[PCB_FORUM] Re: "Line-to-Line spacing" of one dif pair to anything else
- From: "Schwartz, Jerome" <jschwa01@xxxxxxxxxx>
- To: <icu-pcb-forum@xxxxxxxxxxxxx>
- Date: Wed, 1 Feb 2006 09:03:40 -0500
Mark,
Remember to properly set up your assignment table for this spacing
rule.
Jerry
-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Mark Salberg
Sent: Wednesday, February 01, 2006 9:00 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: "Line-to-Line spacing" of one dif pair
to anything else
Thanks Michael, I will give that a try.
regards,
Mark
Michael.Catrambone@xxxxxxxxxx wrote:
Mark,
You will need to setup a NET_SPACING_TYPE Constraint Set
to handle the
Diff Pair to anything else. Basically, the Min Line
Spacing value inside
of
Constraint Manager should be set below the minimum Diff
Pair gap to avoid
false DRC errors between the two nets in the Diff Pair
when using a
NET_SPACING_TYPE Constraint to control Diff Pair to Diff
Pair spacing.
Michael Catrambone
UTStarcom, Inc.
Mark Salberg <msalberg@xxxxxxxxxxxx>
<mailto:msalberg@xxxxxxxxxxxx> @freelists.org on 02/01/2006 05:07:16
AM
Please respond to icu-pcb-forum@xxxxxxxxxxxxx
Sent by: icu-pcb-forum-bounce@xxxxxxxxxxxxx
To: icu-pcb-forum@xxxxxxxxxxxxx
cc:
Subject: [PCB_FORUM] Re: CM delta:Tolerance
Another question for the group.
How do I set up "Line-to-Line spacing" of one dif pair
to anything else?
Min Line Spacing:
I tried setting MIN LINE SPACING to 20mil, but it wants
this to be less
than specified gap.
I want Gap (10mil) and width (4mil) as specified, but dp
to anything els
to be (20mil).
Do I have to set as NET_SPACING_TYPE?
Thanks,
Mark
Mark Salberg wrote:
Actually, I want 1500mil shorter than target as
minimum length and
target length as max.
I think I will use -750:750 suggested by Daniel
so my actual target
is in the middle of the spec.
Thanks for all the responses.
Mark
the specified nets to be matched to the taget
length as a max and
1500mil shorter than the target as min.
Davies, Charles (cdavies) wrote:
Mark,
If you want the specified net to be 1500
mil shorter than the target,
you need to set the delta to -1500. The
tolerance is then applied to
the length.
Charlie
-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Mark Salberg
Sent: Tuesday, January 31, 2006 3:38 PM
To: Cadence User Group
Subject: [PCB_FORUM] CM delta:Tolerance
Can anyone tell me the correct way to
define a matched group in
Constraint Manager?
I need to match a target to "same length
as target" to "-1500mil of
the target"?
I tried 0:-1500 for delta:tolerance, but
it is not working right.
Thanks in advance,
Mark
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________________________________
Another question for the group.
How do I set up "Line-to-Line spacing" of one dif pair
to anything else?
<!--[if !vml]-->
<!--[endif]-->
Min Line Spacing:
<!--[if !vml]--><!--[endif]-->
I tried setting MIN LINE SPACING to 20mil, but it wants
this to be less than specified gap.
I want Gap (10mil) and width (4mil) as specified, but dp
to anything els to be (20mil).
Do I have to set as NET_SPACING_TYPE?
Thanks,
Mark
Mark Salberg wrote:
Actually, I want 1500mil shorter than target as
minimum length and target length as max.
I think I will use -750:750 suggested by Daniel
so my actual target is in the middle of the spec.
Thanks for all the responses.
Mark
the specified nets to be matched to the taget
length as a max and 1500mil shorter than the target as min.
Davies, Charles (cdavies) wrote:
Mark,
If you want the specified net to be 1500
mil shorter than the target,
you need to set the delta to -1500. The
tolerance is then applied to
the length.
Charlie
-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Mark Salberg
Sent: Tuesday, January 31, 2006 3:38 PM
To: Cadence User Group
Subject: [PCB_FORUM] CM delta:Tolerance
Can anyone tell me the correct way to
define a matched group in Constraint Manager?
I need to match a target to "same length
as target" to "-1500mil of the target"?
I tried 0:-1500 for delta:tolerance, but
it is not working right.
Thanks in advance,
Mark
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