From 8e4903a8dc80ae22ae3799c729a8a94a7b589f35 Mon Sep 17 00:00:00 2001
From: Andreas Neiser <neiser@kph.uni-mainz.de>
Date: Mon, 15 Apr 2013 08:44:44 +0200
Subject: [PATCH] Added some more hints for PaDiWa

---
 trb3/WasaFrontend.tex | 43 +++++++++++++++++++++++++++++++------------
 1 file changed, 31 insertions(+), 12 deletions(-)

diff --git a/trb3/WasaFrontend.tex b/trb3/WasaFrontend.tex
index 0efa56c..bb3f664 100644
--- a/trb3/WasaFrontend.tex
+++ b/trb3/WasaFrontend.tex
@@ -47,21 +47,40 @@ Note that up to 16 commands can be sent to a board with one trbnet access: Load
 \label{tab:spiselect}
 \end{table}
 
+% the table above makes some ugly formatting :/
+% the typical LaTeX problem: too little text, too many floats :)
+\clearpage
 \subsubsection{Some Hints for Beginners}
 
-Just some quick notes from a first user perspectives, also very bad
-Latex formatting, sorry.
-\begin{itemize}
-\item The thresholds can either be set by the padiwa.pl script in the
-  daqtools repository or via the web frontend (choose Padiwa SPI and
-  set the reference to 3300 mV). There's also some script which sets
-  the thresholds automagically.
+Just some quick notes from a first user perspectives. 
+
+\begin{itemize*}
+\item The thresholds can either be set by the \verb!padiwa.pl! script
+  in the daqtools repository or via the web frontend (choose Padiwa
+  SPI and set the reference to 3300 mV). There's also some script
+  which sets the thresholds automagically, see folder \verb!thresholds!.
 \item Due to the somewhat special design, it is expected behaviour
   that you see no counts for very low thresholds, then some noise at
-  about the bias voltage (approx. 1.7 V) and then again no counts at
-  very high thresholds. The Board is designed for negative input
-  peaks, but positive could also work.
+  about the bias voltage ($\approx1.7\,\text{V}$) and then again no
+  counts at very high thresholds. The Board is designed for negative
+  input peaks, but positive could also work.
 \item Maybe you need to set the invert feature of the Padiwa board
   such that the TDC in the peripheral accepts the events (only events
-  which are green highlighted in the Webinterface seem to be read out).
-\end{itemize}
\ No newline at end of file
+  which are green highlighted in the Webinterface seem to be read
+  out). This is not valid for the two edge versions of the padiwa TDC
+  firmwares.
+\item The correct powercycle procedure seems to be (otherwise the
+  \verb!padiwa.pl! returns a random uid, so your frontend is not
+  accessible):
+  \begin{enumerate}
+  \item Power down all components and kill \verb!trbnetd!.
+  \item Power up the PaDiWa frontends.
+  \item Power up the TRB Boards.
+  \end{enumerate}
+
+\end{itemize*}
+
+%%% Local Variables: 
+%%% mode: latex
+%%% TeX-master: "main"
+%%% End: 
-- 
2.43.0