A measuring device serves the purpose of performing measurements of a measuring signal generated by a device under test. The measuring signal uses carrier aggregation of at least a first carrier and a second carrier. The measuring device comprises a high-frequency unit adapted to receive the measuring signal comprising the first carrier and the second carrier and a control unit. The control unit comprises a measuring unit adapted to perform measurements on the received measuring signal. While performing these measurements, it is assumed that an alignment of a power of the first carrier and a power of the second carrier is present. Moreover, the control unit comprises a power alignment determination unit adapted to determine, based upon results of the measurements of the measuring unit, whether the power of the first carrier and the power of the second carrier are in alignment. The control unit is adapted to discard at least some of the results of the measurements, if a lack of alignment of the power of the first carrier and the power of the second carrier is determined by the power alignment determination unit.