[PCB_FORUM] Re: diff pair by area

Hi Gerry,

So no other possibilites other than reducing the line width to 3.99 ?

Regards,
Kumaran.
----- Original Message ----- From: "Gerry Meier" <gerry.meier@xxxxxxxxxxxxxx>
To: <icu-pcb-forum@xxxxxxxxxxxxx>
Sent: Monday, February 28, 2005 9:10 PM
Subject: [PCB_FORUM] Re: diff pair by area


"From previous posting on this forum"

Define the primary diff line width as 4 mil  with a gap of 7 mil.

Now Define the Neck line width as 4 mil with a gap of 4 mil.
( I want the smallest line on the board to be 4 mil for fabrication
reasons.)

Routing by hand, hit the neck menu option. Nothing happens. No smaller
gap.

Ahhh, but if I change the Neck line width to 3.99 mil and gap to 4 mil.

Route the line, Pick the neck menu, the new spacing and line width is
applied.

This seems to be reproducible.  Changing the neck line width back to
4mil breaks the feature.



Gerry Meier
Sr. PCB Designer
Freedom CAD Services, Inc.
Voice: (603) 864-1300 x1350
Alt. Voice: (386) 753-0048
Email: gerry.meier@xxxxxxxxxxxxxx
visit our website at<http://www.freedomcad.com


-----Original Message-----
From: giyora kimhi [mailto:elcad@xxxxxxxxxxxx]
Sent: Monday, February 28, 2005 10:01 AM
To: icu-pcb-forum@xxxxxxxxxxxxx; icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] diff pair by area

hi all,

im using allegro performance 15.2.
i have many diff pairs in my design and the rules for them work great
,but between bga pins i need to decrees the "primary gap".
in 14.2 this was no problem ,is it possible to apply different diff pair
rule by area ?

regards



Giyora Kimhi
Elcad PCB  Ltd

elcad@xxxxxxxxxxxx
Tel (Main):+972-3-967-6247 ;    2nd
Line:+972-3-958-0485   ;  Fax:+972-3-966-0948   ;    CP:+972-52-560-866
http://www.el-cad.co.il/

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