AMMRL: 120Hz Spurious Pickups

From: Jerry Hu <jghu_at_mrl.ucsb.edu>
Date: Fri, 8 May 2015 19:19:37 +0000

Dear AMMRLers,

On our Bruker DMX 500MHz SB solution NMR instrument, each 1H signal is accompanied by spurious pickups which are 120Hz apart from each other and from the signal and have variable phases, as shown in the spectrum below for a CDCl3 solvent. Inputs as to the reasons and fixes for the pickups are very well appreciated.
[cid:image002.jpg_at_01D08989.394D8190]

Cheers,
Jerry
------------------------------------------------------------------------------------------------
Jerry Hu, Ph.D.
Technical Director Email: jghu_at_mrl.ucsb.edu<mailto:jghu_at_mrl.ucsb.edu>
Project Scientist Tel: (805)893-7914 (office)
Materials Research Lab, UCSB (805)893-7940 (lab)
Santa Barbara, CA 93106 Fax: (805)893-7914
http://www.mrl.ucsb.edu/spectroscopy-facility


image002.jpg
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Received on Fri May 08 2015 - 09:19:47 MST

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