They used a commercial board that implements the Vita 57 bus, which is the standard way to interface with an FPGA [1]. So if they need replacements down the roa

They used a commercial board that implements the Vita 57 bus, which is the standard way to interface with an FPGA [1]. So if they need replacements down the road, they just have to get one that implements the same standard, and standards for industrial equipment tend to stick around for a considerable amount of time. [1] https://en.wikipedia.org/wiki/FPGA_Mezzanine_Card https://en.wikipedia.org/wiki/FPGA_Mezzanine_Card