Hello,
Wim (the expert on these matters) says:
"It’s not because of TSS, it’s the IUPAC conversion factor from H to C, probably. So proton referenced to DSS, but then the Bruker conversion to carbon, not the IUPAC one.”
Wayne
> On 7 Oct 2015, at 09:48, Andrey Shernyukov <[log in to unmask]> wrote:
>
> Hello,
> When opening the Bruker spectra following window appears (Analysis2.4.2 and early):
> "Reset Referencing?
> Carbon Referencing out by 2.671
> Referencing was to TMS rather than DSS"
>
> However, the spectra have been calibrated correctly.
>
> The code that checks it ( ExperimentBasic.py | # check for misreferencing ) uses parameters "baseFrequency", which is equivalent to Bruker "basic transmitter frequency", rather than right Bruker processing parameters "Spectrometer Frequency".
>
> Why?
|