Hi Darcy
when you read the parameter file topshim1d2h with "rpar topshim1d2h all" you
should see the routing go from
F1 (2H) to SGU1 to the 2H 5W to the 2H preamp and finally to the 2H coil in
the probe.
in "edprobe' and Rf connections it should show the 2H coil connected to the
2H preamp.
Regards
Clemens
On 9/1/2023 5:01 PM, Darcy Burns wrote:
Well folks,
I’ve seemingly bricked out 2h gradient performance when attempting to
upgrade TS 2.1 to TS 3.6.5 (CentOS / AV III nano). In this case we are receiving
a topshim raw check - no signal at all
In a nutshell:
1. we are able to acquire a 1D 2H (zg2h)
2. we are able to topshim 1h
3. We are able to make a new shimmap
4. 1D 1H and 1D 13C both are OK
5. I can manually shim to lineshape spec
In this case, we installed and ran nmrrestore to bringing out tar file. Then
cf / ii / ii restart to clear any issues. Then checked prosol table and edited
with previous values accordingly.
At first we were not able to get a good shim response (shimming iterated many
times and set to poor values, complained of poor signal:noise, which in
retrospect may have been related a conversion from dB to dBm in prosol).
Still, we did not get a raw check no signal at all error.
We then though (perhaps unwisely) that there was an issue with the shimmap
and performed a ‘topshim initial’.
à at this point we were no longer able to get a 2H response in topshim.
1D 2H is OK, so is 1h gradient shimming.
à seems like the routing is messed up
Routing is as follows:
1H à SGU2 à 60W amp
2H à SGU1 à 100W amp
5W amp is available, but unused.
I have no idea what to do; we reverted to the older computer running TS 2.1,
ran an nmrrestore and went through requisite cf’s; all to no avail.
Any advice out there?
cheerios,
Darcy
_________________________________
Darcy C. Burns, Ph.D.
Manager, CSICOMP NMR Facility
NEW BOOK! Optimizing NMR Methods for Structure Elucidation (Burns and Reynolds)
University of Toronto
80 St. George Street
Toronto, ON
M5S 3H6
ph: (416)-978-0448
fax: (416)-978-8775
https://sites.chem.utoronto.ca/csicomp/
--
==========================
==========================
====================
Clemens Anklin Ph.D. Vice President
Bruker BioSpin NMR Applications & Training
15 Fortune Drive NEW Phone: 978-313-5NMR(5667)
Billerica MA 01821 twitter: _at_canklin
web: http://www.bruker.com
e-mail: clemens.anklin_at_bruker.com
==========================
==========================
====================
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#530): https://urldefense.com/v3/__https://ammrl.groups.=
io/g/main/message/530__;!!PvDODwlR4mBZyAb0!XL76kjF-DfJIcF1OzjTBXunWTwllY3rW=
eOczYIA3BlpJVqWSIxFbUZ3P1zz0kMZLNu1Q6hzkc1cmw8E_dtw7UDbXFRjB$
Mute This Topic: https://urldefense.com/v3/__https://groups.io/mt/101107231=
/7559972__;!!PvDODwlR4mBZyAb0!XL76kjF-DfJIcF1OzjTBXunWTwllY3rWeOczYIA3BlpJV=
qWSIxFbUZ3P1zz0kMZLNu1Q6hzkc1cmw8E_dtw7UBco1lGt$
Group Owner: main+owner_at_ammrl.groups.io
-=-=-=-=-=-=-=-=-=-=-=-
Received on Sat Sep 02 2023 - 11:12:28 MST