Moreover, after the 1-2 first PCBs are tested, then most if not all
Flying Probe Tester are using a "signature" system (discharge/RF/..) to
compare a supposed good first boards with the other "signatures"... made
with one finger probe onto 1 equipotential.. and done!


This is not necessarily true.
We use Itochu FPTs with UGS Tecnomatix software and the program is
written from the CAD data.
This technique does NOT use a 'golden' board.
We will typically produce a debugged FPT program from CAD data within
16hrs for something similar to a PC motherboard.
Producing a fully released FPT program would take longer. We are only
looking for manufacturing defects.

Regards
Rex


Rex Waygood
Technical Manager
 
PartnerTech Poole Ltd 
Benson Road
Poole
Dorset BH17 0RY
United Kingdom
 
Tel: +44 (0)1202 674333
Fax: +44 (0)1202 678028
DDI: +44 (0)1202 338222
Mob: +44 (0)7887 997403
 
[log in to unmask]
www.PartnerTech.co.uk

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of roland jaquet
Sent: 13 December 2008 13:56
To: [log in to unmask]
Subject: [TN] IPC-6012 Class 3 - Electrical Test Requirement

Dear Technetters,

I am seeking your advice regarding Electrical Test requirement for a
Class 3 PCB.

Would it be acceptable to use a Flying probe tester or not?

For me, Flying Probe Testers do NOT perform a full proof ET as it does
not test each equipotential against all the other equipotentials.. but
only the adjacent ones.. 
Moreover, after the 1-2 first PCBs are tested, then most if not all
Flying Probe Tester are using a "signature" system (discharge/RF/..) to
compare a supposed good first boards with the other "signatures"... made
with one finger probe onto 1 equipotential.. and done!

More and more PCB manufacturers do not even have a bed of nail tester
anymore.. 

And even if they do have it, they tend not to use Flying Probe Tester
for small / medium batch regardless of the Class! 

Thank you for your help/advice  

Meilleures salutations
Very Best Regards
Roland

www.PCBspecialist.com
Roland Jaquet
Switzerland
T+41-79-203-3723

 Active Member of the European Institute of Printed Circuits

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