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公开(公告)号：US09784765B2
公开(公告)日：2017-10-10
申请号：US12611302
申请日：2009-11-03
CPC分类号： G01R13/0254 , G01R13/029
摘要： A system and method are provided for graphically actuating a trigger in a test and measurement device. The method includes displaying a visual representation of signal properties for one or more time-varying signals. A graphical user input is received, in which a portion of the visual representation is designated. The method further includes configuring a trigger of the test and measurement device in response to the graphical user input, by setting a value for a trigger parameter of the trigger. The set value for the trigger parameters varies with and is dependent upon the particular portion of the visual representation that is designated by the graphical user input. The trigger is then employed in connection with subsequent monitoring of signals within the test and measurement device.
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22.发明授权公开(公告)号：US08890507B2
公开(公告)日：2014-11-18
申请号：US12783300
申请日：2010-05-19
CPC分类号： G01R31/2837 , G01R27/28
摘要： A method of measuring the phase transient response of a device under test automatically provides a flattened phase transient response without any user intervention. The method comprises the steps of calculating an instantaneous phase waveform based on an instantaneous voltage waveform that represents an output signal of the device under test as it steps from a first frequency to a second frequency, calculating an instantaneous frequency waveform based on the instantaneous phase waveform, automatically estimating the second frequency based on the instantaneous frequency waveform without any user intervention, and flattening the instantaneous phase waveform based on the estimate of the second frequency.
摘要翻译： 测量被测器件的相位瞬态响应的方法自动提供扁平相位瞬态响应，而无需用户干预。 该方法包括以下步骤：基于瞬时电压波形计算瞬时相位波形，瞬时电压波形表示从第一频率到第二频率的被测器件的输出信号，基于瞬时相位波形计算瞬时频率波形 在没有任何用户干预的情况下，基于瞬时频率波形自动估计第二频率，并且基于第二频率的估计来平坦化瞬时相位波形。
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公开(公告)号：US08880369B2
公开(公告)日：2014-11-04
申请号：US12573026
申请日：2009-10-02
CPC分类号： G01R13/0254 , G01R13/0263 , G01R23/16 , G01V3/00
摘要： A method is disclosed for triggering upon signal events occurring in frequency domain signals. The method includes repeatedly sampling a time-varying signal and generating a plurality of digital frequency domain spectrums based on the samples of the time-varying signal. A frequency domain bitmap for the time-varying signal is repeatedly updated via application of the digital frequency domain spectrums. The method further includes selecting a portion of the frequency domain bitmap, determining a signal occupancy in the selected portion, and triggering a capture of the time-varying signal based on and in response to the occupancy determination for the selected portion of the bitmap.
摘要翻译： 公开了一种用于在频域信号中发生信号事件时进行触发的方法。 该方法包括基于时变信号的样本重复采样时变信号并产生多个数字频域频谱。 通过应用数字频域频谱重新更新时变信号的频域位图。 该方法还包括选择频域位图的一部分，确定所选部分中的信号占有率，以及基于并响应于位图的选定部分的占用确定来触发时变信号的捕获。
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公开(公告)号：US08452559B2
公开(公告)日：2013-05-28
申请号：US12778730
申请日：2010-05-12
IPC分类号： G01R13/02
CPC分类号： G01R23/18 , G01R13/0254
摘要： A “density trace” according to an embodiment of the present invention is formed by measuring the density of each column of a frequency domain bitmap above a user-specified “amplitude threshold.” The density of each column equals the sum of the densities of all of the pixels in the column that are above the amplitude threshold divided by the sum of the densities of all of the pixels in the column. A density trace provides a convenient way to define and represent the occupancy for a large number of columns, and also allows density data to be quickly transmitted from one instrument or computer to another. In some embodiments, a density trace is incorporated into a trigger detector of a test and measurement instrument and used to generate a trigger signal. The trigger detector compares the density trace to a user-specified “density threshold” and generates the trigger signal when the value of any point of the density trace violates the density threshold.
摘要翻译： 根据本发明的实施例的“密度迹线”是通过测量频域位图的每列的密度高于用户指定的“振幅阈值”来形成的。 每列的密度等于列中高于振幅阈值的所有像素的密度之和除以列中所有像素的密度之和。 密度跟踪提供了一种方便的方法来定义和表示大量列的占用，并且还可以将密度数据从一个仪器或计算机快速传输到另一个。 在一些实施例中，将密度迹线并入到测试和测量仪器的触发检测器中，并用于产生触发信号。 触发检测器将密度跟踪与用户指定的“密度阈值”进行比较，并且当密度跟踪的任何点的值超过密度阈值时，触发信号产生触发信号。
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公开(公告)号：US20120041701A1
公开(公告)日：2012-02-16
申请号：US12856472
申请日：2010-08-13
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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26.发明申请公开(公告)号：US20110285381A1
公开(公告)日：2011-11-24
申请号：US12783300
申请日：2010-05-19
IPC分类号： G01R23/00
CPC分类号： G01R31/2837 , G01R27/28
摘要： A method of measuring the phase transient response of a device under test automatically provides a flattened phase transient response without any user intervention. The method comprises the steps of calculating an instantaneous phase waveform based on an instantaneous voltage waveform that represents an output signal of the device under test as it steps from a first frequency to a second frequency, calculating an instantaneous frequency waveform based on the instantaneous phase waveform, automatically estimating the second frequency based on the instantaneous frequency waveform without any user intervention, and flattening the instantaneous phase waveform based on the estimate of the second frequency.
