Xeryon stages move by ultrasonic piezo resonance, not by a rotating motor — the drive signal is a frequency, and the controller tunes it digitally. The XD-C bundles signal generation, amplification and encoder readout for one stage into an 80 x 54 x 23 mm box that plugs straight into USB-C.

Why pick a piezo stage over a screw-driven stage for fine positioning?

A screw or leadscrew stage carries backlash and wind-up, so a 78 nm move can come out as tens of micrometres of slop. The XD-C reads the stage's own encoder and closes the loop at 78 nm linear or 3 µrad rotary, so the stage holds the commanded position without drift — the reason a vision-inspection or metrology setup trusts it to sit still between exposures.

• 48 VDC, 5 W supply; 45 V drive at 0–200 kHz
• USB-C 2.0 plus UART, GPIO, I2C and SPI on the PCB
• 80 x 54 x 23 mm tabletop or OEM build
• Windows GUI, plus Python, C++, LabVIEW and MATLAB libraries

Against a magnetic servomotor stage, the XD-C trades raw speed for sub-micrometre hold — the controller to reach for when the tolerance is in nanometres, not millimetres.