Electronics Forum | Fri Sep 21 02:26:32 EDT 2018 | sebestajaromir
Hello gentleman, I saw many topics regarding aoi verification but I didn't see how You handle with board with simulated failures during life time, because we Are facing issue with ageing of tin oxidation. Is it any idea how to solved this issue?
Electronics Forum | Thu Apr 11 11:24:55 EDT 2013 | markhoch
Thank you for your advice Eric. Different SMT Machine Platforms have different methods for handling these PCB Panels with bad circuits. (Commonly known as "X-outs"). Some platforms allow you to identify X-Outs simply by darkening in the first fid
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 | Sat Aug 20 15:08:32 EDT 2005 | Jaya
HI Darby & Danny. Thank YOu. I have got the information. With your help,I u'stand and start asking my supplier to run the boards with glb fid's which also accept by Customer. regards Jaya.
Electronics Forum | Mon Mar 01 20:53:28 EST 2004 | Ken
How does a fiducial work? I am going to venture a guess as how it ralates to the parts you are trying to place... A PCB fiducial is a landmark. The fiducial tells the machine where the board is located in the machine. A single fid can only deter
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 | Tue Mar 02 22:40:52 EST 2004 | pdeuel
To clean up other replys I will add that some most all machines have global correction. Most placements are an off sets from pcb 0,0 usually the lower left corner of the board. When the machine locates the fiduitals and these fids are not exactly whe
Electronics Forum | Thu Apr 11 10:17:17 EDT 2013 | ericrr
Some times the PCB manufacture sends PCB panels with bad circuits, there are three ways to make these PCB without placing parts on the bad circuit, Well two in fact plus my method. (1) Placing a light mark on a dark background (or reverse) then the
Electronics Forum | Thu Dec 09 13:41:13 EST 1999 | JAX
IF YOU READ FIDUCIAL MARKS THAT ARE PARALLEL TO EACH OTHER THE PLACEMENT WILL NOT BE AS GOOD. ONE OF THE PROBLEMS WITH THIS METHOD IS IT COMPLETELY THROWS OUT THE CONCEPT OF BOARD STRETCH IN ONE AXIS. THE OTHERS MAY VARY DEPENDING ON WHAT MACHINES YO
Electronics Forum | Sat Aug 22 09:59:44 EDT 2015 | linux
Hello all, Can someone tell me the step by step procedure to check xo,yo, mark read position using Fuji board. Cp6 Fuji.