TM 1-1520-265-23Change 3 6-216.11.3.5 NDI Equipment Settings.a. Make the following initial settings on the Eddy Current Inspection Unit, NORTEC-19eII.Frequency F1 - 200 KHz (Aluminum) 1500 KHz (Titanium)Frequency F2 - offHdB - 57.0VdB - 69.0Rot - (56_ Aluminum and Titanium)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.)6.11.3.6 Inspection Procedure. Refer to Eddy Current Method, paragraph 1.4.11 and Figure 6-11.Figure 6-11. Nonferrous Flight Control System Push-Pull Rods
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