| 摘要 |
PURPOSE:To compare a transmission loss with a standardized value to inspect an optical fiber, by providing a standardized value setting function and a function, where a measured value and the standardized value are compared with each other to discriminate the measured value, besides a function where the transmission loss of the optical fiber is measured. CONSTITUTION:An inspecting device main body 5 consisting of an AD converter 6, a DA converter 7, a microcomputer (muCPU) 8, a memory 9, etc. and measuring modules 2 separated from the main body 5 are provided. A reference optical fiber 15 is connected between measuring modules, and output voltages of light receiving parts of respective measuring modules are stored in the memory 9 successively. Next, the fiber 15 is removed, and an optical fiber 1 to be inspected is connected between measuring modules, and a mode switch 12 is set to the measurement mode. Each time an input is selected, a digital input value to the DA converter 7 which corresponds to this input and is obtained by the reference optical fiber is read out from the memory 9 and is given to the AD converter 6, and the conversion required for decibel display or the like is operated in the muCPU8, and the result is displayed on a display 13. |
