User Guide

DesignRules:SettingsforSolderStopandCreamFrame
The default value for solder stop is 4 mil, i.e. minimum value is maxi
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mumvalueis4mil.Thepercentvaluehasnoeffectinthiscase.
The value for the cream frame is set to 0, which means that it has the
samedimensionsasthesmd.
If the values are given in percent, in the case of smds and pads of the
form XLongOct or YLongOct the smaller dimension is the significant
one.Thevaluesareconstrainedbyminimumandmaximumvalues.
The value for Cream is given positively, as is Frame, although its effect is
toreducethesizeofthe soldercreammask(creamframe).
The solder cream mask is only generated for SMDs, and is displayed on
layer 31, tCream, or layer 32, bCream. The solder stop mask is drawn in
layers29, tStop,or30, bStop.
Limit determines, together with the hole diameter, whether or not a via
istobecoveredwithsolderstoplacquer.
Example:
Limit = 24: All through-plated holes with diameters up to 24 mil are
lacquered (no solder stop symbol), but vias with larger hole diameters
receiveasolderstopsymbol.Thissettingdoesnotaffectpads!
Misc
Hereyoucanselect/deselectvariouschecks:
Check grid examines whether elements lie precisely on the grid currently
set by the GRID command. This test is not always worthwhile, since in
many cases devices built to both metric and imperial grids are in use at
thesametime.Nocommongridcanbefoundinsuchacase.
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FromSchematictoFinishedBoard