TM 1-1520-265-232-342.16.3.5 NDI Equipment Settings.a. Make the following initial settings on the Eddy Current Inspection Unit, NORTEC-19eII.Frequency F1 - 1000 KHz F2 - offHdB - 57.0VdB - 69.0Rot - 30_Probe drive - midLPF - 100HPF - 0H Pos - 80%V Pos - 20%b. Refer to Eddy Current Method, paragraph 1.4.11. Set up on test block as follows:(1) .Null probe on test block.(2) .Adjust phase as required to obtain horizontal lift-off.(3) .Move probe over all three notches in test block. Adjust gain to obtain a three block verticalsignal when probe is passed over 0.040-inch notch in test block. (See the standardinstrument display shown in Figure 1-7.)1.1.1.2 Inspection Procedure. Refer to Eddy Current Method, paragraph 1.4.11 and Figure 2-16.Figure 2-16. Lower Link
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