Guide to Signal Generators and Analysers

Reviewed by Peter Kendall, Technical Support Engineer (December 2024)

In today's technologically advanced world, signal generators and analysers are indispensable across various industries. Whether you're in telecommunications, electronics, or research and development, having a dependable and precise signal instrument is crucial. 

Signal generators are devices that produce electronic signals of varying frequencies and waveforms. They are extensively used for testing and troubleshooting electronic equipment, calibrating instruments, and simulating real-world scenarios. So, what does a signal generator do? It helps in creating consistent signals for accurate testing and measurement. 

Conversely, signal analysers are tools used to measure and scrutinise electronic signals. They aid in understanding signal characteristics and performance, identifying issues, and ensuring output quality. In this guide, we will delve into the different types of signal generators and analysers available in the market and offer insights on selecting the right instrument for your specific needs.  

What is a signal generator? A signal generator is an electronic device that generates various types of electrical waveforms, such as sine waves, square waves, and triangular waves. These devices are commonly found in laboratories, research facilities, and manufacturing industries for testing, measuring, and calibrating electronic equipment. 

Signal generators are vital tools for engineers, technicians, and scientists working with electronic circuits and systems. They provide a controlled and precise output signal that can be used to stimulate or simulate real-world signals for testing and troubleshooting purposes. But what does a signal generator do specifically? It generates the necessary test signals for evaluating electronic devices and systems. 

Signal generators come in various forms, from basic models with limited functionality to advanced models with a wide array of features. Common types of signal generators include function generators, arbitrary waveform generators, RF signal generators, and digital pattern generators. 

A signal analyser is a powerful tool used in various industries to measure and analyse signals. It is commonly utilised in electronics, telecommunications, and research and development. Signal analysers are essential for troubleshooting, designing, and testing electronic systems. 

Signal analysers can accurately measure and analyse various parameters of a signal, such as frequency, amplitude, phase, and distortion. They can also detect and analyse modulation schemes, noise levels, and signal quality. With the ability to capture and analyse signals in real-time, these devices provide valuable insights into the performance and characteristics of electronic systems. 

Signal analysers come in different types and configurations to cater to different requirements. Common types include spectrum analysers, network analysers, and logic analysers. Spectrum analysers are used to analyse the frequency spectrum of a signal, while network analysers measure the electrical characteristics of a network or device. Logic analysers, on the other hand, capture and analyse digital signals.