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Conv TTL Blocking - Testing
Commit 1a0fbca3 authored by Theodor-Adrian Stana's avatar Theodor-Adrian Stana
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rtm-doc: Updated hardware guide 

- replaced lengthy text that probably no one was going to read for nice
pictures describing how to install the RTM board testers
- added these pictures to the repo
- updated one link in the References section
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rtm/doc/hwg/cern-title.tex
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...@@ -9,7 +9,7 @@ ...@@ -9,7 +9,7 @@
\noindent \rule{\textwidth}{.1cm} \noindent \rule{\textwidth}{.1cm}
\hfill November 13, 2014 \hfill January 16, 2015
\vspace*{3cm} \vspace*{3cm}
......
rtm/doc/hwg/hwg-pts-conv-ttl-rtm-blo.bib
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...@@ -25,5 +25,5 @@ ...@@ -25,5 +25,5 @@
title = {{CONV-TTL-RTM-BLO PTS HDL Guide}}, title = {{CONV-TTL-RTM-BLO PTS HDL Guide}},
month = 11, month = 11,
year = 2014, year = 2014,
howpublished = {\url{http://www.ohwr.org/projects/conv-ttl-blo-tst/wiki#Other-documentation}} howpublished = {\url{http://www.ohwr.org/documents/391}}
} }
rtm/doc/hwg/hwg-pts-conv-ttl-rtm-blo.tex
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...@@ -4,7 +4,7 @@ ...@@ -4,7 +4,7 @@
\documentclass[a4paper,11pt]{article} \documentclass[a4paper,11pt]{article}
% Color package % Color package
\usepackage[usenames,dvipsnames]{color} \usepackage[usenames,dvipsnames,table]{xcolor}
% Appendix package % Appendix package
\usepackage[toc,page]{appendix} \usepackage[toc,page]{appendix}
...@@ -63,6 +63,7 @@ work, see \\ ...@@ -63,6 +63,7 @@ work, see \\
\centerline \centerline
{ {
\rowcolors{2}{white}{gray!25}
\begin{tabular}{l c p{.6\textwidth}} \begin{tabular}{l c p{.6\textwidth}}
\hline \hline
\multicolumn{1}{c}{\textbf{Date}} & \multicolumn{1}{c}{\textbf{Version}} & \multicolumn{1}{c}{\textbf{Change}} \\ \multicolumn{1}{c}{\textbf{Date}} & \multicolumn{1}{c}{\textbf{Version}} & \multicolumn{1}{c}{\textbf{Change}} \\
...@@ -70,6 +71,9 @@ work, see \\ ...@@ -70,6 +71,9 @@ work, see \\
24-01-2014 & 0.1 & First draft \\ 24-01-2014 & 0.1 & First draft \\
13-11-2014 & 0.2 & Second draft, changing link colors, adding licensing information and 13-11-2014 & 0.2 & Second draft, changing link colors, adding licensing information and
updating links in the bibliography \\ updating links in the bibliography \\
16-01-2015 & 1.0 & Added Section~\ref{sec:loopback-mount}, which details the mounting of
the card; this section replaces the large text that was there in the document's previous
version and that served the same purpose as these pictures \\
\hline \hline
\end{tabular} \end{tabular}
} }
...@@ -88,7 +92,7 @@ work, see \\ ...@@ -88,7 +92,7 @@ work, see \\
% List of abbreviations % List of abbreviations
%------------------------------------------------------------------------------ %------------------------------------------------------------------------------
\pagebreak \pagebreak
\section*{List of Abbreviations} \section*{List of abbreviations}
\begin{tabular}{l l} \begin{tabular}{l l}
HDL & Hardware Description Language \\ HDL & Hardware Description Language \\
I$^2$C & Inter-Integrated Circuit (bus) \\ I$^2$C & Inter-Integrated Circuit (bus) \\
...@@ -117,7 +121,7 @@ This document contains information about the hardware of the CONV-TTL-RTM-BLO PT ...@@ -117,7 +121,7 @@ This document contains information about the hardware of the CONV-TTL-RTM-BLO PT
%------------------------------------------------------------------------------ %------------------------------------------------------------------------------
% SUBSEC: Additional docs % SUBSEC: Additional docs
%------------------------------------------------------------------------------ %------------------------------------------------------------------------------
\subsection*{Additional documentation} \subsection{Additional documentation}
\begin{itemize} \begin{itemize}
\item CONV-TTL-BLO User Guide \cite{ctb-ug} \item CONV-TTL-BLO User Guide \cite{ctb-ug}
...@@ -214,34 +218,53 @@ six-channel pulse repeater RTM. ...@@ -214,34 +218,53 @@ six-channel pulse repeater RTM.
