drc clearance errors

Question

Noobie to Eagle trying to layout a simple 12V to 5V board for use in a car with spiky power.

I have laid out the circuit ( see links) and imported the DRU from a board manufacturer.

I have checked the Net Classes definitions.

I still get Clearance errors everywhere, even between pads on same footprint.

I have set the grid down to 6mil and looked at the board and the gaps seem to be larger than the spec.

I need help!!!! Both to fix this problem and to understand what is wrong so I can avoid it in the future.

Thank

Bob Workman

http://members.shaw.ca/bob.workman/power%20supply.brd

http://members.shaw.ca/bob.workman/power%20supply.sch

autodeskguest · Accepted Answer

Am 01.07.2013 03:58, schrieb Bob Workman:

Noobie to Eagle trying to layout a simple 12V to 5V board for use in a
car with spiky power.

I have laid out the circuit ( see links) and imported the DRU from a
board manufacturer.
I have checked the Net Classes definitions.
I still get Clearance errors everywhere, even between pads on same
footprint.
I have set the grid down to 6mil and looked at the board and the gaps
seem to be larger than the spec.

I need help!!!! Both to fix this problem and to understand what is
wrong so I can avoid it in the future.

Thank
Bob Workman

http://members.shaw.ca/bob.workman/power%20supply.brd
http://members.shaw.ca/bob.workman/power%20supply.sch

--
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Your net class is faulty. The width, drill, clearance is given in MIL,

in the second part of net class width, drill and clearance matrix is

given in MM

--

Mit freundlichen Grüßen / With best regards

Joern Paschedag

autodeskguest · Answer

Am 01.07.2013 06:39, schrieb Joern Paschedag:

Am 01.07.2013 03:58, schrieb Bob Workman:

Noobie to Eagle trying to layout a simple 12V to 5V board for use in a
car with spiky power.

I have laid out the circuit ( see links) and imported the DRU from a
board manufacturer.
I have checked the Net Classes definitions.
I still get Clearance errors everywhere, even between pads on same
footprint.
I have set the grid down to 6mil and looked at the board and the gaps
seem to be larger than the spec.

I need help!!!! Both to fix this problem and to understand what is
wrong so I can avoid it in the future.

Thank
Bob Workman

http://members.shaw.ca/bob.workman/power%20supply.brd
http://members.shaw.ca/bob.workman/power%20supply.sch

--
To view any images and attachments in this post, visit:
http://www.element14.com/community/message/81621#81621

Your net class is faulty. The width, drill, clearance is given in MIL,
in the second part of net class width, drill and clearance matrix is
given in MM

Actually I mean the difference between design rules and classes, mm/mil.

--

Mit freundlichen Grüßen / With best regards

Joern Paschedag