【摘要】 介绍采用高速微控制器,通过键盘及LCD人机界面控制DDS芯片AD9833产生相应频率的正弦波,为KIS地震监测仪表系统提供性能测试和响应测试信号,用于KIS系统现场测试,测试结果表明该方案具有较高精度和实用价值。更多还原

【Abstract】 High speed micro-controller is adopted,and by using the keyboard and LCD user interface,DDS chip AD9833 is controlled to generate the sine wave meeting the frequency requirements.This design provides the signals of performance and response test for the KIS seismic instrumentation,and could be used for the on-site examination of KIS seismic instrumentation.The measurement results indicated that the scheme is of high accuracy and practical value.更多还原