[PCB_FORUM] Re: SPB16.2 - Can't change impedance value in Cross section menu
- From: Barbara Seeger <blm@xxxxxxxxxxx>
- To: icu-pcb-forum@xxxxxxxxxxxxx
- Date: Thu, 8 Jan 2009 11:53:47 -0500 (EST)
Bill and forum members using 16.2,
Use caution with downrev to 16.01 in thinking it can be usable as
a workaround for 16.2 issues. If you go back, you will lose a lot of
constraint information. (Diff pair region rules, same net spacing
constraints, and any HDI rules would be a concern).
The downrev form prints out a list of what's affected. Consider it
carefully if you've taken advantage of the new features, constraints
or new properties. Most 16.2 specific improvements can't make the round
trip because the features just weren't there in younger versions.
Regards,
Barbara Seeger
> Subject: [PCB_FORUM] Re: SPB16.2 - Can't change impedance value in Cross
section menu
> Date: Thu, 8 Jan 2009 10:27:08 -0600
>
>
>
> Bill,
>
> There is another way. I received a email from another user this morning
> and he suggested to use Tools, Setup Advisor, Next, Cross-Section. I
> can change the impedance values and widths and it seems to work going
> this route. I tried the Setup, Cross-section route after I closed the
> set-up advisor route and the values stayed. But as soon as I tried to
> change the values in Setup, Cross-section, it reverted back to being
> stuck on 60 ohms.
>
> Mike Crittenden
> Technology Services Corporation, Phase IV Operation
> (256) 535-2118
>
>
> -----Original Message-----
> From: Crittenden, Mike
> Sent: Thursday, January 08, 2009 9:50 AM
> To: 'icu-pcb-forum@xxxxxxxxxxxxx'
> Subject: RE: [PCB_FORUM] Re: SPB16.2 - Can't change impedance value in
> Cross section menu
>
> Bill,
>
> I still have 16.01 installed so I believe I am going to "down rev" the
> board and continue on with 16.01 until this issue is fixed.
>
> The only other way that I know to get around this in 16.2 is to set the
> "acon_no_impedance_width" property in user preferences, route, connect.
> If this option is on, impedance rules will have no effect on the trace
> width in add connect. You will have to use a external impedance
> calculator (online or purchased) to calculated your trace\space values
> for diff. pairs and apply those values in the constraint manager for
> each layer accordingly. It's a little more work but it will do.
>
> Mike Crittenden
> Technology Services Corporation, Phase IV Operation
> (256) 535-2118
>
> -----Original Message-----
> From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Bill Dempsey
> Sent: Wednesday, January 07, 2009 5:40 PM
> To: icu-pcb-forum@xxxxxxxxxxxxx
> Subject: [PCB_FORUM] Re: SPB16.2 - Can't change impedance value in Cross
> section menu
>
> Interesting...that is my situation as well (PCB Perf L).
>
> -----Original Message-----
> From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Crittenden,
> Mike
> Sent: Wednesday, January 07, 2009 4:44 PM
> To: icu-pcb-forum@xxxxxxxxxxxxx
> Subject: [PCB_FORUM] Re: SPB16.2 - Can't change impedance value in Cross
> section menu
>
> Hi Ed,
>
> I have upgraded to the latest ISR. I have been working with Tech
> Support and as it turns out, it is a bug that is supposed to be fixed on
> the next ISR. It's only a problem if you don't have any of the SI
> licenses installed with 16.2. We are using Allegro performance option L
> with no SI licenses.
>
> Mike Crittenden
> Technology Services Corporation, Phase IV Operation
> (256) 535-2118
>
> -----Original Message-----
> From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Ed Hickey
> Sent: Wednesday, January 07, 2009 2:34 PM
> To: icu-pcb-forum@xxxxxxxxxxxxx
> Subject: [PCB_FORUM] Re: SPB16.2 - Can't change impedance value in Cross
> section menu
>
> Mike,
>
> Can you try upgrading to the latest 16.2 ISR? A hotfix was issued for
> this problem on Dec 20th.
>
> Ed
>
>
> -----Original Message-----
> From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Crittenden,
> Mike
> Sent: Wednesday, January 07, 2009 1:24 PM
> To: icu-pcb-forum@xxxxxxxxxxxxx
> Subject: [PCB_FORUM] SPB16.2 - Can't change impedance value in Cross
> section menu
>
> Hello All,
>
> Just upgraded to 16.2 and when I try to chance the impedance value in
> the cross section menu, it is stuck on 60 ohms. Any suggestions?
>
> Thanks!
>
> Mike Crittenden
> Technology Services Corporation, Phase IV Operation
> (256) 535-2118
>
>
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