Electronics Forum | Sat Jun 26 02:32:32 EDT 2010 | prinsisgarcee
how do i calculate false call rate? i got this equation = [over reject / (total solder joints + components) ] * 1000000 and i got a table which shows data like number of solder joints, components on panel, and number of false call, and the false
Electronics Forum | Tue Jun 29 11:46:36 EDT 2010 | davef
Prins: Everyone has equations. Here's one some people use: False call rate = [Number of defective boards, but good at inspection]/[Total number of boards produced] Why don't you ask the people [that calculated the numbers that confuse you] how the
Electronics Forum | Fri Jul 09 19:20:49 EDT 2010 | rway
This table, is it in a database? And is it indicating the number of component, solder insp. etc based on one board or one panel? It needs to be based on the total number of inspection on your panelized pcb. The equation works, you may just be look
Electronics Forum | Thu Apr 19 20:01:30 EDT 2012 | eadthem
some things to consider, Is there flux on the board. are there finger prints on the tops of parts. Is the board warped at the V score from reflow Is the board shifting in the machine during inspection. These are the issues we have had with our mir
Electronics Forum | Mon Apr 02 09:57:18 EDT 2012 | vparis
Our company is having issues with our YesTech F1 AOI machine the programs are currently not utilizing this machine correctly. we are have a false call rates of about 5% to as high as 12% of the total number of inspection points. I have started to rep
Electronics Forum | Tue May 10 10:59:47 EDT 2016 | dtewatt
Hi All, I've been told that 3D AOI machines are a solution to the false calls that you get on a 2D machine, but I don't really see how the depth information can help in eliminating false calls for unreadable markings, misregistered parts etc. For s
Electronics Forum | Wed Apr 04 13:33:12 EDT 2012 | rway
We currently have 2 M1 systems. Our false call rate has never been has high as you suggest. There is something wrong with your program and/or inspection algorithms, as you probably already know. You should be somewhere between 1000-1500 vcpmo (fal
Electronics Forum | Mon Apr 09 08:17:29 EDT 2012 | vparis
Reese, Thank you so much for your reply.
Electronics Forum | Mon Apr 16 14:54:39 EDT 2012 | vparis
Reese, Thanks for your speedy reply. Vic
Electronics Forum | Wed May 18 13:11:08 EDT 2016 | skyler0121
SMT, I currently work with both 2D and 3D AOI machines. 3D does give you the added benefit of Height on components which does help cut down on some of the over rejects. However, it does still have trouble with some of the same things as the 2D system
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