Electronics Forum | Wed Nov 27 18:10:41 EST 2002 | andrewbrook
Quad4C's have their moments. If the price is right and you are aware of the machines limitations then you will be satisfied. The placement rate is slow, 1.2 seconds/chip. Don't buy any Quad if it has the CyberOptics Laser unit, the Quadalign unit is
Electronics Forum | Mon Dec 14 15:08:46 EST 1998 | Jim Mitchell
Provided your software supports board stretch and the board is stretched in a linear fashion, you should not need fiducials for each image. If you do elect to use local fiducials, Quad recommends a single fiducial. This method is faster and you can
Electronics Forum | Mon Feb 11 04:53:13 EST 2013 | ngineer
I'd like some recommendations on the type / size of quad fiducials to use. I started with a small + on the silkscreen layer, but i think that a via is better, and have been using it. Now i'm considering a round smd pad, but not sure the size. Any
Electronics Forum | Mon Feb 11 05:47:20 EST 2013 | bobpan
Use a circle 40-50 mils. Via's and silkscreen layer markings are inaccurate.
Electronics Forum | Fri Feb 24 08:16:10 EST 2012 | ngineer
My Quad IVc checks fiducials on the board, but only on the first board of the run. all subsequent boards are not checked. How do i change this so all boards are checked / aligned to their fiducials? The first board always comes out a bit better th
Electronics Forum | Tue Feb 28 12:23:36 EST 2012 | veeckm
It sounds to me like your using only the Global fiducial mode. If your running multiple images on one panel use image fiducials instead
Electronics Forum | Mon Feb 11 13:07:30 EST 2013 | deanm
You want your machine to spot the fiducials automatically. A 40mil round copper pad is the absolute minimum fiducial to use, but we found in practice that our Quad equipment won't spot them reliably. I am now using a 60mil round fiducial and it picks
Electronics Forum | Sun Jan 20 17:55:49 EST 2013 | ngineer
Mikej, I'm only running a single image, just want to correct for the slight variations in how the board seats in the transport. It's not more than a few mils off, but enough to cause an issue on fine pitch parts. I don't have any image fiducial
Electronics Forum | Mon Jan 21 08:36:23 EST 2013 | bobpan
The global or image fiducials is set under teach fiducials screen. You will get the option to turn on the one you want. You should choose one or the other depending on what you are building. You are correct for what tep hold,pass and tep vision does.
Electronics Forum | Fri Feb 24 13:21:42 EST 2012 | bobpan
The correct sequence steps should be: 1. tep hold 2-? pick/place/nozzles tep vpass goto 1 This is out of the programming manual.
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