Quote:
Originally Posted by gary
As cited in the reference by Eric to the write-up by Scott Tannehill, it could
be that your Alt bearings have some eccentricity. If this is so, when the scope rotates
in Alt, the Alt tangent arm might be putting a sideways force onto the encoder,
mechanically stressing it. As an experiment, unfasten the screw and and wingnut
that holds the tangent arm in place and let it just hang free. Then rotate the scope in Alt
and note if the bottom of the tangent arm is shifting with respect the side of the
rocker box. Also note when doing this whether the ALT ENCODER ERROR message
now disappears.
Best Regards
Gary Kopff
Managing Director
Wildcard Innovations Pty. Ltd.
20 Kilmory Place
Mount Kuring-Gai NSW 2080
Australia
Phone +61-2-9457-9049
Fax +61-2-9457-9593
sales@wildcard-innovations.com.au
http://www.wildcard-innovations.com.au |
Gary you're too quick!
Indeed, I edited my previous post after a re-think. And I did as you suggest and let the tangent arm hang free. This has improved the situation (can now go through maybe 70deg before errors). Will have to continue tomorrow after some sleep.