As part of an evaluation of the Atmel ATxmega128A1, it can be of interest to measure its power consumption. The power jumper (J300) is connected between the 3.3V regulated voltage from the regulator and the ATxmega128A1 supply. By replacing the jumper with an ammeter, it is possible to measure the current consumption of the ATxmega128A1. No other components are connected to the same supply as the ATxmega128A1, and other components, therefore, do not affect the measurement of the ATxmega128A1 current consumption (except the DC leakage in the decoupling capacitors).