| 摘要 |
PURPOSE:To achieve an accurate operation test at each specified time by memorizing operation testing data for a seismometer with a read-only-memory controlled with a microprocessor provided on an observation point telemeter. CONSTITUTION:Seismometers 1 are arranged every observation point at the terminal E of a seismic telemeter observation processing system and transmit data to telemeters 4 of an observation center C by way of a telemeter 2 and a circuit 3. The data is analyzed and processed with a computer processing system 5. The observation point telemeters 2 are provided with read-only-memories to memorize operation testing data of the seismometers 1. As a command for operation testing is transmitted from the observation center C at each specified time, testing data are read out from the read-only-memories under the control of a microprocessor and converted into testing signals with a digital- analog converter to be outputted to the seismometers 1. |
