49
T-Cube Position Aligner
14) The piezos drivers will position the piezo mirror such that the laser beam is held
central within the detector array, i.e. for a 75V piezo, the X Out and Y Out values
show around 0V (37.5V piezo drive) and the spot is central within the display as
shown below.
Fig. 5.14 TARGET and VOLTS Displays Showing Values At Mid Position
15) If any positional changes occur, due perhaps to thermal drift, the position aligner
sends a signal to the piezo drivers to reposition the beam such that it is maintained
in a central position.
