1. Signal return ground is using independent low-impedance for the loop, not chassis or structural frame.

2. Separately arranging the ground wire of strong signal and weak signal, and respectively connecting the ground by one point.

3. The power cord should be routed parallel to the ground. ground by one point.

4. The radiator should be connected to the power supply or shield or protective ground in the board (priority to shield or protection) to reduce radiation interference.

5. Separate digital ground and analog ground, widen the ground wire. hield or protection) to reduce radiation interference

6. For high speed, medium speed and low speed mix, please pay attention to different layout areas e radiation interference
Statement: This post is only the personal view of the author and does not represent the opinions of ALLPCB.com.