The power supply, which can output positive and negative voltage synchronously, was realized independence work through preliminary voltage values setting and step-by-step regulation on panel keyboard. 该电源能同步输出正负电压值,通过电源面板键盘对电压值的预置和步进调节实现独立工作,也可通过PC机的虚拟键盘实现远程控制和网络化管理。