MDM Trouble Report for 2002 Feb 22

Telescope: 2.4m
Observer(s): Glikman & Gerardy (Columbia & Dartmouth)
Instrument: TIFKAM

Problem(s) Encountered:
We noticed two problems with TIFKAM tonight.  First, the  step
out  errors on the movement of the prefilter wheel continue to
be a problem.  The prefilter wheel seems to get stuck often when
moving toward higher prefilter numbers.  Usually, walking the 
prefilter all the way around the other way will clear the problem.

Second, just after sunset, the IC seemed to suffer a communication
failure with the instrument.  We could start and stop movie mode,
but couldn't do any prefilter or filter movements.  The commands
would just time out.  So we tried to re-boot the system, quitting
prospero, caliban etc, and re-booting the IC & WC.  While 
re-booting, the IC began to complain about timeout errors while
pinging various ports.  After several attempts to get the system
up, we finally resorted to turning off the IC & WC, killing 
caliban & prospero, and then turning off the power to the 
instrument.  Then we turned everything back on, and the IC no
longer complained about time out errors, and after a couple of
re-start iterations, we were able to get prospero to startup
cleanly.

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Submitted on 2002 Feb 23 [6:53:48]