Facebook open source PCIe Timing Card combines atomic clock and off-air GPS reception

Facebook has open-sourced the precision PCIe timing card it created for its servers. It combines frequencies from a miniature atomic clock and GPS receiver, both on the card, with FPGA-based qualification that combines the two. The local clock is there for when satellite signals are not available, or are unreliable – for example during a ...

This story continues at Facebook open source PCIe Timing Card combines atomic clock and off-air GPS reception

Or just read more coverage at Electronics Weekly

from News – Electronics Weekly https://ift.tt/2YleVNe
via Yuichun