AMMRL: More fun with ARX

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Hi,
It seems that our problem with tuning of the ARX-400 was related to overhea=
ting of the Aspect 3001. We discovered that in this unit BOTH fans were dea=
d. We had replaced the fans, the process controller, the MCI board, and som=
e cables. After that everything appeared normal (for a moment). We could lo=
ck/shim, tune and run acquisition (both high and low fqcy channel). Then we=
 decided to check if our old boards were still good, starting with the proc=
ess controller. After swapping these boards we lost lock signal. We switche=
d back to the new one but the signal was still gone. It is quite surprising=
 - so far lock was one of the few functions that were always working. Bruke=
r Service Center suggests a problem with the acquisition interface board (a=
lso inside the Aspect 3001 box - possibly damaged by overheating and sudden=
ly dying). Hopefully replacing of this part will fix the lock but I am not =
really convinced. Please send me your comments/ideas/suggestions.
Thank you,
Piotr


Piotr Dobrowolski Ph.D.
NMR/EPR Manager
Department of Chemistry and Biochemistry
Utah State University
0300 Old Main Hill, Logan UT 84322-0300
telephone: 435 797-1673
fax: 435 797-3390
http://www.chem.usu.edu/pages/facilities/nmrfacility.html


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Hi,

It seems that our problem with tuning of the ARX-400 was related to
overheating of the Aspect 3001. We discovered that in this unit BOTH fans w=
ere
dead. We had replaced the fans, the process controller, the MCI board, and =
some
cables. After that everything appeared normal (for a moment). We could lock=
/shim,
tune and run acquisition (both high and low fqcy channel). Then we decided =
to
check if our old boards were still good, starting with the process controll=
er.
After swapping these boards we lost lock signal. We switched back to the ne=
w
one but the signal was still gone. It is quite surprising – so far lo=
ck
was one of the few functions that were always working. Bruker Service
 Center suggests a p=
roblem
with the acquisition interface board (also inside the Aspect 3001 box ̵=
1;
possibly damaged by overheating and suddenly dying). Hopefully replacing of
this part will fix the lock but I am not really convinced. Please send me y=
our
comments/ideas/suggestions.

Thank you,

Piotr

 

 

Piotr Dobrowolski Ph.D.

NMR/EPR Manager

Department of Chemistry and Biochemistry

Utah Stat=
e
 University

0300 Old Main Hill, Lo=
gan
 UT 84322-03=
00

telephone: 435 797-1673

fax: 435 797-3390

http://www.chem.usu.edu/pages/facilities/nmrfacility.html


 







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