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公开(公告)号：US08649989B2
公开(公告)日：2014-02-11
申请号：US12856472
申请日：2010-08-13
IPC分类号： G01R23/16
CPC分类号： G01R13/0254 , G01R23/16
摘要： Embodiments of this invention provide enhanced triggering capabilities such as frequency and phase triggering in a test and measurement instrument, such as a Real-Time Spectrum Analyzer (RTSA) or oscilloscope. A test and measurement instrument can include input terminals to receive RF signals, an ADC to digitize the RF signals, a digital downconverter to produce I and Q baseband component information, and a power detector to determine a power level using the I and Q information. A comparator compares the power level received from the power detector with a user-definable power threshold, and produces a logic signal for enabling one or more phase or frequency demodulators. The one or more demodulators produce IQ-based time-domain traces derived from the I and Q component information when the power level determined by the power detector exceeds the power threshold. Trigger circuitry is configured to trigger on an event responsive to a delayed trigger enable signal.
摘要翻译： 本发明的实施例提供了诸如实时频谱分析仪（RTSA）或示波器之类的测试和测量仪器中的增强的触发能力，例如频率和相位触发。 测试和测量仪器可以包括用于接收RF信号的输入端子，用于数字化RF信号的ADC，用于产生I和Q基带分量信息的数字下变频器，以及使用I和Q信息来确定功率电平的功率检测器。 比较器将从功率检测器接收的功率电平与用户可定义的功率阈值进行比较，并产生用于启用一个或多个相位或频率解调器的逻辑信号。 当由功率检测器确定的功率电平超过功率阈值时，一个或多个解调器产生从I和Q分量信息导出的基于IQ的时域轨迹。 触发电路被配置为在响应于延迟的触发使能信号的事件上触发。
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公开(公告)号：US08675719B2
公开(公告)日：2014-03-18
申请号：US12892758
申请日：2010-09-28
IPC分类号： H04B17/00
CPC分类号： H04B17/16 , G01R13/0236 , G01R13/0272 , G01R23/16
摘要： A test and measurement instrument including a time domain channel configured to process a first input signal for analysis in a time domain; a frequency domain channel configured to process a second input signal for analysis in a frequency domain; and an acquisition system coupled to the time domain channel and the frequency domain channel. The acquisition system is configured to acquire data from the time domain channel and the frequency domain channel. Time domain and frequency domain data can be time aligned.
摘要翻译： 一种测试和测量仪器，包括被配置为处理第一输入信号以在时域中进行分析的时域通道; 频域信道，被配置为处理第二输入信号以在频域中进行分析; 以及耦合到时域信道和频域信道的采集系统。 采集系统被配置为从时域信道和频域信道获取数据。 时域和频域数据可以进行时间对齐。
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3.发明授权公开(公告)号：US08615382B2
公开(公告)日：2013-12-24
申请号：US13015084
申请日：2011-01-27
IPC分类号： H03F1/26
CPC分类号： G01R13/029 , G01R13/0236
摘要： A test and measurement instrument and method for generating IQ-based time domain waveform information and presenting the IQ-based time domain waveform information together with other time domain waveform on a common axis through a user interface. The test and measurement instrument can include, for example, one or more input terminals to receive an electrical signal under test, an analog-to-digital converter (ADC) to digitize the signal under test, a digital downconverter to produce I (in-phase) and Q (quadrature) baseband component information from the digitized signal, a memory configured to store the IQ baseband component information, a user interface, and a controller. The controller can be configured to generate an IQ-based time domain waveform using the IQ baseband component information, and present the IQ-based time domain waveform and a second time domain waveform on a common axis through the user interface.
摘要翻译： 一种用于生成基于IQ的时域波形信息并通过用户界面在公共轴上呈现基于IQ的时域波形信息和其他时域波形的测试和测量仪器和方法。 测试和测量仪器可以包括例如一个或多个输入端子来接收待测电信号，模拟 - 数字转换器（ADC）将被测信号数字化，数字下变频器产生I（ - 相位）和来自数字化信号的Q（正交）基带分量信息，被配置为存储IQ基带分量信息的存储器，用户接口和控制器。 控制器可以配置为使用IQ基带组件信息生成基于IQ的时域波形，并通过用户界面在公共轴上显示基于IQ的时域波形和第二时域波形。
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公开(公告)号：US09157943B2
公开(公告)日：2015-10-13
申请号：US12856467
申请日：2010-08-13
IPC分类号： G01R23/00 , G01R23/16 , G01R23/163
CPC分类号： G01R23/16 , G01R23/163
摘要： A test and measurement instrument including a plurality of input ports; an acquisition system coupled to the input ports and configured to acquire frequency domain data from the input ports; a user interface configured to present frequency domain controls for at least two of the input ports; and a controller configured to adjust frequency domain acquisition parameters of the acquisition system in response to the frequency domain controls such that frequency domain acquisition parameters associated with a first input port can be different from frequency domain acquisition parameters associated with a second input port.
