1. Operation procedure: (1) Preparation before use 1) Please make sure the trainer is placed in a stable place. 2) Connect the power cord: Plug one end of the power cord provided with the trainer into the instrument's power connector and the other end into a standard, well-grounded power outlet. 3) Turn on the power switch, the apparatus starts working and the system enters the welcome interface. After the system self-test, it enters the default state interface. (2) Adjusting the instrument 1) Adjusting the stand: the user adjusts the height and length of the stand to the desired position, then releases the switch and puts down the fixing feet to fix the instrument.