Patent ID: 7724842

Claim:
A method for testing an electronic device that includes a transmitter portion and a receiver portion, the method performed by the electronic device and comprising the steps of: the transmitter portion producing in-phase (I-) and quadrature phase (Q-) arrays from a bitstream; the transmitter portion providing the I- and Q-arrays to the receiver portion; the transmitter portion converting the bitstream to a complex waveform; the transmitter portion transmitting the complex waveform; the receiver portion receiving the complex waveform that was transmitted by the transmitter portion; the receiver portion sampling an I-sample voltage and a Q-sample voltage from the complex waveform; the receiver portion receiving the I- and Q-arrays from the transmitter portion; the receiver portion selecting an I-ideal voltage from the I-array, and selecting a Q-ideal voltage from the Q-array, the I-ideal voltage being selected to be time-aligned with the I-sample voltage, the Q-ideal voltage being selected to be time-aligned with the Q-sample voltage; determining an error vector by comparing the I- and Q-sample voltages with the I- and Q-ideal voltages; repeating the producing, providing, converting, transmitting, receiving, sampling, selecting, and determining steps to produce a plurality of error vectors; and determining a root mean square (RMS) from the plurality of the error vectors.