Creating a ground plane

Harry H. Arends wrote:

"Morten Leikvoll" <mleikvol@yahoo.nospam> schreef in bericht

news:hj9ial$81r$1@cheetah.cadsoft.de...

 

"Harry H. Arends" <info@time-tech.eu> wrote in message

news:hj9dsa$hon$1@cheetah.cadsoft.de...

That works, but where do I determinate the distance between the

polygon and its surrounding tracks and pads.

If I draw a polygon around text will it leave that area not filled?

 

Global settings is in the DRC window (clearance tab, wire-via/

wire-wire number (Polygon is a wire-fill)). Rerun ratsnest after

changing DRC settings.

If you need a bigger clearance for a single polygon, look in the

polygon properties. Here you can select isolate, but it has to be

greater than DRC clearance setting, orelse DRC settings will be used.

Read help/manual a bit on polygons. There are other issues you need to

know about if you have overlapping polygons, and wire width of

polygons also matter in how it is filled.

 

Next problem, I have text on the bottom where the ground plane should come.

How can I create a clear rectangle around that text. If I create a poly

around the board the text is still there but completely enclosed.

It depends on what layer you put the text in and how your CAM job

outputs.    If the layer that the text is in is output as part of the

bottom silkscreen then it will not interfere w/ the pour since the

silkscreen will be printed on top of the metalization.

If you are trying to put text into the same layer as the ground pour

then the letters in the text will automatically be isolated from the

plane just like vias, pads, etc.

Harry H. Arends wrote:

"Morten Leikvoll" <mleikvol@yahoo.nospam> schreef in bericht

news:hj9ial$81r$1@cheetah.cadsoft.de...

 

"Harry H. Arends" <info@time-tech.eu> wrote in message

news:hj9dsa$hon$1@cheetah.cadsoft.de...

That works, but where do I determinate the distance between the

polygon and its surrounding tracks and pads.

If I draw a polygon around text will it leave that area not filled?

 

Global settings is in the DRC window (clearance tab, wire-via/

wire-wire number (Polygon is a wire-fill)). Rerun ratsnest after

changing DRC settings.

If you need a bigger clearance for a single polygon, look in the

polygon properties. Here you can select isolate, but it has to be

greater than DRC clearance setting, orelse DRC settings will be used.

Read help/manual a bit on polygons. There are other issues you need to

know about if you have overlapping polygons, and wire width of

polygons also matter in how it is filled.

 

Next problem, I have text on the bottom where the ground plane should come.

How can I create a clear rectangle around that text. If I create a poly

around the board the text is still there but completely enclosed.

It depends on what layer you put the text in and how your CAM job

outputs.    If the layer that the text is in is output as part of the

bottom silkscreen then it will not interfere w/ the pour since the

silkscreen will be printed on top of the metalization.

If you are trying to put text into the same layer as the ground pour

then the letters in the text will automatically be isolated from the

plane just like vias, pads, etc.