一种频率精密可调的多波形信号发生器

针对目前信号发生器频率调整困难的缺点，提出了一种利用系数乘法器实现频率 精密可调的新方法，并结合单片机、E2PROM以及D／A电路，研制了一个信号频率在1～9999.9Hz范围内，按0.1Hz分辨率变化的多波形信号发生器。
  Precisely Adjustable Frequency and Multiform Waveform of Si gnal Generator

Liu Qing1，2
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（1．DeptOf Computer Science, Nanjing Normal University, Nanj ing 210097，China)2．College of Water Conservancy and Electricity, Hehai University, Nanjing 210097，China))

Abstract：The paper introduces an effective way, it has been used to made out a signal generator that frequency of signal can been precisely adjustable and sig nal waveform can beenprogrammed by microprocessor, BCD coefficient multiplier, E2PROM and D／A converter. The frequency of the signals can range from 1 to 9999.9Hz with the resolution being 0.1Hz.

Key words：Instruments；Adjustable Frequency；Signal Waveform；P rogramming；Coefficient Multiplier