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White Rabbit
Commit 114f1aa4 authored by Javier Serrano's avatar Javier Serrano
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presentations/WR_Javier_Maciej_WRITE_2020/wr_write_2020.tex
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...@@ -491,7 +491,7 @@ ...@@ -491,7 +491,7 @@
\end{frame} \end{frame}
\begin{frame}{WR time \& frequency tranfser: state of the art} \begin{frame}{WR time \& frequency transfer: state of the art}
\begin{center} \begin{center}
\includegraphics[width=0.8\textwidth]{measurements//RF-ertm_clka_100mhz_ocxo_250m_out-v2.png} \includegraphics[width=0.8\textwidth]{measurements//RF-ertm_clka_100mhz_ocxo_250m_out-v2.png}
...@@ -541,22 +541,22 @@ ...@@ -541,22 +541,22 @@
\begin{frame}{White Rabbit Switch firmware v6.0} \begin{frame}{White Rabbit Switch firmware v6.0}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{itemize}\small \begin{itemize}\small
\item Latest firwmare release for WRS-v3 on 12 June 2020 (\textcolor{cyan}{\href{https://ohwr.org/project/wr-switch-sw/wikis/Release-v60}{see}}) \item Latest firmware release for WRS-v3 on 12 June 2020 (\textcolor{cyan}{\href{https://ohwr.org/project/wr-switch-sw/wikis/Release-v60}{see}})
\item Highlights: \item Highlights:
\begin{itemize}\scriptsize \begin{itemize}\scriptsize
\item Low phase drift calibration (ports 1-12 only) - improved phase stability between link restarts $<$10ps \item Low phase drift calibration (ports 1-12 only) - improved phase stability between link restarts $<$10ps
\item WRS Low Jitter Daugherboard support \item WRS Low Jitter Daughterboard support
% \item Preamble shrinkage support % \item Preamble shrinkage support
% \item Port mirroring to include CPU-originated traffic % \item Port mirroring to include CPU-originated traffic
\item Leap-second file handling and updating \item Leap-second file handling and updating
% \item Kerberos for authentication % \item Kerberos for authentication
\item Reorganized dot-config, more PTP parameters exposed \item Reorganised dot-config, more PTP parameters exposed
\item PPSi reorganization to prepare for IEEE1588 HA profile \item PPSi reorganisation to prepare for IEEE1588 HA profile
\item PPSi compatibility with standard PTP improved (BMCA fixed) \item PPSi compatibility with standard PTP improved (BMCA fixed)
\end{itemize} \end{itemize}
\item NOTE: \item NOTE:
\begin{itemize}\scriptsize \begin{itemize}\scriptsize
\item dot-config is re-organized, use \textbf{wrs\_menuconfig} to generate configuration \item dot-config is re-organised, use \textbf{wrs\_menuconfig} to generate configuration
\item it takes much longer to start the WR switch due to calibration, be patient \item it takes much longer to start the WR switch due to calibration, be patient
\end{itemize} \end{itemize}
\end{itemize} \end{itemize}
...@@ -611,7 +611,7 @@ ...@@ -611,7 +611,7 @@
\item FPGA Zynq Ultrascale+ MPSoC ZU17 \\ \item FPGA Zynq Ultrascale+ MPSoC ZU17 \\
GTH to front panel, GTY to expansion board GTH to front panel, GTY to expansion board
\item Extension board (holdover, 25Gbps) \item Extension board (holdover, 25Gbps)
\item Price-optimized for commercialisation \item Price-optimised for commercialisation
% \begin{itemize}\scriptsize % \begin{itemize}\scriptsize
% \item Inputs from WR community % \item Inputs from WR community
% \item Study on the features and mainboard of the WRS-4\\ % \item Study on the features and mainboard of the WRS-4\\
...@@ -718,9 +718,9 @@ $[9]$ \textbf{WR Calibration}, version 1.1, G.Daniluk, \url{www.cern.ch/white-ra ...@@ -718,9 +718,9 @@ $[9]$ \textbf{WR Calibration}, version 1.1, G.Daniluk, \url{www.cern.ch/white-ra
