| 摘要 |
PURPOSE:To adjust a detector circuit and an intermediate frequency filter section to an optimum point by supplying an output signal of a front end circuit to the detector circuit through a passing circuit of an intermediate frequency filter section at the adjustment. CONSTITUTION:Switching means 5, 6 bypassing an intermediate frequency filter section 2b are provided on an FM receiver 2, a measuring high frequency signal at the adjustment of the FM receiver 2 is applied to the input side and the output signal of the FM receiver is fed to a distortion meter 3. Then a detector circuit 2d is adjusted so as to bypass the intermediate frequency filter section 2b and then the intermediate frequency filter section 2b is adjusted. Then the output signal of the front end circuit 2a is fed to the detector circuit 2d without being fed to the intermediate frequency filter section 2b at the adjustment of the detector circuit 2d. Thus, the adjustment of the center frequency of the detector circuit 2d itself and the correction of the linearity are best implemented and the intermediate frequency filter section 2b and the entire receiver are adjusted to the optimum point. |
