TESTING DEVICE FOR OPERATION CHARACTERISTIC OF COMPONENT USING SERIAL TRANSMISSION

PROBLEM TO BE SOLVED: To test the robustness of a component to frequency dispersion and fluctuation by transmitting clock signals having different frequencies to a transmitter for a binary signal to be multiplexed and a transmitter for a multiplexed binary signal. SOLUTION: A clock generator 9 transmits clock signals CLK2, CLK3 to a transmitter 2 and a transmitter 3, respectively, and the output of the transmitter 2 is inputted to a circuit 4 of multiplexer, further inputted to a data processing circuit 7 and transmitted to a receiver 3 through a circuit 5 of reverse multiplexer. At this time, the clock generator 9, the transmitter and receivers 2, 3 and a link 6 constitute the circuits 4, 5, and the data processing circuit 7 constitutes a component to be tested or a circuit B. The receiver 3 compares the binary signal directly received from the transmitter 2 with the binary signal from the circuit 5. Namely, the influence of frequency dispersion and fluctuation on the component to be tested can be simulated by controlling the different clock signals CLK2, CLK3, and the function failure can be tested.