Learn how to get the most out of your digital oscilloscope. The board generates a range of safe "real world signals that we will use to make measurements. Get acquainted with AC, DC and frequency measurements, sine and square waves, power supply, full and half wave rectifiers, oscillators, etc. .Learn what terms like v/div, time/div, trigger level, auto-setup, etc. . Average. All experiments presented in this project are performed using the handheld pocket range of Velleman HPS140. Most experiments can be done with any digital memory range. Some experiments can be done with an analog scope.