Electronics Forum: mark (Page 1 of 139)

fiducial mark

Electronics Forum | Mon Mar 01 13:06:55 EST 2004 | Chris

Hi I have a question about fiducial mark. Can anyone explain me how it is work?. Do you have to during programming set exactly center of the mark? or approximate point the mark and the machine during placemnt will correct it. In some P&P i have met

Fiducial mark

Electronics Forum | Thu Aug 18 18:33:15 EDT 2005 | darby

Search for this posting "Component Location Related to Fiducial Marks" from 9/06/04 by Joe O.B.

fiducial mark

Electronics Forum | Wed Mar 03 04:26:58 EST 2004 | Evtimov

Hi Chris, About marks detect: If you have vision system you can recognize the fids and not center them manual. If only camera you have to put the center of the camera in the center of the mark.

Fiducial mark

Electronics Forum | Wed Aug 17 13:00:41 EDT 2005 | Jaya

Hi There, I'm Jaya, would like to understand in details about global fiducial mark.Can anyone share with me or either give me some reading material about this.. regards Jaya

fiducial mark

Electronics Forum | Mon Mar 01 13:11:32 EST 2004 | stefwitt

I published some info under http://www.geocities.com/stefwitt/Vision.html

fiducial mark

Electronics Forum | Mon Mar 01 16:26:38 EST 2004 | rhdez

Is this problem with local fiducials or global? Is the problem on the same equipment? Is this a cad file o centroid? How are you measure the coordinates?

fiducial mark

Electronics Forum | Wed Mar 03 09:03:41 EST 2004 | caldon

Chris- I use the SMEMA Standard as a reference. Goto http://www.smema.org and click the Council Standards link on the Home page. the SMEMA standard you want is 3.1 or http://www.smema.org/smema3.1.pdf Hope this Helps. Enjoy, Cal www.CTDI.com

Fiducial mark

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.

fiducial mark

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

Fiducial mark

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

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