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Before wiring, it is generally necessary to set the wiring rules. The general settings have the following items. Now take the settings in Prote1 as an example to briefly introduce.
(1) Safety clearance setting.
Setting the safety distance corresponds to the Clearance CONstraint item in Routing, which specifies the distance that must be maintained between the traces, pads, and vias of different networks on the PCB. Generally, the safety distance of PCB can be set to 0.254mm, the empty PCB board can be set to 0.3mm, and the denser patch PCB board can be set to 0.2~0.22mm.
(2) Wiring level and direction setting.
The routing layer and direction correspond to the Routing Layers item in Routing. Here you can set the routing layer used and the main routing direction of each layer. Please note that the single-sided PCB board of the patch only uses the top layer, and the single-sided PCB board of the in-line type only uses the bottom layer, but the power layer of the multi-layer PCB board is not set here.
(3) The setting of the via shape.
The shape of the via corresponds to the Routing Via Style item in Routing. It specifies the minimum, maximum, and preferred values of the inner and outer diameters of the vias that are automatically generated during manual and automatic routing. The preferred value is the most important.
(4) The setting of trace line width.
The trace width corresponds to the Width Constraint item in Routing. It specifies the width of the trace during manual and automatic routing. The preference for the entire PCB board range is 0.2～0.6mm. In addition, add some network or network group Net Class line width settings, such as ground wire power line, AC power input line, power output line, power group, etc. can be defined in Design-NetlistManager in advance. The ground wire is generally 1mm wide, and various power wires are generally 0.5~1mm.
The above is the introduction to the PCB wiring rule setting. Ipcb is also provided to PCB manufacturers and PCB manufacturing technology.
