| 摘要 |
<p>PROBLEM TO BE SOLVED: To calibrate a variable attenuator which is provided in each branch path in a short time.SOLUTION: While monotonously changing from a reference value, attenuation amount data outputted from an attenuation amount control section 19 through a second resolution which is more precise than a first resolution in the state where a calibration signal Sin at a predetermined level is given from a signal generator 30 to a test device connection port 11 of a connection apparatus 10 for a portable terminal test, a calibration control device 60 causes a level measuring instrument 40 to measure an output level of a signal outputted from a terminal connection port 13 to be calibrated, acquires characteristics of an attenuation data couple output level and extracts from the acquired characteristics, attenuation amount data with which a difference of output levels becomes the first resolution, as a calibration value.</p> |
