4.
Alignment and Measurement
4.6.3.
Non-centered ACF
The autocorrelation function should ideally be centered in the measurement window. In case of
a large scan offset the ACF may be cut off to the left or right of the scan range. If the measured
autocorrelation trace deviates too much from symmetry the info box shows an "Asymmetric" error
message (see Figure 4.20).
Figure 4.20.: ACF cut off to the left due to too large scan offset
Action: Adjust SETUP
→
Offset or optimize the beam alignment into the
Pulse
Scout2 optical
head.
Pulse
Scout2 Version 1.1
40
July 2015
