输入信号经过电路板进行2DPSK 调制，输出应为初始相位交替变化的正弦波，相位变化规律应符合2DPSK 调制原理。-Input signal through the circuit board 2DPSK modulation, the output should be the initial phase alternating sine wave, the phase variation should be consistent with the principle of 2DPSK mod