Spectrum analyzer having functions for simultaneously executing plural kinds of detections and displaying resultants thereof
    41.
    发明公开
    Spectrum analyzer having functions for simultaneously executing plural kinds of detections and displaying resultants thereof 失效
    装置与用于若干种检测和显示结果的同时执行其功能的光谱分析。

    公开(公告)号:EP0379050A1

    公开(公告)日:1990-07-25

    申请号:EP90100446.5

    申请日:1990-01-10

    IPC分类号: G01R23/18 G01R23/16

    CPC分类号: G01R23/18 G01R23/16

    摘要: A frequency conversion section (2, 3) sweeps an object signal within a desired measurement frequency range, thereby frequency-converting the object signal. A peak detector (6) detects a peak of an output from the frequency converting section (2, 3). A measurement detector (7) measures and detects the output from the frequency conversion section (2, 3) simultaneously with the peak detection by the peak detector. The measure­ment detector (7) has an output characteristic lower than an output characteristic of the peak detector. A display (12) displays an output from the peak detector (6) and an output from the measurement detector (7) on a single display screen, in synchronism with the sweeping by the frequency conversion section (2, 3), with these outputs of the peak detector (6) and the measurement detector (7) being plotted along an axis representative of frequencies. In another mode of the invention, an alarm device indicates the fact that an output from the peak detector has exceeded a predeter­mined allowable limit level.

    摘要翻译: 频率转换部(2,3)扫过到期望的测量频率范围内的对象的信号,从而频率转换该对象信号。 峰值检测器(6)从频率转换部检测的输出的峰值(2,3)。 的测量检测器(7)和措施检测从频率转换部的输出端(2,3)同时,随着峰值检测由峰值检测器。 测量检测器(7)具有对输出特性比在峰值检测器的输出特性低。 的显示器(12)显示在从峰值检测器(6)输出并从单个显示屏幕上的测量检测器(7)的输出,同步地扫掠通过频率转换部(2,3),与合成输出 峰值检测器(6)和所述测量检测器(7)的有代表性的频率轴被画出沿。 在本发明的另一个模式中,向报警装置指示在从所述峰值检测器输出的factthat已经超过预定允许限度的水平。

    Signal analyzer having partially scrolling function for display screen
    42.
    发明公开
    Signal analyzer having partially scrolling function for display screen 失效
    Signalanalysator mit teilweiser RollfunktionfürBildschirmdarstellung。

    公开(公告)号:EP0284821A1

    公开(公告)日:1988-10-05

    申请号:EP88103406.0

    申请日:1988-03-04

    IPC分类号: G01R23/18 G01R23/16

    CPC分类号: G01R23/18 G01R23/173

    摘要: An input processing section (1 - 7) outputs a digital signal corresponding to a frequency sweep range of an input signal. A memory (8) stores the digital signal. A display (9) displays the digital signal stored in the memory (8) as an image which is developed along a frequency axis. A scroll command section (20) provides a command for shifting the image. A controller (10) supplies, to the input processing section (1 - 7), a first control signal for causing the input processing section (1 - 7) to process the input signal in a first frequency sweep range and supplies, to the memory (8), a second control signal for causing the memory (8) to store the digital signal, prior to reception of the com­mand. When the command is received, the controller (10) supplies, to the input processing section (1 - 7), a third control signal for causing the input processing section (1 - 7) to process the input signal in a second frequency sweep range in accordance with a content of the command and supplies to the memory (8), a fourth control signal for causing the memory (8) to store the digital signal. The display (9) displays an image of the second frequency sweep range to be continuous with the image of the first frequency sweep range which is shifted in accordance with the command.

    摘要翻译: 输入处理部(1-7)输出与输入信号的频率扫描范围对应的数字信号。 存储器(8)存储数字信号。 显示器(9)将存储在存储器(8)中的数字信号显示为沿着频率轴显影的图像。 滚动命令部分(20)提供用于移动图像的命令。 控制器(10)向输入处理部分(1-7)提供用于使输入处理部分(1-7)在第一频率扫描范围内处理输入信号的第一控制信号,并将其提供给存储器 (8),用于在接收到命令之前使存储器(8)存储数字信号的第二控制信号。 当接收到命令时,控制器(10)向输入处理部分(1-7)提供第三控制信号,以使输入处理部分(1-7)在第二频率扫描范围内处理输入信号 根据命令的内容并将其提供给存储器(8),用于使存储器(8)存储数字信号的第四控制信号。 显示器(9)显示与根据该命令偏移的第一频率扫描范围的图像连续的第二频率扫描范围的图像。

    Frequency mask trigger with non uniform bandwidth segments

    公开(公告)号:EP2605025B1

    公开(公告)日:2018-11-14

    申请号:EP12197145.1

    申请日:2012-12-14

    申请人: Tektronix, Inc.

