... Insurance 250V,1A(delay type) Center frequency 8.2±0.05MHz Scan frequency deviation ±500KHz Modulation frequency 150, 160, 170, 180Hz 2. ... properly, set JP1 on 2&3. 3) Radio frequency output amplitude: adjustment of radio frequency output amplitude relates to the testing gate distance ... earth to TP8. Adjust R23 can change the amplitude of radio frequency output, and TP7 point is the sine wave of 40 ...