Signal generators are widely used in various fields. They can be described as essential modules in signal modulation and demodulation, control, research and testing and other areas. The design is includes three parts:power, signal generator ,frequency meter .Designer comparing the various design and choose the best option ,then Design and production PCB board. Power provide the regulated power to every part. Signal Generator is the mian part in this design, here is the use of XR2206. It can produce the sine wave, square wave and triangular wave,which can regulate frequency and amplitude.The part of frequency test used to display some of the output signal frequency value. To the core of the frequency meter AT89C51 ,mainly completed and the results showed that the frequency measurements.
Keywords: Signal Generator, XR-2206, Power Regulators, PCB, Digital frequency meter