[PCB_FORUM] Re: In Circuit Test (ICT)

We find the best coverage is using both SPECCTRA and Allegro. The two ICT programs approach coverage from slightly different points of view ands are, in fact, complementary (ie better coverage using both together rather than either individually).

SPECCTRA allows controlled 'antenna length' for the testpoints so you can progressively apply test coverage by criticalitry of antenna stub (clocks with zero length first, then addr/data of 100 mils, 200 mils, etc).

ICT is a relational task and highly dependent on locating the next testpoint spaced from earlier testpoints, so the sequence of approach can produce different results.

Additionally, SPECCTRA operates on selected items so by unselected JTAG you can exclude the JTAG pins from the required coverage list.

Hope this helps,

David


At 10:25 AM 1/19/2006, you wrote: 
What is the best way to define ICT.
Allegro or Specctra?
David Price if you are there, as you know we have Make Do.
Just wanted to check with the group to see which tool is easier to use.

Thanks,
Mark


_____________________________________________________________________________
Scanned by IBM Email Security Management Services powered by MessageLabs. For more information please visit http://www.ers.ibm.com
_____________________________________________________________________________
-----------------------------------------------------------
To subscribe/unsubscribe: Send a message to icu-pcb-forum-request@xxxxxxxxxxxxx
with a subject of subscribe or unsubscribe

To view the archives of this list please login at
http://www.freelists.org. Our list name is icu-pcb-forum
or go to http://www.freelists.org/archives/icu-pcb-forum/

Problems or Questions:
        Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx

Want to post a job listing ?  DON'T DO IT HERE!
Better yet, join our jobs listing forum.

SUBSCRIBE:  icu-jobs-forum-subscribe@xxxxxxxxxx
POST:       icu-jobs-forum@xxxxxxxxxx
-----------------------------------------------------------


David Price

davidp@xxxxxxxxxxxxxx

866.586.9352    Phone   Toll-Free
866-422.5312    Fax     Toll-Free

http://www.eAutoroute.com

B o r n  T o  R o u t e

SPECCTRA Autorouting, SPECCTRA Onsite and Seminar Classes, MakeDO E, MakeDO and AutoTools

DFM
351 Pleasant St. #275
Northampton, MA 01060



-----------------------------------------------------------
To subscribe/unsubscribe: Send a message to icu-pcb-forum-request@xxxxxxxxxxxxx
with a subject of subscribe or unsubscribe

To view the archives of this list please login at
http://www.freelists.org. Our list name is icu-pcb-forum
or go to http://www.freelists.org/archives/icu-pcb-forum/

Problems or Questions:
        Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx

Want to post a job listing ? DON'T DO IT HERE! Better yet, join our jobs listing forum.

SUBSCRIBE:  icu-jobs-forum-subscribe@xxxxxxxxxx
POST:       icu-jobs-forum@xxxxxxxxxx
-----------------------------------------------------------

Other related posts: