Irv,

I saw an article some time ago on Latest. It sounded very much like
traditional THD measurement, but with the addition of DC bias. Have
I misunderstood, and if not what is the advantage of the DC bias?

David Whalley
Loughborough University

>
>FROM: I. MEMIS, DEPT GGMG/BLDG 257-4, AISLE A, ENDICOTT
>*** Resending note of 08/13/96 13:54
>      ENDICOTT ELECTRONIC PACKAGING
>SUBJECT: Fault finding on test vehicles
>=========================================================================
>SUBJECT: Fault finding on test vehicles
>The most effective system that we have for detection of "near-opens" or
>"intermittents" is using LATEST Model 10.  This is described in technical
>reports that have been presented at IPC and other conferences.  LATEST
>is capable of finding local 3 milliohm deviations from nominal in a
>5 ohm line.  After confirming the presence of the "near-open" with LATEST
>you then start to split the net thru probing with LATEST to isolate the
>bad section.  Good parts of the net show low levels of LATEST output but
>the bad sections repeat the end to end LATEST net output. If anyone is
>interested in more info, please contact me at 607-755-6022.
>Irv Memis
>IBM
>Endicott,NY

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