【摘要】 介绍了基于计算机串行接口控制的可编程脉冲信号发生器 ,其脉冲信号的频率、宽度和幅度都可以根据需要调节。频率通过用可编程器件 EPLD控制 ,而脉冲信号的宽度和幅度通过多路模拟开关和数字电位器调节。计算机端用 Lab View5 .1软件编写仪器的面板 ,使虚拟仪器使用直观而方便更多还原

【Abstract】 This article introduces the design of programmable pulse generator that is based on a micro controller and controlled by RS232 interface of personal computer. The whole system has good stability. The pulse generator can produce TTL pulse and analog pulse. The pulse frequency can be selected by EPLD. The voltage amplitude and pulse width of analog pulse can be adjusted by analog switches and digitally controlled potentiometers. The software development tools of computer is National Instruments LabView5.1. The front panel of this virtual instrumentation is intuitive and easy to use. Parameters can be selected and changed conveniently by knob and slide.更多还原