The US-454A is a portable, hand-held, battery-operated multi-frequency eddy current instrument that can be connected to a laptop, PC and motion controllers for use in semi- or fully automatic data collection applications. Two encoder inputs enable position stamping of data. Pulse-on position input is ideal for motion control applications. Ethernet and USB capabilities allow instrument control along with time- and position-stamped data transfer to the client computer. Built from the rugged US-454 architecture, the US-454A offers single- and multi-frequency inspection, frequency mixing capabilities, enhanced signal-to-noise ratio, USB, Ethernet and data storage capability, and unprecedented digital strip chart data collection.