910-269-EN, Rev. B, June 2011
164 Chapter 9
4. Use the [GATE] key to position gate 1 so that the reflection from the first side-
drilled hole is exceeding the gate threshold. This reflection should be close to
0.5
in. (12.5 mm).
Figure 9-21 Example of a gated calibration signal
5. Press [GAIN], and then adjust the gain so that the echo amplitude is at
approximately 80
%.
A thickness measurement reading appears in large text above the A-scan.
6. Once a steady reading is achieved, choose 1/5 > Auto CAL > CAL Zero.
The screen freezes and the Enter Value for Zero Cal dialog box appears.
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