| 摘要 |
PROBLEM TO BE SOLVED: To provide a data recording system in which record times are easily matched when combined data is made of data recorded by a plurality of data recording devices.SOLUTION: A data recording system according to the invention comprises a plurality of data recording devices 10 and 20, the first data recording device 10 in the system includes a first transmission unit 17 for transmitting a first signal, and the second data recording device 20 includes a second reception unit 24 for receiving the first signal transmitted by the first transmission unit and a second transmission unit for transmitting a second signal after the first signal is received. The first data recording device further includes a first reception unit 17 for receiving the second signal transmitted by the second transmission unit, and the first transmission unit transmits a third signal after the second signal is received. The second data recording device obtains a delay time td required for communication between the second data recording device and the first data recording device from time difference between the reception time of the third signal and the transmission time of the second signal, after the third signal is received. |
