LVshim has high Z harmonics, images show a signal void (hole).

LVshim has High Z Harmonics Images show a Signal Void hole See attached LVShim results notice Z harmonics and representative image of hole in phase images. @HDR 0 49 SITENAME = Columbia Presbyterian Eastside GRADMODE = C1 = No comment C2 = No comment @END @HDR 5 49 magnetSerNum = "D925" magnetType = "GE S-III" fieldStrength ="1.5T" room shielding (Yes/No) = "No" Magnishield (Yes/No) = "Yes" Shieldcooler type (0,1,2,3,4,5,6) = "lvshim.cfg" resistive shim power supply (0,1,2,3,4,5,6) = "0" external passive shim (Yes/No) = "No" passive shim drum (Yes,No) = "No" RFampType (ErbtecTube, ErbtecSolidState) = "10" spectroAmp (None, ENI) = "None" lineCondType (0,1,2) = "2" lineFreq (50,60) = "60" SRMode (120,77,50,20,17) = "120" ThisLineNotUsed = "" ThisLineNotUsed = "" ThisLineNotUsed = "" ThisLineNotUsed = "" @END @GRP 1 40 0 LARGE VOLUME SHIM CHECK GE S-III plane=6 bandwidth=200 fov=60 diameter=45, xmtfreq=63837068 Inhomogeneity(std)=110.72 hz, ( 1.734 ppm) spec=80 hz -----------Coil & Coefficients & Spec ------------------------- Z1: 20.13 [ 10] X: -3.40 [ 10] Z2X: 5.63 [ 50] Z2: -88.06 [ 60] Y: -22.08 [ 10] Z2Y: 32.04 [ 50] Z3: -304.70 [100] ZX: -14.04 [ 50] ZX2_ZY2: -217.38 [ 50] Z4: -58.99 [100] ZY: -299.80 [ 50] ZXY: 26.99 [ 50] Z5: 159.48 [100] X2_Y2: -52.47 [100] X3: -9.64 [100] Z6: 219.07 [200] XY: 1.66 [100] Y3: -13.51 [100] --------------------------------------------------------------- LV shim failed. @END @GRP 2 40 0 Coil Existing Delta New XGRAD -1.000 ---- -1.000 YGRAD -11.000 -2.000 -13.000 ZGRAD 18.000 2.000 20.000