I bought the ADL5243 ADI assessment board, but when I tested the board ，I encountered problems. The board of digital attenuator (DSA) attenuation coefficient does not change when adjusting software, I want to ask my USB programming is out of the question? Should I always connect the board to the computer? Do you need to connect to the other pins in addition to connecting the 5V power to the VDD pin? Need I weld other capacitance or resistance to the board?