Electronics Forum | Sat Apr 03 19:58:53 EST 2004 | Ken
I have used tooling holes and fiucial registration since the late '80's. In fact if your maximum "vision" tolerance is +/- 0.05mm, your in the same ball-park as locating pins. It is true that fiducial registration is more accurate. However, I woul
Electronics Forum | Mon Jun 13 09:17:05 EDT 2005 | russ
Some machines may require that the two locals be used to calculate a center point where some (probably most) just use them as a second positional identifier. The fiducials are programmed as just XY and just prior to placement the machine will read th
Electronics Forum | Tue Feb 07 11:41:36 EST 2006 | PWH
Band Aide Quick Fix to get you running - Change x-value for all global fiducials in your program the exact same amount as the x-offset you are experiencing on your bad machine. Likely, if (0,0) is front-left, you should move all global fids 0.3mm th
Electronics Forum | Thu Nov 30 08:15:16 EST 2006 | jdengler
If you define cycle time as the time it takes to complete one board it is a useless number. What you need to know is the time it takes to complete one board and start the next board. This means first fiducial on first board to first fiducial on th
Electronics Forum | Tue Jan 30 08:21:02 EST 2007 | GS
Please who can help me? I am looking for fiducial (cross shape) mark (target mark? Swiss mark?..)specifications used when COB wire bonding on PCB laminate. Pad pitch should be 250umm may be 220umm?). Mainly need to know which are the tolerances
Electronics Forum | Mon Feb 12 09:44:47 EST 2007 | SWAG
Enhanced board set-up, set conveyor width, load board, (your fiducials must be accurate!), use two fiducials to set reference point, click on placement(s), move crosshair to centerpoint, use two point teach to teach one point in the center or use cor
Electronics Forum | Mon Nov 26 10:35:58 EST 2007 | slthomas
We've been using fids as badmarks on panelized boards, with reverse recognition so that an uncovered fiducial is a good mark. It's worked fine with 1.5mm fiducials but now we've run into problems with a board with 1mm fids and we can NOT get it to wo
Electronics Forum | Tue Mar 31 12:43:52 EDT 2009 | dallascap
I don't think there is anything releated to IR light in your false calls rate rise on Post-reflow. Soldering Flux is most probably the reason. Indeed, more or less soldering flux residue condenses on the boards according to the oven extraction syst
Electronics Forum | Fri Mar 26 21:48:56 EDT 2010 | dman97
Can someone explain to me what I'm supposed to do after I have done the vision offset calibration procedure? The manual tells me to put solder paste down on all 25 holes of the stencil. After this the board drops down and the machine scans each fidu
Electronics Forum | Tue Jul 06 12:25:54 EDT 2010 | isd_jwendell
I agree, setting a standard for the pcb fab shop is good. I use a fiducial a little smaller than the spec you mentioned, I use 30 instead of 40 mil, which is the minimum recommended for my machine. The rest of the spec (SMEMA Standard 3.1) appears th
