The signal generator is a device which can provide all kinds of frequency, wave form. During the testing the amplitude characteristic, frequency characteristic, transfer characteristic and other electrical parameter of the telecommunication system or the equipment, the signal generator can be used as the signal source.

The signal generator can be called signal source or the oscillator, which has a wide application in the production practice and technology territory. All kind of squiggle can be showed with the equation.

The signal generator also has a wide application in the experiment of circuit and detection. For example, in the communication, broadcast, TV system. In the territory like industrial, agricultural, bio-medicine, such as high frequency induction heating, melting, quenching, ultrasonic diagnosis and others.