Clocks and oscillators

Grandmaster

In PTP (IEEE 1588), the grandmaster is the highest-quality clock that serves as the time source for the whole domain. The BMCA algorithm selects the grandmaster automatically. It is usually disciplined by GNSS.

A GNSS-disciplined grandmaster keeps its own time to within tens of nanoseconds of UTC when it has a good fix.

← Back to the glossary

What are you looking for?