Hi Justin
we observed the same thing. a little differently though. We could not align HSQC spectra collected on aVNMRS system ( running Vnmrj 3) with those collected on an Inova (running 2.1D). We had to arbitrarily increase the spectal width in the 1H dimension. we reported this to Varian several months ago ( who confirmed this ) and they have not yet fixed the problem as far as i am aware. We assume this a software bug. Would be interested if anyone else has observed this.
David
David N. M. Jones, Assoc. Professor
Dept. of Pharmacology, CU School of Medicine
tel 303-724-3600; cell 303-916-7246
Sent from my iPad
On Feb 10, 2012, at 5:08 AM, "Justin Lecher" <[log in to unmask]> wrote:
> Hi,
>
> my question is off-topic to ccpn, but I hope I can get an answer from
> the audience.
>
> The problem is the following, in some of our NOESY spectra
> (3D-NOESY-CHSQC, 2/3D-filterNOESY-Cedited) the proton dimensions don't
> have the correct scaling towards each other. That means the diagonal of
> the spectra doesn't fit with the diagonal of the spectral dimensions.
> It seems that either the indirect proton dimension is stretched or the
> direct proton dimension is compressed. So far I cannot find any problem
> in the parameters of the procpar file or the fid itself. This is on a
> varian VNMRSYS system.
>
> Does anybody observed something similar and has an explanation for it?
>
> Thanks justin
>
>
>
> --
> Justin Lecher
> Institute of Complex Systems
> ICS-6 Structural Biochemistry
> Research Centre Juelich
> 52425 Juelich, Germany
> phone: +49 2461 61 2117
>
>
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