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公开(公告)号：US4885708A
公开(公告)日：1989-12-05
申请号：US271879
申请日：1988-11-16
CPC分类号： G01R23/16
摘要： A plurality of relatively prime excitation waveforms are generated and applied to an object to be measured. Data of the excitation waveforms and a response waveform from the object are extracted by one frame every n frames and subjected to Fourier transform, thereby computing an input auto spectral matrix and an input-output cross spectral matrix. A frequency response function of the object is calculated from averaged spectral matrices obtained by adding and averaging corresponding elements of the corresponding spectral matrices a predetermined number of times. Readout start addresses for multiple waveforms, each stored in one of a plurality of waveform memories and having continuity at both ends, are shifted relative to each other every n frames, thereby obtaining the plurality of relatively prime excitation waveforms.
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公开(公告)号：US4774454A
公开(公告)日：1988-09-27
申请号：US82231
申请日：1987-08-06
CPC分类号： G11B20/182 , G01R23/16 , G01R23/20
摘要： A method for testing and measuring distortion in electrical devices is provided. For signal processing and carrying devices, a signal generator generates a signal having known phase, amplitude and frequency, which is provided both to a device under test and a measuring unit. The measuring unit measures the amplitude, frequency and phase rotation of an output of the device under test and provides these measured values to a suppression signal generator. The suppression signal generator generates a suppression signal which is added to the output signal from the device under test for suppressing the fundamental wave of the output signal. This suppressed signal is then provided to the measuring unit, for comparison with the original output signal from the device under test for determining distortion factors. For testing signal reproducing devices, such as compact disc players and video tape recorders, such a device reproduces a series of signals, for which a series of corresponding suppression signals is generated by the suppression signal generator. Each suppression signal is added to the corresponding original signal and eliminates the fundamental wave in each signal in the series. The suppressed signals are then compared with the orginal corresponding signals for determining distortion factors of the signal reproducing device.
摘要翻译： 提供了一种用于测试和测量电气设备中的失真的方法。 对于信号处理和传送装置，信号发生器产生已知相位，振幅和频率的信号，其被提供给被测器件和测量单元。 测量单元测量被测器件的输出的幅度，频率和相位旋转，并将这些测量值提供给抑制信号发生器。 抑制信号发生器产生抑制信号，该抑制信号被加到来自被测器件的输出信号，以抑制输出信号的基波。 然后将该抑制信号提供给测量单元，以与来自被测器件的原始输出信号进行比较，以确定失真因子。 对于测试诸如光盘播放器和录像机的信号再现设备，这种设备再现一系列信号，由抑制信号发生器产生一系列对应的抑制信号。 每个抑制信号加到相应的原始信号中，消除了串联中每个信号中的基波。 然后将抑制的信号与用于确定信号再现装置的失真因子的原始对应信号进行比较。
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公开(公告)号：US06229316B1
公开(公告)日：2001-05-08
申请号：US08707032
申请日：1996-09-03
申请人： Takayoshi Fukui , Kouichi Yamashita , Takahiro Yamaguchi , Osamu Aoyama , Takashi Kosuge , Yoshiaki Miyamae , Toshiharu Kasahara , Hiroaki Takaoku
发明人： Takayoshi Fukui , Kouichi Yamashita , Takahiro Yamaguchi , Osamu Aoyama , Takashi Kosuge , Yoshiaki Miyamae , Toshiharu Kasahara , Hiroaki Takaoku
IPC分类号： G01R2316
摘要： A spectrum analyzer in which automatic setting of parameters such as band width is done by the analyzer without manual operator input and noise measurements are determined and displayed to the operator. This is accomplished by an input signal being supplied to a frequency mixer via an input variable attenuator. The frequency of the input signal is mixed with the frequency of a local signal from a frequency sweep generator. The mixed signal is then supplied to a band pass filter and the output of the filter is amplified by an amplifier. The frequency of the amplified output is mixed with the frequency of a local signal from a local oscillator by a frequency mixer. The intermediate frequency signal is taken out by a band pass filter and the output is detected by a detector. The detected output is converted into a digital signal by an A/D converter after passing through a low pass filter and the digital signal is stored in a buffer memory. A CPU sets an attenuation amount. The CPU also controls a frequency sweep generator by controlling a ramp voltage generator through a timing controller. The CPU sets a sweep frequency band, a band width RBW, a band width VBW, and a sampling period, as well as a display control of the data stored in the buffer memory on a display unit.
