A mixed-signal oscilloscope (MSO) is an advanced electronic testing instrument that combines the capabilities of a digital storage oscilloscope (DSO) with the ability to capture and analyse both analogue and digital signals simultaneously. This makes MSOs particularly useful for troubleshooting and analysing complex electronic systems that involve both analogue and digital components.

Mixed-signal oscilloscopes are essential tools for professionals working on digital designs, embedded systems, communication protocols, and other applications where both analogue and digital signals play a critical role. Their ability to provide simultaneous visibility into both signal types allows for efficient debugging, accurate analysis, and comprehensive testing of complex electronic systems.