![]() ![]() For inscribing the variations of a signal in time, a pen and paper can be used. The type and technique of display affect the quality of the measurement. ![]() What is measured is the distance between certain points on the marked trace that is a representative of the waveform for the physical variable concerned. This requires conversion of the physical variable into a trace through a writing mechanism and a medium over which the information can be imprinted. It is a necessity for engineers to observe waveforms for various signals in order to make certain measurements and compare them to each other. A waveform is a graphic representation of a wave. WAVEFORM DISPLAY DEVICES The signal is a physical variable (such as force, velocity, voltage, current etc) associated with a system and it is almost always a function of time. ![]()
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