Angle Beam Calibration; Figure 3-18 Reference Gain Setting - Olympus EPOCH 650 User Manual

3.11.2

Angle Beam Calibration

Angle beam calibrations typically require four steps.
To perform an angle beam calibration
1. Locate the Beam Index Point (see "Locating the Beam Index Point" on page 165).
2. Verify the refracted angle of wedge (see "Verifying the Refracted Angle" on
page 167).
3. Complete the distance calibration using "Measurement calibration" on page 62
(Calibration mode set to SoundPath or Depth depending on the reflector type).
4. Set the sensitivity using "Calibrating for Sensitivity" on page 173 (See Figure 3-18
on page 67).
— Capture the sensitivity hole or notch in gate 1, bringing the indication to 80 %
screen height using 2
— Set the reference gain by pressing 2
F, (AUTO XX%).
ND
ND

Figure 3-18 Reference gain setting

DMTA-10055-01EN, Rev. A, February 2015
F, (REF dB).
Software Overview 67