Commit 114f1aa4 authored by Javier Serrano's avatar Javier Serrano

Spell check

parent 101d5c2e
......@@ -491,7 +491,7 @@
\end{frame}
\begin{frame}{WR time \& frequency tranfser: state of the art}
\begin{frame}{WR time \& frequency transfer: state of the art}
\begin{center}
\includegraphics[width=0.8\textwidth]{measurements//RF-ertm_clka_100mhz_ocxo_250m_out-v2.png}
......@@ -541,22 +541,22 @@
\begin{frame}{White Rabbit Switch firmware v6.0}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\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:
\begin{itemize}\scriptsize
\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 Port mirroring to include CPU-originated traffic
\item Leap-second file handling and updating
% \item Kerberos for authentication
\item Reorganized dot-config, more PTP parameters exposed
\item PPSi reorganization to prepare for IEEE1588 HA profile
\item Reorganised dot-config, more PTP parameters exposed
\item PPSi reorganisation to prepare for IEEE1588 HA profile
\item PPSi compatibility with standard PTP improved (BMCA fixed)
\end{itemize}
\item NOTE:
\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
\end{itemize}
\end{itemize}
......@@ -611,7 +611,7 @@
\item FPGA Zynq Ultrascale+ MPSoC ZU17 \\
GTH to front panel, GTY to expansion board
\item Extension board (holdover, 25Gbps)
\item Price-optimized for commercialisation
\item Price-optimised for commercialisation
% \begin{itemize}\scriptsize
% \item Inputs from WR community
% \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
$[10]$ \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}\\
$[12]$ \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}\\
$[14]$ \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}\\
$[15]$ \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}\\
......@@ -824,7 +824,7 @@ $[23]$ \textbf{IEEE P1588 Working Group: }
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{itemize}\small
\item Widely used/evaluated by Time Laboratories\\
\textcolor{white}{Evaluated by Deutsche Telecom}
\textcolor{white}{Evaluated by Deutsche Telekom}
\end{itemize}
\vspace{0.2cm}
\begin{table}
......@@ -859,7 +859,7 @@ $[23]$ \textbf{IEEE P1588 Working Group: }
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{itemize}\small
\item Widely used/evaluated by Time Laboratories
\item Evaluated by Deutsche Telecom
\item Evaluated by Deutsche Telekom
\end{itemize}
\includegraphics<1>[width=1.0\textwidth]{applications/DT.png}\\\tiny
ISPCS keynote \textit{Highly Accurate Time Dissemination \& Network Synchronisation}, Helmut Imlau, Deutsche Telekom
......@@ -1115,7 +1115,7 @@ Distribution of magnetic field in CERN accelerators
\item Triggered by National Laboratories and RF distribution
\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 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}
\item<2-> Compensation of hardware temperature variation
\begin{itemize}\scriptsize
......@@ -1169,7 +1169,7 @@ Distribution of magnetic field in CERN accelerators
\item Switch: 8~ps/K [8]
\item WR-Zen: 4~ps/K [8]
\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]
\end{itemize}
\item<2-> \textbf{Bitslide} -- measurement uncertainty
......@@ -1239,9 +1239,9 @@ Distribution of magnetic field in CERN accelerators
% \end{itemize}
\end{itemize}
\item<5-> \textbf{Fiber} -- chromatic dispersion
\item<5-> \textbf{Fibre} -- chromatic dispersion
\begin{itemize}\scriptsize
\item Linear dependency on fiber temp:
\item Linear dependency on fibre temp:
\begin{itemize}\tiny
\item G.652.D at 1310/1490: $-0.2 ~~ps/(K\cdot km)$ [7]
\item G.652.D at 1310/1490: $-0.12 ps/(K\cdot km)$ [7]
......@@ -1249,7 +1249,7 @@ Distribution of magnetic field in CERN accelerators
\end{itemize}
\end{itemize}
\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}
\textcolor{white}{dddd\\dddd\\dddd\\dddd}
\column{0.45\textwidth}
......@@ -1338,7 +1338,7 @@ Distribution of magnetic field in CERN accelerators
\item Noisy internal Virtex-6 MMCM PLL
\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 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}
......
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