    摘要: Disclosed is a test and measurement instrument (200) having a multiple variable bandwidth frequency mask. The instrument includes an input processor (205, 210, 220) for receiving an input signal and producing a digital signal, as well as a trigger signal generator (260, 262) for generating a trigger signal on the occurrence of a trigger event. A time to frequency converter (250, 252) converts a frame of digital data from the digital signal into a frequency spectrum having at least two frequency bins of dissimilar frequency widths. Each frequency bin has a power amplitude value. The trigger signal is generated when the power amplitude value of any of the at least two frequency bins violates an associated reference power level. In some cases the output may be shown as a density trace, and the trigger signal generated when any point of the density trace violates an associated density threshold.

    SIGNAL ANALYZER AND ITS DATA GENERATION METHOD
    47.
    发明公开
    SIGNAL ANALYZER AND ITS DATA GENERATION METHOD 审中-公开
    信号与数据的生成及其方法

    公开(公告)号:EP2096451A4

    公开(公告)日:2017-04-19

    申请号:EP07832405

    申请日:2007-11-22

    发明人: NARA AKIRA

    摘要: To produce data of an initial analysis range and a range zooming a part of it while updating them in parallel. A first frequency analysis range and a second frequency analysis range that is narrower than the first one are set with an operation panel 34, etc. A first signal path 171 produces first time domain data of a frequency converted signal under test according to a first data production rate that is set depending on the first frequency analysis range. A second signal path 172 produces second time domain data of frequency converted signal under test according to a second data production rate that is set depending on the second frequency analysis range and is slower than the first data production rate. A CPU receives the first and second time domain data in parallel and produces first and second frequency domain data by fast Fourier transform wherein frequency shift amounts in the frequency conversions in the first and second signal path are different depending on a difference between the center frequencies of the first and second frequency analysis ranges.

    PROCEDE ET DISPOSITIF D'IDENTIFICATION D'UN MATERIAU PAR ANALYSE SPECTRALE DE RAYONNEMENTS ELECTROMAGNETIQUES TRAVERSANT CE MATERIAU
    48.
    发明公开
    PROCEDE ET DISPOSITIF D'IDENTIFICATION D'UN MATERIAU PAR ANALYSE SPECTRALE DE RAYONNEMENTS ELECTROMAGNETIQUES TRAVERSANT CE MATERIAU 审中-公开
    方法和设备来识别材料进行频谱电磁辐射通道的看完这些资料

    公开(公告)号:EP2726815A1

    公开(公告)日:2014-05-07

    申请号:EP12743484.3

    申请日:2012-06-29

    IPC分类号: G01B15/02 G01V5/00 G01N23/087

    摘要: The invention relates to a method for identifying a material, which comprises the following steps: measuring (200) a spectrum of electromagnetic radiation transmitted through the material to be identified; determining (202, 204) at least one energy band, referred to as a measurement band, and spectral coefficients of a comparison function in said measurement band, from the measured spectrum; estimating (PH1, PH2), using predetermined spectral coefficients, the nature and/or thickness of the material to be identified on the basis of a set of reference spectral parameters relating to reference thicknesses and/or materials and defined within reference bands. The estimation comprises at least the two following steps: previously selecting (208i, 208p) a plurality of reference thicknesses and/or materials, referred to as possible candidates, from a comparison of the spectral coefficients determined with at least one portion of the reference spectral parameters; and estimating (222) the nature and/or thickness of the material to be identified, from a comparison of the spectral coefficients determined with the spectral parameters of at least one portion of the possible candidates, in at least one energy band that is common to the reference bands of said at least one portion of the possible candidates and the measurement band.

    Method and apparatus for generating a gated density bitmap
    50.
    发明公开
    Method and apparatus for generating a gated density bitmap 审中-公开
    Verfahren und Vorrichtung zur Erzeugung eines periodisch getriggerten Dichte-Bitmaps

    公开(公告)号:EP2402767A3

    公开(公告)日:2013-06-26

    申请号:EP11165724.3

    申请日:2011-05-11

    申请人: Tektronix, Inc.

    IPC分类号: G01R13/02 G01R23/16 G01R23/18

    CPC分类号: G01R13/0254 G01R23/18

    摘要: A test and measurement instrument converts digital data that represents an input signal into a series of frequency spectra and accumulates frequency spectra into a bitmap database in response to a gating signal. In some embodiments, the gating signal is generated when the instantaneous power of the input signal violates a power threshold.

    摘要翻译: 测试和测量仪器将表示输入信号的数字数据转换为一系列频谱,并响应门控信号将频谱累积到位图数据库中。 在一些实施例中,当输入信号的瞬时功率违反功率阈值时,产生门控信号。