摘要翻译： 测量被测器件的相位瞬态响应的方法自动提供扁平相位瞬态响应，而无需用户干预。 该方法包括以下步骤：基于瞬时电压波形计算瞬时相位波形，瞬时电压波形表示从第一频率到第二频率的被测器件的输出信号，基于瞬时相位波形计算瞬时频率波形 在没有任何用户干预的情况下，基于瞬时频率波形自动估计第二频率，并且基于第二频率的估计来平坦化瞬时相位波形。
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公开(公告)号：US20080270440A1
公开(公告)日：2008-10-30
申请号：US12092251
申请日：2006-11-01
申请人： Yi He , Kathryn A. Engholm
发明人： Yi He , Kathryn A. Engholm
IPC分类号： G06F17/30
CPC分类号： G10L19/0212 , G01R23/16
摘要： A data compression method for producing spectrum traces may divide signal data into multiple transform frames, produce a spectrum trace for each transform frame using a time domain to frequency domain transform, and combine the multiple frames from the analysis window into a single spectrum trace according to the spectrum amplitude of corresponding points in each frame. A device comprising a port to receive a signal or data set; and circuitry in communication with the port to segment the data record into frames, multiply each frame by a windowing function, transform each frame from a time domain representation to a frequency domain representation, and compress the frames using a detection function to create a single spectrum trace. This data compression provides flexibility to allow users to select analysis length, resolution bandwidth (RBW) and number of trace points independently, eliminating the coupling often found in traditional approaches.
摘要翻译： 用于产生频谱轨迹的数据压缩方法可以将信号数据划分为多个变换帧，使用时域到频域变换产生每个变换帧的频谱轨迹，并根据分析窗口将多个帧从分析窗口组合成单个频谱轨迹 每帧中对应点的频谱幅度。 一种设备，包括用于接收信号或数据集的端口; 以及与端口通信的电路，用于将数据记录分割成帧，将每帧乘以加窗函数，将每个帧从时域表示转换为频域表示，并使用检测功能压缩帧以创建单个频谱 跟踪。 该数据压缩提供了灵活性，允许用户独立地选择分析长度，分辨率带宽（RBW）和跟踪点数量，消除了传统方法中常见的耦合。
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公开(公告)号：US07130328B2
公开(公告)日：2006-10-31
申请号：US10222092
申请日：2002-08-15
CPC分类号： H04J13/004 , H04B17/23 , H04B17/26 , H04B17/327
摘要： A time history display of orthogonal code power levels by spreading factor is generated by displaying each data record of code domain power as a line, with each point in the line representing a different code index and the color or brightness of each data point representing the associated base code power level. With the data records displayed as contiguous lines, as each new data record is acquired it is added as a new line of the display while the line representing the oldest data record is deleted from the display. For communications standards where the code spreading factor varies, both bit-reversed and Walsh code graphs are displayed to show the grouping of the sub-codes that make up a base code. In this way the time history display indicates timing and trend information to a user.
摘要翻译： 通过显示代码域功率的每个数据记录作为一行，产生通过扩展因子的正交码功率电平的时间历史显示，其中行中的每个点表示不同的码索引，并且每个数据点的颜色或亮度表示相关联的 基本代码功率级别。 随着数据记录显示为连续的行，当获取每个新的数据记录时，它被添加为显示的新行，而从显示中删除表示最早的数据记录的行。 对于代码扩展因子变化的通信标准，显示位反转和沃尔什码图，以显示构成基础代码的子代码的分组。 以这种方式，时间历史显示向用户显示定时和趋势信息。
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公开(公告)号：US06904269B1
公开(公告)日：2005-06-07
申请号：US09587491
申请日：2000-06-02
CPC分类号： H04L27/0012
摘要： A method of identifying a signal type uses parameters of the signal as a basis for automatic identification. A signal of interest is selected from a display of a spectral waveform for a specified frequency. An occupied bandwidth for the signal of interest is estimated and, if the occupied bandwidth is common to more than one known signal type, a complementary cumulative distribution function of peak power for the signal of interest is estimated. The signal type may be identified as a function of these parameters. Additionally the frequency of the signal of interest may be compared with a database of spectral assignments for known signal types to provide further information about the signal of interest.
摘要翻译： 识别信号类型的方法使用信号的参数作为自动识别的基础。 从特定频率的频谱波形的显示中选择感兴趣的信号。 估计感兴趣信号的占用带宽，并且如果占用带宽与多于一种已知信号类型相同，则估计用于感兴趣信号的峰值功率的互补累积分布函数。 信号类型可以被识别为这些参数的函数。 另外，感兴趣的信号的频率可以与已知信号类型的频谱分配的数据库进行比较，以提供关于感兴趣的信号的进一步的信息。
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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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