A master clock is a hardware device that obtains accurate time from a hardware reference and synchronizes slave clocks and time displays. The slave clocks rely on the master clock to display the correct time.
Once set, traditional, unsynchronized clocks drift away from the correct time at differing rates. After a relatively short amount of time, they can all display very different times. Correcting individual clocks can be a very time-consuming process which needs to be carried out at regular intervals.
GPS Master Clocks
Master clocks can use hardware time references, such as the GPS system to obtain very precise time. GPS is accurate to one-second in three hundred million years. Therefore, all time displays and slave clocks can refer to a highly accurate, legally traceable source of time. GPS systems require an antenna that is typically located with a clear view of the sky. Alternatively, where antenna installation is difficult, public internet Network Time Protocol (NTP) servers can be used.
Everyone Works To The Same Time
Many organizations can benefit from synchronized clocks. Staff all work to the same time, therefore meetings can start promptly, classes in