摘要翻译： 一种包括多个输入端口的测试和测量仪器; 所述采集系统耦合到所述输入端口并被配置为从所述输入端口获取频域数据; 用户界面，被配置为对至少两个所述输入端口进行频域控制; 以及控制器，被配置为响应于所述频域控制来调整所述采集系统的频域获取参数，使得与第一输入端口相关联的频域获取参数可以与与第二输入端口相关联的频域获取参数不同。
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公开(公告)号：US20140002508A1
公开(公告)日：2014-01-02
申请号：US13538978
申请日：2012-06-29
IPC分类号： G09G5/10
CPC分类号： G09G5/10 , G09G5/00 , G09G2320/0271
摘要： Disclosed is a test and measurement instrument that includes a signal input structured to receive a modulated radio frequency (RF) signal under test and a demodulator structured to extract a digital signal from the received modulated RF signal. The extracted digital signal has a measurable parameter. The instrument also includes a display controller structured to display the extracted demodulated signal at one of at least two different intensities based on the measured parameter of the digital signal. In other embodiments the signal need not be an RF signal. Methods of operation are also described.
摘要翻译： 公开了一种测试和测量仪器，其包括被构造为接收被测试的调制射频（RF）信号的信号输入和被构造成从接收的调制RF信号中提取数字信号的解调器。 提取的数字信号具有可测量的参数。 仪器还包括显示控制器，其被构造为基于所测量的数字信号的参数，以至少两个不同的强度之一显示所提取的解调信号。 在其它实施例中，信号不需要是RF信号。 还描述了操作方法。
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6.发明授权Signal acquisition system having reduced probe loading of a device under test 有权信号采集系统具有减少被测设备的探头负载公开(公告)号：US08436624B2
公开(公告)日：2013-05-07
申请号：US12846721
申请日：2010-07-29
申请人： Josiah A. Bartlett , Ira G. Pollock , Daniel G. Knierim , Lester L. Larson , Scott R. Jansen , Kenneth P. Dobyns , Michael Duane Stevens
发明人： Josiah A. Bartlett , Ira G. Pollock , Daniel G. Knierim , Lester L. Larson , Scott R. Jansen , Kenneth P. Dobyns , Michael Duane Stevens
IPC分类号： G01R35/00
CPC分类号： G01R35/005 , G01R1/06766
摘要： A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable. The resistive center conductor signal cable of the signal acquisition probe is coupled to a compensation system in a signal processing instrument via an input node and input circuitry in the signal processing instrument. The signal acquisition probe and the signal processing instrument have mismatched time constants at the input node with the compensation system providing pole-zero pairs for maintaining flatness over the signal acquisition system frequency bandwidth.
摘要翻译： 信号采集系统具有信号采集探针，其具有耦合到电阻中心导体信号电缆的探针尖端电路。 信号采集探头的电阻中心导体信号电缆通过输入节点和信号处理仪器中的输入电路耦合到信号处理仪器中的补偿系统。 信号采集探头和信号处理仪器在输入节点处具有不匹配的时间常数，补偿系统提供极零对，以保持信号采集系统频率带宽的平坦度。
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公开(公告)号：US08278940B2
公开(公告)日：2012-10-02
申请号：US12846742
申请日：2010-07-29
申请人： Josiah A. Bartlett , Ira G. Pollock , Daniel G. Knierim , Lester L. Larson , Scott R. Jansen , Kenneth P. Dobyns
发明人： Josiah A. Bartlett , Ira G. Pollock , Daniel G. Knierim , Lester L. Larson , Scott R. Jansen , Kenneth P. Dobyns
IPC分类号： G01R35/00
CPC分类号： G01R1/06766 , G01R1/06772
摘要： A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable. The resistive center conductor signal cable is coupled to a compensation system in a signal processing instrument via an input node and input circuitry in the signal processing instrument. The signal acquisition probe and the signal processing instrument have mismatched time constants at the input node with the compensation system having an input amplifier with feedback loop circuitry and a compensation digital filter providing pole-zero pairs for maintaining flatness over the signal acquisition system frequency bandwidth.
