Here it describes the sequence of operation of reconstructing a complete Project
The number of steps required to reconstruct a complete project database is determined
by the complexity, structure and contents of imported graphic files. Most complete and successful
reconstruction can be achieved using full set of artworks in Gerber ASCII format because of their
straightforward connection to PCB layout. Import of DXF files are provided mainly for
reconstruction of geometrically complicated board outlines. Much depends on purpose of
reconstruction. In many cases imported data will allow after edition to generate revised set of
artworks without necessity of reconstructing complete Project Database.
Note: No net-list or schematics information will be there but so created simple PCB layout
database allows generating revised set of artworks in Gerber ASCII format as well as NC Drill
Here are a few examples where graphics imports may be used
The via position and thru pad position need to take input from the solder masks layer only in
which the Dcode filter should be applied as per the via and pad requirements.
The via pads and thru pads require information from all the layers except component print
Obtain the required gerber files and for the import process, select Fabrication manager -> File ->
Gerber/ Excellon /DXF/ HPGL Viewer. A file import dialog box will be open to import files as
shown below. Select the Files of type as Gerber ASCII files (*.GBR). Select the required gerber
file. Fig : 1
Click open in the above in the above window top open the Import Parameters dialog as below in
Select the appropriate layer for the layer which is selected for importing. Here Artwork Top layer
is selected. Fig: 3
Note: For Multi layer PCB inner layers can be added by clicking “Add inner Layer” in Layer
tool Bar (Fabrication Graphic viewer and import editor)
Click Accept so that the changes are effected in the Fabrication Manager. In Fabrication
Manager, the board appears as a template.
Board outline may be reconstructed automatically by pointing one of the elements in the polygon.
Other way of reconstruction is by dragging selected vertex of already existing outline and
anchoring it on selected element in the reconstruction template.
Select the vertex of already existing outline and anchor it on the selected element in the
reconstruction template. This action immediately replaces the reconstruction template which is
the final board.
Before reconstructing the components, select Fabrication Manager -> Tools -> Graphic imports->
Select the Active category as Thrupads Position-> Create graphic item (Second function tool) ->
Assign Holes (F2) , Give the required Hole diameter (eg : .0350”) , with some hole category. Fig:8
Then select Fabrication Manager -> Tools -> Reconstruct from graphics -> Reconstruct
components -> Reconstruct components/ Packages from graphics (F1) -> Block select the
required component -> Select Finish reconstruction -> and give the Value for the properties given.
Reverse Engineering of Printed Circuit Boards