$[10]$ \textbf{White Rabbit Switch:} \url{www.ohwr.org/project/white-rabbit/wikis/Switch}\\ $[10]$ \textbf{White Rabbit Switch:} \url{www.ohwr.org/project/white-rabbit/wikis/Switch}\\
$[11]$ \textbf{White Rabbit Node:} \url{www.ohwr.org/project/white-rabbit/wikis/Node}\\ $[11]$ \textbf{White Rabbit Node:} \url{www.ohwr.org/project/white-rabbit/wikis/Node}\\
$[12]$ \textbf{White Rabbit PTP Core:} \url{www.ohwr.org/project/wr-cores/wikis/Wrpc-core}\\ $[12]$ \textbf{White Rabbit PTP Core:} \url{www.ohwr.org/project/wr-cores/wikis/Wrpc-core}\\
$[13]$ \textbf{White Rabbit: a PTP application for robust sub-nanosecond synchronization}, M. Lipiński et el, ISPCS2011\\ $[13]$ \textbf{White Rabbit: a PTP application for robust sub-nanosecond synchronization}, M. Lipiński et al, ISPCS2011\\
~~~~~~~ \url{www.ohwr.org/project/white-rabbit/uploads/cfc34350adcbf5156f968fac0b9301b5/ISPCS2011_WR.pdf}\\ ~~~~~~~ \url{www.ohwr.org/project/white-rabbit/uploads/cfc34350adcbf5156f968fac0b9301b5/ISPCS2011_WR.pdf}\\
$[14]$ \textbf{White Rabbit Clock Synchronization: Ultimate Limits on Close-In Phase Noise and Short-Term Stability Due to FPGA Implementation}, M.Rizzi et el, UFFC-T, 2018\\ $[14]$ \textbf{White Rabbit Clock Synchronization: Ultimate Limits on Close-In Phase Noise and Short-Term Stability Due to FPGA Implementation}, M.Rizzi et al, UFFC-T, 2018\\
~~~~~~~ \url{www.ohwr.org/project/white-rabbit/uploads/253cbfc17d2b43cd445b68348aee0374/Submitted_IEEE.pdf}\\ ~~~~~~~ \url{www.ohwr.org/project/white-rabbit/uploads/253cbfc17d2b43cd445b68348aee0374/Submitted_IEEE.pdf}\\
$[15]$ \textbf{White Rabbit Clock Characteristics}, M. Rizzi et el., ISPCS2016, \url{www.ohwr.org/project/white-rabbit/uploads/2fa1a438446fc6c85b4540faecf1017a/ISPCS2016-WRClockCharacteristics.pdf}\\ $[15]$ \textbf{White Rabbit Clock Characteristics}, M. Rizzi et el., ISPCS2016, \url{www.ohwr.org/project/white-rabbit/uploads/2fa1a438446fc6c85b4540faecf1017a/ISPCS2016-WRClockCharacteristics.pdf}\\
$[16]$ \textbf{WRS Low Jitter Daughterboard:} \url{www.ohwr.org/projects/wrs-low-jitter}\\ $[16]$ \textbf{WRS Low Jitter Daughterboard:} \url{www.ohwr.org/projects/wrs-low-jitter}\\
...@@ -824,7 +824,7 @@ $[23]$ \textbf{IEEE P1588 Working Group: } ...@@ -824,7 +824,7 @@ $[23]$ \textbf{IEEE P1588 Working Group: }
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{itemize}\small \begin{itemize}\small
\item Widely used/evaluated by Time Laboratories\\ \item Widely used/evaluated by Time Laboratories\\
\textcolor{white}{Evaluated by Deutsche Telecom} \textcolor{white}{Evaluated by Deutsche Telekom}
\end{itemize} \end{itemize}
\vspace{0.2cm} \vspace{0.2cm}
\begin{table} \begin{table}
...@@ -859,7 +859,7 @@ $[23]$ \textbf{IEEE P1588 Working Group: } ...@@ -859,7 +859,7 @@ $[23]$ \textbf{IEEE P1588 Working Group: }
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{itemize}\small \begin{itemize}\small
\item Widely used/evaluated by Time Laboratories \item Widely used/evaluated by Time Laboratories
\item Evaluated by Deutsche Telecom \item Evaluated by Deutsche Telekom
\end{itemize} \end{itemize}
\includegraphics<1>[width=1.0\textwidth]{applications/DT.png}\\\tiny \includegraphics<1>[width=1.0\textwidth]{applications/DT.png}\\\tiny
ISPCS keynote \textit{Highly Accurate Time Dissemination \& Network Synchronisation}, Helmut Imlau, Deutsche Telekom ISPCS keynote \textit{Highly Accurate Time Dissemination \& Network Synchronisation}, Helmut Imlau, Deutsche Telekom
...@@ -1115,7 +1115,7 @@ Distribution of magnetic field in CERN accelerators ...@@ -1115,7 +1115,7 @@ Distribution of magnetic field in CERN accelerators
