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White Rabbit
Commits
0e4095a1
Commit
0e4095a1
authored
Jun 14, 2019
by
Maciej Lipinski
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GermanStockExchange.jpg
figures/applications/GermanStockExchange.jpg
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LAN.jpg
figures/misc/LAN.jpg
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WR-zoo.jpg
figures/misc/WR-zoo.jpg
+0
-0
ieee-1588-ptp-example.jpg
figures/misc/ieee-1588-ptp-example.jpg
+0
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wr_efts_2019.tex
presentations/WR_Maciej_EFTS_2019/wr_efts_2019.tex
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-102
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figures/applications/GermanStockExchange.jpg
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figures/misc/LAN.jpg
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figures/misc/WR-zoo.jpg
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figures/misc/ieee-1588-ptp-example.jpg
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presentations/WR_Maciej_EFTS_2019/wr_efts_2019.tex
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0e4095a1
...
...
@@ -67,9 +67,9 @@
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\title
[White Rabbit\hspace{3em}\insertframenumber/\inserttotalframenumber]
{
White Rabbit
}
\author
{
Javier Serrano
}
\author
{
Maciej Lipi
\'
{
n
}
ski
}
\institute
{
CERN BE-CO
\\
Hardware and Timing section
}
\date
[
28 June 2018]
{
European Frequency and Time Seminar
\\
Besançon, 28 June 2018
}
\date
[
4 July 2018]
{
European Frequency and Time Seminar
\\
Besançon, 4 July 2019
}
\AtBeginSection
[]
{
...
...
@@ -97,89 +97,108 @@
\section
{
Introduction
}
\subsection
{}
%=======================
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
{
What is White Rabbit?
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{columns}
[c]
\column
{
0.8
\textwidth
}
\column
{
0.75
\textwidth
}
\small
% \textcolor{white}{dddd dsaf asd fasd fdsa fads f dsa fdsa f dsaf dsa fdsa f dsaf dsaf fds}
\begin{itemize}
\item
Renovation of accelerator's control and timing
\item
Based on well-known technologies
\item
Open Hardware and Open Software with commercial support
\item
International collaboration
\item
Many users: CERN, GSI, KM3NET, cosmic ray detectors, metrology labs...
\item
<1-> Initiated to renovate accelerator's ctrl
\&
timing
\item
<2-> Based on well-established standards
\begin{itemize}
\footnotesize
\item
<3->Bridged Local Area Network
\textcolor
{
gray
}{
(IEEE 802.1Q)
}
\item
<3->Ethernet
\textcolor
{
gray
}{
(IEEE 802.3)
}
\item
<4->Precision Time Protocol
\textcolor
{
gray
}{
(IEEE 1588)
}
\end{itemize}
\item
<6->Extends standards to meet CERN requirements and provides
\begin{enumerate}
\item
\color
{
blue!90
}{
\textbf
{
Sub-ns synchronization
}}
\item
\color
{
red
}{{
\textbf
{
Deterministic data transfer
}}}
\end{enumerate}
\item
<7-> Open Source with commercial support
\item
<8-> Many users worldwide, inc. metrology labs...
\end{itemize}
\column
{
0.3
\textwidth
}
% \textcolor{white}{dddd dsaf asd fasd fdsa fads f dsa fdsa f dsaf dsa fdsa f dsaf dsaf fds}
% \textcolor{white}{dddd dsaf asd fasd fdsa fads f dsa fdsa f dsaf dsa fdsa f dsaf dsaf fds}
\textcolor
{
white
}{
dddd dsaf asd fasd fdsa fads f dsa fdsa f dsaf dsa fdsa f dsaf dsaf fds
}
\column
{
0.4
\textwidth
}
\begin{center}
\includegraphics
[width=1.0\textwidth]
{
logo/WRlogo.pdf
}
% \includegraphics<1>[width=1.0\textwidth]{additionalForPres/intro-1.jpg}
\includegraphics
<3>[width=1.0
\textwidth
]
{
misc/LAN.jpg
}
\includegraphics
<4>[width=1.0
\textwidth
]
{
misc/ieee-1588-ptp-example.jpg
}
\includegraphics
<5>[width=1.0
\textwidth
]
{
network/WR
_
network-ethernet.pdf
}
\includegraphics
<6->[width=1.0
\textwidth
]
{
network/wr
_
network-enhanced
_
pro.pdf
}
\end{center}
\end{columns}
\end{columns}
\small\pause\pause\pause\pause\pause\pause\pause\pause
\url
{
https://www.ohwr.org/projects/white-rabbit/
}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
{
Open
\textbf
{
and
}
commercially available off-the-shelf
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\includegraphics
[width=1.0\textwidth]
{
misc/WR-zoo.jpg
}
\vspace
{
-1cm
}
\begin{center}
\small
\textbf
{
Companies selling White Rabbit:
}
\url
{
www.ohwr.org/projects/white-rabbit/wiki/wrcompanies
}
\end{center}
\begin{frame}
{
Why we use Open Hardware ?
