cadsoft eagle 4.5 Manual De Usuario
Thermals:
Determines whether pads in the polygon are connected via thermal
symbols, or are completely connected to the copper plane. This also ap-
plies to vias, assuming that the option has been activated in the Design
Rules.
The width of the thermal connectors is calculated as the half of the pad's
The width of the thermal connectors is calculated as the half of the pad's
drill diameter. The width has to be in the limits of a minimum of the
wire width and a maximum of twice the wire width of the polygon.
Don't choose the polygon's width too fine, otherwise the thermal con-
Don't choose the polygon's width too fine, otherwise the thermal con-
nectors won't resist the current load.
Orphans:
Orphans:
Determines if a polygon may contain areas (islands) which are not elec-
trically connected to the polygon's signal.
If Orphans is set Off such un-connected areas won't be drawn.
When drawing a polygon, please take care to ensure that the outline is not
drawn more than once (overlapping) anywhere, and that the polygon out-
line does not cross over itself. It is not possible for EAGLE to compute the
contents of the area in this case.
An error message Signalname contains an invalid polygon! is issued, and
the RATSNEST command is aborted.
If this message appears, the outline of the polygon must be corrected. Other-
wise, manufacturing data cannot be created by the CAM Processor.
The CAM Processor automatically computes the polygons in the layout be-
fore generating its output.
DRC
¾ Checking the Layout and Correcting Er-
rors
The Design Rule Check (DRC) is carried out at the end of the board
design, if not before. If you have not yet specified any Design Rules for
the layout, this is your last opportunity. See the section on Specifying the
Design Rules from page 98.
If the DRC finds errors, an error window opens automatically. This lists
If the DRC finds errors, an error window opens automatically. This lists
all the errors. The window can be opened at any time by means of the
ERRORS command.
If an error in the list is selected, a line points to the corresponding loca-
If an error in the list is selected, a line points to the corresponding loca-
tion. The error is marked. Correct the error in the layout. The DRC er-
ror window remains in the foreground.
Clicking on the Del button will delete the selected error entry. Del all
Clicking on the Del button will delete the selected error entry. Del all
deletes all the error marks from the layout.
The dialog is ended with Close.
The dialog is ended with Close.
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From Schematic to Finished Board