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How to convert PCB design files into Gerber files correctly.
1:Export the PCB files into Protel,Select File --> CAM Manager
Select the Next after the Output Wizard dialog appears.
Go on Next
In this dialog, be careful to choose Gerber (generates Gerber files), proceed to the Next
Go on Next
2:Units choose Inches & 2:5 format( Most of PCB manufacturers' Exposure machines are in the default 2:5 format and inch system, it's suggested to choose the following units and proportions in order to reduce errors step.)and then Next.
3:Selection of the layer to export, recommended that all the layers be exported(Note :Mirror check Box do not check, because the check output data is mirrored, sometimes lead to the factory to do the board layer upside down!)
Go on Next
4:There are three options int this dialog,Graphic sym, Characte and Size of hole .
Graphic sym
Characte
Size of hole
Suggest Characte in the figure to Letters
The other options are left untouched by default,
Below three dialogs,Please continue Next.
6:NC Drill setup dialog,set the coordinate format and unit of the borehole file,(It better be the same as the one that transferred Gerber(Inches 2:5 Supperss trailing zero ),so that avoide making too much error.
7:Now that the Gerber has been generated, we will export Gerber and select the export path in Tools>Preferences.
