PCB copper-clad rule set __PCB

Safety spacing setting for copper clad

The safe spacing of copper-clad (clearance) is generally twice times the safe spacing of the wiring. But in the absence of copper, for wiring and set the safe spacing of wiring, then in the next copper-clad process, copper-covered safe spacing will also be the default wiring of the safe distance. This is different from the expected result.

A kind of stupid method is in the cloth after the line, the safe distance to expand to the original twice times, and then copper, copper coated after the safe distance back to the wiring of the safe distance, so DRC check will not be an error. This approach can be, but if you want to change the copper, repeat the above steps, a little trouble, the best way is to separate the safety of the copper cover set the rules.

Another option is to add the rules. In the clearance of rule, create a new rules Clearance1 (name can be customized), and then select Advanced (query) in the where the the "the" the "the" and "matches" box, click Query Builder , and then appear in the Building Query from board dialog box, select the default item show all levels in the first row of the dialog box, and select Object Type/operator is in the Drop-down menu under Condition Kind. Select Ploy in the Drop-down menu below condition value on the right, so that the Ispolygon is displayed in Query preview, click OK, and the following is not finished, and the error will be prompted when it is completely saved:

Next, just change the Ispolygon to Inpolygon in the full Query display box, and at the end of the constraints, revise your own copper-clad safety spacing. Some people say that the rule priority of wiring is higher than the priority of copper, copper-clad is also bound to comply with the rules of the safety of wiring, need to be in the safety spacing rules of the wiring to the exception to add copper, the specific approach is in full query on the note not Inpolygon. In fact, this is not necessary, because the priority can be changed, set the main page of the rule to the bottom left corner of the option priorities, the copper-coated safety spacing rules to increase the priority of the safety spacing rules above the wiring, so do not interfere with each other, finished.

The line width setting of copper clad

Copper clad in the selection of hatched and none of the two modes, you will notice that there is a set track width of the place. If you choose the default 8mil, and you copper-clad network in the set line wide range, the smallest line is wider than 8mil, then in the DRC will be an error, at the beginning of time did not notice this detail, each copper DRC have a lot of mistakes.