| 摘要 |
PURPOSE:To transfer the power supply interruption information of a DX signal device to a remote station on an SS line, by giving a battery potential to the SS line normally and interrupting a B line of a relay line when the power supply is interrupted. CONSTITUTION:A contact (a) of a signal transmission relay (not shown) is operated normally, and since a battery is connected to the SS line, a DX relay of the remote station is operative. The transfer of information is executed by monitoring the number of restoring times of the contact (a) with the number of restoring times of the DX relay at the remote station. When a power supply B is interrupted at a DX signal device at the information transmission, the contact (a) and an S relay are restored, the B line is interrupted with a contact (s) of the S relay, and a ground potential is given to the SS line with the restoration of the contact (a). Then the DX relay at the information reception side remains restored and the reception side discriminates that a transmitter has a failure. Thus, the power supply interruption information of the DX signal device is transferred to the remote station. |
