随着核物理实验技术的不断发展，传统模拟电子学获取系统已经逐渐被数字化采集系统所取代. 北大核物理与核技术教学实验室引进了多套桌面式、四通道的Pixie-Net数字化仪，并尝试用于教学实验. 以NaI(Tl)探测器为例，本文详细介绍了Pixie-Net 数字化仪相比于传统电子学的优势以及能量测量原理，并详细测试了各参数对NaI(Tl)探测器能量分辨率的影响. Pixie-Net 数字化仪采用最佳参数时，得到的能量分辨率优于传统电子学在最佳参数时的结果. 

With the development of nuclear physics experiment technology, the acquisition system using traditional analog electronics has been gradually replaced by the digital acquisition system. Many sets of Pixie-Net digitizers have been introduced into the teaching laboratory of nuclear physics and nuclear technology at Peking University. We tried to use them in teaching experiments instead of the traditional acquisition system. Taking the NaI(Tl) detector as an example, the advantages of pixie-net digitizer (compared with traditional electronics) and the principle of its energy measurement are reported. The influence of various parameters in setting file on the energy resolution of NaI(Tl) detector is tested carefully. The energy resolution of NaI(Tl) detector when using Pixie-Net digitizer with the best parameters is better than that using the traditional electronics.