Hello Spinlanders,
Help!
We have a Bruker AC-200 NMR system with an Aspect 3000 computer. I was
running an overnight 29Si acquistion in unlocked, undecoupled mode. When I
arrived this morning, the SCM alarm was sounding. Pressing the STDBY key
stopped the alarm. I did not notice if there was an error code on the LED
display. The 29Si overnight data was garbage. I thought that this might be
due the the experimental conditions.
Later this morning, I setup to run a proton decoupled 13C experiment on a 100
mg sample in 0.6 ml DMSO-d6. While the experiment was running, I checked the
data. Garbage.
I can see the decoupler signal on my oscilloscope. I can not see the
transmitter signal (SI=256W, PW=100us, rapid pulsing). The output of the
decoupler and transmitter goes through a 20 dB attenuator before entering the
oscilloscope.
Any ideas will be very much appreciated. Will be away until 14 September.
Best regards,
Lawrence
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09/02/99 12:47:22
Lawrence Byrnes,
NMR Laboratory Manager,
Numare Spectralab Incorporated
Research Director,
The Schoenenberg Institute of Molecular Spectroscopy
10 Summit Avenue, Building #6, P.O. Box 96,
Berkeley Heights, NJ, 07922-0096,
telephone 908-665-0066
facsimile 908-464-4192
email numare@eclipse.net
www http://www.eclipse.net/~numare/
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