Electronics Forum | Wed Feb 13 14:35:57 EST 2019 | aldrich17
we do see some inconsistencies with fiducials. We use X, Y references in the machine but still find them with the camera to populate pcbs. But just can't always center the cross-hairs in the fiducial. Most of the time we have to offset the cross-hair
Electronics Forum | Thu Nov 30 11:30:31 EST 2006 | billwestiet
I like this definition the best. After years of sales of pick and place and other, this is always still a topic of discussion. If your customer's cycle time involves building a board in two different machines, then I would suggest measuring and add
Electronics Forum | Wed Aug 17 15:30:56 EDT 2005 | DannyJ
Hi Jaya, Here's a definition, towards the bottom of the listing... http://en.wikipedia.org/wiki/Fiducial Mainly, a 'global' fiducial refers to the outside of the board, usually on the scrap rails. This allows the machine to locate two reference
Electronics Forum | Wed Mar 03 13:33:25 EST 2004 | stefwitt
How well should the fiducial be centered in the teach mode? Consider that you see the fiducial with probably 40 times magnification on the monitor. If you see the cross-hair a bit off center, then this is most likely just by a few hundreds of a milli
Electronics Forum | Mon May 07 20:02:42 EDT 2001 | pzohbon
Does anyone know of a good manfacturer or supplier of fiducial cleaner pens. We are seeing a haze left behind on our current cleaners.
Electronics Forum | Thu May 14 15:51:24 EDT 2009 | dnachristen
I've gone round and round on this very subject with our manufacturing engineer. He prefers to use panel fiducials and I prefer board fids. I've seen the result in placement from bowed PCB's in the machine. Skewing the board a fraction will throw off
Electronics Forum | Fri Aug 05 15:09:30 EDT 2016 | proceng1
I grabbed another White board that does have the "natural" board around the fiducials. Still no go. See pictures
Electronics Forum | Tue May 02 18:13:44 EDT 2006 | jsloot
I have read through some archives on fiducials and see that there are a lot of people having problems with a .050 circle. One suggestion for a remedy was using a filter on the camera. Anybody else using this remedy? I would like to know more about th
Electronics Forum | Tue Feb 15 18:03:56 EST 2000 | JAX
Dane, I'll give you a quick guess before I log off; The reason you are seeing problems with dome shaped fiducials is probably because the machines in question do not use grey scale recognition. They asign either black or white( not 256 shades of grey
Electronics Forum | Fri Feb 19 11:28:51 EST 1999 | Steve Gregory
Hi Bob, I know what you're talking about, it seems that most machines that I've worked with, have at one time or another some problem seeing a fiducial. Some machines are worse than others, and it really didn't make a difference what kind of vi
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