| 摘要 |
PROBLEM TO BE SOLVED: To provide an on-vehicle testing apparatus for ETC capable of simplifying and shortening the required time for the performance measuring test of an ETC vehicle-mounted device, without having to change the setting of the vehicle-mounted device in the state of actually performing a communication. SOLUTION: This on-vehicle testing apparatus for ETC comprises a communication sequence testing means for monitoring the advancement of the transmitting and receiving sequence of the signals while updating the signals to be transmitted to and received from a vehicle-mounted device side, according to the advancement of the transmission and receiving; an output signal measurement means for measuring the frequency and level of the received signals, by receiving the signals received from the vehicle-mounted device; a level control means for outputting the transmitted signals level-regulated according to level control signals; and a control means for controlling these means. |
