We have a Avance DRX500 with SGI/Indy running XWIN-NMR1.3. The problem we
have is during long 2D/3D experiment the CCU stops communicating with the
Indy. When this happens, pusles are still being fired but no data is being
written on disk, the red ADCON LED on the RCU board is no longer blinking.
The "acqu" window is not being updated with fids and number of scans. This
can happen a few hours or even a few days after the start of the
experiment. We thought the CCU might be overheating and stops working but
after replacing it with another one the problem remains. The CCU boards we
had trouble with were CCU/ECL21 or CCU/ECL23. Now we have a newer one
(CCU/8, ECL42) for a couple of days and we have not run any long experiment
yet to know if the same problem exists.
Could it be software problem? Could it be RCU problem? Has this happened
to any of you?
Wei Wycoff
123 Chemistry Building
Department of Chemistry
U. of Missouri-Columbia
Columbia, MO 65211
USA
voice: (573) 882-3291
fax: (573) 882-2754
email: nmrguo@showme.missouri.edu