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# White Rabbit Newsletter, May 2017 # White Rabbit Newsletter, May 2017
Quite a lot has happened in the WR scene since the last newsletter. With Quite a lot has happened in the WR scene since the last newsletter. With
[two [two companies](/Switch#commercial-producers) producing switches, WR is
companies](https://www.ohwr.org/project/white-rabbit/wikis/Switch#commercial-producers) now a true multi-vendor solution. We have also seen more open and
producing switches, WR is now a true multi-vendor solution. We have also proprietary hardware [incorporating WR support](/WRCompanies). The [WR
seen more open and proprietary hardware [incorporating WR user list](/WRUsers) keeps getting bigger and bigger. We also saw people
support](https://www.ohwr.org/project/white-rabbit/wikis/WRCompanies). starting to advertise WR-related jobs in the
The [WR user [Netherlands](https://www.ohwr.org/news/44),
list](https://www.ohwr.org/project/white-rabbit/wikis/WRUsers) keeps
getting bigger and bigger. We also saw people starting to advertise
WR-related jobs in the [Netherlands](https://www.ohwr.org/news/44),
[Switzerland](https://www.ohwr.org/news/43) and [Switzerland](https://www.ohwr.org/news/43) and
[Germany](https://www.ohwr.org/news/42). WR was even on [Spanish [Germany](https://www.ohwr.org/news/42). WR was even on [Spanish
TV](https://www.ohwr.org/news/42)\! TV](https://www.ohwr.org/news/42)\!
...@@ -191,8 +188,8 @@ using SFPs with a tunable laser. ...@@ -191,8 +188,8 @@ using SFPs with a tunable laser.
Tools for calibration have been developed. Tools for calibration have been developed.
a) It is planned to produce a batch of "SFP+ Loop Back Modules" a) It is planned to produce a batch of [SFP+ Loop Back
(https://www.ohwr.org/project/white-rabbit/uploads/f6d07a9f48cfbaf3846f0b9b985571e4/SFP__timing_calibration_module.pdf) Modules](https://www.ohwr.org/project/white-rabbit/uploads/f6d07a9f48cfbaf3846f0b9b985571e4/SFP__timing_calibration_module.pdf))
used for absolute calibration. Currently the mechanical housing causes used for absolute calibration. Currently the mechanical housing causes
some issues that prevent us from production. When these issues are some issues that prevent us from production. When these issues are
solved an announcement will follow via the white-rabbit-dev mailing list solved an announcement will follow via the white-rabbit-dev mailing list
...@@ -299,7 +296,7 @@ development of the Peer-2-Peer mechanism for clock propagation, ...@@ -299,7 +296,7 @@ development of the Peer-2-Peer mechanism for clock propagation,
PeerDelay for the delay measurement, the utilization of HSR tags in PeerDelay for the delay measurement, the utilization of HSR tags in
frames, and the Switch-over mechanism developed by CERN to recover from frames, and the Switch-over mechanism developed by CERN to recover from
a node failure. Current progress and more information can be found at a node failure. Current progress and more information can be found at
the OHWR WR-HSR webpage: https://www.ohwr.org/project/wr-hsr/wiki the [OHWR WR-HSR webpage](https://www.ohwr.org/project/wr-hsr/wiki)
### WR upgrading for KM3NeT by Seven Solutions ### WR upgrading for KM3NeT by Seven Solutions
...@@ -320,3 +317,5 @@ links to synchronize, a new monitoring tool, and the possibility to ...@@ -320,3 +317,5 @@ links to synchronize, a new monitoring tool, and the possibility to
start up at least 150 final nodes in parallel with optimized start up start up at least 150 final nodes in parallel with optimized start up
times. times.
-----