2.2 Calibration Procedure
2.2.1 Setting the drive/detector unit
Calibration can be performed in either setup shown in Figs. 2.1 and 2.2
In either Fig.2.1 or Fig. 2.2, the faces A and B in Fig. 2.3 serve as the reference faces for setting the detector parallel to the reference specimen placed on the calibration stage, as shown in Fig.2.4