Abstract
Signal Source is modern electronic equipment, especially particularly essential part of the test equipment. It is produced benchmarks signal to the tested equipment, to analyze and study the performance of the tested equipment status, is widely used in aerospace electronic test equipment, measurement and scientific research in various fields, and digital, the software is the development trend of test equipment.
According to different systems for the different needs of signal, people hope signal output signals amplitude, frequency tunable, frequency accuracy and stability, even in some cases also request Signal Source output phase is to determine the relationship between multi-channel signals, so the traditional analog signal source has been far from meeting the requirements of modern applications. Direct Digital Synthesis and application of the technology of the all-digital signal source, in order to solve the above problems provide a viable programme.
Key words: Signal Source; Direct Digital Frequency Synthesis; AD9850