}
\begin{center}
\includegraphics
[width=.7\textwidth]
{
ohwr/commercial
_
and
_
open.pdf
}
\end{center}
\begin{itemize}
\item
Get a design just the way we want it
\item
Peer review and design re-use
\item
Healthier relationship with companies
\end{itemize}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
{
White Rabbit: an
\emph
{
extension
}
of Ethernet
}
\begin{columns}
[c]
\column
{
.5
\textwidth
}
\begin{itemize}
\item
Standard Ethernet network
\item
Ethernet features (VLAN)
\&
protocols (SNMP)
\end{itemize}
\begin{itemize}
\item
\color
{
Blue
}{
Sub-ns synchronisation
}
\item
\color
{
Red
}{
Guaranteed (by design) upper bound in frame latency
}
\end{itemize}
\column
{
.6
\textwidth
}
\begin{center}
\includegraphics
[height=1.05\textwidth]
{
network/wr
_
network-enhanced
_
pro.pdf
}
\end{center}
\end{columns}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
{
White Rabbit application examples
}
% \small
\footnotesize
\begin{columns}
[c]
\column
{
0.7
\textwidth
}
\begin{itemize}
\item
<1->
\color
<2->
{
black!50
}{
CERN and GSI
}
\item
<2->
\color
<3->
{
black!50
}{
HiSCORE: Gamma
\&
Cosmic-Ray experiment
}
\item
<3->
\color
<4->
{
black!50
}{
The Large High Altitude Air Shower Observatory
}
\item
<4->
\color
<5->
{
black!50
}{
MIKES: Centre for metrology and accreditation
}
\item
<5->
{
KM3NET: European deep-sea neutrino telescope
}
\item
<2->
\color
<3->
{
black!50
}{
The Large High Altitude Air Shower Observatory
}
\item
<3->
\color
<4->
{
black!50
}{
KM3NET: European deep-sea neutrino telescope
}
\item
<4->
\color
<5->
{
black!50
}{
German Stock Exchange
}
\item
<5-> Metrology laboratories
\begin{table}
\tiny
\begin{tabular}
{
| c | c | c | c |
}
\hline
\textbf
{
Time Lab
}&
\textbf
{
Country
}
&
\textbf
{
Link Length
}&
\textbf
{
Time Error
}
\\
\hline
VTT
&
Finland
&
950~km
&
$
\pm
$
2ns
\\
\cline
{
3-4
}
MIKES
&
&
50~km
&
$
<
$
1ns
\\
\hline
VSL
&
Netherlands
&
2x137~km
&
$
\approx
$
8ns
\\
\hline
% & & 25~km & 150ps & 1-2ps@1000s \\ \cline{3-5}
LNE-
&
&
25~km
&
150ps
\\
\cline
{
3-4
}
SYRTE
&
France
&
125~km
&
2.5ns
\\
\cline
{
3-4
}
&
&
4x125~km
&
2.5ns
\\
\hline
NIST
&
USA
&
$
<
$
10~km
&
$
<
$
200ps
\\
\hline
NLP
&
UK
&
2x80~km
&
$
<
$
1ns
\\
\hline
&
&
50~km
&
800ps
$
\pm
$
56ps
\\
\cline
{
3-4
}
INRIM
&
Italy
&
70~km
&
610ps
$
\pm
$
47ps
\\
\hline
% & 400~km & & \\ \hline
\end{tabular}
\end{table}
\end{itemize}
\column
{
0.45
\textwidth
}
\begin{center}
\includegraphics
<1>[width=0.80
\textwidth
]
{
applications/gsiANDcern.pdf
}
\pause
\includegraphics
<2>[width=1
\textwidth
]
{
applications/tunka.pdf
}
\pause
\includegraphics
<3>[width=1
\textwidth
]
{
applications/lhaaso.pdf
}
\pause
\includegraphics
<4>[width=.7
\textwidth
]
{
applications/mikes.pdf
}
\pause
\includegraphics
<5->[width=1
\textwidth
]
{
applications/KM3NeT.pdf
}
\includegraphics
<2>[width=1
\textwidth
]
{
applications/lhaaso.pdf
}
\includegraphics
<3>[width=1
\textwidth
]
{
applications/KM3NeT.pdf
}
\includegraphics
<4>[width=1
\textwidth
]
{
applications/GermanStockExchange.jpg
}
\end{center}
\end{columns}
\pause
{
\small
More WR collaborators:
\url
{
http://www.ohwr.org/projects/white-rabbit/wiki/WRUsers
}}
{
\scriptsize
Users page:
\url
{
http://www.ohwr.org/projects/white-rabbit/wiki/WRUsers
}}
{
\scriptsize
Article:
\textit
{
White Rabbit Applications and Enhancements
}
, M.Lipinski et. al, ISPCS2018
}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
...
