Data Sheet

LABCENTER ELECTRONICS LTD.
164
The Gerber / Excellon Output dialogue form
The options in the top section of the dialogue form are self-explanatory but there are some
points of note regarding the rest of the configuration options.
The software attempts to populate the layer set with those layers used on the layout but this
should always be verified. One of the most common problems with manufacture occurs when
the manufacturer is not supplied with the full board information.
The Apply Global Guard Gap option will set the expansion of the resist plot around pads and
vias to the distance specified when this option is checked. This will take effect on all pads and
vias except those which have been manually altered on the layout. Some board manufacturers
prefer to create the resist plot in house and this option could then be used to remove any resist
expansion pre-manufacture. Unless otherwise directed we recommend that you leave this
option unchecked.
The Slotting /Routing Layer option specifies explicitly which layer of the board is to be used for
defining the routing strokes for cutouts and slots. In our case, we have used MECH1 and we
must therefore set this via the selector.