[PCB_FORUM] Re: artwork and drill/netlist alignment
- From: "Michael Catrambone" <Michael.Catrambone@xxxxxxxxxx>
- To: <icu-pcb-forum@xxxxxxxxxxxxx>
- Date: Sat, 26 May 2007 00:43:29 +0800
The Gerber data 0,0 is taking from the lower left corner of the database
and the NCDrill and IPC Netlist data is taking from the 0,0 of the
database. You could always adjust your Left X and Lower Y coordinates
under Drawing Parameters to a consistent number on your designs so you
always know what the offset should be. Be careful that you don't move
the Left X and Lower Y so elements in the lower left fall off the
extents because in some cases it will corrupt the design. Just turn
everything on to see what to change the numbers to.
Sincerely,
Michael Catrambone
UTStarcom, Inc.
Chairman
Cadence Designer Network
CDNLive! Worldwide Web Site: http://www.cdnlive.com
Cadence User Community Web Site: http://www.cdnusers.org
-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of William
Billereau
Sent: Friday, May 25, 2007 11:35 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] artwork and drill/netlist alignement
Hello all.
Does anybody know why artworks have an offset from drills and even the
netlist when we load them in cam350?
I have already seen it with the excellon files and then I used to align
drills to the gerber.
But now we are loading an IPC 356A netlist to compare with gerber, and
we can see that gerbers also have an offset from it.
So the error report is consequent...but false of course...
How to make gerber with the same origin than drills and IPC nets?
Wishing we won't have something to calculate job by job...
Thanks in advance and have a nice end of week.
William Billereau
CERN-TS/DEM
PCB Designer
PS. I wrote a little SKILL routine that reports ANTIPAD and REGULAR NULL
definition for vias/pads used in the board.
They are reported as database DRC (eXternally Determined Violation).
If someone is interested...
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