Audio/video test equipment is used to measure and test the performance of audio and video components and systems. This includes measuring frequency response, distortion, signal-to-noise ratio, crosstalk, and other electrical properties. It can also be used for calibrating a system to match the performance of a reference signal or for analyzing the transfer characteristics of various pieces of equipment. Audio/video test equipment can be used to troubleshoot audio and video systems, ensuring they produce the highest quality possible. Examples of audio/video test equipment include oscilloscopes, signal generators, spectrum analyzers, and audio/video decoders.