New TopShim run: version = topshim 2.1.0 date = 2021-12-23 time = 23:30:07.189 command = topshim tunea FINE SHIMMING Parameters: probe = Z168276_0016 solvent = H2O+DMSO shim nucleus = 1H nucleus optimised for = 1H o1p (set) = 4.70 ppm Results: 1D Shimming: Iteration 1: FWHM Before= 0.4 Hz, Target= 0.3 Hz, After= 0.4 Hz Iteration 2: FWHM Before= 0.4 Hz, Target= 0.3 Hz, After= 0.6 Hz Iteration 3: FWHM Before= 0.6 Hz, Target= 0.3 Hz, After= 0.8 Hz Iteration 4: FWHM Before= 0.8 Hz, Target= 0.3 Hz, After= 0.3 Hz Iteration 5: FWHM Before= 0.3 Hz, Target= 0.3 Hz, After= 1.0 Hz Iteration 6: FWHM Before= 1.0 Hz, Target= 0.3 Hz, After= 0.3 Hz Slow convergence detected. Shimming was aborted. Using the best result as the final shim state. Lineshape quality factor (1D spectrum, non-spinning) = 0.389 Performing tune after shimming NOTE: The lock signal appears to be unstable. This affects the performance of the tune algorithm! tune lock level increase = 1.1 shim changes: Z +98 Z2 +6 Z3 +17 Z4 +151 Z5 -91 Z6 -1361 Z7 -596 Z8 +8504 X +9 XZ +10 Y +59 YZ -108 duration = 2 min 27 sec completed successfully finished Thu Dec 23 23:32:32 2021 ========================================================================