Arnaud,
Thanks for prompt reply. We are indeed aware of bandwidth issues, the experiment is a burst waveform signal with low rep-rate cycle. To start, we plan to just expand a reference design, such as kc705_fmc116, add the other FMC star, expanding the router and command mux stars as necessary. The system would then acquire a burst of data, up to 64K per channel, the data will then be read in over Ethernet. Are there any obvious pitfalls?