摘要翻译： 频谱分析仪，其中通过分析仪完成诸如带宽等参数的自动设置，无需手动操作员输入和噪声测量，并将其显示给操作者。 这通过经由输入可变衰减器被提供给混频器的输入信号来实现。 输入信号的频率与来自频率扫描发生器的本地信号的频率混合。 然后将混合信号提供给带通滤波器，并且滤波器的输出由放大器放大。 放大输出的频率通过混频器与来自本地振荡器的本地信号的频率混合。 中频信号由带通滤波器取出，输出由检测器检测。 在通过低通滤波器之后，A / D转换器将检测到的输出转换成数字信号，数字信号存储在缓冲存储器中。 CPU设置衰减量。 CPU还通过定时控制器控制斜坡电压发生器来控制频率扫描发生器。 CPU设置扫描频带，带宽RBW，带宽VBW和采样周期，以及在显示单元上存储在缓冲存储器中的数据的显示控制。
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公开(公告)号：US06191571B1
公开(公告)日：2001-02-20
申请号：US09248110
申请日：1999-02-11
申请人： Takayoshi Fukui , Kouichi Yamashita , Takahiro Yamaguchi , Osamu Aoyama , Takashi Kosuge , Yoshiaki Miyamae , Toshiharu Kasahara , Hiroaki Takaoku
发明人： Takayoshi Fukui , Kouichi Yamashita , Takahiro Yamaguchi , Osamu Aoyama , Takashi Kosuge , Yoshiaki Miyamae , Toshiharu Kasahara , Hiroaki Takaoku
IPC分类号： G01R1320
摘要： A measuring device and method use a spectrum analyzer. The spectrum analyzer comprises a display screen controlled by a processor on which a spectrum of an input signal is displayed in a frequency region on a half portion of the display screen and a noise level at a frequency associated with the input signal is displayed in a time region on another half portion of the display screen.
摘要翻译： 测量装置和方法使用频谱分析仪。 频谱分析仪包括由处理器控制的显示屏幕，在该处理器上，在显示屏幕的一半部分上的频率区域中显示输入信号的频谱，并且在一段时间内显示与输入信号相关联的频率处的噪声电平 区域在显示屏幕的另一半部分上。
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公开(公告)号：US4607216A
公开(公告)日：1986-08-19
申请号：US654132
申请日：1984-09-25
CPC分类号： G01R23/16
摘要： A frequency range of measurement is divided into a plurality of regions. For each region a test signal suitable for measurement of the region is generated independently, and the test signal is supplied to a device under test. The output of the device under test is converted by an AD converter into a digital signal, which is then subjected to fast Fourier transform. For each region the sensitivity of the AD converter is set for optimal conversion of the signal level at its input side by the converter, and then the fast Fourier transform is carried out. On the basis of the sensitivity set for one of the regions, the magnitude of the fast Fourier transform output in each of the other regions is corrected according to the sensitivities set for the other regions.
摘要翻译： 测量的频率范围被分成多个区域。 对于每个区域，独立地生成适合于该区域的测量的测试信号，并且将测试信号提供给被测设备。 被测器件的输出由AD转换器转换为数字信号，然后进行快速傅里叶变换。 对于每个区域，AD转换器的灵敏度被设置用于通过转换器在其输入侧的信号电平的最佳转换，然后执行快速傅里叶变换。 基于为一个区域设置的灵敏度，根据为其他区域设置的灵敏度来校正每个其他区域中的快速傅里叶变换输出的幅度。
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6.发明授权Computer system with a plurality of computer modules and baseboard management controllers, including a state machine that dynamically conducts a switching operation 失效具有多个计算机模块和基板管理控制器的计算机系统，包括动态地执行切换操作的状态机公开(公告)号：US08726049B2
公开(公告)日：2014-05-13
申请号：US13309703
申请日：2011-12-02
CPC分类号： G06F1/3203 , G06F1/30 , G06F11/2023 , G06F11/2035 , G06F11/3006 , G06F11/3055 , G06F11/3062
摘要： Without disposing any dedicated management module, it is possible to monitor sensors of shared sections shared among computer modules. A computer system includes a state machine for monitoring a power state of each computer module and a state of a baseboard management controller of the computer module, shared modules of shared sections shared among the computer modules, and switches corresponding to the shared modules for selecting one of the baseboard management controllers to establish connections between the baseboard management controllers and the shared modules. At occurrence of an abnormality in the power state or the baseboard management controller of any one of the computer modules, the state machine dynamically conducts a switching operation to designate one of the baseboard management controllers to monitor sensors of the shared modules.
