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White Rabbit
Commit fa94b91f authored by Javier Serrano's avatar Javier Serrano
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Changes after rehearsing with team mates

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presentations/WR_Javier_WRWS2017_Intro/wr_workshop_2017_intro.tex
View file @ fa94b91f
...@@ -204,6 +204,7 @@ Rabbit\hspace{6em}\insertframenumber/\inserttotalframenumber]{White ...@@ -204,6 +204,7 @@ Rabbit\hspace{6em}\insertframenumber/\inserttotalframenumber]{White
\item Layer 1 syntonization \item Layer 1 syntonization
\item Digital Dual Mixer Time Difference (DDMTD) \item Digital Dual Mixer Time Difference (DDMTD)
\item Link delay model \item Link delay model
\item WR-PTP (backward-compatible extension of PTP)
\end{itemize} \end{itemize}
\end{block} \end{block}
\end{frame} \end{frame}
...@@ -299,19 +300,19 @@ Rabbit\hspace{6em}\insertframenumber/\inserttotalframenumber]{White ...@@ -299,19 +300,19 @@ Rabbit\hspace{6em}\insertframenumber/\inserttotalframenumber]{White
\end{center} \end{center}
\end{frame} \end{frame}
% \begin{frame}{Digital Dual Mixer Time Difference}{DDMTD} \begin{frame}{Digital Dual Mixer Time Difference}{DDMTD}
% \begin{itemize} \begin{itemize}
% \item Used for precise phase measurements \item Used for precise phase measurements
% \item Implemented in FPGA and SoftPLL \item Implemented in FPGA and SoftPLL
% \item 62.5MHz WR clock and N=14 results in 3.814kHz output signals \item 62.5MHz WR clock and N=14 results in 3.814kHz output signals
% \end{itemize} \end{itemize}
% \vspace{-0.2cm} \vspace{-0.2cm}
% \begin{center} \begin{center}
% \includegraphics[width=\textwidth]{misc/dmtd_2N.pdf} \includegraphics[width=\textwidth]{misc/dmtd_2N.pdf}
% \end{center} \end{center}
% \end{frame} \end{frame}
% %\begin{frame}{Deglitching algorithm -- to backup slides?} % %\begin{frame}{Deglitching algorithm -- to backup slides?}
% %\end{frame} % %\end{frame}
...@@ -368,13 +369,13 @@ Rabbit\hspace{6em}\insertframenumber/\inserttotalframenumber]{White ...@@ -368,13 +369,13 @@ Rabbit\hspace{6em}\insertframenumber/\inserttotalframenumber]{White
\end{center} \end{center}
\end{frame} \end{frame}
\begin{frame}{Simplified block diagram of the gateware} % \begin{frame}{Simplified block diagram of the gateware}
\begin{center} % \begin{center}
\begin{adjustwidth}{-1.5em}{-1.5em} % \begin{adjustwidth}{-1.5em}{-1.5em}
\includegraphics[width=1.1\textwidth]{switch/switch_hdl_simple.pdf} % \includegraphics[width=1.1\textwidth]{switch/switch_hdl_simple.pdf}
\end{adjustwidth} % \end{adjustwidth}
\end{center} % \end{center}
\end{frame} % \end{frame}
\begin{frame}{WR Node: SPEC board} \begin{frame}{WR Node: SPEC board}
......
presentations/WR_Javier_WRWS2017_high_precision/wr_workshop_2017_high_precision.tex
View file @ fa94b91f
...@@ -164,6 +164,16 @@ $ E(s) = 1 - H(s) = \frac{s}{s + K_{VCO} K_d F(s)} $ ...@@ -164,6 +164,16 @@ $ E(s) = 1 - H(s) = \frac{s}{s + K_{VCO} K_d F(s)} $
\includegraphics[height=0.7\textwidth]{misc/pll_psd.pdf} \includegraphics[height=0.7\textwidth]{misc/pll_psd.pdf}
} }
\begin{frame}{How to drive the phase noise PSD curve down?}
\begin{block}{Medium and high (Fourier) frequencies}
Easy! Just buy a better oscillator. OCXO-based WR node in
development at CERN achieves 100fs jitter (100Hz-5MHz).
\end{block}
\begin{block}{Low (Fourier) frequencies}
Tricky. Usually involves serious architectural changes. See later.
\end{block}
\end{frame}
\section{White Rabbit case} \section{White Rabbit case}
\subsection{} \subsection{}
\begin{frame}{WR time transfer performance: basic test setup} \begin{frame}{WR time transfer performance: basic test setup}
...@@ -182,15 +192,6 @@ $ E(s) = 1 - H(s) = \frac{s}{s + K_{VCO} K_d F(s)} $ ...@@ -182,15 +192,6 @@ $ E(s) = 1 - H(s) = \frac{s}{s + K_{VCO} K_d F(s)} $
\end{frame} \end{frame}
\begin{frame}{How to drive the phase noise PSD curve down?}
\begin{block}{Medium and high (Fourier) frequencies}
Easy! Just buy a better oscillator. OCXO-based node in development
at CERN achieves 100fs jitter (100Hz-5MHz).
\end{block}
\begin{block}{Low (Fourier) frequencies}
Tricky. Usually involves serious architectural changes. See next.
\end{block}
\end{frame}
\begin{frame}{Digital Dual Mixer Time Difference}{DDMTD} \begin{frame}{Digital Dual Mixer Time Difference}{DDMTD}
\begin{itemize} \begin{itemize}
...@@ -204,7 +205,7 @@ $ E(s) = 1 - H(s) = \frac{s}{s + K_{VCO} K_d F(s)} $ ...@@ -204,7 +205,7 @@ $ E(s) = 1 - H(s) = \frac{s}{s + K_{VCO} K_d F(s)} $
\end{center} \end{center}
\end{frame} \end{frame}
\begin{frame}{Daughterboard Test Setup} \begin{frame}{Test setup for 10MHz switch output}
\begin{center} \begin{center}
\includegraphics[width=\textwidth]{measurements/WRSlowJitter/rsz_experimental_setup.png} \includegraphics[width=\textwidth]{measurements/WRSlowJitter/rsz_experimental_setup.png}
\end{center} \end{center}
...@@ -248,17 +249,6 @@ $ E(s) = 1 - H(s) = \frac{s}{s + K_{VCO} K_d F(s)} $ ...@@ -248,17 +249,6 @@ $ E(s) = 1 - H(s) = \frac{s}{s + K_{VCO} K_d F(s)} $
\end{center} \end{center}
\end{frame} \end{frame}
\begin{frame}{Test Results in Slave mode: PM noise}
\begin{center}
\includegraphics[height=.85\textheight]{measurements/WRSlowJitter/slave_pn.png}
\end{center}
\end{frame}
\begin{frame}{Test Results in Slave mode: Modified ADEV}
\begin{center}
\includegraphics[height=.85\textheight]{measurements/WRSlowJitter/slave_mdev.png}
\end{center}
\end{frame}
\begin{frame}{Need more information?} \begin{frame}{Need more information?}
\begin{center} \begin{center}
......
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