THORLABS K-Cube Piezo Controller User Manual page 34

Chapter 5
5.4.3 Using the Controller as a Piezo Amplifier
Certain applications may require the piezo to be driven by a voltage generated from
an external source (e.g. a signal generator). The piezo K-Cube is designed to accept
an external 0 to 10V signal and handle the amplification from 10V to 75 or 150V.
As an example, the following procedure explains how to configure the unit as a piezo
amplifier.
1) Connect a 0 - 10V external source to the EXT IN connector on the rear panel.
2) In the GUI panel, click the 'Settings button to display the settings panel, then
select the 'Advanced' tab.
Fig. 5.6 Piezo settings panel
3) In the 'Input Source' field, select Software + External signal.
4) In the 'Analogue Input Mode' field, select External SMA signal.
5) Click 'OK' to save the settings and close the window.
Any voltage on the rear panel SMA connector is now amplified by the unit and
presented at the HV OUT (piezo drive) connector and the position of the piezo
actuator can be controlled by varying the 0-10V external source.
If required, the contribution of the potentiometer on the top panle of the unit can also
be added by selecting the appropriate option in the 'Input Source' field. In this way it
is possible to adjust the DC level on the output whilst adding an AC signal to this DC
level via the external SMA terminal.
34 HA0365T Rev Dk Jan 2017