Time delay measurement and maths channel What is delay? Delay is the measure of time between equivalent reference points on two waveforms (usually rising or falling edges). This concept is closely related to phase, but the interval is measured in time, rather than an angle representing how much of the cycle has elapsed. Delay can be used to describe how long the waveform has taken to travel between these two points. To summarise, while they are related concepts, they represent different aspects of waveforms and are measured in different units. More information on Time delay measurement and math channel >>