Synchronizing method and system

A method for synchronizing a plurality of equipments EQi each comprising a clock Hi adjusted to a quartz-crystal oscillator, said equipments EQi communicating together using a communication protocol, the plurality of equipment being configured to deliver a command signal to a device, comprising at least the following steps for one synchronization cycle:

• in each equipment generating the command signal, computing a value of the difference ΔH between a reference-clock value Hm and the local clock Hi of an equipment, by comparing the value of the clock signal at a given time for the equipment to the value of the clock signal for the reference clock,
• on detecting a phase shift ΔH between the reference-clock value and the value of a local clock,
• when the value of the phase shift ΔH between the local clock and the reference clock corresponds to one refresh cycle of the reference clock Hm, a corrected clock time Hic is defined by repeating a number of the clock signal of given parity if the value of the local clock is early and a corrected clock time is defined by skipping one number of the clock signal of opposite parity to the first parity if the local clock value is late,
• when the value of the phase shift ΔH is higher than one refresh cycle, resetting the reference time,
• then using a corrected value of the clock in each equipment to emit the command signal.