Experiment On High Precision Phase And Frequency Adjuster

As well known that frequency is the physical variable with the highest resolution now. So many other variables like length often are measured by measuring frequency indirectly for higher resolution. Many research works have being done in several developed countries. And Some Devices have been made. But in our country the work is just begin.This paper first introduced meaning of our work. Then it brought forward our High Resolution Phase and Frequency Adjuster's intending performance referring to the performance of SYMMERICOM's auxiliary output generator named AOG-110. In the main part this paper introduced the designing thoughts of the hardware by different modules, and the designing thoughts of the software by different functions. It also introduced some ICs that we had used such as ALTREA's Complex Programmable Logic Device (CPLD) and AD's Direct Digital Frequency Synthesizer (DDS). It also said something about 51 series SCM's designing tool named KEIL. Then it introduced the tests on the system and listed the results of them. My plan on the followed study was given at the end.