DJ,
The spiral patterns are very nice to qualify the process once a track &
space has been preliminary selected.
I saved your link if I happen to need it in the future.
Thanks for taking the time to create the patterns and the detailed data on
the website.
Bertho
From: DJ Delorie Sent: Sunday, May 01, 2011 21:57
"Boman33" <
boman33@... <mailto:boman33%40vinland.com> > writes:
> With all this ongoing work on testing printers and procedures, I added a
> Test Target for PCB traces to my old US Air Force 1951 standard test
target.
IIRC Stouffer (the step gauge people) also have a resolution test gauge,
which is (in theory) a "perfect" pattern to test UV exposure resolution
with.
Also, a while back I did a set of "spiral challenge" patterns:
http://www.delorie.com/pcb/spirals/Adam's idea was that it's easy to do one or two traces at a given size,
but you can't say you can do that size unless you can do it reliably -
like a 4cm square spiral. These patterns let you test for a LOT of
trace length, both for shorts and opens.
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