--- In
Homebrew_PCBs@yahoogroups.com, Stefan Trethan
<stefan_trethan@g...> wrote:
> That is not what i meant Dave and you perfectly well know that...
>
> Really, i thought about a pattern that allows more objective
evaluation of
> the
> result.
> if you have these wedges you can tell at which width they merge.
>
> I tried to make such a pattern today, but didn't manage to find the
right
> software.
> it must be vector graphic i guess.
>
> thank you very much for you very helpful answer Dave, but i am
still
> looking
> for other options...
>
> ST4
OK, but I need to get such a thing anyway.
Back to your question.
On my CAD program, they had a triangle with one angle being the
center and lines emminated from that point. Each was exactly the
same width. I think the angles were 7.5 degrees so there were a lot
of lines.
The idea was that it was a printer test. Did the lines print with
saw teeth in them.
Also, did the line seperate all the way to the point.
I'm not sure what program you are using to layout, but if you can
place a series of round pads along a line so that the first has the
edge touching the line and each following pad was 1 mil further away
up to about 15 mis.
Ditto for lines. lay out 15 lines, each 1 mil more apart then the
last.
I would create a board and then shrink it to half size and try
that . If it came out perfect then your normal sized lines will be
easy to make.
Dave
>
>
> >
> > Test pattern ?
> >
> > I have a simple 28 pin DIP and 28 pin SOIC with about 28 thru-
holes
> > that would be a good test.
> >
> > Make sure the holes are plated thru and could you electro-plate
the
> > SOIC pad in gold ?
> >
> > Send it to me and I'll review your test. : )
> >
> > Dave
> >