| 摘要 |
PURPOSE:To make a testing device small-sized and available for general use, and elevate its accuracy and workability, by separating a physical function from a logical function, and controlling a program. CONSTITUTION:When a microcomputer 12 of the control circuit 9 is started by operating the keyboard 2 on the operation panel 1, the microcomputer 12 synchronizes with an interruption pulse of normal period, which is generated by the clock interruption circuit 13, and executes a period program stored in the memory 14, in accordance with the sequence. When a signal is set or reset to the register circuit 10 of the control circuit by a task program, it is controlled to release the operation of a trunk relay 5 of the trunk circuit 4, or send out and stop a signal of the signal souce 6, a control signal or a selective signal is sent out to the switchboard, and on the other hand, a control signal and a selective signal which have been received from the switchboard, a selective signal to be sent out to the switchboard, which has been input from the keyboard 2, and the operational condition of the artificial call testing device are displayed on the indicator 3 on the operation panel 1. |
