摘要
为了弥补常规函数信号发生器无任意波输出的不足,以计算机声卡为输出设备,采用虚拟仪器技术,设计并实现了基于计算机的函数信号发生器。该函数信号发生器除了能产生常规的信号外,还能产生频率扫描和幅度扫描信号、用户自定义的谐波信号、用户输入函数表达式的信号,以及用户任意给定数据点的信号,实现了对现用常规台式信号源功能的扩展。
In order to compensate the defect of normal functional signal generators without arbitrary waveforms output, a virtual functional signal generator was designed and realized using sound card as output device. The virtual functional signal generator can generate not only standard waveforms, but also scan frequency waveforms, scan amplitude waveforms, and various user - defined waveforms, so the functions of normal signal source have been expanded.
出处
《电子测量技术》
2006年第3期53-54,58,共3页
Electronic Measurement Technology
基金
西北大学科研基金资助项目(OONW34)
关键词
虚拟仪器
函数信号发生器
声卡
virtual instrument
functional signal generator
sound card
