Thomas,
The keepout polygon you are putting into the DSN file is on a non-existent
layer named
"signal".
It seems like a freerouter idiosyncrasy that it accepts this.
Here is the grammar for specctra polygon:
(polygon
<layer_id >
<aperture_width>
{<vertex> }
[(aperture_type [round | square])]
)
Here is what you are outputting:
(keepout "" (polygon signal 0 220980 -125730 232410 -125730
232410 -137160 220980 -137160 220980 -125730))
1) Do you agree this is probably non-standard behaviour on the part of
freerouter? If
not, can you tell me the page number within the specctra spec where this single
layer
approach is explained?
2) Do you find that although this is only a *single* fictitious layer that you
are
outputting, that the keepout is respected on *all* cu layers within freerouter?
There were a couple of user's using this export with the Electra router, is the
reason I
ask. It is important to know when we are relying on non-standard behaviour.
Thanks,
Dick
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