Mounting brackets were designed and fabricated to allow positioning
of the new meters atop the elevation bearings as well as at their conventional
locations on the A-frames and the TMU platform. They allow for rapid removal and
replacement in order to effect calibration when mounted on the TMU.
Tests on the telescope in August 1994 showed resolution, repeatability and
stability to be adequate at the 0.1" noise level. However, their use has
revealed other features of the antenna not previously detected, and this was to
be a recurring theme throughout the initial tests. For instance, data from the
TMU mount show a periodicity (sometimes 
11
and sometimes 
6
) and zero-point jumps every minute or so of amplitude 1/3" that
can be attributed to the antenna SERVO. And measurements taken with an
inclinometer atop the LH A-frame showed large (20") swaying of the
A-frame as the antenna is moved from the zenith to the horizon. This would
appear to be a contraindication for the use of this site for regular
inclinometry.
While these effects may be combatable via appropriate data-taking
strategies, the ultimate site of the inclinometers is not yet certain.
The September measurements were made from the conventional locations
in order to compare the new system with the old.