What is a dual trace CRO?

A dual trace CRO (Cathode Ray Oscilloscope) is an electronic test instrument that allows users to observe two different signal waveforms simultaneously on the same screen. This capability enables engineers and technicians to compare and analyze the behavior of two signals, such as voltage or current, in real-time. Typically, dual trace CROs use either a switchable or an alternate scanning method to display both traces, making them valuable for troubleshooting and testing electrical circuits.