Commit 3dae565c authored by Maciej Lipinski's avatar Maciej Lipinski

[WIP] Sent to Javier

parent 2d9ecce5
......@@ -418,25 +418,25 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
% \includegraphics<4->[height=2.3cm]{misc/inaccuracy-sources-fixed-delays.jpg}
% \end{center}
\begin{columns}[c]
\column{0.6\textwidth}\vspace{-0.5cm}
\column{0.65\textwidth}\vspace{-0.5cm}
\begin{itemize}\scriptsize
\item<1-> \textbf{Bitslide} -- measurement uncertainty
\begin{itemize}\scriptsize
\item Measured each time link goes up
\item Value provided by GTX of FPGA
\item Error: $\pm$25ps [7]
\item Error: $\pm$35ps for GTX
\item Remedy: ensure bitslide is zero \\(ongoing work at CERN)
\end{itemize}
\item<2-> \textbf{PCB, FPGA, SFP} -- hardware delay uncertainty
\begin{itemize}\scriptsize
\item Calibration uncertiainty: sdev of 2ps [7]
\item Linear dependency on temp (700ps over $-10..55^oC$):
\item Linear dependency on temperature\\ (700ps over $-10..55^oC$):
\begin{itemize}\tiny
\item CuteWR: tx $-8.4ps/K$, rx $13.3ps/K$ [6]
\item Switch: 8ps/K [7]
\item WR-Zen: 4ps/K [7]
\end{itemize}
\item Remedy: active compensation \\(implemented for LHASSO, 50ps over $-10..55^oC$ [6])
\item Remedy: active compensation \\(for LHASSO, 50ps over $-10..55^oC$ [6])
% \item SFP delay dependency on input power, error up to 30ps [2]
\end{itemize}
\end{itemize}
......@@ -469,7 +469,7 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\begin{itemize}\scriptsize
\item<1-> \textbf{SFP} -- tx wavelength uncertainty
\begin{itemize}\scriptsize
\item<2-> Allowed departure from nominal value \\(10nm at 1490nm, 50nm at 1310nm [7])
\item<2-> IEEE802.3ah allows nominal value departures\\(10nm at 1490nm, 50nm at 1310nm)
\item<3-> Linear dependency on SFP temp:
\begin{itemize}\tiny
\item SFP@1310nm: $0.11 ps/(K \cdot km)$ [6]
......@@ -486,15 +486,17 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\item G652.D at 1490/1550: $-0.05 ps/(K\cdot km)$ [7]
\end{itemize}
\end{itemize}
\item<5-> Significant for links $>10km$
\item<5-> Significant for links $>10km$ [7]
\item<6-> Remedy: temp-stabilized SFP, closer wavelength \\(CH21\& CH23 @ 1560.61 \& 1558.98 in SKA [7])
\end{itemize}
\column{0.45\textwidth}
\begin{center}\vspace{-0.5cm}
\includegraphics<3>[width=0.6\textwidth]{measurements/sfp-temp-dependence.jpg}
\includegraphics<4-5>[width=\textwidth]{measurements/fiber-temp-dependency.jpg}
\includegraphics<6>[width=\textwidth]{applications/SKA-DWDM.jpg}
\includegraphics<4>[width=\textwidth]{measurements/fiber-temp-dependency.jpg}
% \includegraphics<5->[width=\textwidth]{applications/SKA-DWDM.jpg}
\includegraphics<5->[width=\textwidth]{measurements/PBowen-link-errors.jpg}
% \tiny\pause\pause\pause
% Figure source: [1]
\end{center}
......@@ -522,7 +524,8 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\begin{itemize}\scriptsize
\item Flicker PM noise: -100 dBc at 1 Hz
\begin{itemize}\tiny
\item $<$ 10Hz, limits MDEV at $\tau=1s$ to 4E-13
\item Dominant $<$ 10Hz,
\item MDEV at $\tau=1s$ to 4E-13
\item LVDS input clock buffer and clock routing
\end{itemize}
\item White PM noise: -108 dBc
......@@ -543,8 +546,9 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\includegraphics<1>[width=.99\textwidth]{measurements/DDMTD-noise.jpg}
\includegraphics<2>[width=.99\textwidth]{measurements/DDMTD-future-tech-noise.jpg}
\end{center}
\end{columns}
\end{columns}\vspace{0.5cm}
\begin{center}
\tiny NOTE: Carrier is 10MHz\\
\tiny All above data is based on [13]
\end{center}
\end{frame}
......@@ -646,13 +650,13 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\begin{itemize}\scriptsize
\item Jitter improvement [13, 15]
\begin{itemize}\scriptsize
\item GM: 9ps to $<$2ps RMS 10Hz-100kHz
\item BC:
\item GM: 9ps to 1ps RMS 1Hz-100kHz
\item BC: 11ps to $<2$ps RMS 1Hz-100kHz
\end{itemize}
\item ADEV improvement [13, 15]
\item MDEV improvement [13, 15]
\begin{itemize}\scriptsize
\item GM: 1.4E-11 to $<$5E-13 $\tau$=1s ENBW 50Hz
\item BC:
\item GM: 2E-12 to $<$5E-13 $\tau$=1s ENBW 50Hz
\item BC: 4E-12 to $<$7E-13 $\tau$=1s ENBW 50Hz
\end{itemize}
\end{itemize}
......@@ -666,8 +670,8 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\begin{itemize}\small
\item<1-> Standardization in IEEE 1588:
\begin{itemize}\scriptsize
\item High Accuracy sub-committee in dedicated to WR
\item WR to become Default High Accuracy Profile
\item High Accuracy sub-committee dedicated to WR
\item High Accuracy, a.k.a. WR, to become a third Default PTP Profile
\item Revised standard expected in 2019.
\end{itemize}
\item<2-> Long-haul link
......@@ -751,13 +755,17 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
%For more information see http://www.ohwr.org/projects/white-rabbit/wiki
\end{frame}
\begin{frame}{Need more information?}
\begin{frame}{QA}
\begin{center}
\includegraphics[height=4.0cm]{misc/white_rabbit_end.png}
\end{center}
\begin{center}
http://www.ohwr.org/projects/white-rabbit/wiki
Thank you for attention!\\ Any questions?
\end{center}
\vspace{1cm}
\begin{center}\scriptsize
WR Project page: http://www.ohwr.org/projects/white-rabbit/wiki
\end{center}
\end{frame}
......@@ -784,6 +792,27 @@ INRIM & Italy & 70~km & 610ps $\pm$47ps\\ \hline
\end{enumerate}
\end{frame}
\begin{frame}{References}
\begin{center}
Backup slides
\end{center}
\end{frame}
\begin{frame}{GM Switch with LJD: PM noise and Modfied ADEV}
\begin{center}
\includegraphics[width=.5\textwidth]{measurements/WRSlowJitter/pn.png}
\includegraphics[width=.5\textwidth]{measurements/WRSlowJitter/mdev.png}
\end{center}
\end{frame}
\begin{frame}{BC Switch with LJD: PM noise and Modfied ADEV}
\begin{center}
\includegraphics[width=.5\textwidth]{measurements/WRSlowJitter/slave_pn.png}
\includegraphics[width=.5\textwidth]{measurements/WRSlowJitter/slave_mdev.png}
\end{center}
\end{frame}
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% \subsection{}
% \begin{frame}{Performance Enhancements}
......
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