleaved input signals and to output a corresponding analog signal, a plurality of mixing components, each mixing component configured to receive the summed reference signal and an analog signal from a corresponding of the plurality of digital-to-analog converters, and to output a corresponding mixed signal, and a second summing component configured to receive the mixed signal from each of the corresponding mixing components and to produce a substantially full-bandwidth analog signal representation of the input signal.

Abstract translation: 谐波时间交织（HTI）系统中，包括参考信号，第一加法部件，以产生求和的参考信号，解交错块为接收输入信号，并输出解交织后的输入信号的复数，数字的多元性 -to模拟转换器，每一个数字 - 模拟配置为接收去交织的输入信号相应的模拟信号，并输出多个相应的一个，混合组分的多元转换器，每个混合组件被配置为接收所述相加 参考信号，并且从相应的数字 - 模拟转换器的多个模拟信号，并输出一个相应的混合信号，并且被配置为从每个相应的混合组分的接收混合信号，并产生一个第二求和部件 输入信号的基本上全带宽模拟信号表示。