Hello Casperites, It has come to the attention of the CASPER group via diligent investigation by Jason Ray and Randy McCullough with NRAO that, under certain conditions, the fastening screws securing the CX4 connecters to the IBOB printed circuit board (PCB) can impinge on a bottom layer power trace causing a short to the grounded CX4 connector housing on the affected traces. This problem will manifest itself as data integrity and reliability issues in systems with gateware designs utilizing the CX4 connectors for any purpose, including but not limited to IBOB-IBOB, IBOBBEE2 and IBOB-Workstation communication using either 10 Gigabit Ethernet or XAUI interface blocks.
For further information on the problem and fix, please visit http://casper.berkeley.edu/papers/Science_Safety_001.pdf - Andrew
