
New TopShim run:

version = topshim 4.4.0
date = 2026-09-24
time = 11:20:29.859
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= 0.7 Hz, Target= 0.2 Hz, After=165.5 Hz
Iteration 2: FWHM Before=165.5 Hz, Target=22.2 Hz, After= 1.1 Hz
Iteration 3: FWHM Before= 1.1 Hz, Target= 0.2 Hz, After= 2.4 Hz
Iteration 4: FWHM Before= 2.4 Hz, Target= 0.3 Hz, After=55.0 Hz
Iteration 5: FWHM Before=55.0 Hz, Target= 0.4 Hz, After= 0.7 Hz
Using the best result as the final shim state.

Lineshape quality factor (1D spectrum, MAS) = 5.92


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'	-16075
Z2'	+100297
Z3'	+16550
Z4'	+0


duration = 1 min 46 sec
completed successfully
finished Thu Sep 24 11:22:15 2026


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