Rubidium atomic clock oscillator upgrades improve holdover accuracy and saves you valuable time. The standard SyncServer is equipped with a temperature compensated crystal oscillator (TCXO) that keeps the server accurate to nanoseconds when tracking GPS. However, if the GPS signal is lost, thereby placing the server in holdover, the TCXO will soon drift away from perfect. Upgrading the oscillator improves the holdover accuracy significantly.
Rubidium holdover accuracy is 3 to 25 microseconds per day. The value of the upgraded oscillator is that if the GPS signal is lost the SyncServer can continue to serve very accurate NTP time. This provides IT staff plenty of time to correct the problem with no degradation or disruption in network time synchronization accuracy.