Abstract: Disclosed is a method for automatically detecting and selecting a time correction protocol and a time base, from among many possible protocols, in a master/slave clock system. A “self-teaching” feature is also disclosed, which includes a table stored at the slave clock containing data representative of characteristics, such as the relative frequency and spacing, of each one of numerous different time correction pulses that can be received by the slave clock from the master clock. Then, at a time of time correction, the slave clock selects the protocol most likely being used by the master clock, based on historical data. The time displayed by the slave clock is the then updated to match the time displayed by the master clock.

Abstract: Disclosed is a method for automatically detecting and selecting a time correction protocol and a time base, from among many possible protocols, in a master/slave clock system. A “self-teaching” feature is also disclosed, which includes a table stored at the slave clock containing data representative of characteristics, such as the relative frequency and spacing, of each one of numerous different time correction pulses that can be received by the slave clock from the master clock. Then, at a time of time correction, the slave clock selects the protocol most likely being used by the master clock, based on historical data. The time displayed by the slave clock is the then updated to match the time displayed by the master clock.