基于TLC2543和VB的低频虚拟示波器  

The low frequency virtual oscilloscope based on TLC2543 and VB

作　　者：马胜前[1] 杨慧娟[1] 刘军虎[1] 

机构地区：[1]西北师范大学物理与电子工程学院,甘肃兰州730070

出　　处：《西北师范大学学报（自然科学版）》2007年第2期41-43,共3页Journal of Northwest Normal University(Natural Science)

摘　　要：介绍了一种以TLC2543和Visual Basic实现的低频虚拟示波器.将TLC2543所采集的数据通过计算机的并行端口送到主机,再由Visual Basic编程语言设计的示波器操作面板将模拟信号转换成可观察的图形,实现与模拟示波器相类似的功能,即实现数据实时采集与显示、波形的幅度调节、频率调节、水平移动和垂直移动等功能.A low frequency virtual oscilloscope is introduced, which can be realized by TLC2543 and Visual Basic. The data are sampled by TLC2543 and sent to the personal computer through line print terminal（LPT）, then the analog signal is changed into the graph that can be observed through the oscilloscope operation panel, which is designed by Visual Basic, in order to realize the similar function as an analog oscilloscope, such as sampling and showing the data with real time, regulating the amplitude and the frequency, and moving the waveform horizontally and vertically and so on.

关 键 词：TLC2543 打印口 VB 虚拟示波器 

分 类 号：TM935.3[电气工程—电力电子与电力传动]