hi billy, info on copper and optical cables we've tested is at: https://casper.berkeley.edu/wiki/Equipment_Cables
virtex2 fpga's (ibob, bee2) do not meet 10GbeCX4 specifications, but virtex5 fpga's (roach) does meet the 10GbeX4 spec, so 5 meter CX4 cables should work. the longest cable we've used is 3 meters. if you want to go longer than 5 meters, there are several fiber optic cables you can use, with optical transceivers built into the CX4 connectors. matt dexter is the expert here. best wishes, dan On Sun, Mar 4, 2012 at 9:07 AM, Barott, William Chauncey <[email protected]>wrote: > Hi all,**** > > ** ** > > Are there any cable length considerations for the ROACH? The BEE2s had > some limitations of not playing well > 2m copper CX4 cables (discussed in > past threads). I can't find any threads on similar issues with the ROACH - > does that mean there are none? What lengths are folks successfully using > for copper XAUI and/or 10GbE?**** > > ** ** > > Billy**** >
