Figure 9-21 Entering The Zero Cal Thickness Value - Olympus EPOCH 650 User Manual

5. Once a steady reading is achieved, choose Auto Cal > Cal-Zero.
The screen freezes and the Cal-Zero box appears.

Figure 9-21 Entering the Zero Cal thickness value

6. Adjust the value to match the known thickness of the gated indication (4.000 in. in
this example), and then choose Continue to continue to the second calibration
step.
If for any reason you need to exit without acquiring calibration data, press
Cancel.
7. Use the G1Start button (P5 key) to position gate 1 so that the second echo
reflection from the arc of the block is within the gated region. This reflection
should be close to 225 mm (9 in.) (see Figure 9-22 on page 172).
DMTA-10055-01EN, Rev. A, February 2015
Calibration 171