AMPLIFICATION CONTROL DEVICE, TEST SIGNAL GENERATION MODULE, TEST DEVICE, AMPLIFICATION CONTROL METHOD, PROGRAM, AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To make a level of a signal of a frequency component out of an output signal of a variable gain amplifier constant.

SOLUTION: An amplification control device 10 controls a variable gain amplifier 2 which controls an amplification ratio based on an analog control signal, amplifies an analog input signal, and outputs an analog output signal. It is provided with: a component acquisition means 12 which acquires a desired frequency component in a digital output signal by performing the discrete Fourier transform for the digital output signal which is a digitalized signal of the analog output signal by an A/D converter 4; a differencing means 14 which acquires difference between electric power of the frequency component acquired by the component acquisition means 12 and a target value of the electric power of the frequency component; and a digital control signal output means 16 which outputs a digital control signal for controlling the amplification ratio of the variable gain amplifier 2 based on the difference acquired by the differencing means 14. The analog control signal of the amplification control device 10 is an analog value converted from the digital control signal by a D/A converter 6.

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