Figure 11-2 The Dac/Tcg Setup Page - Olympus EPOCH 650 User Manual

DMTA-10055-01EN, Rev. A, February 2015
To activate the DAC/TCG feature
1. Choose DAC/TCG (group 4/5).
2. Press Setup (P7 key) to display the DAC/TCG setup page (see Figure 11-2 on
page 228).
3. Press one of the parameter keys (P2 –P6) to select a DAC/TCG Mode.
You can also apply the Ref Correct (reference correction) option to the digital
analysis of the live A-scan and DAC/TCG mode. The reference correction feature,
when activated, allows full gain manipulation of either the live echo peaks or the
DAC curve while providing the % amplitude or dB comparison of the actual
peak-to-curve ratio. In this way, you can use scanning gain while maintaining an
accurate measurement reading of the ratio of the gated peak to the DAC curve for
sizing purposes. The gated echo amplitude is corrected back to the reference gain
level for amplitude evaluation compared to the DAC curve.
4. If applicable, set Ref Correct to On.
5. Select an optional Curve Type (Standard, ASME-3, JIS, and CUSTOM modes),
and No of Curves. (Select to allow or deactivate a 20–80% DAC view.)
6. Press to return to the live A-scan screen and begin DAC/TCG setup.
228 Chapter 11

Figure 11-2 The DAC/TCG setup page