[evlatests] Antenna 14 ACU Problem

[Pat Van Buskirk]

Last night, the operator was unable to park antenna 14 after an observe 
script ended. Here is the sequence of events.

1.  Script ended.

2.  Operator attempted to park the antenna; acu display indicated 260/88.

3.  After approximately 3 seconds, the display reverted to 427/36 and 
the antenna continued to drive to that position. Elevation continued to 
decrease.

4.  The operator stopped the antenna by putting it into standby.

5.  From the ACU screen, the operator set the az/el; the commands stayed 
for approximately 3 seconds, then reverted to 519/65.

6.  The operator attempted dpm, park, stow, direct acu commands; all to 
no avail.

7.  The operator e-stopped the antenna and left it in that position 
since the winds were not a problem.

8.  This morning, the servo group manually parked the antenna.

JC Campbell was the operator and will be on duty tonight. If you have 
questions about what happened, please email him directly 
(jccampbe at aoc.nrao.edu).

Cheers,
Pat

-- 
Nobody can make you feel inferior without your permission.
-Eleanor Roosevelt-