(1)分频器如何调整?首先将测试开关放在1,工作开关放在3,观察萤光屏上波形,调节20KC 电位器,使分频比为1/5;然后,测试开关放在2,工作开关放在2,观察波形,调节4KC 电位器,使分频比为1/5;再将测试开关放在3,工作开关放在1,观察波形,调节800C 电位器,使分频比为1/5; (1) how to adjust the divider? First of all, the test switch on the 1, the working switch on the 3, observe the waveform on the screen, adjust the 20KC potentiometer, the division ratio of 1/5; 2, the work switch on the 2, observe the waveform, adjust the 4KC potentiometer, so that the frequency ratio of 1/5; then test the switch on the 3, the work switch on the 1, observe the waveform, adjust the 800C potentiometer, Ratio of 1/5;