Abstract:High speed microcontroller 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 onsite examination of KIS seismic instrumentation. The measurement results indicated that the scheme is of high accuracy and practical value.
Fu Hua and Chen Zhigao,$author.xingMing_EN. DESIGN OF TESTING SIGNAL SOURCE BASED ON DDS FOR KIS SEISMIC INSTRUMENTATION[J]. jgg, 2010, 30(Supp.2): 105-108.