Robert:
I have to concur. We define artwork (awk) as all the board layers, the drill file, the aperture
list, fab notes, fab drawing, masks, silkscreens, and thermal relief definitions. If, after
the awk has initially been sent to the board house, we need to make a design change to ANY aspect
of the awk outside the range of what we allow the board house to perform for manufacturability,
we send a whole new awk database at the next rev level. We also instruct the board vendor to
destroy the old data as well. It's true that data is duplicated in this manner of revision.
However, it has been our experience that whatever can go wrong at the board house end, will go
wrong. Keep revision control as close to home as possible and you save time, money, and the
headaches that occur from "What the (choose explitive), I thought we fixed this!!!!!
Wolfe, Robert wrote:
> Just one word of caution, if you have not had any fab or awk related
> problems because of this with your vendors and you clearly specify on
> the fab dwg the situation that not all awk files will be the same rev I
> concur this should be enough to not have a mix up. But every fab vendor
> and MFG Eng I ever talked with will tell you your asking for trouble.
>
> Executone Information Systems, Inc.
> Robert M. Wolfe
>
> -----Original Message-----
> From: Larry Campbell [SMTP:[log in to unmask]]
> Sent: Tuesday, May 26, 1998 11:24 AM
> To: [log in to unmask]
> Subject: Re: [DC] Part number generation. -Reply -Reply
>
> The artwork revision can never be higher than the drill drawing
> revision since the drawing shows the artwork revisions. The
> drawing revision may be higher than the artwork revisions.
>
> Another example:
>
> I have released the initial drawing and artworks at revision A.
> I
> need to make a change that only effects layer 2. My drawing
> will
> go to revision B, stating that layer 2 is changed to revision B.
> However, lets say I need to make a change only to the drill
> drawing and not the artworks. ( I need to modify the notes.)
> The
> drill drawing will change to revision C, layer 2 is still shown
> at
> revision B, and all the other layers are still at revision A.
>
> Hope this helps.
> Larry
>
> >>> Bruce C Rietdorf <[log in to unmask]> 05/26/98
> 10:52am >>>
> Larry Campbell,
>
> I understand your numbering scheme well. Very similar to ours.
>
> Can you expand on what the revision level of the board is?
>
> Do you mark the board revision to the highest artwork revision
> or
> mark it
> per the drill drawing revision?
>
> _________________________________________________
> Bruce Rietdorf
> Raytheon Systems Company
> 1010 Production Road M/S 10-61
> Fort Wayne, IN 46808
> Phone: 219 429-5150 Fax: 219 429-4774
> e-mail: [log in to unmask]
>
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--
Have a Golden Day,
Paul Anderson
[log in to unmask]
http://www.amherst.com/
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