动态信号分析仪（DSA）的信噪比（SNR）指标

硬件: Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PCI-4452, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PCI-4551, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PCI-4474, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>NI 4472 for IEEE 1394, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PCI-4472, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PXI-4472, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PCI-4451, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PXI-4462, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PCI-4454, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PXI-4461, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PXI-4472B, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PCI-4471, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PXI-4471, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PXI-4474, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PCI-4461, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PCI-4462

问题: 我的DSA设备的模拟输入端口的信噪比指标是多少？

解答: 447x和446x的产品指标中并没有明确给出信噪比指标，但是给出了总谐波失真（THD）和总谐波失真+噪声（THD+N）的指标。信噪比、总谐波失真和总谐波失真+噪声这三者只要知道其中两个就能算出第三个。请参考以下由Analog Devices给出的链接来计算这些值。请注意：THD+N和SINAD是一样的，您可以在产品指标中用THD+N取代SINAD。

相关链接: Analog Devices THD/ SNR/ SINAD Calculator
Product Manuals: NI 447X Specifications
Product Manuals: NI 446X Specifications


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报告日期: 09/27/2006
最近更新: 10/09/2006
文档编号: 3ZD9QUNY