Re: Great deals on encoders

> From: "Tim Goldstein" <timg@...>
>
>I just talked with the tech people at US Digital and the answer appears to
>be that by design and specification it will not work, but they have never
>tried it and think that if the correct LPI strip was used it may be
>functional. His calculations are that it would use a strip with 183.8 +- 10%
>LPI. So the best resolution would only be about .0015
>
>Based upon the +-10% he thinks the stock 200 LPI strip may work.

Using the same logic, what would happen if we took the HEDS units
that are for the 2048 CPR encoder disks, and had USD make up linear
strips to match? I haven't taken the time to sit down and do the
math to determine the required linear spacing to work with an 11mm
codewheel, but I'm guessing it's pretty small. If the resulting
quadrature output gets us past the magical .0005 resolution, I'd be
willing to kick in cash to pay for USD's tooling costs (about $200
IIRC).

-Tom Kulaga