Each closed loop system must be calibrated. The travel range of the piezo actuating system must be adjusted to the voltage range of the amplifier.
The calibration is done by a high resolution interferometer set up. A calibration protocol is provided with each calibrated system. If the customer doesn't specify parameters, such as added load, step size, frequency, and travel range, piezosystem jena will do a standard calibration procedure.
piezosystem jena warrants one year for the accuracy of the calibration. Our experience shows, that the calibration is stable over years. If it is necessary, piezosystem jena recalibrate your system as well.
All changes made to the system, e.g. cable modification, installation setups, and temperature differences, affect the accuracy and may change the values of calibration given by the protocol.