
New TopShim run:

version = topshim 4.4.0
date = 2026-09-30
time = 14:32:49.660
command = topshim 1d optsolvent coil=1H optsolvent tuneaoff hrmas

HRMAS SHIMMING

Parameters:

probe = Z180004_0001
angle PHI = 270.5 degree
solvent = H2O+D2O
shim nucleus = 1H
nucleus optimised for = 1H
o1p (from lock) = 4.70 ppm

Results:

Iteration 1: FWHM Before= 0.5 Hz, Target= 0.2 Hz, After= 0.3 Hz
Iteration 2: FWHM Before= 0.3 Hz, Target= 0.9 Hz, After= 0.3 Hz
Iteration 3: FWHM Before= 0.3 Hz, Target= 0.2 Hz, After= 2.4 Hz
Iteration 4: FWHM Before= 2.4 Hz, Target= 0.3 Hz, After= 0.2 Hz
Iteration 5: FWHM Before= 0.2 Hz, Target= 0.3 Hz, After= 0.6 Hz
Rejecting all results and reverting to the initial shim state.

Lineshape quality factor (1D spectrum, MAS) = 0.7


Unusually slow convergence behaviour detected during shimming.
This may be indicative of an incorrect mounting angle being used!
1. Please perform 'topshim calreset'
2. Restart topshim
3. Enter the correct value for the mounting angle


MAS shims:
Z'	-16243
Z2'	+94317
Z3'	-24479
Z4'	+0


duration = 1 min 54 sec
completed successfully
finished Wed Sep 30 14:34:43 2026


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