White Rabbit Switch supplied by OPNT
From now on the 18-port White Rabbit switch can also be ordered from
OPNT B.V . This project page describes the changes
/ additions OPNT has made.
The changes fall into two categories: replace existing components due to
obsolescence and making changes to allow easy installation of a
Low-jitter-daughterboard
. The Low-jitter-daughterboard can be ordered from OPNT B.V.
SCB3.4.1
The image below shows the component layout of the
SCB3.4.1
Compared to the SCB3.4 J3 (the black connector on the right) is always fitted and J5 & J6 are added. J6 is a u.FL connector to which the clock output of the Low-jitter-daughterboard can be connected. J5 is used to select between the existing oscillator or the Low-jitter-daughterboard.
A less visible change is the replacement of obsolete components. The biggest change is using a different NAND flash. Also the ethernet connector is soldered to the board so it cannot come lose.
Backplane (carrier board) 3.3.1
The backplane has been modified so the fans are always on (in the original backplane 3.3 design the fans are controlled by software). This keeps the hardware cooled in all circumstances. Also more sturdy SFP cages have been used.
Low-jitter-daughterboard
A Low-jitter-daughterboard gives a significant improvement when it comes to the jitter performance of the White Rabbit switch.
Binaries
As a convenience the following pre-packaged firmware files are
available:
Regular firmware v5.0.1 with support for
SCB3.4.1
Low-jitter-daughterboard firmware v5.0.1 with support for
SCB3.4.1
Patches
Linux kernel and Barebox patches
Documents
Detailed hardware and software changes
Commercial producers
General question about project
Status
Date | Event |
05-11-2018 | Device commercially available. |
22 November 2018