...
@@ -187,11 +206,11 @@
\section
{
Technology
}
\subsection
{}
\begin{frame}
{
White Rabbit technology
}
\begin{frame}
{
White Rabbit technology
- sub-ns synchronization
}
\begin{block}
{
Based on
}
\begin{itemize}
\item
Gigabit Ethernet over fibre
\item
IEEE
-1588 p
rotocol
\item
IEEE
1588 Precision Time P
rotocol
\end{itemize}
\end{block}
\pause
...
...
@@ -242,7 +261,7 @@
\end{center}
\end{frame}
\begin{frame}
{
Digital Dual Mixer Time Difference
}{
DDMTD
}
\begin{frame}
{
Digital Dual Mixer Time Difference
(DDMTD)
}
\begin{itemize}
\item
Used for precise phase measurements
...
...
@@ -256,6 +275,31 @@
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
{
SoftPLL
}
\begin{center}
\includegraphics
[width=.9\textwidth]
{
protocol/dmpll
_
diagram-slides.pdf
}
\end{center}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
{
Link delay model
}
\begin{center}
\includegraphics
[width=0.9\textwidth]
{
calibration/link-model.pdf
}
\end{center}
\begin{itemize}
\item
static hardware delays:
$
\Delta
_{
TXM
}$
,
$
\Delta
_{
RXM
}$
,
$
\Delta
_{
TXS
}$
,
$
\Delta
_{
RXS
}$
\item
semi-static hardware delays:
$
\epsilon
_
M
$
,
$
\epsilon
_
S
$
\item
fiber asymmetry coefficient:
$
\alpha
=
\frac
{
\delta
_{
MS
}
-
\delta
_{
SM
}}{
\delta
_{
SM
}}$
\end{itemize}
\pause
\begin{block}
{}
Calibration procedure to find
$
\Delta
_{
TXM
}$
,
$
\Delta
_{
RXM
}$
,
$
\Delta
_{
TXS
}$
,
$
\Delta
_{
RXS
}$
and
$
\alpha
$
.
\end{block}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
{
Link delay model
}
\begin{center}
\includegraphics
[width=0.9\textwidth]
{
calibration/link-model.pdf
}
...
...
@@ -263,7 +307,7 @@
\begin{itemize}
\item
static hardware delays:
$
\Delta
_{
TXM
}$
,
$
\Delta
_{
RXM
}$
,
$
\Delta
_{
TXS
}$
,
$
\Delta
_{
RXS
}$
\item
semi-static hardware delays:
$
\epsilon
_
M
$
,
$
\epsilon
_
S
$
\item
fib
re
asymmetry coefficient:
$
\alpha
=
\frac
{
\delta
_{
MS
}
-
\delta
_{
SM
}}{
\delta
_{
SM
}}$
\item
fib
er
asymmetry coefficient:
$
\alpha
=
\frac
{
\delta
_{
MS
}
-
\delta
_{
SM
}}{
\delta
_{
SM
}}$
\end{itemize}
\pause
\begin{block}
{}
...
...
@@ -279,10 +323,10 @@
\begin{frame}
{
Typical WR network
}
\begin{center}
\includegraphics
[width=.5\textwidth]
{
network/wr
_
network-enhanced
_
pro.pdf
}
\includegraphics
[width=.
4
5\textwidth]
{
network/wr
_
network-enhanced
_
pro.pdf
}
\end{center}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
[t,fragile]
{
White Rabbit Switch
}
\begin{center}
\includegraphics
[width=\textwidth]
{
switch/wrSwitch
_
v3
_
3.jpg
}
...
...
@@ -290,11 +334,15 @@
\item
Central element of WR network
\item
18 port gigabit Ethernet switch with WR features
\item
Optical transceivers: up to 10km, single-mode fiber
\item
Fully open
design, commercially available
\item
Fully open
, commercially available from 4 companies
\end{itemize}
\end{center}
\begin{center}
NOTE: Work started on a new switch with 10 gigabit Ethernet
\end{center}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
{
Simplified block diagram of the hardware
}
\vspace
{
-0.3cm
}
\begin{center}
...
...
@@ -302,24 +350,18 @@
\end{center}
\end{frame}
\begin{frame}
{
Simplified block diagram of the gateware
}
\begin{center}
\begin{adjustwidth}
{
-1.5em
}{
-1.5em
}
\includegraphics
[width=1.1\textwidth]
{
switch/switch
_
hdl
_
simple.pdf
}
\end{adjustwidth}
\end{center}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
{
WR Node: SPEC board
}
\begin{center}
\includegraphics
[width=7cm]
{
node/spec.jpg
}
\begin{frame}
{
WR Node: carrier board + FMC
}
\vspace
{
-0.5cm
}
\begin{center}
\includegraphics
[width=10cm]
{
node/shw
_
kit2.png
}
\end{center}
\begin{columns}
[c]
\column
{
.01
\textwidth
}
\column
{
.98
\textwidth
}
\vspace
{
-0.5cm
}
\begin{block}
{
FMC-based Hardware Kit
}
\begin{itemize}
% \item Carrier boards in PCI-Express, VME, PXIe
...
