4.
Alignment and Measurement
4.6.2.
Clipping of the ACF or Overload
Intensity too high:
An intense autocorrelation signal due to too high laser power can lead to an overload of the detec-
tor. The consequence is clipping of the measurement trace (see Figure 4.18). Clipping prevents
the software from calculating the ACF value and must be avoided.
Figure 4.18.: A too high signal leading to ACF clipping is indicated by the info box.
Action: Decrease sensitivity in the SETUP menu or decrease laser power incident into the
Pulse
Scout2 !
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July 2015