| 摘要 |
PURPOSE:To ensure an accurate display of the pass band of the intermediate frequency, by supplying the filter information selected optionally by an intermediate frequency filter to a microprocessor to convert it into the display information with an arithmetic process. CONSTITUTION:An input is supplied to the input port of a microprocessor 1 from a potentiometer 3 of an IF shifting circuit via an A/D converter 2. While the filter information is supplied in the form of an input to another input port of the processor 1 through a selection switch of an IF filter. Thus an arithmetic process is given to the processor 1. The output of the processor 1 is fed to a display 6 from an output port via a display decoder 4 and a display driver 5. |
