基于虚拟仪器技术的音频扫频信号测量仪

Audio Sweep Signal Tester Based on Virtual Instrument Technology

针对目前音频扫频信号的测量的局限性,利用NI公司的PXI-5124数据采集卡,在LabVIEW2012开发环境下,开发了基于虚拟仪器技术的音频扫频信号测量仪,实现了音频扫频信号的直接测量。介绍了开发过程,并给出了基本程序,通过系统测试证实该仪器功能正常,测量结果准确,为音频扫频信号发生器的计量校准提供了新思路。

For the measurement of the current limitations of the audio sweep signal, using NI PXI -5124 data acquisition card, In LabVIEW2012 development environment, an audio sweep signal tester is developed based on virtual instrument tech- nology, a direct measurement of the audio sweep signal is achieved. Development process is introduced and the basic proce- dure is given. It is confirm that the instrument is functioning properly ,the measurement results are accurated through the sys- tem test. A new idea for the measurement and calibration of audio sweep signal generator is provided.