4Links at SmallSat in August 2015
4Links was an exhibitor at the SmallSat 2015 conference in Logan, UT, USA from 8th-13th August 2015.
The centrepiece of our display was a demonstration of the proposed ESA N-MaSS Fault Detection, Isolation and Recovery protocol, running on a prototype of our new SpaceWire Satellite Development System. The PXIe chassis accommodated seven LEON processors, seven four-port SpaceWire routers, a virtual power controller, a SpaceWire-to-Ethernet bridge and an RS-422 interface.
These modules were wired into an example of a spacecraft's SpaceWire data-handling network, and used its FDIR facilities to recover automatically from faults such as removed cables, failed routers, and powered-off processors. The display provided live updates on the status of the SpaceWire network and on the active routes that had been enabled by the FDIR algorithms.