} }
\end{table} \end{table}
The RTM board tester is composed of two different parts, a mechanical one that %------------------------------------------------------------------------------
is needed for the male LEMO connectors, and an electrical one, which provides the \pagebreak
electrical connections. \subsection{Mounting the RTM board tester}
\label{sec:loopback-mount}
Since the RTM board contains female LEMO connectors, male connectors were needed %------------------------------------------------------------------------------
for the RTM tester. The FAA.00.250.NTA connectors from LEMO are designed to be
screwed to the board they are mounted on using some hexagonal nuts. This is the The RTM board tester is composed of two boards:
reason for having a mechanical board; this board contains just some holes for
placing the LEMOs and screwing them on the back, and for seeing the rear panel \begin{itemize}
LEDs during the LED test. \item \textbf{the connection board} -- provides the connections in Table~\ref{tbl:rtm-sigs}
\item \textbf{the support board} -- provides a mechanical support for the Lemo~00 patch-panel
Some holes are also provisioned for bringing the mechanical board together with connectors, as well as acting as the return path for currents passing through these
the electrical board using M3 screws. This is needed because the hexagonal nuts connectors
used to fix the connectors onto the mechanical board are also used for connecting \end{itemize}
the GND line on the exterior of the connectors.
The following items are needed to mount one RTM board tester:
The electrical board is very simple. It is designed such that the mechanical board
can be plugged into it with the center pins of the LEMO connectors advancing into \begin{itemize}
the small holes that connect to the PCB traces on the bottom. On the top side, \item 1x connection board
there is one big copper plane that provides an electrical connection between all \item 1x support board
hexagonal nuts on the male LEMO connectors, thus providing the GND line between all \item 3x M2.5 screws
connectors. \item 3x M2.5 hexagonal nuts
\item 12x Lemo FAA.00.250.NTA connectors
After the connectors are mounted on the mechanical board using the hexagonal nuts \end{itemize}
and the mechanical board is coupled with the electrical board using the M3 screws
and nuts, the signal connections in Table~\ref{tbl:rtm-sigs} are provided via Follow this procedure in order to mount the card:
the bottom layer of the PCB, and the GND connections are provided via the top layer
copper pour. \begin{enumerate}
\item Mount the FAA.00.250.NTA connectors to the support board using their hexagonal nuts:
\begin{figure}[h]
\centerline{\includegraphics[width=.7\textwidth]{fig/lemo-to-support.jpg}}
\end{figure}
\item Plug the support board on the connection board with the connectors covering the marked
positions on the connection board:
\begin{figure}[h]
\centerline{\includegraphics[width=.7\textwidth]{fig/support-to-connection.jpg}}
\end{figure}
\pagebreak
\item Fix the two boards together using the three screws and hexagonal nuts:
\begin{figure}[h]
\centerline{\includegraphics[width=.5\textwidth]{fig/fix-together.jpg}}
\end{figure}
\item Finally, solder the Lemo connectors on their pads on the connection board:
\begin{figure}[h]
\centerline{\includegraphics[width=.7\textwidth]{fig/solder.jpg}}
\end{figure}
\end{enumerate}
%============================================================================== %==============================================================================
% Bibliography % Bibliography
...@@ -249,5 +272,6 @@ copper pour. ...@@ -249,5 +272,6 @@ copper pour.
\pagebreak \pagebreak
\bibliographystyle{ieeetr} \bibliographystyle{ieeetr}
\bibliography{hwg-pts-conv-ttl-rtm-blo} \bibliography{hwg-pts-conv-ttl-rtm-blo}
\addcontentsline{toc}{section}{References}
\end{document} \end{document}
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