Appendix B. The Gerber File Format

EAGLE’s final goal is to produce a set of Gerber and Excellon files that fully describe the desired circuit. When these files are generated, they can be sent to a fabrication facility that will construct the board.

Gerber files are popular throughout circuit design, but most designers don’t read them directly. Instead, they examine the circuit using a Gerber viewer. Chapter 7, “Generating and Submitting Output Files,” explains how EAGLE’s CAM processor generates Gerber files and how the gerbv application makes it possible to visualize the board design.

This appendix goes deeper than Chapter 7 and takes a close look at the Gerber format itself. This format is complex and most designers don’t need to understand ...

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