| 摘要 |
PURPOSE:To calibrate the phase of a slave equipment accurately from a master equipment arranged apart geographically by allowing the slave equipment to reproduce a reference phase from a reference frequency signal received from the master equipment and to calibrate it based on the phase information. CONSTITUTION:The master equipment 1 is provided with a phase comparator 14 comparing the phase of its own reference frequency signal outputted from a reference frequency generating section 11 with the phase of a signal received from a return transmission line 4 by a return signal reception section 13 and a phase information transmission section 15 sending the phase information outputted from the phase comparator 14 to the slave equipment 2 via a phase transmission line 5 outputted from the phase comparator 14. The slave equipment 2 is provided with a phase ratio control section 25 calibrating the phase outputted from a reference phase reproducing section 22 according to the phase information. Thus, the phase of the equipment arranged at a location apart geographically is calculated by the accuracy of the reference frequency. |
