| 摘要 |
PURPOSE:To improve reliability by storing program data for a test and by checking the operation of a mixing console by using the stored data. CONSTITUTION:A control data signal corresponding to the mixing operation state of each case and program data for a test are stored previously in the storage device 21 of a control center 20. At a field, the control data signals are sent out of the control center 20 successively for respective cases to perform mixing automatically. For a check, a test signal is supplied to each input module 24 and a switching element which corresponds to each couple of an input matrix 27 and output matrix 28 which should obtain an output at a prescribed output 40A is brought under on-off control. The level of the output appearing at the prescribed output terminal 40A is decided at the control center 20 by using an output signal from a level deciding device 29, thereby displaying the decided result of a display device 30. |
