Question from NMRWiki Q&A forum log: Failed to find Z0 - low s/n

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02-17-2015, 12:57 PM

nmrlearner

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log: Failed to find Z0 - low s/n

log: Failed to find Z0 - low s/n

Hi, everybody! I met a problem on Varian 400 MR: DMSO samples don't lock by "find Z0" button, but I can find lock signal manually in a quite unusual range of Z0 values (30000). After adjusting shims i still have pour s/n. Probe is tuned and matched. It happened after VT experiments, I ran. Samples in CDCl3 looks perfect! What am I doing wrong and why that's happened? Thanks.

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