User Guide

The Design Rules can be saved in a special Design Rules file (*.dru)by
theuseofthe Saveas.. button.
To apply a set of Design Rules to a board, you can drag any dru file of
the Design Rules branch of the tree view in the Control Panel into the
LayoutEditorwindow.
The Load.. button allows any particular set of Design Rules to be loaded
fromafile.
Change can be used to alter the descriptive text for the current parame
-
ter set. The description usually appears in the DRC dialog (File tab), as
can be seen in the foregoing diagram. Rich Text format can be used with
thetext.Youwillfindnotesonthisinthehelpsystem.
Usually one sets the common Design Rules with the Edit/Design Rules
menu first and starts the Design Rule Check when required with the
DRC command. But it is also possible to adjust the Design Rules if you
usetheDRCcommand.
If you open the Design Rules dialog with the menu Edit/Design Rules.. the
Select button will not be shown. In this case OK ends the dialog and saves
theparametersintheboardfile.
If you use the DRC command, the Check button starts the Design Rule
Check.
The Design Rules dialog offers a range of different options that can be
selectedthroughthetabs.Theoptionsinclude:
File ManagetheDesignRules
Layers Numberofcopperlayers,structureofmultilayer
boards,kindandlengthofvias,thicknessofcopperand
isolationlayers
Clearance Distancesbetweenobjectsinthesignallayers
representingsignalsthatmaybedifferentorthesame
Distance Distancesfromtheboardedgeandbetweenholes
Sizes Minimumtrackwidthandholediameter,particularlyfor
microandblindvias
Restring Widthoftheremainingringatpadsand(micro)vias
Shapes ShapesofpadsandSMDs
Supply Thermalandinsulationsymbolsinsupplylayers
Mask Valuesforsolderstopandsoldercreammasks
Misc Additionalchecks
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FromSchematictoFinishedBoard