| 摘要 |
PURPOSE:To adjust only a sensitivity calibration value of an undesired wave without changing the sensitivity calibration value of a desired value by providing a 2nd opposite position moving device whose moving direction is orthogonal to 1st relative position moving device adjusting the sensitivity calibration value to the desired wave. CONSTITUTION:The titled instrument is provided with a sending antenna sending a high frequency signal of a prescribed level for the sensitivity measurement, an antenna support means 8 supporting the sending antenna 5, a receiver support means 4 supporting a radio receiver 1 being an object, a 1st relative position moving device 3 adjusting the reception sensitivity calibration by moving the means 4 so as to change the relative distance between the antenna 5 and the receiver 1 and a 2nd relative position moving device 7 moving the means 8 in the moving direction orthogonal to the moving direction of the moving device 3. Thus, the 2nd relative position moving device 7 adjusts the sensitivity calibrating value to an undesired wave without changing the sensitivity calibration value to the desired wave. |
