DMTA-10055-01EN, Rev. A, February 2015
Software Features and Options
261
The crack size indication (di) appears at the top right corner of the live A-Scan
display.
7. Find the reflection from the calibration notch and press 2
ND
F, (AUTO XX%) to
bring this indication to 80 % FSH
8. Adjust gate 1 so that it surrounds the indication.
9. Move the transducer forward and backward over the notch to draw a peak
envelope of the echo dynamics of the notch.
10. Press P1 to collect the A
max
, T
1
, and T
2
data from the envelope.
11. Press P5 to move from calibration mode to Inspect mode.
To inspect a separate crack, or to collect new data for the same crack, press P6 to clear
the current data and follow the steps above to inspect again.
11.5.3 Manual Mode
You can also use the Manual mode approach with the API 5UE option. This mode
allows you to manually select the A
max
, T
1
, and T
2
points from a live A-Scan to obtain
a crack depth indication. With the Peak Memory function off, you can manually
collect each calibration data point to calibrate the instrument for inspection.
11.5.3.1 Manual Mode Calibration
To calibrate in Manual mode
1. Activate the API 5UE software and input a reference notch depth.
2. Find the signal from the reference notch.
3. Adjust the screen range to adequately display the full range of motion of the
reference notch signal.
4. Adjust gate 1 to encompass the full range of motion of the reference notch signal,
and then bring the gate to below 40 % FSH.
5. Find the reflection from the calibration notch and AUTO 80% to bring this
indication to 80 % FSH.
6. Press RefAMax (P1) to store the A
max
point, and then press RefAMax again to
confirm (see Figure 11-25 on page 262).
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