摘要翻译： 不配置任何专用的管理模块，可以监视计算机模块之间共享的共享段的传感器。 计算机系统包括用于监视每个计算机模块的电力状态的状态机和计算机模块的基板管理控制器的状态，在计算机模块之间共享的共享部分的共享模块以及与共享模块相对应的开关，用于选择一个 的基板管理控制器，以在基板管理控制器和共享模块之间建立连接。 在任何一个计算机模块的电力状态或基板管理控制器发生异常的情况下，状态机动态地执行切换操作以指定一个基板管理控制器来监视共享模块的传感器。
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公开(公告)号：US4713788A
公开(公告)日：1987-12-15
申请号：US644961
申请日：1984-08-28
CPC分类号： G06F1/0335
摘要： A set value of a frequency setting register is accumulated upon each occurrence of a clock signal, and a waveform memory is read out by using the accumulated value as an address. In the waveform memory, amplitude data of one cycle of the waveform of a burst signal to be generated are stored at fixed phase intervals. The output read out of the waveform memory is converted into an analog signal. A wave-number counter counts the number of times the amplitude data of one cycle is read out of the waveform memory and, when having counted by a preset number of waves, yields a wave-number counting end signal. After the occurrence of the wave-number counting end signal, a phase counter counts clock signals, and, when the count value of the phase counter reaches a value corresponding to a preset end phase, the generation of the burst signal is stopped.
摘要翻译： 每次出现时钟信号时，频率设定寄存器的设定值被累加，并且通过使用累积值作为地址来读出波形存储器。 在波形存储器中，要产生的脉冲串信号的波形的一个周期的幅度数据以固定的相位间隔被存储。 从波形存储器读出的输出转换为模拟信号。 波数计数器对从波形存储器读出一个周期的幅度数据的次数进行计数，并且当以预定数量的波计数时，产生波数计数结束信号。 在发生波数计数结束信号之后，相位计数器对时钟信号进行计数，并且当相位计数器的计数值达到与预设结束相位对应的值时，脉冲串信号的产生被停止。
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公开(公告)号：US20120144223A1
公开(公告)日：2012-06-07
申请号：US13309703
申请日：2011-12-02
CPC分类号： G06F1/3203 , G06F1/30 , G06F11/2023 , G06F11/2035 , G06F11/3006 , G06F11/3055 , G06F11/3062
摘要： Without disposing any dedicated management module, it is possible to monitor sensors of shared sections shared among computer modules. A computer system includes a state machine for monitoring a power state of each computer module and a state of a baseboard management controller of the computer module, shared modules of shared sections shared among the computer modules, and switches corresponding to the shared modules for selecting one of the baseboard management controllers to establish connections between the baseboard management controllers and the shared modules. At occurrence of an abnormality in the power state or the baseboard management controller of any one of the computer modules, the state machine dynamically conducts a switching operation to designate one of the baseboard management controllers to monitor sensors of the shared modules.
摘要翻译： 不配置任何专用的管理模块，可以监视计算机模块之间共享的共享段的传感器。 计算机系统包括用于监视每个计算机模块的电力状态的状态机和计算机模块的基板管理控制器的状态，在计算机模块之间共享的共享部分的共享模块以及与共享模块相对应的开关，用于选择一个 的基板管理控制器，以在基板管理控制器和共享模块之间建立连接。 在任何一个计算机模块的电力状态或基板管理控制器发生异常的情况下，状态机动态地执行切换操作以指定一个基板管理控制器来监视共享模块的传感器。
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