| 摘要 |
PROBLEM TO BE SOLVED: To allow a slave unit side to detect abnormality of the super frame transmission timing of a master unit. SOLUTION: A slave unit judges whether or not synchronization with a super frame transmitted from a master unit is established S1, shifts to the processing of monitoring a super frame reception timing when synchronization with the super frame transmitted from the master unit is established S2, starts counting for measuring the monitoring time of the reception timing set to an EEPROM beforehand by activating a measurement timer together with the start of the processing S3, judges whether or not the monitoring time elapses, and when the monitoring time set to the EEPROM beforehand elapses S4, calculates S5 an error value of the reception timing monitored by the processing and a standard value based on RCR.STD-28 set to the EEPROM beforehand based on the TCXO of the present unit. |