\item Triggered by National Laboratories and RF distribution \item Triggered by National Laboratories and RF distribution
\item Allan deviation (ADEV) from 1e-11 to \textbf{1e-12} over 1~s \item Allan deviation (ADEV) from 1e-11 to \textbf{1e-12} over 1~s
\item Random jitter from 11 to \textbf{1.1~ps RMS} (1~Hz to 100~kHz) \item Random jitter from 11 to \textbf{1.1~ps RMS} (1~Hz to 100~kHz)
\item Ongong work to achieve jitter of \textbf{sub-100~fs RMS} (100~Hz to 20~MHz) \item Ongoing work to achieve jitter of \textbf{sub-100~fs RMS} (100~Hz to 20~MHz)
\end{itemize} \end{itemize}
\item<2-> Compensation of hardware temperature variation \item<2-> Compensation of hardware temperature variation
\begin{itemize}\scriptsize \begin{itemize}\scriptsize
...@@ -1169,7 +1169,7 @@ Distribution of magnetic field in CERN accelerators ...@@ -1169,7 +1169,7 @@ Distribution of magnetic field in CERN accelerators
\item Switch: 8~ps/K [8] \item Switch: 8~ps/K [8]
\item WR-Zen: 4~ps/K [8] \item WR-Zen: 4~ps/K [8]
\end{itemize} \end{itemize}
\item Remedy: active compensation \\(for LHASSO, 50ps over $-10..55^oC$ [7]) \item Remedy: active compensation \\(for LHAASO, 50ps over $-10..55^oC$ [7])
% \item SFP delay dependency on input power, error up to 30ps [2] % \item SFP delay dependency on input power, error up to 30ps [2]
\end{itemize} \end{itemize}
\item<2-> \textbf{Bitslide} -- measurement uncertainty \item<2-> \textbf{Bitslide} -- measurement uncertainty
...@@ -1239,9 +1239,9 @@ Distribution of magnetic field in CERN accelerators ...@@ -1239,9 +1239,9 @@ Distribution of magnetic field in CERN accelerators
% \end{itemize} % \end{itemize}
\end{itemize} \end{itemize}
\item<5-> \textbf{Fiber} -- chromatic dispersion \item<5-> \textbf{Fibre} -- chromatic dispersion
\begin{itemize}\scriptsize \begin{itemize}\scriptsize
\item Linear dependency on fiber temp: \item Linear dependency on fibre temp:
\begin{itemize}\tiny \begin{itemize}\tiny
\item G.652.D at 1310/1490: $-0.2 ~~ps/(K\cdot km)$ [7] \item G.652.D at 1310/1490: $-0.2 ~~ps/(K\cdot km)$ [7]
\item G.652.D at 1310/1490: $-0.12 ps/(K\cdot km)$ [7] \item G.652.D at 1310/1490: $-0.12 ps/(K\cdot km)$ [7]
...@@ -1249,7 +1249,7 @@ Distribution of magnetic field in CERN accelerators ...@@ -1249,7 +1249,7 @@ Distribution of magnetic field in CERN accelerators
\end{itemize} \end{itemize}
\end{itemize} \end{itemize}
\item<6-> Significant for links $>10~km$ \item<6-> Significant for links $>10~km$
\item<7-> Remedy: temp-stabilized laser, accurate and close wavelengths (C21/C23@1560.61/1558.98nm, SKA [8]) \item<7-> Remedy: temp-stabilised laser, accurate and close wavelengths (C21/C23@1560.61/1558.98nm, SKA [8])
\end{itemize} \end{itemize}
\textcolor{white}{dddd\\dddd\\dddd\\dddd} \textcolor{white}{dddd\\dddd\\dddd\\dddd}
\column{0.45\textwidth} \column{0.45\textwidth}
...@@ -1338,7 +1338,7 @@ Distribution of magnetic field in CERN accelerators ...@@ -1338,7 +1338,7 @@ Distribution of magnetic field in CERN accelerators
\item Noisy internal Virtex-6 MMCM PLL \item Noisy internal Virtex-6 MMCM PLL
\item Large phase noise power at 10kHz to 2~MHz \item Large phase noise power at 10kHz to 2~MHz
\item Phase noise above DDMTD Nyquist (1.9~kHz) bandwidth folds back to baseband [14] \item Phase noise above DDMTD Nyquist (1.9~kHz) bandwidth folds back to baseband [14]
\item Remedy: external PLL to synthesize 62.5~MHz from 10MHz (see daughterboard [16]) \item Remedy: external PLL to synthesise 62.5~MHz from 10MHz (see daughterboard [16])
\end{itemize} \end{itemize}
......
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