NMR cross talk

From: D. Chuck Dunbar (ddunbar@olemiss.edu)
Date: Thu Feb 24 2005 - 12:29:34 PST


Dear Bums,
We have two 400 MHz instruments which are interfering with each other.
Our primary problem is when the AV400 is decoupling 13C during an HMQC
we get strong noise spikes in a 13C running on the other instrument. .
The current frequencies are 400.13 and 400.17 MHz. We are thinking of
trying to change the fields further apart but we are not sure if this
will fix the problem. I would like to get others opinion on this.
      A second related question is how much can you change the field
using the Z0 coil and how would you do this in the software? Our other
option is to move one of the instruments but this would not be easy.
Any insight into this matter will be appreciated.

Thanks, Chuck

-- 
D. Chuck Dunbar, Ph.D.
Associate Research Scientist
Thad Cochran Research Center
National Center for Natural Products Research
University, MS 38677

Office (662)915-1025 Lab (662)915-1021 Fax (662)915-7989



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