\def\content{The simplest signal to be reconstructed is the loop voltage ($U_l$): The measurement loop of the loop voltage is connected to a voltage divider, therefore the signal must be multiplied by a calibration factor (U\_loop\_calibration) as plotted in Figure \ref{fig:bd_U_l}.
\begin{figure}[ht]
\centering
\GWincludegraphics{trim=0cm 8.5cm 9cm 4cm, clip=true, width=0.5\textwidth}{Diagnostics/Basic/Uloop/bd_U_l.pdf}
	\caption{Block diagram showing the steps of data processing for loop voltage measurement.}
	\label{fig:bd_U_l}
\end{figure}
}

\def\LoopVdescr{
\begin{frame} \frametitle{Loop Voltage}
    \centering
    \GWincludegraphics{width=0.8\textwidth}{Diagnostics/Basic/Uloop/Photos/0912/s1000q100DSC_0231descr.jpg}
\end{frame}}

\def\ccaption#1{\\ \centering #1}
\def\LoopVdescrBase{
    \centering
    \begin{figure}
    \begin{minipage}{0.47\tw}
    \GWincludegraphics{width=0.9\tw}{Diagnostics/Basic/Uloop/Sketch/das.pdf}
    \ccaption{Principle}
    \GWincludegraphics{width=0.9\tw}{ShowRooms/PlasmaPerformance/TextBookPlasma/11722/Ul.pdf}
    \ccaption{Signal}
    \end{minipage}
    \hspace{0.02\textwidth}
    \begin{minipage}{0.47\tw}
    \GWincludegraphics{width=0.9\tw}{Diagnostics/Basic/Uloop/PhotoGallery/ReprePhoto.jpg}
    \ccaption{Photo}
    \end{minipage}
    \end{figure}
}

\def\LoopVdescrSlide{
\begin{frame} \frametitle{Basic diagnostics: Loop Voltage $U_{loop}$}
\LoopVdescrBase
\end{frame}}