... , which can be selected for using, especially when EAS equipment multi-point installation is difficult for online connection, so as to avoid ... TP2, adjust the potentiometer R14, making the level at TP4 point is 0.7Vp-p sine wave, then re-connect the ... can change the amplitude of radio frequency output, and TP7 point is the sine wave of 40-70 Vp-p. 4 ...