The Spider-HUB Ethernet switch made by Crystal Instruments 
supports the latest IEEE 1588v2 technology. The Spider-HUB 
guarantees time-stamping accuracy within 50 nanoseconds 
and can be configured for 1588v2 Master, Boundary Clock, and 
Transparent Clock functionality. Accurate phase match between 
all measurement channels across the modules are guaranteed. In 
a Spider-80Xi chassis the Spider-HUB is installed internally.