
New TopShim run:

version = topshim 2.4.0
date = 2025-11-17
time = 18:21:45.112
command = topshim  1d tuneaxyz

FINE SHIMMING

Parameters:

probe = Z108618_0305
solvent = CDCl3
shim nucleus = 2H
nucleus optimised for = 1H
o1p (from lock) = 7.24 ppm

Results:


1D Shimming:
Low S/N encountered. The acquisition parameters will be changed to improve this issue.
echo time must be reduced
echo time must be reduced

NOTE: very poor map quality encountered. You may need to use the CONVCOMP option.

Iteration  1: FWHM Before= 1.1 Hz, Target= 0.3 Hz, After= 1.5 Hz
Iteration  2: FWHM Before= 1.5 Hz, Target= 0.3 Hz, After= 1.5 Hz
Iteration  3: FWHM Before= 1.5 Hz, Target= 2.9 Hz, After= 2.6 Hz
Iteration  4: FWHM Before= 2.7 Hz, Target= 0.3 Hz, After= 0.5 Hz
Iteration  5: FWHM Before= 0.5 Hz, Target= 0.8 Hz, After= 1.3 Hz
Iteration  6: FWHM Before= 1.3 Hz, Target= 1.7 Hz, After= 0.8 Hz
Iteration  7: FWHM Before= 0.8 Hz, Target= 0.3 Hz, After= 2.0 Hz
Iteration  8: FWHM Before= 1.9 Hz, Target= 3.1 Hz, After= 3.2 Hz
Using the best result as the final shim state.

Lineshape quality factor (1D spectrum, spinning) = 1.29


Performing tune after shimming
tune lock level increase = 2.1

shim changes: 
Z	+31
Z2	-2435
Z3	-25
Z4	-28209
Z5	+1110

duration = 4 min 28 sec
completed successfully
finished Mon Nov 17 18:26:11 2025


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