PCB Circuit Card Reverse Engineering

PCB Circuit Card Reverse Engineering is a kind of technique to help engineer extract schematic, gerber file and layout drawing from exisiting electronic PCB board, then use these documents to recovery obselete PCB board;

The library window of PCB Circuit Card Reverse Engineering makes loading elements (or even partial layouts) easy. Just click the appropriate library from the list on the left. A list of its elements then appears on the right.

Select an element from the list by clicking on its description. Selecting an element from the library will also automatically copy the element into the active buffer, then invoke the Buffer tool so you can paste it to the layout.

Elements in the old library should be taken with a grain of salt (i.e. check them carefully before using). The old library names all begin with ~ so you can easily distinguish between the old and new libraries.

All of the elements in the new library should be thoroughly vetted, so you can use them with confidence. The new libraries are stored simply as directories full of element files, so making additions to the new library is easy since there is no need to learn m4. For details on the old libraries from PCB assembly card Reverse engineering.

The netlist window is very similar to the library window. On the left is a list of all of the nets, on the right is the list of connections belonging to the chosen net. The chosen net is highlighted in the list and also shown on the second line of the window in red.

If the net name has a star to the left of it then it is “disabled”. A disabled net is treated as if it were not in the net list. This is useful, for example, if you plan to use a ground plane and don’t want the ground net showing up in the rat’s nest. You can enable/disable individual nets by double-clicking the net name. If you want to enable or disable all nets at once, there are two buttons at the top of the netlist window.

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