warning for low trigger rate with DABC

diff --git a/trb3/trb3qs_analysis.tex b/trb3/trb3qs_analysis.tex
index c247e5448e604233a958812a3d7db75a74367fe8..57db5334bd66418dd057f378986f3c72897eed97 100644 (file)
--- a/trb3/trb3qs_analysis.tex
+++ b/trb3/trb3qs_analysis.tex
@@ -3,7 +3,7 @@
 
 Now you can control your DAQ system and take data.
 To analyse the data different groups prepared software packages.
-All tools need root as a prerequsite the root package from cern.
+All tools need root as a prerequisite the root package from CERN.
 To install do the following:
 
 \begin{lstlisting}[label=,caption=Install ROOT]
@@ -106,6 +106,10 @@ wget https://subversion.gsi.de/go4/app/stream/applications/trb3tdc/first.C
 
 Then continue as described in the Readme.txt.
 
+\begin{warning} You will not see any event delivered by DABC, if your trigger
+  rate is set too low, e.g. 100~Hz. First set your trigger rate to a higher
+  value, ~1kHz, start the DABC and go to lower rates, if you still need to.
+\end{warning}
 
 
 %\begin{figure}[!ht]