It is a system that acquires and stores sensor data, etc., transmits the data to the ground station, and additionally manages operation of the mission equipment.The data acquired by NEXUS is roughly divided into three data, HK data, image data, electric field strength data, and all of which are saved in the C&DH system. It creates FM packets from the stored data and sends it to the ground station. It is also possible to send HK data in real time.