Dear synergists:
                    The peripheral area of a laminated 
                    printed circuit board experiences the 
                    most scaling problems.  Yet this is the 
                    area of the panel that is x-rayed in 
                    order to measure for xy drill offset.
                    Xray data suggests our current scaling 
                    error is not predictable.   
                    Also, our shop sees that the measured 
                    offset, especially in Y, usually results 
                    in an overcompensating shift in the 
                    drill offset.  
                    Has anyone else seen a Y offset 
                    measurement problem?  
                    More importantly, how is data from the 
                    peripheral area justifiable?  
                    
                    Best regards

***************************************************************************
* TechNet mail list is provided as a service by IPC using SmartList v3.05 *
***************************************************************************
* To unsubscribe from this list at any time, send a message to:           *
* [log in to unmask] with <subject: unsubscribe> and no text.        *
***************************************************************************