...
@@ -332,13 +374,13 @@
\column
{
.01
\textwidth
}
\end{columns}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
{
White Rabbit PTP Core
}
\begin{center}
\includegraphics
[width=\text
width]
{
node/wrpc
_
inside-v3-0.pdf
}
\includegraphics
[width=\text
height]
{
node/wrNode.jpg
}
\end{center}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\section
{
Performance
}
\subsection
{}
...
...
@@ -355,32 +397,58 @@
\begin{center}
\includegraphics
[height=6.0cm]
{
measurements/meas
_
results2.pdf
}
\end{center}
\begin{center}
\scriptsize
Reported in 2011:
\textit
{
"White Rabbit: a PTP application for robust sub-nanosecond synchronization
}
-- M. Lipinski et al, ISPCS2011
\end{center}
\end{frame}
\frame
{
\frametitle
{
An aside: PLL block diagram
}
\includegraphics
[width=\textwidth]
{
misc/pll
_
model.pdf
}
}
\frame
{
\frametitle
{
An aside: PLL transfer functions
}
\begin{block}
{
Total output phase spectrum
}
$
\Phi
_
o
(
s
)
=
H
(
s
)
\cdot
\Phi
_
i
(
s
)
+
E
(
s
)
\cdot
\Phi
_
n
(
s
)
$
\end{block}
\begin{block}
{
System transfer function (low pass)
}
$
H
(
s
)
=
\frac
{
K
_{
VCO
}
K
_
d F
(
s
)
}{
s
+
K
_{
VCO
}
K
_
d F
(
s
)
}
$
\end{block}
\begin{block}
{
Error transfer function (high pass)
}
$
E
(
s
)
=
1
-
H
(
s
)
=
\frac
{
s
}{
s
+
K
_{
VCO
}
K
_
d F
(
s
)
}
$
\end{block}
}
\frame
{
\frametitle
{
An aside: jitter optimisation
}
\includegraphics
[height=0.7\textwidth]
{
misc/pll
_
psd.pdf
}
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\subsection
{}
\begin{frame}
{
Performance Enhancements
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{itemize}
\footnotesize
\item
<1-> Compensation of hardware temperature variation
\begin{itemize}
\scriptsize
\item
Triggered by cosmic ray detectors
\item
Active correction of hardware temperature variation
\item
Pk-pk variation from 700 ps to
\textbf
{$
<
$
150 ps with sdev
$
<
$
50ps (-10 to 50
$^
o
$
C)
}
\end{itemize}
\item
<2-> Link asymmetry correction
\begin{itemize}
\scriptsize
\item
Triggered by radio telescope (Square Kilometre Array)
\item
At 1310/1490nm, temp variation -0.12 ps/km/K (3ns for 80km over 50
$^
o
$
C)
\item
\textbf
{
Sub-ns for 80km over 50
$^
o
$
C
}
using DWDM SFP on ITU channels C21/C22 (1560.61/1558.98 nm)
\end{itemize}
\item
<3-> Absolute calibration
\begin{itemize}
\scriptsize
\item
Triggered by
\item
\item
\end{itemize}
\item
<4-> Long-haul link
\begin{itemize}
\scriptsize
\item
Triggered by National Time Labs and Radio Telescope
\item
\textbf
{
Sub-ns
}
is achievable on links on
\textbf
{
up to 80km
}
\item
\textbf
{
Ns on 137km
}
bidirectional
\&
\textbf
{$
\pm
$
2.5ns on 950km
}
unidirectional links
\end{itemize}
\item
<5-> Jitter and clock stability (next slide)
\end{itemize}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\subsection
{}
\begin{frame}
{
Performance Enhancements
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{itemize}
\scriptsize
\item
Triggered by National Laboratories and RF distribution
\item
Allan deviation (ADEV) from 1e-11 to
\textbf
{
1e-12
}
over 1s
\item
Random jitter from 11 to
\textbf
{
1.1ps RMS
}
(1 Hz to 100kHz)
\item
Ongong work to achieve jitter of
\textbf
{
sub-100fs RMS
}
(100Hz to 20MHz)
\end{itemize}
\end{frame}
\begin{frame}
{
Test setup for 10MHz switch output
}
\begin{center}
\includegraphics
[width=\textwidth]
{
measurements/WRSlowJitter/rsz
_
experimental
_
setup.png
}
...
...
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