An oscilloscope is an electrical measuring device that displays a graph of a voltage as a function of time. This allows a user to make both voltage and time measurements. Many oscilloscopes can display more than one voltage signal on their screen, which gives us the powerful ability to compare the behavior of these signals. Many engineers, scientists, and technicians pick the oscilloscope as their primary measurement tool because of its range and versatility. Visual representations and wide measuring range are probably the major reasons scopes are so widely used.
Function and arbitrary waveform generators are among the most important and versatile pieces of electronic test equipment. In electronic design and troubleshooting, the circuit under scrutiny often requires a controllable signal to simulate its normal operation. The testing of physical systems and transducers often needs stable and reliable signals. The signal levels needed range from microvolts to tens of volts or more. More advanced models offer a variety of additional waveforms and Arbitrary Waveform Generators can supply user-defined periodic waveforms.