Tagged questions

How to check acquisition status of the NMR instrument remotely?

2 0 4k
answers votes views
Hello, does anyone know whether the instrument is busy or not by logging in remotely? How do you do that on the platfor...
renee 56 Dec 16 '10 at 03:13

Please suggest experiments that push the power limits of NMR probes

5 1 9k
answers votes views
I'm trying to come up with reasonable tests of probe performance for all channels by simulating conditions at which arci...
SankarampadiAravamudhan 91 Oct 22 '10 at 01:56

What may cause lock level depend on pfgon setting in vnmr?

2 1 5k
answers votes views
Hello, I've been working through the probe performance tests and noticed that when I change pfgon='yyy' to pfgon='nyn' l...
Jerry Hirschinger 199 Sep 28 '10 at 12:12

How to determine physical orientation of X and Y shims?

2 0 4k
answers votes views
Hello, I need to help solids lab at our UCI site - they have a custom probe and need to orient it properly in order to e...
Jerry Hirschinger 199 Sep 13 '10 at 08:46

How does removal and re-installation of probe affect shims?

2 0 8k
answers votes views
If you remove and later (not too much later) reinstall the probe and you are confident that probe position inside the ma...
Hamish Grant 21 Aug 24 '10 at 17:56

How to set up 15N direct detection on UnityInova?

3 0 8k
answers votes views
Has anyone recorded directly detected 15N spectra on UnityInova? We have a triple resonance HCN probe. The sample I've u...
Andrew Fowler 96 Jul 30 '10 at 06:01

How to remove baseline DC offset in Bruker EMX EPR spectra?

1 0 5k
answers votes views
Hello, I've noticed recently that our EPR spectrometer (Bruker EMX500) has a negative offset on the baseline and it bec...
Alex Blumenfeld 11 May 12 '10 at 11:55

Using probe that started losing B1 strength or has longer 90 degree pulse

1 0 5k
answers votes views
I've found that one of our probes lost ~1.5-2 dB of power on 13C, but nutation curve looks OK. There are no random spike...
Joseph DiVerdi 146 Apr 19 '10 at 18:07

How to set up EPR measurement at elevated temperatures?

0 0 3k
answers votes views
What setup do you use to measure EPR at temperatures above room temperature? We have a Bruker EMX500 instrument and we...
Evgeny Fadeev 5771 Apr 14 '10 at 16:28

What happens if NMR probe is not perfectly tuned/matched?

2 1 7k
answers votes views
What may happen if probe tuning/matching is not perfect besides loss in the sensitivity, any more subtle details? Whoul...
carl carter 21 Feb 22 '10 at 16:10

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