| 摘要 |
A transmission unit connected to a reception unit via a communication cable. The transmission unit includes: a diagnostic data transmitting section to transmit, to the reception unit via the communication cable, diagnostic data converted into signals under a signal conversion condition for a diagnosis, of which a value of at least one parameter is different from a signal conversion condition for a transmission defined as a data-to-signal conversion condition for transmitting data to the reception unit; and a diagnosing section to diagnose a status of the communication cable on the basis of a diagnostic data error rate measured by the reception unit receiving the diagnostic data. |
