| 摘要 |
A master unit and a plurality of slave units are connected by way of a communication path. The master unit sends to the slave units timing signals generated by its own cycle signal generator by way of a communication path. The slave units determine the cycle difference and the phase difference between a timing signal generated by its own cycle signal generator and the timing signal sent from the master unit and, in accordance therewith, determine a cycle adjustment amount. The cycle signal generators of the slave units adjust the timing signal cycle based on the cycle adjustment amount.
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