Changes between Version 54 and Version 55 of PublicPages/MayallZbandLegacy/NotesforObservers/Problems

Timestamp:

Mar 11, 2016 6:46:24 PM (9 years ago)

Author:

Robert Blum

Comment:

--

PublicPages/MayallZbandLegacy/NotesforObservers/Problems

@@ -250 +250 @@
 
 Note "dataX" is usually data2 or data3 and DATE is the UT Date of the morning on which we are observing.
+
+=== 12. Semaphore Failure ===
+
+'''Symptoms:''' 
+- The tonight.sh script ends without writing the last image. There is a message in the NOCS xterm that tonight was executed in that says "FAILURE" and refers to a semaphore failure. 
+- NMSL window shows countdown green 0.0
+
+'''Frequency:''' Rare. Several times in a three night run in March 2016.
+
+'''Fix:''' 
+- First kill mosbot with ctrl C in the mzls@mayall-idl xterm.
+- Try to read out the last image. 
+
+ {{{ > ditscmd nohs nohs_endobs }}}
+
+ This should work. The image may be ok, or it may show all 0's
+
+- Take a zero, and check with mscstat. Usually ok. (if not follow [0] above for full restart of Mosaic3. 
+- restart mosbot.
+- restart tonight.sh.