[PCB_FORUM] Re: Metric to English - English to Metric
- From: chris.ball@xxxxxxxxx
- To: icu-pcb-forum@xxxxxxxxxxxxx
- Date: Wed, 24 Aug 2005 15:21:43 -0400
Hiya George-
So are you being pressured to switch to Metric? Sounds like it would
simplify things in the long run, aid in 'globalizing' libraries and
standard rules, and besides, I'll be all jealous if you get to stay using
the units you think in............ 8-}
george.h.patrick@xxxxxxxxx
k.com To:
icu-pcb-forum@xxxxxxxxxxxxx
Sent by: cc:
icu-pcb-forum-bounce@freel Subject:
[PCB_FORUM] Re: Metric to
ists.org English - English to
Metric
08/24/2005 03:13 PM
Please respond to
icu-pcb-forum
Don:
Switching back and forth is a bad idea, there are ALWAYS going to be
problems and most of them are not with the software. There is ALWAYS going
to be round off errors when working with two dissimilar grids.
If we start a board, it starts in mils and stays that way, even if it is
shipped off-shore for off-hours work. If Japan or Germany start a board,
it is started in millimeters and stays that way even if it is shipped here
for "off-hours" work.
Keep it simple :)
--
George Patrick
Tektronix, Inc.
Central Engineering, PCB Design Group
P.O. Box 500, M/S 39-512
Beaverton, OR 97077-0001
Phone: 503-627-5272 Fax: 503-627-5587
http://www.tektronix.com ; http://www.pcb-designer.com
It's my opinion, not Tektronix'
-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [
mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Don Folk
Sent: Wednesday, August 24, 2005 11:45
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Metric to English - English to Metric
I have a customer that does business in Japan and the US. He
would like to be able
to go back and forth between English and Metric in Allegro 15.2
to supply Metric files
to Japan and English files to the US. I always seem to have
round off errors, which
can create DRC's, disconnects and pad stack corruption. It
seems like you can
minimize the problems, but you can not go cleanly back and
forth with out having to
fix something. If you keep going back and forth between
English and Metric will the
board eventually be corrupt beyond repair. Is this going to be
fixed in Allegro 15.5?
Thanks in advance,
[Don Folk] Don Folk
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