After the wiring design is completed, it is necessary to carefully check whether the wiring design meets the rules set by the designer, and also to confirm whether the established rules meet the requirements of the printed board production process. The general inspection has the following aspects:
Line and line, line and component pad, wire and through hole, component pad and through hole, whether the distance between the through hole and the through hole is reasonable, and whether the production requirements are met.
Is the width of the power and ground wires appropriate, and is there a tight coupling between the power supply and the ground (low wave impedance)? Is there a place in the PCB that allows the ground line to be widened?
Whether the best measures are taken for the critical signal lines, such as the shortest length, the added protection line, the input line and the output line are clearly separated.
Whether the analog circuit and the digital circuit part have separate ground lines.
Whether the graphics (such as icons, and markers) added to the PCB will cause a signal short circuit.
Modify some undesired line shapes.