Electronics Forum: local and fiducials (Page 1 of 22)

Can local fiducials improve BGA placement?

Electronics Forum | Fri Jun 08 13:29:14 EDT 2001 | dougt

Local fiducials will help component placement but will have no effect on part recognition. Local fiducials help you compensate for board skew or streatch by looking at a small area of the board vs. the board fiducials that cover placement over the e

Can local fiducials improve BGA placement?

Electronics Forum | Wed Jun 06 15:45:37 EDT 2001 | gdstanton

Looking for any insight into whether the use of local fiducials will help or eliminate component recognition issues.

Quad Central Controller won't allow local fiducials

Electronics Forum | Thu Jan 14 10:07:01 EST 2010 | leemeyer

Placement numbers are 4 digits long, the first digit is the head# followed by a 3 digit placement number. For example if you adding a local fiducial for placement #3 you need to enter 1003.

Quad Central Controller won't allow local fiducials

Electronics Forum | Thu Jan 14 11:10:19 EST 2010 | bobpan

Nice, Now that rings a bell!

Quad Central Controller won't allow local fiducials

Electronics Forum | Wed Jan 13 22:59:53 EST 2010 | goolash

The Central Controller software on our Quad IVc machine is refusing to allow me to add local fiducials. Essentially, I follow the manual's directions, and when I press 'N' for New, it asks me to enter the placement number. No matter what number I e

Quad Central Controller won't allow local fiducials

Electronics Forum | Thu Jan 14 06:27:50 EST 2010 | bobpan

Hello, Havent done them on this machine for 15 years but the manual i have says to go to the teach menu....answer yes/no to local fids taught by autoprogram. If no....enter feeder number and place number then teach. Bob

Can local fiducials improve BGA placement?

Electronics Forum | Wed Jun 06 16:04:02 EDT 2001 | pteerink

Greg, Need to give more to get more! What are the details? What are the problems you are seeing exactly? What type of part are you trying to place? What type of machine are you using? What type of vision recognition? What type of PCB finish? Phil

Can local fiducials improve BGA placement?

Electronics Forum | Wed Jun 06 20:45:54 EDT 2001 | Deon Nungaray

.020" The logic behind this is that from the time of the initial fiducial check, to the time of the critical parts placement which are typically placed last, there may be changes. What I mean by changes is that depending on what type of assembly equi

Can local fiducials improve BGA placement?

Electronics Forum | Wed Jun 06 16:51:06 EDT 2001 | jax

Unless your placing micro-bga, board edge fiducials on alternating corners will provide more than enough placement correction ( Micro-bga's should also be fine depending on how your equipment maps the board ). The part data and vision recognition nee

Can local fiducials improve BGA placement?

Electronics Forum | Thu Jun 07 07:11:41 EDT 2001 | stefwitt

8" ). For calculation of the theta angle, the global fiducials should be placed over the diagonal. Component recognition can be improved if your vision system has different light zones. The steep light should be turned off and the flat light turned

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