TM 1-1520-265-23
5.4.3.5
NDI Equipment Settings.
a.
Make the following initial settings on the Eddy Current Inspection Unit, NORTEC-19e11
Frequency F1
- 200 KHz
F2
- off
HdB
- 57.0
VdB
- 69.0
Rot
- 56°
Probe drive -
mid
LPF
- 100
HPF
- 0
H 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 vertical signal when
probe is passed over 0,040-inch notch in test block. (See the standard instrument display shown in
Figure 1-7.)
5.4.3.6
Inspection Procedure. Refer to Eddy Current Method, paragraph 1.4.11 and Figure 5-4.
Figure 5-4. Air Inlet Assembly and Bleed-Air Exhaust Slots
5-7
