Delivering new benchmarks in dynamic performance and accuracy, Queensgate's NPC-D-5200 is a digital controller for use with the company's highly advanced closed loop piezo actuators and stages. Queensgate pioneered the use of capacitive sensors to provide precise positional feedback in closed loop; the NPC-D-5200 incorporates a precision capacitive measurement circuit and is updated with the stage position 120,000 times per second, delivering high positional accuracy at speed. It has the capacity to address a broad spectrum of highly demanding alignment and metrology applications. By employing proprietary low-noise technology, stage position noise has been reduced so that in the majority of implementations it is just a few tens of pm.