| 摘要 |
PURPOSE:To accurately measure the strength of a high frequency, signal by comparing an output signal of an oscillator oscillated in the same frequency as a reception signal with the reception signal. CONSTITUTION:When a high frequency signal is inputted to an input teminal 1, the frequency infomation from a receiver 2 is stored in a frequency storage device 30 and the amplitude information is stored in a storage circuit 5. An oscillator 4 produces a high frequency signal of a constant power calibrated with the frequency as this frequency information. On the other hand, switchers 7, 8 are operated, the output of the oscillator 4 is connected to the input of the receiver 2, and the amplitude information is stored in a storage circuit 6. The output of the storage circuit 5 is calibrated at a calibration circuit 9 with the output of the circuit 6. |
