turret history

nov 03

    Started failure modification log 17sep14.. need to put in all the old failures

date
yymmdd
description
160112
turret was not arriving at position. off by greater than .1 degree (default for on position in software.. turwaitpos()).
This is caused by an offset in the dac ..
ran rsh pnt ttTst   and used command 9 to update the zeroVelocityoffset for the dac. Seemed to be ok after this.
(old offset 53, new offset 76).
140917
turret not arriving at position. off by .5 to 1 deg. Trouble was the room temperature ~98 deg. 1 ac was not working, the 2nd was blowing warm air.
After opening the box, reseting the ups, it started to arrive at position.
140917
turret.lib. Added reboot bit to GeneralStatus. Prior to this, vxworks prog would not reset the time on a little star reboot (since the reboot bit was not being set).Little star code updated. Still need to modify vxWorks ttProg.c to check the bit.
140907
power failure caused little star to fail. replace old little star with new. Didn't work for a few days (no rs484 communications)  until we got the correct jumpers set on the new little star
140815
if turret does not arrive at position, probably an offset in the dac board (more info.. see summary)
140814
adjusted the backlash compensation board (more info)
140814
turned on 1 sec monitoring of turret info to file. output: /share/phildat/turret. see idl routines @turinit
060406
changed motor brake



<- page up
home_~phil