Synchronisation pulse supply procedure - derives pulses from time signals of transmitter or from transmitter with very constant frequency, or from auxiliary oscillator

摘要

The pulses are used for data transmission by radio between stations, using time signals transmitted by a time transmitter. Each stations derives synchronisation pulses from the second signals of the time signal transmitter. In case of failure of the time signal transmitter synchronisation pulses are derive from a transmitter with highly constant frequency, which maintains the frequency and phase of synchronisation pulses transmitted by the time signal transmitter. Only in the case of a simultaneous failure of the time signal transmitter and of the constant frequency transmitter are the synchronisation pulses derived from an auxiliary oscillator also maintaining phase and frequency, the latter with lower accuracy.