The NORTEC 500 series, newest eddy current flaw detectors incorporate full range of features i.e internal balance coils, VGA output connector (for heads up displays, monitors, and projectors), and USB interface for rapid information transfer. The NORTEC 500 also includes PowerLink, for automatic probe recognition and program set-up. The NORTEC 500 improves on previous NORTEC eddy current instruments and is available in four configurations. Each configuration includes USB port and increased resolution with reduced noise. Internal balance coils allow use of inexpensive absolute probes without the need for external balance coil adapters. A built-in preamp adds extra gain when needed for difficult tests. VGA output allows for the display to be projected or viewed on a standard computer screen. The optional remote-null adapter adds convenience by allowing the probe to be nulled and the instrument screen erased from the probe.