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## Abstracts
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Work in progress.
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### Introduction to White Rabbit
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White Rabbit (WR) is an extension of Ethernet which provides determinism
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### WR in action: distributed synchronization concepts and demo
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The presentation will start with a general discussion about distributed
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synchronization concepts using a distribution of a Pulse Per Second
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synchronization concepts using the distribution of a Pulse Per Second
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(PPS) over a WR network as an example. A short showcase of available WR
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devices will follow. The demo will show how to setup a WR network from
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scratch. Starting with a discussion about a needed fiber cabling,
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through a configuration of WR nodes and switches, to an overview about
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the basic diagnostics of a WR network. The talk willend with a short
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demo presenting how the changes of fiber's temperature can affect a
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synchronisation of two nodes (the hot air gun demo).
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scratch. Starting with a discussion about needed fiber cabling, through
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the configuration of WR nodes and switches (introducing some
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newly-developed web-based tools), to an overview of the basic
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diagnostics in a WR network using standard monitoring and expert tools.
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The talk will end with a short demo presenting how changes in fiber
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temperature can affect the synchronisation between two nodes (aka "the
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hot air gun demo").
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### Determinism in WR: priority handling and latency bounds with demo
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... | ... | @@ -145,8 +145,8 @@ This presentation will focus on the WR network operating at CERN for |
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exchanging trigger pulses between a set of geographically distributed
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instruments responsible for beam instability diagnostics in the LHC. The
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system features low\&fixed latency message distribution and can be
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easily tailored to custom requirements. Presentation will be followed by
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a demo of a small trigger distribution network.
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easily tailored to custom requirements. The presentation will be
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followed by a demo of a small trigger distribution network.
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#### Distributes oscilloscopes using WR
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... | ... | @@ -167,10 +167,10 @@ Streamers](https://www.ohwr.org/project/wr-cores/wikis/WR_Streamers) |
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VHDL module. The WR Streamers take advantage of WR's features (i.e.
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synchronization and determinism) to allow data streaming with low and
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fixed latency. This streaming facility is a building brick of a system
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that distributes the value of a magnetic field in CERN accelerators.
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This talk explains the WR Streamers, their integration into your design
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and their applications. The demonstration will illustrate how the WR
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Streamers are used at CERN.
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that distributes the value of the magnetic field in real-time to clients
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in different CERN accelerators. This talk explains the WR Streamers,
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their integration into your design and their applications. The
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demonstration will illustrate how the WR Streamers are used at CERN.
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### Phase-compensated distribution of RF signals using WR (with demo)
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... | ... | @@ -183,10 +183,10 @@ signals. A live demo will follow. |
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### Advanced diagnostics in a WR network
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White Rabbit is an expansion of a regular Ethernet network. The same way
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you can diagnose off-the-shelf Ethernet switches and routers using a
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White Rabbit is an extension of a regular Ethernet network. The same way
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you can diagnose off-the-shelf Ethernet switches and routers using the
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Simple Network Management Protocol (SNMP), you can also diagnose timing
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and data problems in your WR network. In this talk we will describe
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and data problems in your WR network. In this talk we will describe the
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various SNMP objects that are exported by WR switches and WR nodes as
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well as how they can be analysed using Icinga (an open-source SNMP
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manager) to ensure correct operation of the network. Finally, we will
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### How to use the WR PTP Core to make your own WR nodes, advanced concepts
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White Rabbit PTP Core (WRPC) is the main element of every WR node. It is
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an HDL implementation of Gigabit Ethernet MAC including the full White
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Rabbit synchronization stack. This talk will provide a comprehensive
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description of the WRPC and its interfaces. We will present how
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user-defined HDL modules can benefit from the timing information
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provided by the core and how they can use the pipelined Wishbone
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interface for sending application-specific Ethernet frames. We will also
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see, how the WRPC instantiation in your own WR node can be simplified by
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using provided HDL wrappers for officially supported boards and FPGA
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platforms.
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The White Rabbit PTP Core (WRPC) is the main element of every WR node.
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It is an HDL implementation of a Gigabit Ethernet MAC including the full
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White Rabbit synchronization stack. This talk will provide a
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comprehensive description of the WRPC and its interfaces. We will
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present how user-defined HDL modules can benefit from the timing
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information provided by the core and how they can use the pipelined
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Wishbone interface for sending application-specific Ethernet frames. We
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will also see how the WRPC instantiation in your own WR node can be
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simplified by using provided HDL wrappers for officially supported
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boards and FPGA platforms.
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### Calibration (with demo) and remote configuration of WR nodes
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To ensure a sub-nanosecond synchronization, the White Rabbit software
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To ensure sub-nanosecond synchronization, the White Rabbit software
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stack needs to estimate the communication link asymmetry. In this talk
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we will introduce the White Rabbit link delay model to characterize
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various factors that make the Master-to-Slave and Slave-to-Master link
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