Four-channel programmable DC power supply is a new generation of high-quality programmable linear DC power supply. All four channels can independently adjust voltage and current. This series of products is equipped with RS232 communication interface, which has the characteristics of desktop and system type, and can be arbitrarily matched with other instruments , integrated into a test system with special functions to meet the measurement requirements in different occasions, and the host computer program can be edited through the communication protocol, which brings great convenience to the user's use. It is a replacement product of ordinary programmable power supplies. price-performance advantage.