| 摘要 |
PURPOSE:To check the propriety of installation environment of a 'KARAOKE' orchestration without lyres terminal equipment very easily by connecting the verification device and the 'KARAOKE' terminal equipment with two lines and echoing back a data of the verification device so as to verify the coincidence between an original data and an up-loaded data. CONSTITUTION:The verification device 1 and the 'KARAOKE' terminal equipment 2 are connected by two input output lines 4, 5, and a start switch 11 is depressed after a power supply is supplied to the both. A terminal equipment CPU 14 adds a specific numeral to an original data inputted serially and outputs its processing data to the verification device 1. Then the CPU 7 compares the original data in a verification ROM 6 with a data resulting from subtracting a specific numeral from the echo-back processing data, and gives no output to a warning light 8 when they are coincident and gives 1-bit output to the warning light 8 when they are dissident conversely to light the warning light 8 thereby indicating it that there is any problem in the electric environment of the lines 4, 5. |
