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
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
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
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
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
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
Electronics Forum | Wed Oct 20 11:15:23 EDT 2010 | jax
Circuit and Local Fiducials are all the same. The difference is the amount of "Stretch and Skew" that is accounted for. Local fiducials apply "Stretch and Skew" to a single placement or area of the circuit, depending on Equipment used. Circuit fiduci
Electronics Forum | Wed Oct 20 08:40:48 EDT 2010 | xps
Hi everyone, here a question for the SMT production engineers... is possible today mount the fine pitch and ultrafine pitch devices (BGA, QFP, CSP), without using the local fiducials, but using the three standard fiducials of row card only? The corre
Electronics Forum | Wed Oct 20 19:02:30 EDT 2010 | swag
We've done many fine pitch parts using only global board fids with good results. However, if you're working with flex or flex/rigid designs, I would never use global or panel fids for fome pitch placement. We always request addition of local fids u
Electronics Forum | Wed Oct 20 11:39:01 EDT 2010 | mikesewell
On our Fuji NXT and AIM machines I never program local fids...we place down to 16 mil fine pitch and BGA, uBGA, multirow QFNs with no placement issues. Most boards are panelized in an array and we have corner fids added to the rails. Regards, Mi
