1 ) New pcb files. In the design of the database file, create a new pcb file. Select the file / new menu in the dialog box , select the option to create a new pcb pcb document file in a database created. And a few steps from the schematic to pcb is the same , this is no longer described in detail.
2 ) the planning board . Before drawing pcb diagram , the user of the board should have a preliminary plan , including the three aspects of the setting , are planning to set working level settings, settings and environmental parameters of the circuit board. One of the most important planning setting circuit board comprising a circuit board using the layers , the circuit board structure, size , and package the components mounting position forms the interface , the parameter element is arranged , and the wiring board layer parameters parameters .
3 ) Place the package , modify package properties , place the power connector package.
4 ) layout, build networks. Relational tables according to the network , the establishment of all networks. This is the most critical step , create a connection between all devices.
5 ) Set the wiring rules , the wiring . protel offers two layout modes: automatic and manual routing wiring . protel99se with advanced non- diagonal grid and shape -based auto- routing technology , the use of auto boute / all menus , the wiring and the wiring rules setting parameters . protel99se start automatically for the user 's circuit board wiring . Hand wiring refers pcb designer manual in accordance with guidance in the pre- cable wiring operations on the pcb. For designers , the general principle is that the first wiring automatic routing , and then manually wiring . Generally , pcb will exist after the automatic routing of some unreasonable, such as turning too much wiring , cabling and wiring connections directly through repeated pin and other components . In addition , under certain circumstances the designer needs to put some pads , vias , dimensioning and strings , in order to meet the needs of the actual design. For the above. Designers need to use manual methods to complete the wiring .
6 ) rule checking, saving design .
