During the debugging of the circuit of the low dead-time single channel analyzer, some problems were found, such as high-frequency signal would produce self-excited oscillation, the output of peak position detection would be delayed and when height of input pulse was higher than the threshold of the upper discriminator that would make a wrong output in the logic circuit. All of these cause the low dead-time single channel analyzer to not work properly. By analyzing the principle of Low dead-time single channel analyzer, some improvements are ma...