You will need a way to compare time values recorded on either a rising edge or falling edge, depending on which you choose (pick only one method). This can be accomplished by taking the derivative of the input signal at the crossing and determine if its positive (rising edge) or negative (falling edge). The derivative is defined as: V'[n] = V [n 1] - V[n] Setup your function generator to output a sine wave at 20Hz between 0.5 4.5 V. Measure the output signal with an oscilloscope and have a TA or instructor sign off on this.