DMTA-10084-01EN, Rev. 2, November 2018
Chapter 8
94
that are below and above the expected thickness of the material being inspected. For
this example, the 0.200 in. and 0.400 in. steps of an Olympus standard 5-step steel
calibration test block are used.
If the EPOCH 6LT is set to work in metric units, the calibration process is exactly the
same, except the entries are in millimeters rather than inches.
To calibrate using a straight beam transducer
1. Couple the transducer to the 0.200 in. step of the calibration test block.
2. Adjust the Pulser and Receiver settings to create a clean A-scan.
For more information on pulser and receiver adjustments, see “Pulser/Receiver
Adjustments” on page 59.
3. On the setup menu, select the Calibrate icon ( ) to open the calibration dialog
box (see Figure 8-3 on page 95).
4. Set the Type to Depth-2pts.
5. Adjust Cal-Zero to 0.200 (to match the 0.200 in. step of the calibration test block).
6. Adjust Cal-Vel to 0.400 (to match the 0.400 in. step of the calibration test block).
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