Index: trunk/MagicSoft/TDAS-Extractor/Algorithms.tex
===================================================================
--- trunk/MagicSoft/TDAS-Extractor/Algorithms.tex	(revision 6494)
+++ trunk/MagicSoft/TDAS-Extractor/Algorithms.tex	(revision 6495)
@@ -792,10 +792,12 @@
 \subsubsection{Real Fit to the Expected Pulse Shape }
 
-This extractor is not yet implemented as MARS-class...
-\par
-It fits the pulse shape to a Landau convoluted with a Gaussian using the following 
-parameters:...
-
-\ldots {\it Hendrik, Wolfgang ... }
+This extractor is not yet implemented as MARS-class... \ldots {\it Hendrik, Wolfgang ... }
+\par
+
+The digital filter is a sophisticated numerical tool to fit the read-out FADC samples with the expected wave form taking the autocorrelation of the noise into account. In order to cross-check the results a pulse shape fit has been implemented using the root TH1::Fit routine. For each event the FADC samples of each pixel are filled into a histogram and fit by the expected wave form having the time shift and the area of the fit pulse as free parameters. The results are in very good agreement with the results of the digital filter. 
+
+Figure \ref{fig:probability_fit} shows the distribution of the fit probability for simulated MC pulses. Both electronics and NSB noise are simulated. The distribution is mainly flat with a slight excess in the very lowest probability bins.
+
+
 
 \begin{figure}[h!]
@@ -804,5 +806,5 @@
 \end{center}
 \caption[Fit Probability.]{Probability of the fit with the input signal shape to the simulated FADC samples 
-including electronics and NSB noise.} \label{fig:w_amp_MC_input_TDAS.eps}
+including electronics and NSB noise.} \label{fig:probability_fit}
 \end{figure}