摘要翻译： 信号采集系统具有信号采集探针，其具有耦合到电阻中心导体信号电缆的探针尖端电路。 电阻中心导体信号电缆通过信号处理仪器中的输入节点和输入电路耦合到信号处理仪器中的补偿系统。 信号采集探头和信号处理仪器在输入节点处具有不匹配的时间常数，其中补偿系统具有带反馈回路电路的输入放大器和提供极点对的补偿数字滤波器，用于在信号采集系统频率带宽上保持平坦度。
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8.发明申请公开(公告)号：US20110074390A1
公开(公告)日：2011-03-31
申请号：US12846721
申请日：2010-07-29
申请人： Josiah A. Bartlett , Ira G. Pollock , Daniel G. Knierim , Lester L. Larson , Scott R. Jansen , Kenneth P. Dobyns , Michael Duane Stevens
发明人： Josiah A. Bartlett , Ira G. Pollock , Daniel G. Knierim , Lester L. Larson , Scott R. Jansen , Kenneth P. Dobyns , Michael Duane Stevens
CPC分类号： G01R35/005 , G01R1/06766
摘要： A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable. The resistive center conductor signal cable of the signal acquisition probe is coupled to a compensation system in a signal processing instrument via an input node and input circuitry in the signal processing instrument. The signal acquisition probe and the signal processing instrument have mismatched time constants at the input node with the compensation system providing pole-zero pairs for maintaining flatness over the signal acquisition system frequency bandwidth.
摘要翻译： 信号采集系统具有信号采集探针，其具有耦合到电阻中心导体信号电缆的探针尖端电路。 信号采集探头的电阻中心导体信号电缆通过输入节点和信号处理仪器中的输入电路耦合到信号处理仪器中的补偿系统。 信号采集探头和信号处理仪器在输入节点处具有不匹配的时间常数，补偿系统提供极零对，以保持信号采集系统频率带宽的平坦度。
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公开(公告)号：US07855547B2
公开(公告)日：2010-12-21
申请号：US12104563
申请日：2008-04-17
IPC分类号： G01R13/20
CPC分类号： G01R13/0254
摘要： A method of drawing a waveform image in a no dead time acquisition system, where consecutive drawing frames overlap, uses a master/slave relationship between two fast rasterizers. The master rasterizer draws a first display frame in response to a first trigger event in a trigger signal derived from an input signal. The slave rasterizer draws a second display frame in response to a subsequent trigger event in the trigger signal. The portion of the second display frame that duplicates data contained in the first display frame is either (a) suppressed when the first and second display frames are combined to form the waveform image or (b) displayed in a different shade/color. Alternatively the first display frame may be compressed by 50% to form a first portion of the waveform image and the non-duplicative portion of the second display frame is compressed by 50% to form a second portion of the waveform image, the first and second portions being drawn contiguously when the first and second display frames are combined to form the waveform image.
摘要翻译： 在连续绘制帧重叠的无死区时间采集系统中绘制波形图像的方法使用两个快速光栅化器之间的主/从关系。 主光栅化器响应于从输入信号导出的触发信号中的第一触发事件来绘制第一显示帧。 从光栅化器响应于触发信号中的后续触发事件而绘制第二显示帧。 复制第一显示帧中包含的数据的第二显示帧的部分是（a）当第一和第二显示帧被组合以形成波形图像时抑制（a），或（b）以不同的阴影/颜色显示。 或者，第一显示帧可以被压缩50％以形成波形图像的第一部分，并且第二显示帧的非重复部分被压缩50％以形成波形图像的第二部分，第一和第二 当第一和第二显示帧被组合以形成波形图像时，被连续地绘制的部分。
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公开(公告)号：US07545377B2
公开(公告)日：2009-06-09
申请号：US11442502
申请日：2006-05-25
申请人： Kenneth P. Dobyns , Paul M. Gerlach
发明人： Kenneth P. Dobyns , Paul M. Gerlach
IPC分类号： G06T11/20
CPC分类号： G01R13/02
摘要： An apparatus for displaying a digitized waveform includes an overview display configured to display a digitized waveform scrolling across the overview display, a zoom display configured to display a portion of the digitized waveform, and a control unit configured to cause the portion of the digitized waveform displayed in the zoom display to track the displayed portion of the digitized waveform in response to a track signal.
摘要翻译： 用于显示数字化波形的装置包括：概略显示，被配置为显示横跨概览显示滚动的数字化波形;缩放显示器，被配置为显示所述数字化波形的一部分;以及控制单元，被配置为使所述数字化波形的所述部分显示 在变焦显示中，以响应于轨道信号跟踪数字化波形的显示部分。
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