[PCB_FORUM] Re: ICU2004 - PCB Top 5 Issue's
- From: george.h.patrick@xxxxxxxxxxxxxx
- To: icu-pcb-forum@xxxxxxxxxxxxx
- Date: Thu, 24 Jun 2004 09:10:31 -0700
Y'all:
This is a religious argument (like PC vs. Unix, vs. Mac).
We should agree to disagree ;)
--
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.tektronix.com <http://www.pcb-designer.com/>
http://www.pcb-designer.com
It's my opinion, not Tektronix'
-----Original Message-----
From: Baumstark Michael-EMB043 [mailto:M.Baumstark@xxxxxxxxxxxx]
Sent: Thursday, June 24, 2004 08:14
To: 'icu-pcb-forum@xxxxxxxxxxxxx'
Subject: [PCB_FORUM] Re: ICU2004 - PCB Top 5 Issue's
Ed:
Thanks for the update to "what's up" with 15.2. I see the 3 new types of
DRC suppressions that can be over-ridden with intentional action. It just so
happens that I had a PCB design pass by my plate a few months back where I
would like to have utilized all these exceptions, for all the right reasons,
(hard gold plating). I have seen so many exceptions to the rules in my PCB
design career path, albeit only 15 years so far, that I believe that
anything is negotiable providing there is a good reason to back it up.
Therefore, I agree "to disagree that a DRC should never be suppressed".
There is a time and place for many things. I do recommend that if a DRC is
suppressed that it must be duly noted and not hidden away so that nobody
knows about it. Production designs must conform to the highest standard of
DRC compliance, but that is where I have also seen the long lists of
"signed-off and approved" exceptions. Once exempted, I would not mind if I
no longer saw the flag.
Anyways, keep the inputs coming for the Top 5 inputs for the various
categories. We have not yet contibuted to the list of inputs, but will soon.
But I would like to suggest that a separate catergory be opened up
specifically for Constraint Manager and not to be lumped together with SQ &
SigXp. For one, this allows for 5 more top priority items focused into the
primary tool groupings and I already have at least 5 inputs for Constraint
Manager alone.
Thanks.
Sincerely yours,
Michael Baumstark
Staff PCB Designer - BSEE, CID+
Motorola - Advanced Product Technology Center
-----Original Message-----
From: Ed Hickey [mailto:ehickey@xxxxxxxxxxx]
Sent: Thursday, June 24, 2004 9:51 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: ICU2004 - PCB Top 5 Issue's
There will be a method to suppress certain DRCs in 15.2 by applying
properties to the objects.
DRC Suppression in 15.2 (June 28, 2004)
3 new properties are available to suppress typical 'false' type DRCs. In
15.0, the property NODRC_SYM_SAME_PIN was introduced that suppresses pin to
pin spacing errors within the same component. Use of some of these
properties may alleviate the requirement for constraint areas or time spent
reviewing each instance of error.
* NODRC_COMPONENT_BOARD_OVERLAP - apply directly to component
placebound shape when components overlap the package keepin area. Typically
these components tend to be mechanically constrained like connectors,
switches and LEDs.
* NODRC_ETCH_OUTSIDE_KEEPIN - apply directly to etch elements outside
the route keepin area.
* NODRC_VIAS_OUTSIDE_KEEPIN - apply directly to vias placed outside
the route keepin area. These vias tend to be GND stitching vias in large
quantities. The use of temp groups is recommended when suppressing a large
quantity of vias.
-----Original Message-----
From: Musetti, Carl [mailto:cmusetti@xxxxxxxxxxxxxxxx]
Sent: Thursday, June 24, 2004 9:00 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: ICU2004 - PCB Top 5 Issue's
I completely agree with you Jerry Allegro DRC system is one of the strongest
features of the tool and to have it made so that errors are acceptable is
unacceptable!
-----Original Message-----
From: Schwartz, Jerome [mailto:jschwa01@xxxxxxxxxx]
Sent: Thursday, June 24, 2004 7:48 AM
To: 'icu-pcb-forum@xxxxxxxxxxxxx'
Subject: [PCB_FORUM] Re: ICU2004 - PCB Top 5 Issue's
For all of you that have been doing real design work for 25 years or more
please, please, please, do not let something like this
pass through to Cadence. An error is an error. There is no such thing as a
false DRC. The system is trying to tell
you that something is wrong. Understand the error, make it your friend, then
correct it. It will go away, no hard feelings.
I have never sent a design to be fabricated with DRC's. There's always a way
to correct the error. I've seen most of it, if not all.
No DRC at required areas:
False DRC errors should have some way of making the tool not report them
as errors.
Regards,
Radha Krishnan G.
Layout Design Engineer
Caliber InfoTech India P Ltd.
35/1, 10th Street, Gandhipuram,
Coimbatore-641012
Tamil Nadu
India
Phone:+91-422-5371411
caliber logo
<file:///C:/Documents%20and%20Settings/Administrator/My%20Documents/My%20Pic
tures/Caliber-Logo1.jpg>
-----Original Message-----
From: local [mailto:suresh@xxxxxxxxxxxx]
Sent: Tuesday, June 22, 2004 7:51 PM
To: felix@xxxxxxxxxxxx; grk
Subject: Fw: [PCB_FORUM] ICU2004 - PCB Top 5 Issue's
----- Original Message -----
From: sureshbabu <mailto:suresh@xxxxxxxxxxxxxxx>
To: felix@xxxxxxxxxxxx <mailto:felix@xxxxxxxxxxxx> ; grk@xxxxxxxxxxxx
<mailto:grk@xxxxxxxxxxxx>
Sent: Tuesday, June 22, 2004 7:47 PM
Subject: [PCB_FORUM] ICU2004 - PCB Top 5 Issue's
Dear PCB Forum Member,
The International Cadence Users Group PCB SIG is now soliciting input for
this years PCB Top issues. Now is your chance to influence the functionality
of the Cadence PCB products. This year we are doing things a little
differently than previous years by having individual Top Five issue lists
for the following Allegro Platform products: Concept HDL, Capture/CIS,
Allegro, APD, SpecctraQuest/SigXP/CM and Specctra.
The schedule will be as follows:
Input Begins: June 22, 2004
Input Ends: July 19, 2004
Top-5 Voting Begins: July 26, 2004
Voting Ends: August 6, 2004
Results Published: TBD
Cadence's response to the Top-5 Issues will be shown as a presentation at
the 2004 International Cadence Usergroup Conference and shortly there after
the responses will be posted at <http://www.cadenceusers.org/>
http://www.cadenceusers.org. Only the responses, and not the entire
presentation will be posted.
Please visit the following link to submit issues for this years Top 5
voting.
http://www.cadenceusers.org/sigs/pcb/pcbIssuesSubmit2004.html
In addition please checkout our website for Conference Updates, Schedule and
Registration Specials
We are looking forward to hear from you
ICU PCB SIG
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