Cosa è il introduzione a il segnale generatore

Strumenti che generano test segnali sono collettivamente riferiti a come segnale sorgenti.
Also known as a signal generator, it is used to generate electrical test signals with specific parameters required by the circuit under test. When testing, researching, or adjusting electronic circuits and equipment, in order to measure some electrical parameters of the circuit, such as measuring frequency response, noise figure, and calibrating a voltmeter, it is required to provide electrical signals that meet the specified technical conditions to simulate the excitation signals of the equipment to be tested used in actual work. When measuring the steady-state characteristics of a system, it is necessary to use a sinusoidal signal source with known amplitude and frequency. When testing the transient characteristics of a system, it is necessary to use a rectangular pulse source with known leading edge time, pulse width, and repetition period. Moreover, it is required that the parameters of the output signal from the signal source, such as frequency, waveform, output voltage, or power, can be accurately adjusted within a certain range, have good stability, and have output indications. According to the different output waveforms, signal sources can be divided into four categories: sine wave signal generators, rectangular pulse signal generators, functional signal generators, and random signal generators. Sinusoidal signals are the most widely used test signals. This is because the method of generating sinusoidal signals is relatively simple and it is more convenient to measure using sinusoidal signals. Sinusoidal signal sources can also be divided into several types according to the different operating frequency ranges.